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S
Agilent 81130A 400/660MHz Pulse/Data Generator
Reference Guide
S1
Reference Guide
Agilent 81130A 400/660 MHz
Pulse/Data Generator
Part No. 81130-91021
Printed in Germany March 2000
Edition 1.0, E0300
Notice
Notice
Copyright
1998 Agilent Technologies 1998, 2000. All rights reserved.
No part of this manual may be reproduced in any form or by any means
(including electronic storage and retrieval or translation into a foreign
language) without prior agreement and written consent from Agilent
Technologies Inc. as governed by United States and international
copyright laws.
Notice
The material contained in this document is subject to change without
notice. Agilent Technologies makes no warranty of any kind with regard
to this material, including, but not limited to, the implied warranties of
merchantability and fitness for a particular purpose. Agilent
Technologies shall not be liable for errors contained herein or for
incidental or consequential damages in connection with the furnishing,
performance, or use of this material.
Warranty
This Agilent Technologies product has a warranty against defects in
material and workmanship for a period of three years from date of
shipment. During the warranty period, Agilent Technologies will, at its
option, either repair or replace products that prove to be defective. For
warranty service or repair, this product must be returned to a service
facility designated by Agilent Technologies. The Buyer shall pay Agilent
Technologies round-trip travel expenses. For products returned to
Agilent Technologies for warranty service, the Buyer shall prepay
shipping charges to Agilent Technologies and Agilent Technologies shall
pay shipping charges to return the product to the Buyer. However, the
Buyer shall pay all shipping charges, duties and taxes for products
returned to Agilent Technologies from another country.
4
Notice
Agilent Technologies warrants that its software and firmware designated
by Agilent Technologies for use with an instrument will execute its
programming instructions when properly installed on that instrument.
Agilent Technologies does not warrant that the operation of the
instrument software, or firmware, will be uninterrupted or error free.
Limitation of Warranty
The foregoing warranty shall not apply to defects resulting from
improper or inadequate maintenance by the Buyer, Buyer-supplied
software or interfacing, unauthorized modification or misuse, operation
outside of the environmental specifications for the product, or improper
site preparation or maintenance. No other warranty is expressed or
implied. Agilent Technologies specifically disclaims the implied
warranties of merchantability and fitness for a particular purpose.
Exclusive Remedies
The remedies supplied are the Buyer's sole and exclusive remedies.
Agilent Technologies shall not be liable for any direct, indirect, special,
incidental, or consequential damages, whether based on contract, tort or
any other legal theory.
Certification
Agilent Technologies certifies that this product met its published
specifications at the time of shipment. Agilent Technologies further
certifies that its calibration measurements are traceable to the United
States Institute of Standards and Technology, to the extent allowed by
the Institute's calibrating facility, and to the calibration facilities of other
International Standards Organization members.
Services and Support
Any adjustment, maintenance, or repair of this product must be
performed by qualified personnel. Contact your customer engineer
through your local Agilent Technologies Service Center. You can find a
list of local service representatives on the Web at:
http://www.agilent.com/Service/English/index.html
5
Safety Summary
Safety Summary
The following general safety precautions must be observed during all
phases of operation of this instrument. Failure to comply with these
precautions or with specific warnings elsewhere in this manual violates
safety standards of design, manufacture, and intended use of the
instrument. Agilent Technologies Inc. assumes no liability for the
customer's failure to comply with these requirements.
General
This product is a Safety Class 1 instrument (provided with a protective
earth terminal). The protective features of this product may be impaired
if it is used in a manner not specified in the operation instructions.
All Light Emitting Diodes (LEDs) used in this product are Class 1 LEDs
as per IEC 60825-1.
Environmental Conditions
This instrument is intended for indoor use in an installation category II,
relative humidity of 95% and at altitudes of up to 2000 meters. Refer to
the specifications tables for the ac mains voltage requirements and
ambient operating temperature range.
Before Applying Power
Verify that the product is set to match the available line voltage, the
correct fuse is installed, and all safety precautions are taken. Note the
instrument's external markings described under “Safety Symbols” on
page 8.
6
Safety Summary
Ground the Instrument
To minimize shock hazard, the instrument chassis and cover must be
connected to an electrical protective earth ground. The instrument must
be connected to the ac power mains through a grounded power cable,
with the ground wire firmly connected to an electrical ground (safety
ground) at the power outlet. Any interruption of the protective
(grounding) conductor or disconnection of the protective earth terminal
will cause a potential shock hazard that could result in personal injury.
Fuses
Only fuses with the required rated current, voltage, and specified type
(normal blow, time delay, etc.) should be used. Do not use repaired fuses
or short-circuited fuse holders. To do so could cause a shock or fire
hazard.
Do Not Operate in an Explosive Atmosphere
Do not operate the instrument in the presence of flammable gases or
fumes.
Do Not Remove the Instrument Cover
Operating personnel must not remove instrument covers. Component
replacement and internal adjustments must be made only by qualified
service personnel.
Instruments that appear damaged or defective should be made
inoperative and secured against unintended operation until they can be
repaired by qualified service personnel.
7
Safety Summary
Safety Symbols
Caution (refer to accompanying documents)
Protective earth (ground) terminal
In the manuals:
WARNING
CAUTION
The WARNING sign denotes a hazard. It calls attention to a
procedure, practice, or the like, which, if not correctly performed
or adhered to, could result in personal injury. Do not proceed
beyond a WARNING sign until the indicated conditions are fully
understood and met.
The CAUTION sign denotes a hazard. It calls attention to an operating
procedure, or the like, which, if not correctly performed or adhered to,
could result in damage to or destruction of part or all of the product. Do
not proceed beyond a CAUTION sign until the indicated conditions are
fully understood and met.
8
About this Book
About this Book
This guide provides reference information primarily for programming the
Agilent 81130A via remote control.
Chapter 1 “General Programming Aspects” on page 13 gives general
hints for programming instruments like the Agilent 81130A using SCPI
commands.
Chapter 2 “Programming Reference” on page 25 provides detailed
information on the SCPI commands supported by the instrument.
Chapter 3 “Specifications” on page 95 lists the instrument’s technical
specifications and provides exact definitions for the instrument’s
parameters.
For an introduction and information on the Agilent 81130A’s user
interface, please refer to the Quick Start Guide, p/n 81130-91020.
9
About this Book
Conventions Used in this Book
This book uses certain conventions to indicate elements of the
Agilent 81130A’s user interface. The following table shows some
examples:
Softkeys
Press the MODE/TRG softkey to access the Mode/
Trigger screen.
Hardkeys
Press the MORE key to switch to the alternative
softkey layout.
Alternate Keys
Press SHIFT + 0 (ON/OFF1) to switch on output1.
The alternate key label—which is selected by
pressing the SHIFT key—is given in parentheses.
Screen Quotes
Entry Focus
Move the entry focus down to PULSE-PERIOD and
turn the knob to select INTERNAL PLL.
The highlight field, that can be moved with the
cursor keys, to change modes, parameters, or
parameter formats.
:VOLTage:HIGH 3V Full command for programming a 3 V high level.
The upper case letters represent the short form
of the command, which results in faster pro-
gramming times.
*RST
Common IEEE 488 command, to reset instru-
ment to default status.
10
Notice ......................................................................................... 4
Safety Summary ......................................................................... 6
About this Book ......................................................................... 9
The GP-IB Interface Bus ......................................................... 14
Agilent 81130A Remote Control ............................................ 15
Programming Recommendations ............................................ 16
Common Command Summary ................................................. 18
Status Model ............................................................................ 19
Chapter 2 Programming Reference
Agilent 81130A SCPI Command Summary ............................ 26
Default Values, Standard Settings ......................................... 34
Programming the Instrument Trigger Modes ........................ 38
SCPI Instrument Command List ............................................ 42
Chapter 3 Specifications
Declaration of Conformity ...................................................... 96
xi
General ................................................................................................... 97
Timing Specifications ........................................................................... 99
External Input, External Clock/PLL Reference Input .................... 103
Trigger Modes ...................................................................................... 105
Output Modes ...................................................................................... 106
Human Interface .................................................................................. 108
Memory ................................................................................................. 109
Remote Control ................................................................................... 109
Pulse Parameter Definitions ................................................ 111
xii
General Programming Aspects
The GP-IB Interface Bus
The GP-IB Interface Bus
The GP Interface Bus is the interface used for communication between a
controller and an external device, such as the Agilent 81130A. The GP-IB
conforms to IEEE standard 488-1987, ANSI standard MC 1.1, and IEC
recommendation 625-1.
If you are not familiar with the GP-IB, please refer to the following
books:
• The Institute of Electrical and Electronic Engineers: IEEE Standard
488.1-1987, IEEE Standard Digital Interface for Programmable
Instrumentation.
• The Institute of Electrical and Electronic Engineers: IEEE Standard
488.2-1987, IEEE Standard Codes, Formats, and Common
Commands for Use with IEEE Standard 488.1-1987.
14
General Programming Aspects
Agilent 81130A Remote Control
Agilent 81130A Remote Control
GP-IB Address
You can only set the GP-IB address from the front panel of the instrument
(refer to the Quick Start Guide).
The default GP-IB address is 10.
Modes of
Operation
The Agilent 81130A has two modes of operation:
• Local
The instrument is operated using the front panel keys.
• Remote
After receiving the first command or query via the GP-IB, the
instrument is put into remote state. The front panel is locked.
To return to local operating mode, press SHIFT (LOCAL).
15
General Programming Aspects
Programming Recommendations
Programming Recommendations
Here are some recommendations for programming the instrument:
• Start programming from the default setting. The common command
for setting the default setting is:
*RST
• Switch off the automatic update of the display to increase the
programming speed. The device command for switching off the
display is:
:DISPlay OFF
• The SCPI standard defines a long and a short form of the commands.
For fast programming speed it is recommended to use the short
forms. The short forms of the commands are represented by upper
case letters. For example the short form of the command to set 100 ns
delay is:
:PULS:DEL 100NS
• To improve programming speed it is also allowed to skip optional
subsystem command parts. Optional subsystem command parts are
depicted in square brackets, e.g.: set amplitude voltage of output 1:
[SOURce]:VOLTage[1][:LEVel][:IMMediate][:AMPLitude].
Sufficient to use: :VOLT 1.2V
• For the commands to set the timing and level parameters, except of
period/frequency, you can explicitly specify the output to be
programmed (for compatibility reasons). If there is no output
specified, the commands will set the default output 1.
So, for setting a high level of 3 Volts for output 1 the commands are:
:VOLT:HIGH 3V
:VOLT1:HIGH 3V
# sets high level of 3 V at out 1
# sets high level of 3 V at out 1
16
General Programming Aspects
Programming Recommendations
• It is recommended to test a new setting that will be programmed on
the instrument by setting it up manually.
Enable the outputs so that the instrument’s error check system is on
and possible parameter conflicts are immediately displayed.
When you have found the correct setting, then use this to create the
program. In the program it is recommended to send the command for
enabling outputs (for example, :OUTPut ON) as the last command.
• Selftest of the instrument can be invoked by the common command
*TST
• If it is important to know whether the last command is completed,
then send the common command
*OPC?
17
General Programming Aspects
Common Command Summary
Common Command Summary
This table summarizes the IEEE 488.2 common commands supported by
the Agilent 81130A:
Command
Parameter Description
*CLS
–
Clear the status structure
*ESE
<0–255>
Set the Standard Event Status register mask
Read the state of the Standard Event Status enable register
Read the state of the Standard Event Status event register
Read the Instrument's Identification string
Read the complete Instrument Setting
*ESE?
*ESR?
*IDN?
*LRN?
*OPC
–
–
–
–
–
Set the Operation Complete bit when all pending actions
are complete
*OPC?
*OPT?
*RCL
*RST
–
–
Read the status of the Operation Complete bit
Read the installed options
<0–4>
Recall a complete Instrument Setting from memory
Reset the instrument to standard settings
Save the complete Instrument Setting to memory
Set the Service Request Enable Mask
Read the Service Request Enable Mask
Read the Status Byte
–
*SAV
<1–4>
*SRE
*SRE?
*STB?
*TRG
*TST?
*WAI
<0–255>
–
–
–
–
–
Trigger
Execute instrument’s selftest
Wait until all pending actions are complete
18
General Programming Aspects
Status Model
Status Model
QUESTIONABLE STATUS
Voltage Warning
Current Warning
Timing Warning
0
1
2
3
4
5
6
7
8
9
Frequency Warning
Pattern Warning
Status
Byte
0
1
2
3
4
5
6
7
15
OPERation Status
(NOT USED)
0
1
2
3
4
5
6
7
8
9
MAV
SRQ
15
Standard Event Status
Operation Complete
0
1
2
3
4
5
6
7
Query Error
Device Dependent Error
Execution Error
Command Error
Power On
The instrument has a status reporting system conforming to IEEE 488.2
and SCPI. The above figure shows the status groups available in the
instrument.
Each status group is made up of component registers, as shown in the
following figure.
19
General Programming Aspects
Status Model
Condition Transition Event
Register
Enable
Register
Filters
Register
Summary Bit
OR
Hardware
and Firmware
condition
1
0
1
0
Latched
PTR NTR
Condition Register
A condition register contains the current status of the hardware and
firmware. It is continuously updated and is not latched or buffered. You
can only read condition registers. If there is no command to read the
condition register of a particular status group, then it is simply invisible
to you.
Transition Filters
Transition filters are used to detect changes of state in the condition
register and set the corresponding bit in the event register. You can set
transition filter bits to detect positive transitions (PTR), negative
transitions (NTR) or both. Transition filters are therefore read/write
registers. They are unaffected by *CLS.
Event Register
An event register latches transition events from the condition register as
specified by the transition filters or records status events. Querying
(reading) the event register clears it, as does the *CLS command. There is
no buffering, so while a bit is set, subsequent transition events are not
recorded. Event registers are read only.
20
General Programming Aspects
Status Model
Enable Register
The enable register defines which bits in an event register are included in
the logical OR into the summary bit. The enable register is logically
ANDed with the event register and the resulting bits ORed into the
summary bit. Enable registers are read/write, and are not affected by
*CLS or querying.
Although all status groups have all of these registers, not all status
groups actually use all of the registers. The following table summarizes
the registers used in the instrument status groups.
Registers in Group
Status Group
CONDition NTR
PTR
EVENt
ENABLe
√
√
√
√
√
QUEStionable
1
x
x
x
x
x
OPERation
2
3
Standard Event Status
Status Byte
x
x
x
x
x
x
√
√
4
5
√
√
1 Present, but not used. COND and EVEN always 0.
*ESR?
2 Use
3 Use
4 Use
5 Use
to query.
*ESE?
to query
*ESE
to set,
to query
to query
*STB?
*SRE
*SRE?
to set,
21
General Programming Aspects
Status Model
Status Byte
The status byte summarizes the information from all other status groups.
The summary bit for the status byte actually appears in bit 6 (RQS) of the
status byte. When RQS is set it generates an SRQ interrupt to the
controller indicating that at least one instrument on the bus requires
attention. You can read the status byte using a serial poll or *STB?
Bit
Description
0
1
2
3
4
5
6
7
Unused, always 0
Unused, always 0
Unused, always 0
QUESTionable Status Summary Bit
MAV—Message AVailable in output buffer
Standard Event Status summary bit
RQS; ReQuest Service
OPERation Status summary Bit, unused
Standard Event Status Group
Bit
Description
0
1
2
3
4
5
6
7
Operation Complete, set by *OPC
Unused, always 0
Query Error
Device Dependent Error
Execution Error
Command Error
Unused, always 0
Power On
22
General Programming Aspects
Status Model
OPERation Status Group
This Status Group is not used in the instrument.
Bit
Description
0
Unused, always 0
Unused, always 0
Unused, always 0
Unused, always 0
Unused, always 0
Unused, always 0
Unused, always 0
Unused, always 0
Unused, always 0
Unused, always 0
Unused, always 0
Unused, always 0
Unused, always 0
Unused, always 0
Unused, always 0
Always 0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
23
General Programming Aspects
Status Model
QUEStionable Status Group
Bit
QUEStionable
0
Voltage warning
Current warning
Time warning
1
2
3
Unused, always 0
Unused, always 0
Frequency warning
Unused, always 0
Unused, always 0
Unused, always 0
Pattern warning
Unused, always 0
Unused, always 0
Unused, always
Unused, always 0
Unused, always 0
Always 0
4
5
6
7
8
9
10
11
12
13
14
15
The QUEStionable Status group is used to report warning conditions
amongst the voltage, current, pulse timing, frequency and pattern
parameters. Warnings occur when a parameter, although not outside its
maximum limits, could be causing an invalid signal at the output because
of the actual settings and uncertainties of related parameters.
24
2
This chapter provides reference information on the following topics:
• “Agilent 81130A SCPI Command Summary” on page 26
• “Default Values, Standard Settings” on page 34
• “Programming the Instrument Trigger Modes” on page 38
• “SCPI Instrument Command List” on page 42
For general programming information, please refer to Chapter 1
“General Programming Aspects” on page 13.
25
Programming Reference
Agilent 81130A SCPI Command Summary
Agilent 81130A SCPI Command
Summary
Command
Parameter
Description
see page
:ARM
(Trigger mode and source)
[:SEQuence[1] | :STARt]
[:LAYer[1]]
:LEVel
[:THReshold]
:TERMination
<value>
<value>
Set/read threshold level at EXT INPUT
43
43
Set/read the termination voltage at EXT IN-
PUT
:MODE
GATed | STARted
Set/read the trigger mode, if the source is
43
not IMMediate
:SENSe
POSitive | NEGative
EXT1| IMM | MAN
Set/read trigger on edge or gate on level
44
44
:SOURce
Set/read trigger source
(EXT INPUT| IMMediate | MAN key)
:INITiate
:CONTinuous
ON | OFF | 1 | 0
Starts or stops the instrument, if the arming
45
45
source is not IMMediate
:CHANnel
:MATH
OFF|DIGital
Set/read addition of channels of channels 1
& 2 at output 1
26
Programming Reference
Agilent 81130A SCPI Command Summary
Command
Parameter
Description
see page
:DIGital
[:STIMulus]
:PATTern
:LOOP
48
45
46
:INFinite
[:STATe]
:STARt
ON | OFF | 1 | 0
Enables/Disables the infinite loop
SEGM1 | SEGM2 |
SEGM3 | SEGM4
Set/read the start of the infinite loop (the
segment to restart the output after the last
bit of the last used segment)
47
[:LEVel[1]]
[:COUNt]
:STARt
<value>
Set/read the segment loop count
SEGM1 | SEGM2 |
SEGM3 | SEGM4
Set/read the start segment for the counted
segment loop
47
48
48
:LENGth
1 | 2 | 3 | 4
Set/read the number of segments within the
segment loop
:PRBS
<base>
Set/read the PRBS base (the same for all
PRBS segments!)
:SEGMent[1|2|3|4]
:DATA[1|2]
<data>
Set/read pattern data
49
52
:LENGth
<segment-length>
Set/read the length of the segment (if the
length is increased, ‘0’ bits are appended)
:PRESet[1|2]
:TYPE[1|2]
÷
[<n>,]<length>
Set preset pattern with frequency CLOCK
Set/read the type of the segment
n
53
53
DATA|
PRBS|HIGH|LOW
[:STATe]
:UPDate
OFF|ON|0|1
Switch PATTERN pulse-mode on or off
Update the hardware with pattern data
OFF|ON|ONCE
54
54
:SIGNal[1|2]
:FORMat
RZ | R1 | NRZ
Set/read data format of output channel
27
Programming Reference
Agilent 81130A SCPI Command Summary
Command
Parameter
Description
see page
:DISPlay
[:WINDow]
[:STATe]
55
ON|OFF|1|0
Set/read frontpanel display state
:MMEMory
:CATalog?
:CDIRectory
:COPY
[A:]
Read directory of memory card
Change directory on memory card
56
56
57
[<name>]
<source>[,A:],<dest> Copy a file on memory card
[,A: ]
:DELete
:INITialize
:LOAD
<name>[,A:]
[A:[DOS]]
Delete a file from memory card
57
58
Initialize memory card to DOS format
:STATe
<n>,<name>
<n>,<name>
Load file from memory card to memory n
Store memory n to memory card
58
58
59
:STORe
:STATe
:OUTPut[1|2]
[:NORMal]
[:STATe]
OFF|ON|1|0
OFF|ON|1|0
Set/read normal output state
:COMPlement
[:STATe]
59
Set/read complement output state
28
Programming Reference
Agilent 81130A SCPI Command Summary
Command
Parameter
Description
see page
[:SOURce]
:CORRection[1|2]
:EDELay
60
[:TIMe]
<value>
Set/read channel delay deskew
:CURRent[1|2]
The CURRent and VOLTage subsystem can-
not be used at the same time. Use the :HOLD
command to select between them.
60
[:LEVel]
[:IMMediate]
[:AMPLitude]
:OFFSet
:HIGH
<value>
<value>
<value>
<value>
Set/read channel amplitude current
Set/read channel offset current
Set/read channel high-level current
Set/read channel low-level current
61
62
63
:LOW
:LIMit
:HIGH
<value>
Set/read maximum current limits
Set/read minimum current limits
Enable/Disable the current limits
Set/read frequency of pulses
63
64
64
65
:LOW
<value>
:STATe
ON|OFF|1|0
<value>
:FREQency
[:CW]
[:FIXed]
:AUTO
ONCE
Do a frequency measurement at CLK IN
66
66
:HOLD[1|2]
VOLT|CURR
Switch between VOLTage and CURRent
command subtrees
29
Programming Reference
Agilent 81130A SCPI Command Summary
Command
Parameter
Description
see page
[:SOURce]
:PHASe[1|2]
[:ADJust]
:PULSe
<value>
<value>
67
Set/read channel phase
:DCYCle[1|2]
:DELay[1|2]
:HOLD
<value>
Set/read channel dutycycle
67
68
69
<value>
Set/read channel delay (to leading edge)
TIME|PRATio
Hold absolute delay|delay as period fixed
with varying frequency
:UNIT
S|SEC|PCT|DEG|
RAD
Set/read delay units
70
70
:HOLD[1|2]
WIDTh | DCYCle |
TDELay
Hold Width|Dutycycle|Trailing edge delay
fixed with varying frequency
:PERiod
<value>
ONCE
Set/read pulse period
70
71
72
72
72
:AUTO
Measure pulse period at CLK IN
Set/read trailing edge delay
:TDelay[1|2]
:TRANsition[1|2]
:UNIT
<value>
S|SEC|PCT
<value>
Set/read transition-time units
Set/read leading-edge transition
Set/read trailing-edge transition
[:LEADing]
:TRAiling
:TRIGger[1]
:MODE
<value>
73
74
CONTinuous | STARt Set/read the mode of the trigger output sig-
nal generation (ignored if not in pattern
mode)
:POSition
:VOLTage
1 | 2 | 3 | 4
Set/read the trigger output signal position
74
74
[:LEVel]
[:IMMediate]
TTL | PECL | SYM |
ECLGND | ECLN2V
Set/read TRIGGER OUTput levels
Set/read channel pulse-width
:WIDTh[1|2]
<value>
75
30
Programming Reference
Agilent 81130A SCPI Command Summary
Command
Parameter
Description
see page
[:SOURce]
:ROSCillator
:SOURce
INTernal|EXTernal
<value>
Set/read PLL reference source
76
76
:EXTernal
:FREQuency
Set/read frequency of external PLL
reference. Value will be rounded to 1 MHz,
2 MHz, 5 MHz or 10 MHz.
:VOLTage[1|2]
[:LEVel]
[:IMMediate]
[:AMPLitude]
:OFFSet
:HIGH
77
<value>
<value>
<value>
<value>
Set/read channel amplitude voltage
Set/read channel offset voltage
Set/read channel high-level voltage
Set/read channel low-level voltage
77
78
79
:LOW
:LIMit
[:HIGH]
:LOW
<value>
Set/read maximum voltage limit
Set/read minimum voltage limit
Enable|Disable the voltage limits
80
80
81
<value>
:STATe
ON|OFF|1|0
31
Programming Reference
Agilent 81130A SCPI Command Summary
Command
Parameter
Description
see page
:STATus
:OPERation
[:EVENt]?
:CONDition
:ENABle
81
81
81
81
81
Read Operation event register
Read Operation condition register
Set/Read Operation enable register
Numeric
Numeric
:NTRansition
Set/Read Operation negative-transition
register
:PTRansition
:PRESet
Numeric
Set/Read positive-transition register
Clear and preset status groups
81
82
82
82
82
82
82
:QUEStionable
[:EVENt]?
Read Questionable event register
Read Questionable condition register
Set/Read Questionable enable register
:CONDition?
:ENABle
Numeric
Numeric
:NTRansition
Set/Read Questionable negative-transition
register
:PTRansition
Numeric
Set/Read Questionable positive-transition
register
32
Programming Reference
Agilent 81130A SCPI Command Summary
Command
Parameter
Description
see page
:SYSTem
:ERRor?
:KEY
Read error queue
84
84
87
87
Numeric
Simulate key press or read last key pressed
no function
:PRESet
:SECurity
[:STATe]
:SET
ON|OFF
Switch security on and off
Block data
Set/read complete instrument setting
Read SCPI compliance setting
88
88
88
:VERSion?
:WARNing
[:COUNt]?
:STRing?
:BUFFer?
Read number of active warnings
Read active warnings as concatenated string 89
Read maximum possible length of
concatenated string
89
:TRIGger
(Pulse mode and period source)
[:SEQuence [1]] | :STARt]
:COUNt
<value>
Set/read number of triggered periods to be
generated per ARM event (BURST period)
89
:PULSes[1|2]
<value>
Set/red the number of pulses within the trig- 92
gered periods at OUTput 1 or OUTput 2
:LEVel
:TERMination
:SOURce
<value>
Set/read termination voltage level at CLK IN 92
IMM | INT[1] | EXT2
Set/read trigger source (Immediate | PLL |
CLK IN)
93
33
Programming Reference
Default Values, Standard Settings
Default Values, Standard Settings
Parameter
*RST, Default Values
:ARM
:LEVel
[:THReshold]
:TERM
+1.0 V
+0.0 V
:MODE
STARted
POS
:SENSe
:SOURce
:CONTinuous
:MATH
IMM
:INITiate
:CHANnel
:DIGital
ON
OFF
:PATTern:
OFF
:LOOP:INFinite
:LOOP:INFinite:STARt
:LOOP
ON
SEGM1
1
:LOOP:STARt
:LOOP:LENGth
:PRBS
SEGM1
1
7
:SEGMent:DATA
:SEGMent:LENGth
:SEGMent:PRESet
:SEGMent:TYPE
:UPDate
see page 49
32, 0, 0, 0
not applicable
DATA
ON
:SIGNal
:FORMat
RZ
:DISPlay
ON
:MMEMory
:CATatalog?
:CDIRectory
:COPY
not applicable
not applicable
not applicable
not applicable
:DELete
34
Programming Reference
Default Values, Standard Settings
Parameter
*RST, Default Values
:INITialize
:LOAD
not applicable
not applicable
not applicable
OFF
:STATe
:STATe
:STORe
:OUTPut
:COMPlement
:EDELay
OFF
:CORRection
:CURRent
0.0 s
20 mA (50 Ω into 50 Ω)
0.0 µA (50 Ω into 50 Ω)
+10 mA (50 Ω into 50 Ω)
:OFFSet
:HIGH
:LOW
–10 mA (50 Ω into 50 Ω)
:LIMit
[:HIGH]
:LOW
+10.0 mA
–10 mA
:STATe
OFF
:FREQuency
1.00 MHz
:AUTO
not applicable
:HOLD
:PHAS
:PULSe
VOLT
0.0
:DCYCle
:DELay
10.0% (derived from Width and Period)
0.00
:HOLD
:UNIT
TIME
SEC
WIDTh
µ
:HOLD
:PERiod
1
s
:AUTO
not applicable
100 ns
:TDELay
:TRANsition
:HOLD
:UNIT
TIME
SEC
35
Programming Reference
Default Values, Standard Settings
Parameter
*RST, Default Values
[:LEADING]
:TRAiling
0.8 ns (Agilent 81131A) or not applicable
0.8 ns (Agilent 81131A) or not applicable
:TRAiling:AUTO
:MODE
ON
:TRIGger:
:WIDTh
STARt
:POSition
1
:VOLTage
TTL
100 ns
:ROSCillator
:VOLTage
:SOURce
INT
:EXTernal
:FREQuency
5 MHz
1.00 V
:OFFSet
:HIGH
:LOW
0.0 mV
500 mV
–500 mV
+500 mV
–500 mV
OFF
:LIMit
[HIGH]
:LOW
:STATe
:STATus
:SYSTem
:OPERation
:PRESet
:QUESTionable
:ERRor?
:KEY
not applicable
not applicable
ON
not applicable
not applicable
not applicable
OFF
:PRESet
:SECurity
:SET
not applicable
“1992.0”
not applicable
not applicable
not applicable
:VERSion?
:WARN?
[:COUNt]
:STRing?
:BUFFer?
36
Programming Reference
Default Values, Standard Settings
Parameter
*RST, Default Values
:TRIGger
:COUNt
1
:PULSes
2
:LEVel
:TERMination
0.0 V
INT
:SOURce
37
Programming Reference
Programming the Instrument Trigger Modes
Programming the Instrument
Trigger Modes
The following figure shows the instrument’s arming/triggering model:
*RST or power on
Idle
Trigger system
initiated(1)
no longer initiated(1)
Initiated
(still) initiated(1)
wait for Arm
completed # of Trigger
loops(2)
or
no longer initiated
Notes:
ARM conditions
satisfied
(1) The instrument is always initiated in CONTINUOUS modes.
The instrument is automatically initiated in MANual started/gated modes.
wait for Trigger
(2) 1 in Pulses Mode (same as :TRIGger:COUNt)
:TRIGger:COUNt in Continuous/Gated Mode
Maximum of :TRIGger:COUNt:PULSes1 and :TRIGger:COUNt:PULSes2
in Started Burst mode
Depends on sequence in Pattern Mode (may be infinite)
Trigger conditions
satisfied
For details of the
trigger count
You program the comprehensive triggering capabilities of the instrument
using the SCPI :ARM and :TRIGger subsystems. Using these two
command, refer to command subsystems you can program the operating modes of the
“:TRIG:COUN” on
page 89.
instrument which are set up using the MODE/TRG screen on the
frontpanel.
Use the :ARM subsystem to select the overall triggering mode of the
instrument (CONTINUOUS, STARTED, GATED , and the :TRIGger
)
subsystem to select the pulse period source, triggering and number of
pulse periods per :ARMevent (BURSTlength). In pattern mode the
pattern length is the sum of each used segment’s length.
38
Programming Reference
Programming the Instrument Trigger Modes
Continuous
Set Continuous mode by arming the instrument from its internal PLL:
:ARM:SOURce IMMediate
Arm from internal PLL
Started
Set Started mode by arming the instrument on low to high level transition
from the EXT INPUT:
:ARM:SOURce EXTernal1
:ARM:MODE STARted
:ARM:SENSe POSitive
:ARM:LEVel:THReshold 1V
Arm from EXT INPUT
Start on the arm event
Arm on positive (high) level
Set EXT INPUT threshold
Gated
Set Gated mode by arming the instrument on levels from the EXT INPUT:
:ARM:SOURce EXTernal1
:ARM:MODE GATed
:ARM:SENSe POSitive
Arm from EXT INPUT
Select gated mode
Arm on positive level
Pulses
Set Pulses mode by setting the :TRIGger:COUNtto 1 so that a single
triggered pulse period is generated for every :ARM event. The trigger
source sets the pulse period:
:TRIGger:COUNt 1
:TRIGger:SOURce INTernal 1
:DIGital:PATTern OFF
Single pulse period per arm event
Pulse period from internal PLL
Disable pattern data.
Pulse period source
:TRIGger SOURce
INTernal[1]
EXTernal2
IMMediate
or
internal PLL
CLK-IN
39
Programming Reference
Programming the Instrument Trigger Modes
Burst
Set Burst mode by setting the :TRIGger:COUNtto the burst count
required. The trigger source sets the pulse period for the pulses within
the burst (See table in “Pulses” on page 39).
:TRIGger:SOURce INTernal1
:DIGital:PATTern OFF
Burst of 16 pulse periods
Pulse period from internal PLL.
Disable pattern data
Pattern
Set Pattern mode by setting the
:DIGital[STIMulus]:PATTern:SEGMent[1|2|3|4]:LENGthto the
required pattern length, and switching on digital pattern data. The trigger
source sets the pulse period for the data pulses (See table in “Pulses” on
page 39):
#Pattern length 512
:DIGital[:STIMulus]:PATTern:SEGMent1:LENGth 512
:DIGital[:STIMulus]:PATTern:SEGMent2:LENGth 0
:DIGital[:STIMulus]:PATTern:SEGMent3:LENGth 0
:DIGital[:STIMulus]:PATTern:SEGMent4:LENGth 0
#Disable counted segment loop
:DIGital[:STIMulus]:PATTern:LOOP:COUNt 1
#Jump back to start of segment 1 after the last bit of the last
segment (here: segment 1)
:DIGital[:STIMulus]:PATTern:LOOP:INFinite[:STATe] ON
:DIGital[:STIMulus]:PATTern:LOOP:INFinite:STARt SEGM1
:TRIGger:SOURce INTernal1
:DIGital:PATTern ON
:DIGital:SIGNal1:FORMat NRZ
:ARM:MODE STARted
Pulse period from internal PLL
Enable pattern data
Set OUTPUT 1 data to NRZ
:ARM:SOURce EXT1
Switch to started by EXT1
40
Programming Reference
Programming the Instrument Trigger Modes
Manually Starting and Gating
When starting and gating with the MAN key use the following commands:
STARTED
GATED
*TRG or :INITiate:CONTinuous ON to start the instrument
:INITiate:CONTinuous OFF to stop the instrument
:INITiate:CONTinuous ON to 'open the gate'
:INITiate:CONTinuous OFF to 'close the gate'
*TRG to gate for approx. 10ms
41
Programming Reference
SCPI Instrument Command List
SCPI Instrument Command List
The following reference sections list the instrument commands in
alphabetical order. In addition to a command description, the attributes
of each command are described under the following headings. Not all of
these attributes are applicable to all commands. The commands are
conform to the IEEE 488.2 SCPI standard.
Command
Long
Shows the short form of the command.
Shows the long form of the command.
Most commands can be used in different forms:
Form
Set
The command can be used to program the instrument
Query
The command can be used to interrogate the instrument. Add a ? to
the command if necessary.
Event
The command performs a one-off action.
Parameter
The type of parameter, if any, accepted by the command. The minimum
and maximum value of numeric parameters can be accessed by the
option MINimum or MAXimum.
Parameter Suffix The suffixes that may follow the parameter.
Functional
Coupling
Any other commands that are implicitly executed by the command.
Value Coupling
Any other parameter that is also changed by the command.
Range Coupling Any other parameters whose valid ranges may be changed by the
command.
*RST value
The value/state following a *RST command.
Specified Limits The specified limits of a parameter.
Absolute Limits
Example
Some parameters can be programmed beyond their specified limits.
Example programming statements.
42
Programming Reference
SCPI Instrument Command List
Command
Long
:ARM:LEV[:THR]
:ARM[:SEQuence[1] | :STARt][:LAYer]:LEVel[:THReshold]
Form
Set & Query
Numeric
Parameter
Parameter Suffix Vwith engineering prefixes.
*RST value
+1.0 V
Specified Limits –1.4 V to +3.7 V
Description
Use this command to program the triggering threshold of the EXT INPUT
connector.
:ARM:LEV 2.5V
Set EXT INPUT threshold to 2.5 V
Example
Command
Long
:ARM:LEV:TERM
:ARM[:SEQuence[1] | :STARt][:LAYer]:LEVel:TERMination
Form
Set & Query
Numeric
Parameter
Parameter Suffix Vwith engineering prefixes.
*RST value
+0.0 V
Specified Limits –2.1 V to +3.3 V
Description
Use this command to program the termination voltage compensation of
the EXT INPUT connector.
:ARM:LEV:TERM 1.0V
Set EXT INPUT termination voltage to 1.0 V
Example
Command
Long
:ARM:MODE
:ARM[:SEQuence[1] | :STARt][:LAYer]:MODE
Form
Set & Query
Parameter
*RST value
STARted | GATed
STARted
43
Programming Reference
SCPI Instrument Command List
Description
Use this command to select
or mode.
STARTED GATED
In the gated mode, the instrument triggers as long as the arming signal is
above (:ARM:SENS POS), or below (:ARM:SENS NEG) the selected
threshold level (:ARM:LEV).
In started mode, the instrument triggers on positive edge
(:ARM:SENS POS) or negative edge (:ARM:SENS NEG).
Command
Long
:ARM:SENS
:ARM[:SEQuence[1] | :STARt][:LAYer]:SENSe
Form
Set & Query
Parameter
*RST value
Description
POSitive | NEGative
POS
Use this command to select the edge or trigger level for the arming
signal.
The instrument triggers at the positive or negative cycle of the arming
signal.
Command
Long
:ARM:SOUR
:ARM[:SEQuence[1] | :STARt][:LAYer]:SOURce
Form
Set & Query
Parameter
*RST value
Description
IMMediate | EXTernal1 | MANual
IMM
Use this command to select the triggering mode of the instrument by
selecting the source of the arming signal:
Triggering Source :ARM:SOURce
Mode
IMMediate
EXTernal1
MANual
Internal PLL
EXT INPUT
MAN key
Continuous
Triggered | Gated by: EXT IN
Triggered | Gated by: MANKey
Use :ARM:MODE STARTed|GATedto select the mode.
44
Programming Reference
SCPI Instrument Command List
Command
Long
:INIT:CONT
:INITiate:CONTinuous
Set & Query
Form
Parameter
*RST value
Description
ON | OFF | 1 | 0
ON
Use this command to enable/disable automatic restart of the instrument
(equal to start and stop the instrument). If :ARM:SOURceis set to
IMMediate, the value of :INITiate:CONTinuousis ignored.
Command
Long
:CHAN:MATH
:CHANnel:MATH
Set & Query
OFF | DIGital
OFF
Form
Parameter
*RST value
Description
Use this command to enable or disable digital channel addition in an
instrument with two Output channels installed.
With :CHAN:MATH DIGitalthe digital signals from both channels are
”xor’ed” (before the slopes are applied) at OUTPUT 1. The signal of
OUTPUT 2 can be used in parallel.
This allows you to for example to simulate single or repeated glitches.
Command
Long
:DIG:PATT:LOOP
:DIGital[:STIMulus]:PATTern:LOOP[:LEVel[1]][:COUNt]
Form
Set & Query
Numeric
1
Parameter
*RST value
Specified Limits 1 to 2^20
45
Programming Reference
SCPI Instrument Command List
Description
Example
Use this command to set up a counted loop across one or more
segments.
If nested loops are used, the counted loop must be embedded into the
infinite loop completely.
To set up an infinite loop over segment 2 to segment 4 and a counted loop
across segment 2 and segment 3:
:ARM:SOUR EXT1
:ARM:MODE STAR
:ARM:SENS POS
Set arming source to EXT-IN
Set arming mode to started
Arm on positive level
:DIG:PATT:LOOP:INF:STAR SEGM2
:DIG:PATT:LOOP 100
Set jump destination to segment 2
Set number of repetitions of
segment2 and segment 3
Set start of counted loop
Set length of counted loop
Switch on PATTERN mode
:DIG:PATT:LOOP:STAR SEGM2
:DIG:PATT:LOOP:LENG 2
:DIG:PATT ON
Command
Long
:DIG:PATT:LOOP:INF
:DIGital[:STIMulus]:PATTern:LOOP:INFinite[:STATe]
Form
Set & Query
ON | OFF | 1 | 0
ON
Parameter
*RST value
Description
Use this command to set up an infinite loop from the last used segment
to the destination segment.
The infinite loop is ignored, if :ARM:SOURceis IMMediate
(CONTINUOUS mode), since in continuous mode there has to be a jump
back to the start of the pattern (always from segment 4 to segment 1).
Example
To setup an infinite loop over segment 2 to segment 4:
:ARM:SOUR EXT1
:ARM:MODE STAR
:ARM:SENS POS
Set arming source to EXT-IN
Set arming mode to started
Arm on positive level
:DIG:PATT:LOOP:INF ON
:DIG:PATT:LOOP:INF:STAR SEGM2
:DIG:PATT:LOOP 1
:DIG:PATT ON
Enable infinite loop
Set jump destination to segment 2
Disable counted loop
Switch on PATTERN mode
46
Programming Reference
SCPI Instrument Command List
Command
Long
:DIG:PATT:LOOP:INF:STAR
:DIGital[:STIMulus]:PATTern:LOOP:INFinite:STARt
Set & Query
Form
Parameter
*RST value
Description
SEGM1 | SEGM2 | SEGM3 | SEGM4 | 1 | 2 | 3 | 4
SEGM1
Use this command to set up the destination segment.
The infinite loop is ignored, if :ARM:SOURce is IMMediate
(CONTINUOUS mode), since in continuous mode there has to be a jump
back to the start of the pattern (always from segment 4 to segment 1).
Example
See previous example (page 46).
Command
Long
:DIG:PATT:LOOP:STAR
:DIGital[:STIMulus]:PATTern:LOOP[:LEVel[1]]:STARt
Form
Set & Query
Parameter
*RST value
Description
SEGM1 | SEGM2 | SEGM3 | SEGM4 | 1 | 2 | 3 | 4
SEGM1
Use this command to set the first segment within a counted loop. The
start of the counted loop must be within the infinite loop (if used).
Example
To set up an infinite loop over segment 2 to segment 4 and a counted loop
across segment 2 and segment 3:
:ARM:SOUR EXT1
:ARM:MODE STAR
:ARM:SENS POS
Set arming source to EXT-IN
Set arming mode to started
Arm on positive level
:DIG:PATT:LOOP:INF ON
:DIG:PATT:LOOP:INF:STAR SEGM2
:DIG:PATT:LOOP 100
Switch on infinite loop
Set jump destination to segment 2
Set number of repetitions of
segment2 and segment 3
Set start of counted loop
Set length of counted loop
Switch on PATTERN mode
:DIG:PATT:LOOP:STAR SEGM2
:DIG:PATT:LOOP:LENG 2
:DIG:PATT ON
47
Programming Reference
SCPI Instrument Command List
Command
Long
:DIG:PATT:LOOP:LENG
:DIGital[:STIMulus]:PATTern:LOOP[:LEVel[1]]:LENGth
Form
Set & Query
1 | 2 | 3 | 4
1
Parameter
*RST value
Description
Use this command to set the number of segments to be repeated within
the counted loop.
Example
See previous example (page 47).
Command
Long
:DIG:PATT
:DIGital[:STIMulus]:PATTern[:STATe]
Form
Set & query
Parameter
*RST value
Description
ON | OFF | 1 | 0
OFF
Use this command to enable and disable PATTERN mode.
Command
Long
:DIG:PATT:PRBS
:DIGital[:STIMulus]:PATTern:PRBS
Form
Set & Query
Numeric
7
Parameter
*RST value
Specified Limits 7 to 15 (integer)
Description
Use this command to set up PRBS polynom for all PRBS segments on all
channels.
48
Programming Reference
SCPI Instrument Command List
10
Example
To set up a repeating 2 –1 PRBS on OUTPUT 1:
:ARM:SOUR IMM
Set continuous mode
:DIG:PATT:SEGM1:LENG 1023
Set segment 1 pattern length (last
bit) to 1023
:DIG:PATT:SEGM2:LENG 0
:DIG:PATT:SEGM3:LENG 0
:DIG:PATT:SEGM4:LENG 0
:DIG:PATT:SEGM1:TYPE1 PRBS
Set segment 2 to be ignored
Set segment 3 to be ignored
Set segment 4 to be ignored
Set type of segment 1 on channel 1
to PRBS
:DIG:PATT:LOOP 1
:DIG:PATT:PRBS 10
:DIG:PATT ON
Disable segment looping
Set PRBS base to 10
Switch on PATTERN mode
Command
Long
:DIG:PATT:SEGM[1|2|3|4]:DATA[1|2]
:DIGital[:STIMulus]:PATTern:SEGMent[1|2|3|4]:DATA[1|2]
Form
Set & Query
<data>
Parameter
*RST value
Segment 1
Channel
[1|2]
Description
Bit 1
Bit 2
1
2
CH1 (OUTPUT 1)
CH2 (OUTPUT 2)
1
0
0
1
Segment 2 to Segment 4 set to all bits set to zero.
49
Programming Reference
SCPI Instrument Command List
Description
Use this command to set or read a segment’s data of one or all channels
starting from Bit 1. The <data> is an arbitrary block of program data as
defined in IEEE 488.2 7.7.6.2, for example:
#1511213
#
1
5
Start of block
Length of the length of the data
Length of the data
11213 5 bytes of data
#2161000100010001000
#
Start of block
Length of the length of the data
2
16
10...00 16 bytes of data
#011213
#
0
Start of block
Replaces the data block length specification. Length is
calculated automatically.
11213 5 bytes of data
NOTE
The data length meets the same restrictions, than the segment length
(see page 52).
Example
:DIG:PATT:SEGM1:DATA #1511213
50
Programming Reference
SCPI Instrument Command List
The instrument uses each byte of data set one Bit in the pattern memory.
If you don’t specify a particular channel, the lowest two bits of each byte
are used to set all three channels, and the top six bits are ignored. Note
that you can therefore use the ASCII characters ‘0’,‘1’,‘2’ and ‘3’, to
program Outputs 1 and 2 in binary:
DATA
CH2
CH1
OUTPUT2
OUTPUT1
ASCII
ignored
used
D7 D6 D5 D4 D3 D2
D1 D0
0
1
2
3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
1
1
0
1
0
1
0
0
1
1
0
1
0
1
:DIG:PATT:SEGM1:DATA2 #1501011
If you specify a particular channel, the least significant bit of each byte is
used to set the selected channel, and the top seven bits are ignored. Note
that you can therefore use the ASCII characters ‘1’ and ‘0’ to set
individual bits to 1 and 0:
DATA
CH2
CH1
OUTPUT2
OUTPUT1
ASCII
ignored
LSB
D0
D7 D6 D5 D4 D3 D2 D1
remains unchanged
0
1
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
1
0
1
remains unchange
d
:ARM:SOUR IMM
Set continuous mode
Example
:DIG:PATT:SEGM1:DATA1 #1501011
:DIG:PATT:SEGM1:LENG 5
:DIG:PATT ON
Set up pattern data for channel 1
Set pattern length (last bit) to 5
Switch on PATTERN mode
51
Programming Reference
SCPI Instrument Command List
Command
Long
:DIG:PATT:SEGM[1|2|3|4]:LENG
:DIGital[:STIMulus]:PATTern:SEGMent[1|2|3|4]:LENGth
Form
Set & Query
Parameter
*RST value
Numeric
32, 0, 0, 0 (segment 1 = 32, segments 2, 3, and 4 = 0)
Specified Limits 0 to 65504
Description
Use this command to set up the number of bits within a segment. If a
segment is set to a length of 0, the segment will be skipped.
Restrictions:
• At least one segment’s length has to be > 0.
• The overall length of the pattern has to be <= 65504 and >= two times
segment length resolution.
• If at least one segment is used to generate a PRBS, the overall pattern
length has to be <= 32768.
• The segment length has a resolution that depends on the current set
frequency/period.
• The segment at the start of a counted loop has a minimum length of 2
times the resolution.
Segment Length Resolution
Pulse Period
(length must be multiple of ...)
< 3ns
16
8
3ns ... < 6ns
6ns ... < 12ns
12ns ... < 24ns
>= 24ns
4
2
1
NOTE
Every change of a segment length will cause the unused pattern data to
be overwritten (no undo!).
52
Programming Reference
SCPI Instrument Command List
Command
Long
:DIG:PATT:SEGM[1|2|3|4]:PRES[1|2]
:DIGital[:STIMulus]:PATTern:SEGMent[1|2|3|4]:PRESet[1|2]
Form
Set
Parameter
*RST value
<n>,<length>
Not applicable
Specified Limits <n>
0 to 32768 (integer)
<length> 1 to 65504 (integer)
Description
Use this command to set up clock data starting from bit 1 with value 1.
The parameter <n> is used as the divider to generate a CLOCK÷n
sequence (squarewave if NRZ data is selected). The parameter <length>
determines the length of the segment.
n=0 Fill with 0
n=1 Fill with 1
n=2 Sequence = 101010101010101....
n=4 Sequence = 110011001100110....
n=6 Sequence = 111000111000111....
n=8 Sequence = 111100001111000....
and so on.
NOTE
The data length meets the same restrictions, than the segment length
(see page 52).
Command
Long
:DIG:PATT:SEGM[1|2|3|4]:TYPE[1|2]
:DIGital[:STIMulus]:PATTern:SEGMent[1|2|3|4]:TYPE[1|2]
Form
Set & Query
Parameter
*RST value
DATA | PRBS | HIGH | LOW
DATA
53
Programming Reference
SCPI Instrument Command List
Description
Use this command to set the type of the segment for one channel.
If the segment type of one channel is set to PRBS the other channel may
not be set to DATA.
If at least one channel uses PRBS, then the segment type combination
used in this segment has to be used in every segment that shall generate a
PRBS.
Command
Long
:DIG:PATT:UPD
:DIGital[:STIMulus]:PATTern:UPDate
Set & query
Form
Parameter
*RST value
Description
ON | OFF | ONCE
ON
Use this command to enable and disable the automatic updating of the
pattern generating hardware following a
:DIG:PATT:SEGM[1|2|3|4]:DATAcommand. Disable the automatic
updating if you want to set up new pattern data in the instrument without
affecting the pattern which is currently being generated. You can then
update the hardware with the new pattern data by sending a
:DIG:PATT:UPD ONCEcommand.
Command
Long
:DIG:SIGN[1|2]:FORM
:DIGital[:STIMulus]:SIGNal[1|2]:FORMat
Set & Query
Format
Parameter
RZ | NRZ | R1
Range Coupling Period, Frequency
*RST value
RZ
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Programming Reference
SCPI Instrument Command List
Description
Use this command to set and read the data format of channels 1 and 2
when using PATTERN mode. If you don’t specify a channel number in the
command, channel 1 is assumed.
RZ
Return to Zero. An RZ pulse is generated for each ‘1’ in
the data. You can vary the width, edges and levels of the
pulse.
R1
Return to One. An R1 pulse is generated for each ‘0’ in
the data. You can vary the width, edges and levels of the
pulse.
NRZ
Non Return to Zero. A pulse of 100% dutycycle is
generated for each ‘1’ in the data. You can vary the
edges and levels of the pulse.
:DIG:SIGN:FORM NRZ
Set channel 1 data format to NRZ
Example
Command
Long
:DISP
:DISPlay[:WINDow][:STATe]
Set & Query
Form
Parameter
*RST value
Description
ON | OFF | 1 | 0
ON
This command is used to turn the frontpanel display on and off.
Switching off the display improves the programming speed of the
instrument.
NOTE
*RST switches the display back on.
DISP OFF
Switch off the frontpanel display
Example
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Programming Reference
SCPI Instrument Command List
Command
Long
:MMEM:CAT?
:MMEMory:CATalog?
Query
Form
Parameter
*RST value
Description
["A:"]
Not applicable
Use this command to get a listing of the contents of the currently
selected directory on the memory card. As there is only one memory card
slot, the parameter A: is optional. The information returned is:
<BYTES_USED>,<BYTES_FREE>{,<FILE_ENTRY>}
<bytes_used> The total number of bytes used on the memory card.
<bytes_free> The total number of bytes still available on the memory
card.
<file_entry>
String containing the name, type and size of one file:
"<FILE_NAME>,<FILE_TYPE>,<FILE_SIZE>"
NOTE
The <file_type> is always blank. A directory name has <file_size> = 0
Command
Long
:MMEM:CDIR
:MMEMory:CDIRectory
Event
Form
Parameter
*RST value
Description
["directory_name"]
Not applicable
Use this command to change the current directory on the memory card.
If you don’t specify a directory name parameter, the root directory is
selected.
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Programming Reference
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NOTE
Note that you cannot use DOS pathnames as directory names, you can
only select a directory name within the current directory.
Use the directory name ".." to move back to the parent directory of the
current directory, unless you are already in the root directory "\".
:MMEM:CDIR
:MMEM:CDIR ""PERFORM""
:MMEM:CDIR ""..""
Select root directory
Examples
Select directory "PERFORM"
Select parent directory
Command
Long
:MMEM:COPY
:MMEMory:COPY
Event
Form
Parameter
*RST value
Description
"filename"[,"A:"],"copyname"[,"A:"]
Not applicable
Use this command to copy an existing file filename in the current
directory to a new file copyname. If copyname is the name of a sub-
directory in the current directory, a copy of the file filename is made in
the sub-directory. Use ".." as copyname to copy a file into the parent
directory of the current directory.
:MMEM:COPY ""test1"",""test2""
:MMEM:COPY ""test1"",""..""
Copy test1 to test2
Examples
Copy test1 into parent directory
Command
Long
:MMEM:DEL
:MMEMory:DELete
Event
Form
Parameter
*RST value
Description
"filename"
Not applicable
Use this command to delete file filename from the currently selected
directory.
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Programming Reference
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Command
Long
:MMEM:INIT
:MMEMory:INITialize
Form
Event
Parameter
*RST value
Description
["A:"[,"DOS"]]
Not applicable
Use this command to initialize a memory card to DOS format.
CAUTION
Initializing a memory card destroys any existing data on the card.
Command
Long
:MMEM:LOAD:STAT
:MMEMory:LOAD:STATe
Event
Form
Parameter
*RST value
<n>,"filename"[,"A:"]
Not applicable
Specified Limits <n> = 0 to 4 (integer)
Description
Use this command to load a complete instrument setting from file
filename in the current directory into memory <n> in the instrument.
Memories 1 to 4 are the internal memories. Use memory 0 to load a
setting as the current instrument setting.
Examples
See next command
Command
Long
:MMEM:STOR:STAT
:MMEMory:STORe:STATe
Event
Form
Parameter
*RST value
<n>,"filename"[,"A:"]
Not applicable
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Programming Reference
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Specified Limits <n> = 0 to 4 (integer)
Description
Use this command to store a complete instrument setting from memory
<n> to file filename in the current directory on the memory card.
Memories 1 to 4 are the internal memories. Use memory 0 to store the
current instrument setting to a file.
:MMEM:LOAD:STAT 1,""FREQPERF""
:MMEM:LOAD:STAT 0,""AMPTEST""
:*SAV 2
:MMEM:STOR:STAT 2,""SETTING2""
:*RCL 3
Load FREQPERF into memory 1
Load AMPTEST as current setting
Save current setting in memory 2
Store memory 2 to file “SETTING2”
Recall memory 3 as current setting
Examples
Command
Long
:OUTP[1|2]
:OUTPut[1|2][:NORMal][:STATe]
Form
Set & Query
Parameter
*RST value
Description
Example
ON | OFF | 1 | 0
OFF
Use this command to switch the normal OUTPUTs on or off.
:OUTP1 ON
:OUTP2 OFF
Switch on OUTPUT 1
Switch off OUTPUT 2
Command
Long
:OUTP[1|2]:COMP
:OUTPut[1|2]:COMPlement[:STATe]
Form
Set & Query
Parameter
*RST value
Description
Example
ON | OFF | 1 | 0
OFF
Use this command to switch the complement OUTPUTs on or off.
:OUTP1:COMP ON
:OUTP2:COMP OFF
Switch on complement OUTPUT 1
Switch off complement OUTPUT 2
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Command
Long
:CORR[1|2]:EDELay
[:SOURce]:CORRection[1|2]:EDELay[:TIMe]
Form
Set & Query
Numeric
Parameter
Parameter suffix S with engineering prefixes.
*RST value
0.0 s
Specified Limits –25.0 ns to +25.0 ns
Description
Use this command to program the OUTPUT Deskew delay. This allows
you to deskew the OUTPUTS so that the zero-delay points of both
OUTPUT signals are the same at the device-under-test.
:CORR1:EDEL 0NS
:CORR2:EDEL 5.18NS
Set OUTPUT 1 DESKEW to 0
Example
Set OUTPUT 2 DESKEW to 5.18 ns
Command
Long
:CURR[1|2]
[:SOURce]:CURRent[1|2][:LEVel][:IMMediate][:AMPLitude]
Form
Set & Query
Numeric
Parameter
Parameter suffix A with engineering prefixes.
*RST value
20 mA (50 Ω into 50 Ω)
Specified Limits 3.8 V Outputs (50 Ω into short): max. 152 mA typical
3.0 V Outputs (50 Ω into short): max. 120 mA typical
Value coupling
Amplitude = High – Low
High – Low
Offset =
2
Range coupling Offset
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Programming Reference
SCPI Instrument Command List
Description
Example
This command programs the amplitude current of the OUTPUT signal.
Note that to set the OUTPUT levels in terms of current, you first have to
execute the [:SOURce]:HOLD CURRent command to enable the
[:SOURce]:CURRent subsystem.
The available current range is limited by the specified voltage limits.
:HOLD CURR
:CURR1 75MA
Enable CURRENT subsystem
Set OUTPUT 1 amplitude to 75 mA
Command
Long
:CURR[1|2]:OFFSet
[:SOURce]:CURRent[1|2][:LEVel][:IMMediate]:OFFSet
Form
Set & Query
Numeric
Parameter
Parameter suffix A with engineering prefixes.
*RST value
0.0 µA (50 Ω into 50 Ω)
Specified Limits 3.8 V Outputs (50 Ω into short): max. 152 mA typical
3.0 V Outputs (50 Ω into short): max. 120 mA typical
Value coupling
Amplitude = High – Low
High – Low
Offset =
2
Range coupling Amplitude
Description
This command programs the offset current of the OUTPUT signal. Note
that to set the OUTPUT levels in terms of current, you first have to
execute the [:SOURce]:HOLD CURRent command to enable the
[:SOURce]:CURRent subsystem
.
The available current range is limited by the specified voltage limits.
:HOLD CURR
:CURR1:OFF 50MA
Enable CURRENT subsystem
Set OUTPUT 1 offset to 50 mA
Example
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Programming Reference
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Command
Long
:CURR[1|2]:HIGH
[:SOURce]:CURRent[1|2][:LEVel][:IMMediate]:HIGH
Form
Set & Query
Numeric
Parameter
Parameter suffix A with engineering prefixes.
*RST value
+10 mA (50 Ω into 50 Ω)
Specified Limits 3.8 V Outputs (50 Ω into short): max. 152 mA typical
3.0 V Outputs (50 Ω into short): max. 120 mA typical
Value coupling
Amplitude = High – Low
High – Low
Offset =
2
Range coupling Low-level
Description
This command programs the High-level current of the OUTPUT signal.
Note that to set the OUTPUT levels in terms of current, you first have to
execute [:SOURCE]:HOLD CURRent command to enable the
[:SOURCE]:CURRent subsystem.
The available current range is limited by the specified voltage limits.
:HOLD CURR
:CURR1:HIGH 150MA
Enable CURRENT subsystem
Example
Set OUTPUT 1 High-level to 150 mA
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Command
Long
:CURR[1|2]:LOW
[:SOURce]:CURRent[1|2][:LEVel][:IMMediate]:LOW
Form
Set & Query
Numeric
Parameter
Parameter suffix A with engineering prefixes.
*RST value
–10 mA (50 Ω into 50 Ω)
Specified Limits 3.8V Outputs (50 Ω into short): max. 152 mA typical
3.0V Outputs (50 Ω into short): max. 120 mA typical
Value coupling
Amplitude = High – Low
High – Low
Offset =
2
Range coupling High-level
Description
This command programs the Low-level current of the OUTPUT signal.
Note that to set the OUTPUT levels in terms of current, you first have to
execute the [:SOURce]:HOLD CURRent command to enable the
[:SOURce]:CURRent subsystem.
The available current range is limited by the specified voltage limits.
:HOLD CURR
:CURR1:LOW 50 MA
Enable CURRENT subsystem
Example
Set OUTPUT 1 Low-level to 50 mA
Command
Long
:CURR[1|2]:LIM
[:SOURce]:CURRent[1|2]:LIMit[:HIGH]
Form
Set & Query
Numeric
Parameter
Parameter suffix A with engineering prefixes.
*RST value
+10.0 mA
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Description
Use this command to set/read the High-level current limit. If you switch
on current limiting, the High-level current cannot be set above the
programmed limit.
NOTE
The current is NOT limited by the OUTPUT hardware, this is a software
limit.
:HOLD CURR
:CURR1:LIM 50 MA
:CURR1:LIM:STAT ON
Enable CURRENT subsystem
Example
Set OUTPUT 1 High-level current limit to 50 mA
Switch on OUTPUT 1 limits
Command
Long
:CURR[1|2]:LIM:LOW
[:SOURce]:CURRent[1|2]:LIMit:LOW
Form
Set & Query
Numeric
Parameter
Parameter suffix A with engineering prefixes.
*RST value
Description
–10.0 mA
Use this command to set/read the Low-level current limit. If you switch
on current limiting, the Low-level current cannot be set below the
programmed limit.
NOTE
The current is NOT limited by the OUTPUT hardware, this is a software
limit.
:HOLD CURR
:CURR1:LIM:LOW -50MA
:CURR1:LIM:STAT ON
Enable CURRENT subsystem
Example
Set OUTPUT 1 Low-level current limit to – 50mA
Switch on OUTPUT 1 limits
Command
Long
:CURR[1|2]:LIM:STAT
[:SOURce]:CURRent[1|2]:LIMit:STATe
Set & Query
Form
Parameter
ON | OFF | 1 | 0
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*RST value
Description
OFF
This command switches the output limits on or off. When you switch on
the output limits cannot program the output-levels beyond the
programmed limits, until you switch off the output-limits. The limits
apply whether you program High/Low levels or Amplitude/Offset levels.
NOTE
You can switch the limits on and off in both the
[:SOURce]:CURRent and the [:SOURce]:VOLTage
subsystems
but the current and voltage limits are not enabled/ disabled
independently. The voltage and current limits are always enabled/
disabled together.
:HOLD CURR
Enable CURRENT subsystem
Example
:CURR1:LIM 50MA
:CURR1:LIM:LOW -50MA
:CURR1:LIM:STAT ON
Set OUTPUT 1 High-level current limit to 50 m
Set OUTPUT 1 LOW-level current limit to –50mA
Switch on OUTPUT 1 limits
Command
Long
:FREQ
[:SOURce]:FREQuency[:CW][:FIXed]
Form
Set & Query
Numeric
Parameter
Parameter Suffix Hz with engineering prefixes, or MHZ for Megahertz.
*RST value
1.00 MHz
Specified limits Agilent 81131A: 1 kHz to 400 MHz
Agilent 81132A: 1 kHz to 660 MHz
Value coupling
1
Period =
Frequency
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Programming Reference
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Description
Use this command to set/read the pulse frequency. Select the frequency
source for the pulse frequency using :TRIGger:SOURce. The currently
selected source is programmed by this command. Note that the specified
limits and available resolution depend on the selected source.
You cannot set the pulse frequency if you have selected the CLK IN
connector as the frequency source (:TRIG:SOUR EXT).
:TRIG:SOUR INT
:FREQ 75MHz
Select internal PLL as pulse trigger
Set pulse frequency to 75 MHz
Example
Command
Long
:FREQ:AUTO
[:SOURce]:FREQuency[:CW][:FIXed]:AUTO
Form
Event
Parameter
*RST value
Description
ONCE
Not applicable
Use this command to measure the frequency at the CLK IN connector. If
the CLK IN connector is the selected pulse frequency source, you can
then read the measured value with :FREQ?
:TRIG:SOUR EXT2
:FREQ:AUTO ONCE
:FREQ?
Select ext CLK IN as pulse trigger
Measure frequency at CLK IN
Query pulse frequency
Example
Command
Long
:HOLD
[:SOURce]:HOLD
Set & Query
VOLTage | CURRent
VOLT
Form
Parameter
*RST value
Description
Use this command to enable either of the [:SOURce]:VOLTageor
[:SOURce]:CURRent subsystems.
You can control the signal levels of the instrument OUTPUTs in terms of
voltage or current.
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Command
Long
:PHAS[1|2]
[:SOURce]:PHASe[1|2][:ADJust]
Set & Query
Form
Parameter
Numeric
Parameter suffix DEGor RAD. A parameter without a suffix is interpreted as RAD.
*RST value
0.0
Specified limits 0 to 360° constrained by delay and period limits.
Value coupling
Phase
× Period
Delay =
360
Functional
coupling
Programming the pulse phase also executes [:SOURce]:PULSe:HOLD
PHASeso that the pulse phase is held constant when the signal frequency
is changed.
Description
Use this command to set/read the relative phase-delay of the output
signal. This is equivalent to setting an absolute or percentage pulse-delay
with [:SOURce]:PULSe:DELay.
If you want the phase delay to remain constant when the pulse period is
varied (rather than the absolute pulse delay) use
[:SOURce]:PULSe:DELay[1|2]:HOLD PRATio.
:PULS:DEL1 500NS
:PHAS2 180 DEG
:PULS:DEL1:HOLD TIM
:PULS:DEL2:HOLD PRAT
Set OUTPUT 1 delay to 500ns
Example
°
Hold OUTPUT 1 delay constant with varying perio
Set OUTPUT 2 phase to 180
d
Hold OUTPUT 2 phase constant with varying period
Command
Long
:PULS:DCYC[1|2]
[:SOURce]:PULSe:DCYCle[1|2]
Set & Query
Form
Parameter
Numeric
Parameter suffix PCT
*RST value
10.0% (derived from Width and Period)
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Programming Reference
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Specified limits 0.1 – 99.9%, depends on Width & Period.
Value coupling
Duty Cycle
Width =
×
Period
100
Description
Example
Use this command to program the dutycycle of the pulse signal. If you
want to set an absolute pulse-width use
[:SOURce]:PULSe:WIDTh[1|2].
If you want the pulse dutycycle to remain constant when the pulse period
is varied (rather than the absolute pulse width use)
[:SOURce]:PULSe:HOLD[1|2] DCYCle
:PULS:DCYC1 25PCT
:PULS:HOLD1 DCYC
Set OUTPUT 1 dutycycle to 25%
Hold dutycycle constant with varying period
Command
Long
:PULS:DEL[1|2]
[:SOURce]:PULSe:DELay[1|2]
Set & Query
Form
Parameter
Numeric
Parameter suffix Swith engineering prefixes. You can change the default unit using
[:SOURce]:PULSe:DELay[1|2]:UNIT.
*RST value
0.0
Specified limits 0 to 3.00 µs
Value coupling
Delay
Period
Phase =
× 360
× 100
Delay
Period
Delay% =
68
Programming Reference
SCPI Instrument Command List
Description
Example
Use this command to set/read the pulse-delay. Delay is the time between
the start of the pulse period and the start of the leading-edge of the pulse.
If you want the pulse-delay to remain constant when the pulse period is
varied (rather than the phase-delay) use
[:SOURce]:PULSe:DELay[1|2]:HOLD TIME.
:PULS:DEL1 500NS
:PHAS2 180 DEG
:PULS:DEL1:HOLD TIME
Set OUTPUT1 delay to 500 ns
°
Set OUTPUT 2 phase to 180
Hold OUTPUT 1 delay constant with
varying period
:PULS:DEL2:HOLD PRAT
Hold OUTPUT 2 phase constant with
varying period
Command
Long
:PULS:DEL[1|2]:HOLD
[:SOURce]:PULSe:DELay[1|2]:HOLD
Form
Set & Query
TIME | PRATio
TIME
Parameter
*RST value
Description
Use this command to set/read the coupling between the pulse period and
the pulse-delay:
TIME
The absolute pulse-delay is held fixed when the pulse period is
varied (Pulse phase varies).
PRATio
The pulse phase-delay (delay as ratio of period) is held fixed
when the pulse period is varied. (Pulse-delay varies).
:PULS:DEL1 500ns
:PHAS2 180DEG
:PULS:DEL1:HOLD TIME
:PULS:DEL2:HOLD PRAT
Set OUTPUT 1 delay to 500ns
Example
°
Set OUTPUT 2 phase to 180
Hold OUTPUT 1 delay constant with varying period
Hold OUTPUT 2 phase constant with varying period
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Programming Reference
SCPI Instrument Command List
Command
Long
:PULS:DEL[1|2]:UNIT
[:SOURce]:PULSe:DELay[1|2]:UNIT
Form
Set & Query
Parameter
*RST value
Description
S | SEC | PCT | DEG | RAD
SEC
Use this command to set/read the default units for the pulse-delay
parameter. The default unit of a parameter is the unit used when the
parameter is programmed to a value without a unit suffix.
:PULS:DEL1:UNIT PCT
:PULS:DEL1 50
Set OUTPUT 1 delay unit to %
Example
Set OUTPUT 1 delay to 50% of period
Command
Long
:PULS:HOLD[1|2]
[:SOURce]:PULSe:HOLD[1|2]
Set & Query
Form
Parameter
*RST value
Description
WIDTh | DCYCle | TDELay
WIDTh
Use this command to set whether the pulse-width, the pulse-dutycycle or
the pulse trailing-edge delay is held constant when the pulse period is
changed.
:PULS:DEL:HOLD1 TIME
:PULS:DEL 20NS
Hold OUTPUT 1 delay fixed when frequency varies
Set OUTPUT 1 delay to 20ns
Example
:PULS:HOLD1 DCYC
Hold OUTPUT 1 Dutycycle fixed when frequency
varies
:PULS:DCYC 25PCT
Set OUTPUT 1 Dutycycle to 25%
Command
Long
:PULS:PER
[:SOURce]:PULSe:PERiod
Set & Query
Form
Parameter
Numeric
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Programming Reference
SCPI Instrument Command List
Parameter Suffix Swith engineering prefixes.
*RST value
1 µs
Specified limits Agilent 81131A: 2.5 ns to 1 ms
Agilent 81132A: 1.5 ns to 1 ms
Value coupling
1
Frequency =
Period
Description
Example
Use this command to set/read the pulse period. Select the pulse period
source using :TRIGger:SOURce. The currently selected source is
programmed by this command. Note that the specified limits and
available resolution depend on the selected source.
You cannot set the pulse period if you have selected the CLK IN
connector as the frequency source (:TRIG:SOUR EXT2).
:TRIG:SOUR INT
:PULS:PER 25NS
Select internal PLL as pulse trigger
Set pulse frequency to 25 ns
Command
Long
:PULS:PER:AUTO
[:SOURce]:PULSe:PERiod:AUTO
Form
Event
Parameter
*RST value
Description
ONCE
Not applicable
Use this command to measure the period at the CLK IN connector. If the
CLK IN connector is the selected pulse period source, you can then read
the measured value with :PULS:PER?
:TRIG:SOUR EXT2
:PULS:PER:AUTO ONCE
:PULS:PER?
Select ext CLK IN as pulse trigger
Measure period at CLK IN
Query pulse period
Example
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Programming Reference
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Command
Long
:PULS:TDEL[1|2]
[:SOURce]:PULSe:TDELay[1|2]
Set & Query
Form
Parameter
Numeric
Parameter Suffix S with engineering prefixes.
*RST value
100 ns
Specified Limits Agilent 81131A: 1.25 ns to 999.9 µs
Agilent 81132A: 0.75 ns to 999.9 µs
Description
Example
Use this command to program the delay of the trailing-edge of the pulse
relative to the start of the pulse period. This is an alternative method of
programming the pulse-width.
:PULS:DEL1 500NS
Set OUTPUT 1 delay to 500 ns
:PULS:DEL1:HOLD TIME
:PULS:TDEL1 750NS
Hold OUTPUT 1 delay constant with varying period
Set OUTPUT 1 trailing delay to 750 ns
Command
Long
:PULS:TRAN[1|2]:UNIT
[:SOURce]:PULSe:TRANsition[1|2]:UNIT
Form
Set & Query
S | SEC | PCT
SEC
Parameter
*RST value
Description
Use this command to set the default units for the pulse transition-times.
The default unit is used when the parameter is programmed to a value
without a unit suffix.
Command
Long
:PULS:TRAN[1|2]
[:SOURce]:PULSe:TRANsition[1|2][:LEADing]
Form
Set & Query
Numeric
Parameter
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Programming Reference
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Parameter suffix Swith engineering prefixes
*RST value
0.8 ns
Specified limits Agilent 81131A: 0.8 ns or 1.6 ns
Parameter
coupling
Trailing-edge = Leading-edge fixed coupled
Description
Use this command to set/read the transition-time of the pulse leading-
edge. Note that the leading and trailing edges of the pulse have to fit
within the defined pulse-width.
:PULS:TRAN1 1.6NS
Set OUTPUT 1 leading edge to 1.6 ns
Example
NOTE
Selectable transition time is only available with Agilent 81131A.
Command
Long
:PULS:TRAN[1|2]:TRA
[:SOURce]:PULSe:TRANsition[1|2]:TRAiling
Form
Set & Query
Numeric
Parameter
Parameter suffix Swith engineering prefixes.
*RST value
0.8 ns
Specified limits Agilent 81131A: 0.8 ns or 1.6 ns
Parameter
coupling
Trailing-edge = Leading-edge fixed coupled
Description
NOTE
Use this command to set/read the transition-time of the pulse trailing-
edge. Note that the leading and trailing edges of the pulse have to fit
within the defined pulse-width.
Selectable transition time is only available with Agilent 81131A.
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Command
Long
:PULS:TRIG[1]:MODE
[:SOURce]:PULSe:TRIGger[1]:MODE
Set & Query
Form
Parameter
*RST value
Description
CONTinuous | STARt
STARt
Use this command to set/read the TRIGGER OUT generation mode in
pattern mode.
Command
Long
:PULS:TRIG[1]:POS
[:SOURce]:PULSe:TRIGger[1]:POSition
Form
Set & Query
Parameter
*RST value
Description
1 | 2 | 3 | 4
1
Use this command to set/read the TRIGGER OUT position in pattern
mode. The specified value selects a segment number for the
Agilent 81130A.
Command
Long
:PULS:TRIG[1]:VOLT
[:SOURce]:PULSe:TRIGger[1]:VOLTage[:LEVel][:IMMediate]
Form
Set & Query
Parameter
*RST value
TTL | PECL | SYM | ECLGND | ECLN2V
TTL
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Programming Reference
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Description
Use this command to set/read the output levels at the TRIGGER OUT
connector.
Termination
Voltage
Termination
Resistor
Value
High Level
Low Level
Ω
TTL
2,5V
4,2V
0V
0V
3,0V
0V
50
Ω
PECL
3,3V
50
Ω
SYM
0,5V
–0.5V
–1,7V
–1,7V
50
Ω
ECLGND
ECLN2V
–0,8V
–0,8V
0V
50
Ω
–2,0V
50
Command
Long
:PULS:WIDT[1|2]
[:SOURce]:PULSe:WIDTh[1|2]
Set & Query
Form
Parameter
Numeric
Parameter suffix S with engineering prefixes
*RST value
100 ns
Specified Limits Agilent 81131A: 1.25 ns to 999.9 µs
Agilent 81132A: 0.75 ns to 999.9 µs
Description
Example
Use this command to program the width of the pulse signal. If you want
to set width as dutycycle use [:SOURce]:PULSe:DCYCle[1|2].
If you want the pulse-width to remain constant when the pulse period is
varied (rather than the dutycycle) use [:SOURce]:PULSe:HOLD[1|2]
WIDTh.
:PULS:WIDT1 50NS
:PULS:HOLD1 WIDTH
Set OUTPUT 1 pulse width to 50 ns
Hold pulse-width constant with varying period
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Programming Reference
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Command
Long
:ROSC:SOUR
[:SOURce]:ROSCillator:SOURce
Set & Query
Form
Parameter
*RST value
Description
INTernal | EXTernal
INT
Use this command to set/read the reference source for the PLL. If you
select the external reference (CLK IN connector) you can choose to use a
1 MHz, 2 MHz, 5 MHz or 10 MHz reference signal using
:ROSC:EXT:FREQ.
INTernal
EXTernal
Lock the PLL to its internal reference
Lock the PLL to a reference signal at the CLK IN connector. The exter-
nal reference signal can be 1, 2, 5 or 10 MHz.
:ROSC:SOUR EXT
:ROSC:EXT:FREQ 10 MHZ
Set external PLL reference (CLK IN)
Example
Set expected PLL reference frequency
to 10 MHz
Command
Long
:ROSC:EXT:FREQ
[:SOURce]:ROSCillator:EXTernal:FREQuency
Form
Set & Query
Numeric
5 MHz
Parameter
*RST value
Specified limits 1 MHz, 2 MHz , 5 MHz or 10 MHz
Description
Use this command to set/read the expected reference frequency for the
PLL at the CLK IN connector. The external reference can be a 1, 2, 5 or 10
MHz signal. Note that if you program any value other than the specified
values, the value will be set to the nearest of the specified values.
:ROSC:SOUR EXT
:ROSC:EXT:FREQ 10MHZ
Set external PLL reference (CLK IN)
Example
Set expected PLL reference frequency to 10 MHz
76
Programming Reference
SCPI Instrument Command List
Command
Long
:VOLT[1|2]
[:SOURce]:VOLTage[1|2][:LEVel][:IMMediate][:AMPLitude]
Form
Set & Query
Numeric
Parameter
Parameter suffix Vwith engineering prefixes.
*RST value
1.00 V
Specified Limits Agilent 81131A: 0.10 Vpp to 3.80 Vpp
Agilent 81132A: 0.10 Vpp to 2.50 Vpp
Value coupling
Amplitude
High = Offset +
2
Amplitude
Low = Offset –
2
Range coupling Offset
Description
This command programs the amplitude voltage of the OUTPUT signal.
Note that to set the OUTPUT levels in terms of voltage, you first have to
execute the [:SOURce]:HOLD VOLTagecommand to enable the
[:SOURce]:VOLTage subsystem.
The available voltage range is limited by the specified current limits.
:HOLD VOLT
:VOLT1 2V
Enable VOLTAGE subsystem
Set OUTPUT 1 amplitude to 2 V
Example
Command
Long
:VOLT[1|2]:OFFSet
[:SOURce]:VOLTage[1|2][:LEVel][:IMMediate]:OFFSet
Form
Set & Query
Numeric
Parameter
Parameter suffix V with engineering prefixes.
*RST value
0.0 mV
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Programming Reference
SCPI Instrument Command List
Specified Limits Agilent 81131A: –1.95 V to 3.75 V
Agilent 81132A: –1.95 V to 2.95 V
Value coupling
Amplitude
High = Offset +
2
Amplitude
Low = Offset –
2
Range coupling Amplitude
Description
This command programs the offset voltage of the OUTPUT signal. Note
that to set the OUTPUT levels in terms of voltage, you first have to
execute the [:SOURce]:HOLD VOLTagecommand to enable the
[:SOURce]:VOLtage subsystem.
The available voltage range is limited by the specified current limits.
:HOLD VOLT
:VOLT1:OFF -800MV
Enable VOLTAGE subsystem
Example
Set OUTPUT 1 offset to –800mV
Command
Long
:VOLT[1|2]:HIGH
[:SOURce]:VOLTage[1|2][:LEVel][:IMMediate]:HIGH
Form
Set & Query
Numeric
Parameter
Parameter suffix Vwith engineering prefixes.
*RST value
500 mV
Specified Limits Agilent 81131A: –1.90 V to 3.80 V
Agilent 81132A: –1.90 V to 2.50 V
Value coupling
Amplitude = High – Low
High – Low
Offset =
2
78
Programming Reference
SCPI Instrument Command List
Range coupling Low-level
Description
This command programs the High-level voltage of the OUTPUT signal.
Note that to set the OUTPUT levels in terms of voltage, you first have to
execute the [:SOURce]:HOLD VOLTagecommand to enable the
[:SOURce]:VOLTage subsystem.
The available voltage range is limited by the specified current limits.
:HOLD VOLT
:VOLT1:HIGH 2V
Enable VOLTAGE subsystem
Example
Set OUTPUT 1 high level voltage to 2 V
Command
Long
:VOLT[1|2]:LOW
[:SOURce]:VOLTage[1|2][:LEVel][:IMMediate]:LOW
Form
Set & Query
Numeric
Parameter
Parameter suffix V with engineering prefixes.
*RST value
–500 mV
Specified Limits Agilent 81131A: –2.00 V to 3.70 V
Agilent 81132A: –2.00 V to 2.90 V
Value coupling
Amplitude = High – Low
High – Low
Offset =
2
Range coupling High-level
Description
This command programs the Low-level voltage of the OUTPUT signal.
Note that to set the OUTPUT levels in terms of voltage, you first have to
execute the [:SOURce]:HOLD VOLTagecommand to enable the
[:SOURce]:VOLTage subsystem.
The available voltage range is limited by the specified current limits.
:HOLD VOLT
:VOLT1:LOW 500MV
Enable VOLTAGE subsystem
Example
Set OUTPUT 1 low-level to 500mV
79
Programming Reference
SCPI Instrument Command List
Command
Long
:VOLT[1|2]:LIM
[:SOURce]:VOLTage[1|2]:LIMit[:HIGH]
Form
Set & Query
Numeric
Parameter
Parameter suffix Vwith engineering prefixes.
*RST value
Description
+500 mV
Use this command to set/read the High-level voltage limit. If you switch
on voltage limiting, the High-level voltage cannot be set above the
programmed limit. Note that the voltage is NOT limited by the OUTPUT
hardware, this is a software limit.
:HOLD VOLT
:VOLT1:LIM 2V
:VOLT1:LIM:STAT ON
Enable VOLTAGE subsystem
Set OUTPUT 1 High-level limit to 2 V
Switch on OUTPUT 1 limits
Example
Command
Long
:VOLT[1|2]:LIM:LOW
[:SOURce]:VOLTage[1|2]:LIMit:LOW
Form
Set & Query
Numeric
Parameter
Parameter suffix Vwith engineering prefixes.
*RST value
Description
–500 mV
Use this command to set/read the Low-level voltage limit. If you switch
on voltage limiting, the Low-level voltage cannot be set below the
programmed limit. Note that the voltage is NOT limited by the OUTPUT
hardware, this is a software limit.
:HOLD VOLT
:VOLT1:LIM:LOW 0V
:VOLT1:LIM:STAT ON
Enable VOLTAGE subsystem
Set OUTPUT 1 Low-level voltage
Switch on OUTPUT 1 limits
Example
80
Programming Reference
SCPI Instrument Command List
Command
Long
:VOLT[1|2]:LIM:STAT
[:SOURce]:VOLTage[1|2]:LIMit:STATe
Set & Query
Form
Parameter
*RST value
Description
ON | OFF | 1 | 0
OFF
This command switches the output limits on or off. When you switch on
the output limits cannot program the output-levels beyond the
programmed limits, until you switch off the voltage-limits. The limits
apply whether you program High/Low levels or Amplitude/Offset levels.
NOTE
You can switch the limits on and off in both the [:SOURce]:CURRent
and the [:SOURce]:VOLTagesubsystems but the current and voltage
limits are not enabled/ disabled independently. The voltage and current
limits are always enabled/disabled together.
:HOLD VOLT
:VOLT1:LIM 2V
:VOLT1:LIM:LOW 0V
:VOLT1:LIM:STAT ON
Enable VOLTAGE subsystem
Example
V
Set OUTPUT 1 High level voltage limit to 2
Set OUTPUT 1 Low-level voltage limit to 0
Switch on OUTPUT 1 limits
Command
:STATus:OPERation
This command tree accesses the OPERationstatus group. The
OPERationstatus group is not used by the instrument therefore this
command tree is redundant.
:STATus:OPERation[:EVENt]?
:STATus:OPERation:CONDition?
:STATus:OPERation:ENABle
:STATus:OPERation:NTRansition
:STATus:OPERation:PTRansition
81
Programming Reference
SCPI Instrument Command List
Command
Long
:STATus:PRESet
:STATus:PRESet
Form
Event
*RST value
Description
Not Applicable
This command
• Clears all status group event-registers
• Clears the error queue
• Presets the status group enable-, PTR-, and NTR-registers as follows:
Status Group
Register
Preset value
0000000000000000
0111111111111111
0000000000000000
0000000000000000
0111111111111111
0000000000000000
OPERation
ENABle
PTR
NTR
QUEStionable
ENABle
PTR
NTR
Command
:STATus:QUEStionable
This command tree accesses the QUEStionable status group. The
QUEStionable status group contains warning bits for voltage, current,
time and frequency parameters. A warning occurs when the output signal
could be out of specification due to the combined specification
uncertainties of many parameters, although all parameters are set within
their individually specified limits. If a parameter is set outside its
specified limits an error is generated.
The following commands are used to access the registers within the
status group:
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Programming Reference
SCPI Instrument Command List
1. :STATus:QUEStionable[:EVENt]?
Form
Query
*RST value
Description
Not Applicable
This command reads the event register in the QUEStionable status
group.
2. :STATus:QUEStionable:CONDition?
Form
Query
*RST value
Description
Not Applicable
This command reads the condition register in the QUEStionable
status group.
3. :STATus:QUEStionable:ENABle
Form
Set & Query
Numeric
Parameter
*RST value
Specified
limits
Not affected by *RST
0 – 32767
Description
This command sets or queries the enable register in the
QUEStionable status group.
4. :STATus:QUEStionable:NTRansition
Form
Set & Query
Numeric
Parameter
*RST value
Specified
limits
Not applicable
0 – 32767
Description
This command sets or queries the negative transition register in
the QUEStionable status group.
5. :STATus:QUEStionable:PTRansition
Form
Set & Query
Numeric
Parameter
*RST value
Specified
limits
Not applicable
0 – 32767
Description
This command sets or queries the positive transition register in the
QUEStionable status group.
83
Programming Reference
SCPI Instrument Command List
Command
Long
:SYST:ERR?
:SYSTem:ERRor?
Query
Form
*RST value
Description
Not Applicable
Use this command to read the instrument error queue. The instrument
error queue can store up to 30 error codes on a first-in-first-out basis.
When you read the error queue, the error number and associated
message are put into the instrument's output buffer.
If the queue is empty, the value 0 is returned, meaning No Error. If the
queue overflows at any time, the last error code is discarded and
replaced with -350meaning Queue overflow.
:SYS:ERR?
Query for errors
Example
Output example:
-222 "Data out of range" overlap at output 1: Width>Period
The above message is an example of a customized description. Generic
descriptions are available in the SCPI 1995 Command Reference, items
21.8.4 to 21.8.11.
Send ":SYST:WARN:STR?". Alternatively, the HELP key shows the
current errors and warnings and their description on the instruments
display.
Command
Long
:SYST:KEY
:SYSTem:KEY
Set & Query
Numeric
Form
Parameter
Parameter suffix No suffix allowed
*RST value
Not Applicable
84
Programming Reference
SCPI Instrument Command List
Specified limits
No.
Key Description
255
0
No key pressed (Query only)
DATA ENTRY 0
DATA ENTRY 1
DATA ENTRY 2
DATA ENTRY 3
DATA ENTRY 4
DATA ENTRY 5
DATA ENTRY 6
DATA ENTRY 7
DATA ENTRY 8
DATA ENTRY 9
DATA ENTRY .
DATA ENTRY +/–
Cursor Up
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Cursor Down
Cursor Left
Cursor Right
MAN
STORE
HELP
SHIFT
MORE
Softkey 1
Softkey 2
Softkey 3
Softkey 4
NANO
85
Programming Reference
SCPI Instrument Command List
No.
Key Description
26
27
28
29
30
/M
MICRO EGA
/
MILLI KILO
ENTER
Modify Knob Left (counter-clockwise)
Modify Knob Right (clockwise)
Description
NOTE
In query form, this command reads the last key pressed. The buffer is
emptied by *RST and returns the value -1 when empty.
In set form, the command simulates pressing a key on the frontpanel.
Simulated key-press are also recorded as the last key pressed.
:SYST:KEY 19sets the instrument to LOCAL mode.
1. In remote mode only the softkeys under the display and the SHIFT
(LOCAL) key are active. Since the instrument normally switches to
remote mode when any command is received, including
:SYSTem:KEY, simulating one of the other disabled keys has no
effect.
2. If you want to simulate full frontpanel operation, you must prevent
the instrument from entering remote mode by using the REN line of
the GP-IB to maintain local mode (LOCAL 7 in BASIC).
If you do this, the :SYSTem:KEYcommand is the only command which
works. Any other commands will be buffered in the instrument blocking
any further :SYSTem:KEYcommands, until remote mode is enable.
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Programming Reference
SCPI Instrument Command List
Command
Long
:SYST:PRES
:SYSTem:PRESet
Same as *RST
Form
Command
Long
:SYST:SEC
:SYSTem:SECurity[:STATe]
Form
Set & Query
ON|OFF
OFF
Parameter
*RST value
Description
CAUTION
Do not switch on system security unless you are willing to erase the
instrument settings stored in the instrument. All instrument memories,
including the current setting, will be overwritten with the default settings
if you
• Switch off system security
• Switch the instrument off and on again
• If you accidentally switch on system security, and want to rescue the
settings stored in the instrument, store the settings on a memory card.
You can then recall them from the memory card later.
Use this command to switch on system security mode. Switch on system
security if you need to make sure that all instrument settings stored in
the instrument are erased automatically when the instrument is switched
off, or when security mode is switched off.
The instrument settings are erased by overwriting them with the default
settings.
System security mode is not available via the frontpanel. If you want to
erase all settings by hand:
1
2
SHIFT STORE 0 to RECALL the default settings from memory 0.
STORE 1, STORE 2 ,...,STORE 4 to store the defaults in memories 1 to 4.
87
Programming Reference
SCPI Instrument Command List
Command
Long
:SYST:SET
:SYSTem:SET
Set & Query
Block data
Form
Parameter
*RST value
Description
Not applicable
In query form, the command reads a block of data containing the
instrument's complete set-up. The set-up information includes all
parameter and mode settings, but does not include the contents of the
instrument setting memories, the status group registers or the
:DISPlay[:WINDow][:STATe]The data is in a binary format, not
ASCII, and cannot be edited.
In set form, the block data must be a complete instrument set-up read
using the query form of the command.
Command
Long
:SYST:VERS?
:SYSTem:VERSion?
Query
Form
*RST value
Description
"1992.0"
This command reads the SCPI revision to which the instrument
complies.
Command
Long
:SYST:WARN?
:SYSTem:WARNing[:COUNt]?
Query
Form
*RST value
Description
Not applicable
Use this command to read the number of warnings which are currently
active. Note that the warning status of voltage, current, time and
frequency are also summarized by bits in the QUESTionable Status
register.
88
Programming Reference
SCPI Instrument Command List
Command
Long
:SYST:WARN:STR?
:SYSTem:WARNing:STRing?
Query
Form
*RST value
Description
Not applicable
Use this command to read all the currently active warning messages. The
warning messages are concatenated to form a single string with a ; as
separator between the messages.
Command
Long
:SYST:WARN:BUFF?
:SYSTem:WARNing:BUFFer?
Query
Form
*RST value
Description
Not applicable
Use this command to read the maximum possible number of characters
which could be returned by :SYST:WARN:STR?if all warnings were
active.
Command
Long
:TRIG:COUN
:TRIGger[:SEQuence[1] | :STARt]:COUNt
Form
Set & Query
Numeric
1
Parameter
*RST value
Specified limits 1 to 65504
89
Programming Reference
SCPI Instrument Command List
Description
Use this command to set/read the number of trigger events (pulse
periods) to be generated for each arming event in pulse and burst mode
(in pattern mode the number of trigger events depends on the used
sequence). This corresponds to selecting the event mode on the MODE/
TRG screen:
Set a trigger count of 1 so that a single pulse period is
generated for each arming event.
PULSES
Set a trigger count of 2 to 65504 so that a burst of 2 to 65504
pulse periods is generated for each arming event. Switch off
pattern mode so that a pulse is generated in each pulse
period. (:DIG:PATT OFF)
BURST of
NOTE
For a started burst this command will reduce the number of pulses on
channel 1 and channel 2 (:TRIGger:COUNt:PULSes[1|2]) to the value
set by :TRIGger:COUNt. Changes of the number of pulses on the
channels will increase the value to of :TRIGger:COUNtto reflect the
changes on the channels.
Examples
To set STARTED BURST of 16 pulse periods and 6 Pulses at
Out1, the burst are started by a positive level at the EXT INPUT:
:ARM:SOUR EXT1
:ARM:MODE STAR
:ARM:SENS POS
:TRIG:COUN 16
:TRIG:COUN:PULS1 6
:TRIG:SOUR INT1
:DIG:PATT OFF
Set arming from EXT INPUT
Set started mode
Set arming on positive level
Burst length 16
Number of pulses at OUTPUT 1
Pulse period trigger from internal PLL.
Disable pattern operating mode
To set GATED PULSES Pulses at Out1, gated by a positive level at the
EXT INPUT:
:ARM:SOUR EXT1
:ARM:MODE GAT
:ARM:SENS POS
:TRIG:COUN 1
Set arming from EXT INPUT
Set arming on levels
Set arming on positive level 1 pulse period
Single pulse output mode
:TRIG:SOUR INT1
:DIG:PATT OFF
Pulse period trigger from internal PLL.
Disable pattern data
90
Programming Reference
SCPI Instrument Command List
Influence of :TRIGger:COUNtand :TRIGger:COUNt:PULSes[1|2]in
started burst mode:
:ARM:SOUR IMM
TRIG:COUN 1
Set continuous mode
Set Pulse mode
:ARM:MODE STAR
:TRIG:COUN:PULS1 20
:TRIG:COUN 5
Prepare started mode
Set number of pulses on channel 1 to 20
Set Burst mode with a length of 5 clocks,
the number of pulses on both channels
will be reduced to 5 if necessary.
Request number of pulses on channel 1
:TRIG:COUN:PULS1? ⇒ 5
:TRIG:COUN? ⇒ 5
Request number of clock within the
started burst
:TRIG:COUN:PULS1 10
Set number of pulses on channel 1 to 10
Request number of clocks within the
started burst
:TRIG:COUN? ⇒ 10
:TRIG:COUN 20
Set number of clocks within the started
burst to 20
Request the number of clocks with in
the started burst. The return value is 10,
because none of the channels will gener-
ate more than 10 pulses.
:TRIG:COUN? ⇒ 10
:TRIG:COUN 8
Set the number of clocks within the
started burst to 8.
Request the number of pulses on chan-
nel 1. The return value is 8, because the
number of clocks has been decreased to
a value less than the currently used
number of pulses on channel 1.
:TRIG:COUN:PULS1? ⇒ 8
:TRIG:COUN 1
Set Pulse mode
Request the number of pulses on chan-
nel 1. The value stays unchanged, since
the instrument is no longer in started
burst mode.
:TRIG:COUN:PULS1? ⇒ 8
91
Programming Reference
SCPI Instrument Command List
Command
Long
:TRIG:COUN:PULS[1|2]
:TRIGger[:SEQuence[1] | :STARt]:COUNt:PULSes[1|2]
Form
Set & Query
Numeric
2
Parameter
*RST value
Specified limits 2 to 65504
Description
Use this command to set/read the number of pulses within a burst at
OUTPUT 1 or OUTPUT 2.
Examples
To set STARTED BURST of 16 pulse periods and 6 Pulses at
Out1, the burst is started by a positive level at the EXT INPUT:
:ARM:SOUR EXT1
:ARM:MODE STAR
:ARM:SENS POS
:TRIG:COUN 16
:TRIG:COUN:PULS1 6
:TRIG:SOUR INT1
:DIG:PATT OFF
Set arming from EXT INPUT
Set started mode
Set arming on positive level
Burst length 16
Set 6 pulses at OUTPUT 1
Pulse period trigger from internal PLL.
Disable pattern operating mode
Command
Long
:TRIG:LEV:TERM
:TRIGger[:SEQuence[1] | :STARt]:LEVel:TERMination
Form
Set & Query
Numeric
Parameter
Parameter Suffix Vwith engineering prefixes.
*RST value
0.0 V
Specified Limits –2.1V to +3.3V
Description
Use this command to program the termination voltage compensation of
the CLK IN connector.
:TRIG:LEV:TERM 2.5V
Set CLK IN termination voltage to 2.5 V
Example
92
Programming Reference
SCPI Instrument Command List
Command
Long
:TRIG:SOUR
:TRIGger[:SEQuence[1] | :STARt]:SOURce
Form
Set & Query
Parameter
*RST value
Description
IMMediate | INTernal[1] | EXTernal2
INT
Use this command to select the pulse period source of the
Agilent 81130A by selecting the source of the pulse period trigger signal:
Pulse period sources set by :TRIG:SOUR
Pulse period source
:TRIG:SOURce
IMMediate | INTernal[1]
EXTernal2
internal PLL
CLK IN
93
Programming Reference
SCPI Instrument Command List
94
3Specifications
3
In this chapter you will find the specifications of the Agilent 81130A
Pulse Generator and its output modules Agilent 81131A and Agilent
81132A.
At the end of this chapter, “Pulse Parameter Definitions” on page 111
provides detailed information on the definition of the pulse parameters
used by the instrument.
NOTE
Warranted Performance
Specifications describe the instrument’s warranted performance. Non-
warranted values are described as typical. All specifications apply after a
30 minute warm-up phase with 50 Ohm source, a 50 Ohm load resistance
and separate channels. They are valid from 0 °C to 55 °C ambient
temperature.
95
Specifications
Declaration of Conformity
Declaration of Conformity
Manufacturer
Agilent Technologies
Boeblingen Verification Solutions
Herrenberger Str.130
D-71034 Boeblingen/Germany
We declare that the system:
Agilent 81100
Family of Pulse-/Data Generators
Agilent 81110 A
Agilent 81104 A
Agilent 81101 A
Agilent 81112 A
Agilent 81130 A *
Agilent 81131 A *
Agilent 81132 A *
330/165 MHz Pulse/Pattern Generator
80 MHz Pulse Pattern Generator
50 MHz Pulse Pattern Generator
330 MHz , 3.5V Output Module
400/660 MHz Puls-/Pattern Generator
400 MHz , 3.5V Output Module
660 MHz , 2.5V Output Module
Agilent E 8305 A *
Agilent E 8306 A *
VXI Plugin 250 MHz Pulse Generator
VXI Plugin 100 MHz Clock Generator
conforms to the following standards:
Safety
EMC
IEC 1010-1:1990 +A1:1992 +A2:1995 EN61010-1:1993
EN 55011:1991 / CISPR 11 Group 1, Class B
*
EN 55011:1991 / CISPR 11 Group 1, Class A
EN 61000-4-2:1995
EN 61000-4-3:1995
ENV 50204: 1995
EN 61000-4-4:1995
EN 61000-4-5:1995
EN 61000-4-6:1995
EN 61000-4-8:1993
IEC1000-4-11:1994
ESD: 4kVcd; 8 kVad;4kV c.p.
Radiated Immunity: 3V/m 80%AM
Radiated Immunity: 3V/m; 50%Dty
Fast Transients/Bursts: 0.5kV, 1kV
Surges: 1kVdiff; 2kV com.mode
Conducted Immunity
Power freq. magn. field 3A/m; 50Hz
Voltage Dips and Interruptions
Supplementary
Information
The product herewith complies with the requirements of the
•
•
Low Voltage Directive (73/23/EEC) and the
EMC Directive (89/336/EEC).
During the measurements against EN55011, the I/O ports were terminated with their
nominal impedance, the GP-IB connection was terminated with the cable Agilent 10833B.
When the product is connected to other devices, the user must ensure that the connecting
cables and the other devices are adequately shielded to prevent radiation.
Boeblingen, June 09th 1998
th
Wolfgang Fenske
Update, Oct. 13 1998
Regulation Consultant
96
Specifications
Agilent 81130A Specifications
Agilent 81130A Specifications
General
Environmental Conditions
°
0 C to +55 C
°
Operating temperature:
°
–40 C to +70 C
°
Storage temperature:
Humidity:
Altitude:
°
95% r.h. up to 40 C ambient temperature
up to 2000 m
Installation:
Pollution:
EMC:
Category II
Degree 2
conforms to EN50082-1, EN55011, Class A
Battery:
Lithium, type CR2477-N
(Agilent part number 1420-0557)
Safety
IEC1010, CSA1010
Power requirements
100–240 Vac, ±10%, 50–60 Hz;
100–120 Vac, ±10%, 400 Hz
Power consumption: 300 VA max.
Maximum Dimensions (H x W x D)
89 mm x 426 mm x 521 mm
97
Specifications
Agilent 81130A Specifications
Weight
Net
8.5 kg Single Channel
9.2 kg Dual Channel
Shipping
13.8 kg Dual Channel
Recalibration period
1 year recommended
Warranty
3 years standard
Acoustic Noise Emission
For ambient temperature up to 30°C,
under normal operation and at the typical operator position:
LpA = 52 dB (5.9 bel) typical {47 dB (5.3 bel) at 23°C) typical}
Measured in accordance with ISO 7779/EN 27779.
98
Specifications
Agilent 81130A Specifications
Timing Specifications
The timing characteristics are measured at 50% amplitude at fastest
transitions in continuous mode and 50 Ω load impedance.
NOTE
The Agilent 81130A is designed and recommended for an operation in the
frequency range of 170 kHz to 400/660 MHz. However it can be operated
in the extended range down to 1 kHz. Changes in specifications below
170 kHz are set in brackets [].
Period & Frequency
Period can also be entered as frequency.
Agilent 81130A with
Agilent 81131A
Agilent 81130A with
Agilent 81132A
Period & Frequency
Period range:
2.5 ns to 1 ms
1.5 ns to 1 ms
Frequency range:
1 kHz to 400.0 MHz
1 kHz to 660.0 MHz
Period/frequency
resolution:
4 digits, 2 ps best case
a
± 100 ppm [0.01%]
0.001% + 15 ps
Period accuracy :
RMS-jitter:
(internal reference,
internal clock)
a
In burst mode the first period may be decreased by 150 ps.
Repeatability is typically four times better than accuracy.
99
Specifications
Agilent 81130A Specifications
Width
The width can be entered as absolute width, duty cycle, or trailing edge
delay.
Agilent 81130A with
Agilent 81131A
Agilent 81130A with
Agilent 81132A
Width
Width range:
Resolution:
Accuracy:
Jitter:
1.25 ns to (period – 1.25 ns)
750 ps to (period – 750 ps)
4 digits, 2 ps best case [0.05% of period]
±
±
100 ppm 200 ps [ 0.06% of period]
±
+
0.001% 15 ps
Delay
Measured between trigger output and main output. Can be entered as
absolute delay, phase ° or % of period.
Agilent 81130A with
Agilent 81131A
Agilent 81130A with
Agilent 81132A
Delay
Variable delay range:
0 to 3.00 µs: independent of period
> 3.00 µs: 0 ns to 1 period
Resolution:
Accuracy:
4 digits, 2 ps best case [0.05% of period]
±
(0.01% + 100 ps) relative to the zero-delay
[±0.035% of period]
Jitter:
0.001% + 15 ps
32 ns typ.
Fixed Delay:
100
Specifications
Agilent 81130A Specifications
Deskew
Compensation for different cable delays.
Agilent 81130A with
Agilent 81130A with
Agilent 81132A
Deskew
Agilent 81131A
±
Range:
25 ns
Resolution:
4 digits, 2 ps best case
For frequencies >170 kHz only.
Transition Times
Measured between 10% and 90% of amplitude, except for ECL levels (20%
and 80% of amplitude).
Agilent 81130A with
Agilent 81131A
Agilent 81130A with
Agilent 81132A
Transition Times
800 ps or 1600 ps
(selectable)
fixed
Range:
≤
≤
≤
600 ps for Vpp 1 V
900 ps for Vpp > 1 V
500 ps typ.
Minimum transition:
At ECL levels:
<450 ps
< 350 ps (200 ps typ.)
Digital Channel Add
In this mode, channel 1 and channel 2 are added and fed to channel 1
output. Channel 2 is still available.
101
Specifications
Agilent 81130A Specifications
Main Output Level Specifications
Level parameters can be entered as high/low level in terms of voltage or
current or offset/amplitude.
Agilent 81130A with
Agilent 81131A
Agilent 81130A with
Agilent 81132A
Level
Specifications
Ω
50 ± 1% typ.
Ω
50 ± 5% typ.
Output impedance:
Max. external voltage: –2.2 V to +5.5 V
–2.0 V to +4.0 V
Amplitude:
0.10 Vpp to 3.80 Vpp
–2.00 V to +3.80 V
0.10 Vpp to 2.50 Vpp
–2.00 V to +3.00 V
Level window:
Accuracy:
±
±
(2% + 50 mV)
(5% + 50 mV)
Limits:
high and low level can be limited to protect the DUT
3 digits (10 mV best case)
Resolution:
Short circuit current:
Baseline noise:
Connectors:
–80 mA to +152 mA
4 mV RMS typ.
–80 mA to +120 mA
8 mV RMS typ.
SMA(f) 3.5 mm
±
Overshoot/preshoot/
ringing:
(5% +50 mV) of amplitude typ.
Normal/inverted:
ON/OFF:
differential outputs
relays connect/disconnect output (HiZ)
102
Specifications
Agilent 81130A Specifications
External Input, External Clock/PLL
Reference Input
External Input
The external input EXT INPUT is used as trigger/gate input in started and
gated mode. It is sampled once per period.
External Clock/PLL Reference Input
The CLK-IN/REF input can either be used for external clock input or
Phase Locked Loop (PLL) reference.
• External Clock
–
The output period is determined by the signal at clock input.
Frequency accuracy can be increased by using a precise external
clock.
• PLL Reference
–
PLL locks either to an external frequency reference at the PLL
Reference Input or to an instrument’s internal reference.
–
PLL is a high accuracy period (frequency) source.
When locked to the internal reference, period accuracy,
resolution, and jitter are improved.
When locked to an external frequency reference, the external
frequency affects these accuracies.
103
Specifications
Agilent 81130A Specifications
Specifications of EXT INPUT/CLK-IN REF Input
External clock/PLL
Input Parameters
External Input (EXT IN)
reference (CLK-IN/REF)
Connectors:
SMA(f) 3.5 mm
Termination voltage:
–2.10 V to +3.30 V
50 mV
Termination voltage
resolution:
Input Transitions:
< 20 ns
Maximum input
voltage:
–3 V to +6 V
Threshold:
–1.4 V to +3.7 V
ac coupled
Threshold resolution: 50 mV
not applicable
Ω
50 typ. / dc
Ω
50 typ. / ac
Input impedance/
coupling:
Input frequency:
0 to 330 MHz
External Clock:
170 kHz to 660 MHz
PLL Reference:
1, 2, 5, 10 MHz
±
50% 10% duty cycle
Duty cycle:
DC-coupled
a
a
Typical delay to
trigger out:
21 ns
22 ns + 0 ... 1 period
Typical delay to
output:
53 ns
54 ns + 0 ... 1 period
Sensitivity:
< 400 mVpp
a
The uncertainty of 1 period can be eliminated if an external clock is used and the
following setup and hold times are observed:
setup time: 0.3 ns to 4.3 ns, hold time: –2.8 ns to 4.0 ns.
104
Specifications
Agilent 81130A Specifications
Trigger Modes
Continuous
Generate continuous pulses, bursts, or patterns.
Externally Started
Each active input transition (rising or falling) generates pulses, a burst,
or a pattern.
The trigger source can be selected from:
• External Input
• MAN key
Externally Gated
The active input level (high or low) enables pulses, bursts, or patterns.
The output is stopped immediately on an external gate signal, therefore
the last cycle may be incomplete.
The gate source can be selected from:
• External Input
• MAN key
105
Specifications
Agilent 81130A Specifications
Specification of Trigger Output
This output provides one pulse per period with 50% duty cycle typically.
In pattern mode, the trigger pulse can be set to mark the start of any
segment.
Trigger Output Specification
Agilent 81130A
Ω
Level (into 50 ):
selectable:
TTL into GND
PECL into +3 V
ECL into –2 V
ECL into GND
Ω
50 typ.
Output impedance:
Trigger pulse width:
50% of period typ.
–2 V to +3 V
600 ps typ.
Maximum external voltage:
Transition times:
Delay from trigger to output:
32 ns typ.
Output Modes
The output mode determines whether the output signal consists of
• pulses
• bursts of pulses
• patterns of pulses
The output signal is controlled by the Trigger mode.
106
Specifications
Agilent 81130A Specifications
Burst Mode
Burst
Agilent 81130A
Burst count:
2 to 65504
a
2 to 65504 clocks
Burst period :
a
Minimum number of clocks is twice the segment length resolution (see table “Patterns
and Sequences”).
Patterns and Sequences
Patterns/Sequences Specifications
Agilent 81130A
Number of segments:
Number of infinite loops:
Number of counted loops:
Loop count:
4
1
1
20
1 to 2
Memory depth per channel:
Segment length:
65504 (– PRBS repetition length)
1 to 65504
(Frequency dependent resolution, see ta-
ble below)
Data types:
Data (editable)
High
Low
n
PRBS (2 -1 with n = 7, 8, ... 15)
Data formats:
RZ, R1, NRZ
107
Specifications
Agilent 81130A Specifications
The following rules apply for pattern sequences:
• The resolution of the segment length value depends on the frequency:
Resolution
Frequency in MHz Period in ns
16
8
333.4 ... 666.7
166.7 ... 333.3
83.4 ... 166.6
41.7 ... 83.3
1.500 ... 2.999
3.000 ... 5.999
4
6.000 ... 11.99
2
12.00 ... 23.99
1
min. freq. ... 41.6
24.00 ... max. period
• If the counted loop is used, the minimum length of the first segment is
twice the resolution.
• An infinite loop over a single segment requires a minimum segment
length of twice the resolution.
• Within a segment, PRBS is allowed to be combined with data type
PRBS, High or Low only.
• PRBS must be combined with always the same data type in all
segments.
Human Interface
Overprogramming
Parameter values can be entered exceeding the specified range.
Warnings and Errors
Warning messages indicate potentially conflicting parameters due to
accuracy tolerances.
Error messages indicate conflicting parameters.
108
Specifications
Agilent 81130A Specifications
Help Key
Displays a context-sensitive message about the selected parameter.
Concept help for getting started is also available. If warnings or errors
occur, the HELP key displays the warning/error list accordingly.
Memory
Non-Volatile Memory
Actual setting is saved on power down. 4 user settings and 1 default
setting are also stored in instrument.
Memory Card
99 settings can be stored per 1 MB (MS-DOS, PCMCIA) memory card.
Also used for convenient firmware updates.
Remote Control
Operates according to IEEE standard 488.2, 1987 and SCPI 1992.0.
Function Code
SH1, AH1, T6, L4, SR1, RL1, PP0, DC1, DT1,C0.
109
Specifications
Agilent 81130A Specifications
Programming Times
(all checks and display off)
Command
Typical execution time
Width, delay, transition times:
40 ms to 70 ms
a
100 ms to 260 ms
Period within one range :
a
Period between different ranges ...
... in pulse/burst mode: 140 ms to 300 ms
... in pattern mode: 100 ms to 5.05 s
Levels:
43 ms
Trigger modes:
Input parameters:
Save setting:
Recall setting ...
< 75 ms
28 ms
200 ms
... in pulse/burst mode: 515 ms to 800 ms
b
... in pattern mode with data and PRBS
:
1.15 s to 5.5 s
Complete pattern memory transfer:
b
1.25 ms
Pattern and Sequencing
:
190 ms to 5.1 s
a
Range depends on segment length resolution.
Depends on PRBS polynom setting.
b
110
Specifications
Pulse Parameter Definitions
Pulse Parameter Definitions
Here you find the pulse parameter definitions of terms used in the
instrument specifications. In the following figure a graphical overview of
the pulse parameters is provided:
Pulse Period
External
Trigger
Signal
Trigger
Delay
Trigger
Output
Pulse
Width
Transition
Times
Pulse Delay
Output
Delay A
Channel A
Output
Interchannel
Delay Skew
Channel B
Output
Delay B
111
Specifications
Pulse Parameter Definitions
Time Reference Point
The time reference point is at the median of the amplitude (50%
amplitude point on pulse edge):
100%
Median
50%
0%
Pulse Period
The time interval between the leading edge medians of consecutive
output pulses:
50%
Pulse Period
Trigger Delay
Interval between trigger point of the external trigger input signal and the
trigger output pulse’s leading edge median.
Pulse Width
Interval between leading and trailing edge medians:
50%
Specified
Width
The specified and displayed value is that obtained with fastest edges,
essentially equal to the interval from the start of the leading edge to the
start of the trailing edge. By designing so that the pulse edges turn about
their start points, the interval from leading edge start stays unchanged (in
112
Specifications
Pulse Parameter Definitions
practice, start points may shift with changes in transition time) when
transition times are varied. This is more convenient for programming and
the width display is easy to interpret.
Pulse Delay
Interval between leading edge medians of trigger output pulse and output
pulse:
Trigger
Output
Output
Signal
Fixed Delay
Variable Delay
The specified and displayed value is that obtained with the fastest
leading edge. Pulse delay has two components, a fixed delay from trigger
output to output signal and a variable delay with respect to the trigger
output.
Interchannel Delay (Skew)
Interval between corresponding leading edge medians of the output
signals.
113
Specifications
Pulse Parameter Definitions
Transition Time
Interval between the 10% and 90% amplitude points on the leading/
trailing edge:
100%
90% Amplitude
Transition
Time
10% Amplitude
0%
Linearity
Peak deviation of an edge from a straight line through the 10% and 90%
amplitude points, expressed as percentage of pulse amplitude:
100% Amplitude
90% Amplitude
Deviation
10% Amplitude
0% Amplitude
114
Specifications
Pulse Parameter Definitions
Jitter
Short-term instability of one edge relative to a reference edge. Usually
specified as rms value, which is one standard deviation or “sigma”. If
distribution is assumed Gaussian, six sigma represents 99.74% of the
peak-peak jitter.
The reference edge for period jitter is the previous leading edge. That for
delay jitter is the leading edge of the trigger output. Width jitter is the
stability of the trailing edge with regard to the leading edge.
Stability
Long-term average instability over a specific time, for example, hour,
year. Jitter is excluded.
Pulse Levels
Pulse output is specified as pulse top and pulse base (usually referred to
as high level and low level), or as peak to peak amplitude and median
offset. A “window” specification shows the limits within which the pulse
can be positioned.
High Level
Median
Max
High
Amplitude
Level
Window
Offset
Low Level
Min
Low
Level
Zero Volts
115
Specifications
Pulse Parameter Definitions
Preshoot, Overshoot, Ringing
Preshoot and overshoot are peak distortions preceding/following an
edge. Ringing is the positive-peak and negative-peak distortion,
excluding overshoot, on pulse top or base. For example, a combined
preshoot, overshoot, and ringing specification of 5% implies:
• Overshoot/undershoot < 5%
• Largest pulse-top oscillation
<+ 5%, of pulse amplitude.
Overshoot
e.g. 5%
Ringing (POSITIVE)
e.g. +3%
100
Amplitude
%
(NEGATIVE)
Ringing
e.g. –2%
0% Amplitude
Preshoot
e.g. 2%
Settling Time
Time taken for pulse levels to settle within level specifications, measured
from 90% point on leading edge.
Amplitude
Accuracy
Band
90%
Amplitude
Settling Time
116
Specifications
Pulse Parameter Definitions
Repeatability
When an instrument operates under the same environmental conditions
and with the same settings, the value of a parameter will lie within a band
inside the accuracy window. Repeatability defines the width of this band.
Accuracy Window
Repeatability Band
117
Specifications
Pulse Parameter Definitions
118
Index
A
Acoustic Noise Emission 98
transition time 114
trigger delay 112
Delay 69, 70
Added at Output 1 45
Amplitude
definition 115
specification 100
Delay% 68, 69, 70
Deskew
Amplitude current 60
Amplitude voltage 77
specification 101
Dimensions 97
B
BURST
ON/OFF 55
length 89, 92
mode 89, 92
number of pulses 92
period 89, 92
Duty Cycle 67
Enable Register 21
Burst Mode
specification 107
Error Queue 84
C
Certification
Errors 108
Event Register 20
EXT INPUT
Channel addition 45
Threshold 43
Clear Error Queue 82
Clear Status 82
External Clock 103
External Input 103
CLK-IN Termination 92
Common Commands 18
CONTINUOUS mode 44, 46, 47
Counted Loop 45, 47, 48, 108
Current Limits 64
specification 99
Functional Coupling 42
D
DATA 53
Declaration
of Conformity 96
Default Units 70
Definition
interchannel delay 113
jitter 115
Linearity 114
Specifications 97
GP-IB
information 14
pulse delay 113
pulse levels 115
pulse parameters 111
pulse performance 116
pulse period 112
pulse width 112
repeatability 117
settling time 116
stability 115
H
HELP Key 109
HIGH 53
High-level
current 62
current limit 63
definition 115
voltage 78
time reference point 112
voltage limit 80
119
Index
Human Interface 108
Non-Volatile Memory 109
NRZ/RZ 54
I
Infinite Loop 46, 47, 108
Instrument Setting 88
Interchannel Delay
definition 113
current 61
definition 115
voltage 77
J
Jitter
definition 115
Operation Status 23
Output modes
specification 106
OUTPUT ON/OFF 59
Overprogramming 108
Overshoot
K
Key-code Reference 86
L
Last Key Pressed 84
definition 116
Leading Edge 72
definition 114
Level
P
PATTERN
Data 49
specification 102
Linearity
definition 114
Load
file into memory 58
Loop Length 48
Loop Start 47
LOW 53
LENGTH 52
LOOP 45, 46, 47, 48
mode 48
PRBS 48
Update 54
Pattern
Clock/n 53
Patterns
specification 107
Period
Low-level
current 63
specification 99
current limit 64
definition 115
voltage 79
PLL Reference 76
frequency 76
voltage limit 80
M
Main Output Level Specification 102
Power requirements 97
PRBS 53, 108
Preshoot
Measure CLK-IN
frequency 66
period 71
definition 116
Programming
BURST mode 40
CONTINUOUS mode 39
GATED mode 39
PATTERN mode 40
PULSES mode 39
STARTED mode 39
Programming Times
specification 110
Pulse Delay
Memory Card
catalog/DIR 56
change directory 56
copy file 57
delete file 57
format 58
initialize 58
load from Form 58
store to 59
definition 113
120
Index
Pulse Frequency 65
Pulse Levels
Specifications 95
burst mode 107
delay 100
definition 115
Pulse Parameter
definitions 111
Pulse Performance
definition 116
Pulse Period 70
definition 112
source 93
deskew 101
frequency 99
general 97
level 102
memory card 109
output modes 106
patterns 107
period 99
PLL 103
Pulse Width 75
definition 112
pulse width 100
remote control 109
sequences 107
timing 99
Q
Questionable Status 24
Group 82
timing (PLL) 103
transition times 101
trigger modes 105
width 100
R
Range Coupling 42
Reading
Error Queue 84
Keyboard 84
Recalibration period 98
Repeatability
definition 117
Reset 87
Stability
definition 115
Start instrument 45
Ringing
definition 116
RZ/NRZ 54
Status Byte 22
definition 19
questionable 82
Status Model 19
Preset 82
S
Safety 97
symbols 8
SCPI
command dictionary 42
version 88
Stop instrument 45
Store
System
Preset 87
Segment
data 49
length 49, 52, 53
type 53
Security 87
Separate Channels 45
Sequences
specification 107
Setting
load into memory 58
Settling Time
definition 116
Simulating Key-presses 84
Skew
T
Time Reference Point
definition 112
Timing
specifications 99
Trailing Edge
definition 114
delay 72
definition 113
Transition Filters 20
121
Index
Transition Times 72
definition 114
specification 101
Transition Units 72
Trigger Delay
definition 112
Trigger Modes
specification 105
TRIGGER OUT
level 74
mode 74
position 74
V
Value Coupling 42
Voltage Limits 81
W
Warnings 88, 108
Warranted Performance 95
Warranty 98
Weight 98
Width
specification 100
122
Front Panel Controls
DATA ENTRY
CURSOR/DIGIT
MODIFY
nano
MAN
7
8
9
RECALL
STORE
PERIOD
4
DELAY
WIDTH
PATTERN
micro
Mega
5
6
AUTOSET
HELP
LEAD
1
TRAIL
2
HIGH
LOW
milli
kilo
3
ON | OFF1
O
ON | OFF1
.
ON | OFF2
+/-
ON | OFF2
ENTER
SHIFT
LOCAL
CURSOR
Keys
DATA ENTRY /
QUICK ACCESS
Keys
KNOB
Special
FUNCTION
Keys
ENTER &
UNIT Keys
Copyright Agilent Technologies 1998, 2000
Edition E0300
Printed in Germany
81130-91021
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