JOBAID
61245004L6-22B
0104
HTU-C / 3192
STATUS LEDs
CIRCUIT BOARD ROTARY SWITCH - SW2
HTU-C / 3192
LP1 / LP2
G OFF
No synchronization between the HTU-C and the next
HDSL unit (HRE or HTU-R) on loop1 / loop2
Selects the DSX-1 Line Build Out
CLEI: T1L4SNSC_ _
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0..........0 - sets LBO to 0-133 feet
1..........133 - sets LBO to 133-266 feet
2..........266 - sets LBO to 266-399 feet
3..........399 - sets LBO to 399-533 feet
4..........533 - sets LBO to 533-655 feet
G RED
Poor signal quality on loop1 / loop2
Marginal signal quality loop on loop1 / loop2
Good signal quality on loop1 / loop2
Error detected at HTU-C or HTU-R
DSX-1 signal not detected
BPV, Frame Error (SF), CRC Error (ESF) is detected
DSX-1 signal is present and synchronized
No alarm condition detected
Local alarm condition detected (HTU-C), or local and
remote alarm condition detected (HTU-C and HTU-R)
Remote alarm condition detected (HTU-R)
No active loopback
G YELLOW
G GREEN
✷ FLASHING
G OFF
✷ FLASHING
G GREEN
G OFF
HTU-C
1245004L6
Note: Positions 5,6 & 7 are not used.
DSX
ALM
H
D
S
L
LP1
CIRCUIT BOARD JUMPER - P1
LP2
Selects the span powering voltage
DSX
ALM
G RED
LV (–140 Vdc)
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Used to span power circuit with 0 or 1 HRE
G YELLOW
G OFF
HV (–190 Vdc)
Used to span power circuit with multiple HREs
LBK
LBK
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✷ FLASHING
G YELLOW
Armed but not in loopback
Local loopback is active
C
AIS
LBK
CDI
L
O
S
CIRCUIT BOARD JUMPER - P3
FACEPLATE SWITCH - SW1
Selects the framing of the HDSL circuit
LBK
TM OUT
Selects response of HTU-R upon Customer Loss of Signal
UNF
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HTU-C operates in unframed mode
AIS
DIS
EN
AUTO
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HTU-R generates unframed all 1s toward network upon loss of customer signal
BZS
T1
AMI
FT1
EN
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HTU-C auto detects framing
LBK
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HTU-R generates loopback towards network upon loss of customer signal
DIS
DSX EQ BANTAM JACKS
CDI
EXT ALM
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HTU-R generates framed all 1s toward network upon loss of customer signal
Provides an intrusive test access point to the data stream
FACEPLATE SWITCH - SW3
COMPLIANCE CODES
TX
TX
RX
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Accesses the data stream being received from the local loop
Loopback Timeout
Enabled
This product complies with UL 1459, third
edition. It is intended to be installed in an
enclosure with an Installation Code (IC) of
“B” or “E” and in Restricted Access Locations
only. Input current at maximum load is 1 A,
and maximum output at overcurrent condi-
tion is 160 mA at -188 Vdc.
RX
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Accesses the data stream being transmitted to the local loop
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Loopback timeout is enabled
Disabled
RS-232 DB-9 CONNECTOR
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Loopback timeout is disabled
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Used to access performance monitoring data, perform loopbacks and provision units
via VT100 emulation software such as Hyper Terminal – Private Edition and
ProComm Plus.
Manual Line Code Select
AMI
R
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AMI line code is selected
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Provision terminal port as follows:
S
2
3
2
Code
Input Output
B8ZS
Data Rate — 19.2 kbps
Asynchronous Data Format — eight data bits, no parity (none), one stop bit
Installation Code (IC)
Telecommunication Code (TC)
Power Code (PC)
A
–
F
–
X
C
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B8ZS line code is selected
Latching Loopback
T1
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When using a PC with terminal software, be sure to disable any power saving
programs.
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Allows only standard T1 testing
FT1
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Allows for fractional T1 testing
WARRANTY
External Alarm
Enabled
Warranty for Carrier Networks products manufactured by ADTRAN and supplied
under Buyer’s order for use in the U.S. is ten (10) years. For a complete copy of
ADTRAN’s U.S. Carrier Networks Equipment Warranty:
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External alarm is enabled
Disabled
External alarm is disabled
C A U T I O N !
(877) 457-5007, Document #414.
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
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HANDLING PRECAUTIONS REQUIRED.
For complete Installation and Maintenance: (877) 457-5007, Document #300. Please have your fax number available.
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