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 61223445L2-5) available online at www.adtran.com.
©2006 ADTRAN, Inc.
All Rights Reserved.

HDSL4

239 H4RP/N: 1223445L2CLEI: T1R6U89D_ _

HDSL4 239 H4R Repeater

*61223445L2-22A*
H4R CARD EDGE PIN ASSIGNMENTS
239 H4R RESISTANCE
Tip-to-Ring resistance is approximately 6 Ω for each pair (with no power applied).
LOOPBACK AND CONTROL CODES
Refer to the Installation and Maintenance Practice of the H4TU-C or H4TU-R used in the circuit for a list of loopback codes.
HDSL4 LOOP SPECIFICATIONS FOR OPTIMUM OPERATION
NOTE: The H4TU-Cs (P/N 1221401L6, 1221403L6, 1221404L6) support only one repeater in the HDSL4 circuit.Refer to the H4TU-C or H4TU-R Installation and Maintenance Practice for loop parameters, including Attenuation and Resistance Budgets for span powering.
COMPLIANCE
The 239 H4R complies with UL 60950, Third Edition. The 239 H4R is intended for installation in restricted access locations only. Ensure chassis ground is properly connected.
Pin Designation Description Pin Designation Description
1GND Ground 7NC No Connect
2NC No Connect 8 T Network Loop 2 Tip
3T1 Customer Loop 1 Tip 9 R Network Loop 2 Ring
4R1 Customer Loop 1 Ring 10 GND Ground
5T1 Network Loop 1 Tip 11 TCustomer Loop 2 Tip
6R1 Network Loop 1 Ring 12 RCustomer Loop 2 Ring
H4TU-C H4R1 H4R2 H4TU-R
Code Input Output
Power Code (PC) C C
Telecommunication Code (TC) X X
Installation Code (IC) A –
1st Segment 2nd Segment 3rd Segment
LED STATUS INDICATORS
Label Indication Description
LP1/LP2
NET
{ Off
z Solid Green
4 Fast Flashing Green
4 Slow Flashing Green
z Solid Yellow
4 Flashing Yellow
z Solid Red
4 Flashing Red
No span power is present
Synchronized with an Signal-to-Noise Ratio (SNR)
margin greater than the SNR Margin Alarm Threshold
Flashing three times per second indicates attempt to
synchronize with the H4TU-C
Flashing once per second indicates synchronization
with a SNR margin greater than the SNR Margin
Alarm Threshold; attenuation is greater than the user
recommended Loop Attenuation Alarm Threshold
Synchronized with a SNR margin greater than 0 dB,
but less than the SNR Margin Alarm Threshold
Synchronized with a SNR margin greater than 0 dB,
but less than the SNR Margin Alarm Threshold;
attenuation is greater than the Loop Attenuation
Alarm Threshold
Synchronized with a SNR margin of 0 dB
Flashing once per second indicates synchronization
with a SNR margin of 0 dB; attenuation is greater than
the Loop Attenuation Alarm Threshold
LP1/LP2
CUST
{ Off
z Solid Green
4 Fast Flashing Green
4 Slow Flashing Green
z Solid Yellow
4 Flashing Yellow
z Solid Red
4 Flashing Red
No span power is present
Synchronized with an Signal-to-Noise Ratio (SNR)
margin greater than the SNR Margin Alarm Threshold
Flashing three times per second indicates attempt to
synchronize with the H4TU-R
Flashing once per second indicates synchronization
with a SNR margin greater than the SNR Margin
Alarm Threshold; attenuation is greater than the Loop
Attenuation Alarm Threshold
Synchronized with a SNR margin greater than 0 dB,
but less than the SNR Margin Alarm Threshold
Synchronized with a SNR margin greater than 0 dB,
but less than the SNR Margin Alarm Threshold;
attenuation is greater than the Loop Attenuation
Alarm Threshold
Synchronized with a SNR margin of 0 dB
Flashing once per second indicates synchronization
with a SNR margin of 0 dB; attenuation is greater than
the Loop Attenuation Alarm Threshold
LL/RL z Solid Green
z Solid Yellow
4 Flashing Yellow
A loopback is active at the H4R towards the H4TU-R
A loopback is active at the H4R towards the H4TU-C
H4R is armed but not in loopback
61223445L2-22A
0610