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C A U T I O N ! 

SUBJECT TO ELECTROSTATIC DAMAGE

OR DECREASE IN RELIABILITY.

HANDLING PRECAUTIONS REQUIRED.

For more information, refer to the Installation and Maintenance Practice (P/N 61223HDSL4L2-5) available online at 

www.adtran.com

.

HDSL4

T200 H4TU-R

P/N 1223424L2

CLEI:  T1L83Z3C_ _

T200 HDSL4 Transceiver Unit, Remote-Local Powered

REM

LOC

LBK

1223424L2

LOCAL

DSL 1

DSL 2

DS1

ALM

(GRN)

(YEL)

ESF/SF

(GRN)

(YEL)

(GRN)

(YEL)

B8ZS/AMI

LLB/RLB

RX

M

O

N

TX

R

S

2

3

2

*61223

424L2-

22B*

 CARD EDGE PINOUTS

PROVISIONING OPTIONS

Provisioning options are assumed from settings made at the H4TU-C.

FEATURES

TScan

The ADTRAN

®

 T200 H4TU-R incorporates the TScan

 feature. TScan allows for remote 

retrieval of circuit diagnostics and performs advanced fault location. For more information about 

TScan refer to the Installation and Maintenance practice.

Bad Splice Detection

The Runtime TScan bad splice detection feature is an ADTRAN proprietary non-intrusive method 

for detection of anomalies (bad splices) in the copper plant. This feature non-intrusively monitors 

the cable pair during runtime for the presence of bad splices, which may potentially impact service. 

Poor splices in the cable are often undetected by normal testing methods. Often, these splices 

present no problem for the data transmission equipment until the point at which oxidation with the 

splice itself causes a rapid impedance change. Such a change in impedance may cause errors, 

signal margin fluctuation, and/or a retrain of the DSL transceivers. The splice detection feature is 

accessed from the Troubleshooting Screen via the craft access port. 

Fast Retrain

Fast Retrain is an ADTRAN proprietary feature that minimizes downtime due to an intermittent 

impairment which due to its duration cannot be bridged. When such impairments occur, the fast 

retrain feature will be invoked to restore service within 5 to 7 seconds, instead of the traditional 25 

to 30 second retrain duration.

NOTE: Fast-Retrain capable units must be installed on both ends of the circuit for this feature 

to function properly. Also, if there is a failure, for any reason, of a fast retrain attempt 

then the traditional (25-30 second) retrain will be initiated.

Pin

Designation

Description

1

CH GND

Chassis ground

5

DS1-T1

DS1 receive out tip (to customer interface)

7

H1-T

HDSL4 Loop tip (facility)

11

CH GND

Chassis ground

13

H1-R

HDSL4 Loop ring (facility)

15

DS1-R1

DS1 receive out ring (to customer interface)

17

48 VR

48 VDC Return

20

VCC

+5 VDC for protection switching

27

CH GND

Chassis ground

35

48 V

48 VDC; range ±24 to ± 56 VDC (48 VDC nominal)

41

H2-T

HDSL4 Tip (Loop 2)

47

H2-R

HDSL4 Ring (Loop 2)

49

DS1-R

DS1 transmit in ring (from customer interface)

55

DS1-T

DS1 transmit in tip (from customer interface

FRONT PANEL LED STATUS

OPTIONS

Front Panel Pushbuttons

LOC

Initiates a bidirectional loopback of the T200 H4TU-R toward the network and customer

REM

Initiates a loopback at the H4TU-C toward the customer

DS1 MONITOR JACKS

TX

DS1 signal from the DCP toward network (nonintrusive)

RX

DS1 receive from the local loop (nonintrusive)

POWER

This specific unit is intended for 

Local Power Only

. If a Span Powered unit is required, refer to 

P/N 1223426L2. 

 

A local power supply is available from ADTRAN by ordering P/N 1353.DSK48V04.

COMPLIANCE

This product is intended to be installed in Restricted Access Areas only and in equipment with

 

a Type “B” or “E” enclosure. 

This product meets all requirements of Bellcore GR-1089-CORE (Class A2), ANSI T1.418-

2002. This product is NRTL listed to the applicable UL standards.

WARNING:

Up to –200 VDC may be present on telecommunications wiring. Ensure 

Chassis ground is properly connected.

DSL1/DSL2

!

!

Green

 

Red

Loop 1/Loop 2 synchronization achieved and signal is present

 

No errors currently detected, and SNR margin 

≥ 

3 dB

Loop 1/Loop 2 synchronization not achieved, in sync with 

errors, or SNR margin < 3 dB

DS1

!

!

Green
Red

DS1 signal present and no errors currently detected
No DS1 signal, or signal present with errors

ALM

"

!

!

Off

 

Yellow

 

Red

No active alarm present

 

Loss of DSX-1 signal from the network

 

Loss of DS1 signal from the customer (CPE)

ESF/SF

"

!

!

Off
Green
Yellow

Unit is provisioned for UNFRAMED data
Unit is provisioned for SF data
Unit is provisioned for ESF data

B8ZS/AMI

!

!

Green
Yellow

Unit is provisioned for AMI line code
Unit is provisioned for B8ZS line code

LLB/RLB

"

!

!

Off
Yellow
Green

No local loopbacks active
Local loopback active
Active loopback at the H4TU-C toward the customer

Code

Input

Output

Power Code

C

C

Telecommunication Code (TC)

X

X

Installation Code (IC)

A

61223424L2-22B

0505

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