JOB
A
ID
R
S
2
3
2
STATUS
MODE
SELECT
HTU-C
1246003L8
DDM+
HTU-CM
CLEI:T1L3BWBA_ _
LED STATUS
STATUS
●
GREEN
Synchronization
✷
FLASHING ES, SES or BPV detected
●
YELLOW
Loopbacks active
✷
FLASHING In-band loopbacks armed
●
RED
Alarm on any HTU-C loops, HRE loops, DSX or DS1 interface
✷
FLASHING Signal Quality of 0 or No Sync on at least one loop
4 CHARACTER DISPLAY (FCD) OPERATION
UP = MODE
CENTER = OFF
DOWN = SELECT
FCD Modes
Mode
Display
Function
Status
STAT
HDSL loop margin, displays 1=xx or 2=xx, where xx=loop margin
0-2 marginal signal quality, 3-20 acceptable signal quality
Display Off
Blank
Result after five minutes of no activity
View
VIEW
View current parameters without changing
Provisioning
PROV
Set configuration options
Default
DFLT
Sets all factory defaults
Loopback
LPBK
Select and execute HDSL circuit loopbacks
Status/Alarm Display (“STAT”)
Message Condition
HER1
CRC error detected on HDSL Loop 1
HER2
CRC error detected on HDSL Loop 2
LERR
Frame bit error (SF Mode) or CRC error (ESF Mode) detected locally at DSX-1 of the HTU-C
RERR
Frame bit error (SF Mode) or CRC error (ESF Mode) detected locally at DS-1 of the HTU-C
LBPV
Bipolar Violation (BPV) detected locally at DSX-1 of the HTU-C
RBPV
BPV detected locally at DS-1 of the HTU-R
LOS1
No synchronization of HTU-C and HTU-R on Loop 1
LOS2
No synchronization of HTU-C and HTU-R on Loop 2
LLOS
DSX signal is absent from the network interface or is of a format which does not
match the provisioning of the HDSL circuit
RLOS
DS1 signal is absent from the network interface or is of a format which does not
match the provisioning of the HDSL circuit
ARM
The loopback arming sequence has been detected
HTU-R Options Display (“VIEW”)
Message
Description
Settings
Default
TXLV
DS1 Transmit Level
0 dB, -15 dB
0 dB
PRM
Performance Reporting Messages
NPRM, SPRM, None
None
Parameter Settings Display (“PROV”)
Message
Description
Settings
Default
LBO
DSX-1 Transmit Level
0, 133, 266, 399, 533
0
CODE
Line Code
AMI, B8ZS
B8ZS
FRMG
DSX-1 Framing
AUTO, ESF, SF, UNF, FFFC
ESF
NELB
New England 1:6 loopback
EN, DIS
DIS
NLBK
NIU Loopback
EN, DIS
EN
LBTO
Loopback Timeout
0, 120
120
CLOS
Customer Loss Response
AIS, LPBK, CDI
AIS
LTCH
Latching Loopback
T1, FT1
T1
SPWR
Span Power
ON, OFF
ON
SALM
Shelf Alarm
EN, DIS
EN
Loopback Options Display (“LPBK”)
Mode
Select
Loopback State
Loopback Description
LPBK
HTUC
Net
Network loopback at HTU-C
CST
Customer loopback at HTU-C
NONE
No active loopback
HTUR
BLB
Bilateral loopback at HTU-R
NET
Network loopback at HTU-R
CST
Customer loopback at HTU-R
NONE
No active loopback
HRE1
NET
Network loopback at HRE1
CST
Customer loopback at HRE1
NONE
No active loopback
HRE2
NET
Network loopback at HRE2
CST
Customer loopback at HRE2
NONE
No active loopback
WARRANTY
Carrier Network 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 Network Equipment Warranty: (877) 457-5007, Document 414.
COMPLIANCE CODES
This product is intended for installation in restricted access locations only and in
equipment with a Type “B” or “E” installation code.
Input current at maximum load is 0.7 A at –48 VDC. Maximum output at over current
condition is 165 mA at –190 VDC.
61246003L8-22B
0006
DDM+ HTU-CM
■
For a complete Installation and Maintenance Practice: (877) 457-5007, Document #455. Please have your fax number available.
■
CODE
IN
OUT
Installation Code (IC)
A
–
Telecommunication Code (TC)
–
X
Power Code (PC)
F
C
C A U T I O N
C A U T I O N !
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.
MODE
SELECT
