ADTRAN HDSL HTU-C/DDM+ User Manual
Htu-c / ddm
HTU-C / DDM
JOB
A
ID
61246003L2-22B
0003
HTU-C / DDM+
CLEI: T1L3B5BA_ _
HTU-CM
1246003L2
R
S
2
3
2
STATUS
STATUS LEDs
STATUS
●
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
●
YELLOW
Loopbacks active
✷
FLASHING
In-band loopbacks armed
●
GREEN
Functioning properly
✷
FLASHING
ES, SES, or BPV detected at either DSX or DS1 interface
RS-232 DB-9 CONNECTOR
■
Used to access the HDSL utilities menu tree via VT100 emulation software such as
terminal, Hyper Terminal – Private Edition and ProComm Plus.
■
Provision terminal port as follows:
Data Rate — 9.6 kbps, 19.2 kbps
Asynchronous Data Format — eight data bits, no parity (none), one stop bit
■
Hardware Flow Control should be disabled.
■
When using a PC with terminal software, be sure to disable any power saving programs.
COMPLIANCE CODES
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 0.7 A. Output ratings on the net-
work are maximum 165 mA at -190 Vdc.
WARRANTY
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. and Canada Carrier Network Equipment Warranty: (877) 457-5007,
Document #414.
HARDWARE SWITCHES
SW1
■
Rotary switch sets the DSX-1 line build out
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
Note: Positions 5,6 & 7 are not used.
SW2
■
Is used to provision the card. Default settings are in bold.
SW2-1 — sets the line code to either AMI or B8ZS
SW2-2 — sets the T1 framing to either Unframed or Framed
Note: Unframed operation ignores the setting of SW2-3.
SW2-3 — sets the T1 framing to either SF or ESF
SW2-4 — Enables or disables the NIU loopback option
SW2-5 — Enables or disables the Loopback Timeout option
Default timeout setting is 20 minutes
Must be enable prior to initiating a loopback
SW3
■
Selects the span powering voltage
LV — selects –140 Vdc to span power a single HTU-R or
one HRE and an HTU-R
HV — selects –190 Vdc to span power two HREs and an
HTU-R
For complete Installation and Maintenance: (877) 457-5007, Document #461. Please have your fax number available.
+
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.
Code
Input Output
Power Code (PC)
F
C
Telecommunication Code (TC)
–
X
Installation Code (IC)
A
–