ADTRAN DDM+ HTU-C M User Manual

Ddm+ htu-cm, Mode select, Htu-c

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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

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