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
.
©2006 ADTRAN, Inc.
All Rights Reserved.
HDSL4
239 H4R
P/N: 1223445L2
CLEI: T1R6U89D_ _
HDSL4 239 H4R Repeater
*612234
45L2-2
2A*
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
1
GND
Ground
7
NC
No Connect
2
NC
No Connect
8
T
Network Loop 2 Tip
3
T1
Customer Loop 1 Tip
9
R
Network Loop 2 Ring
4
R1
Customer Loop 1 Ring 10
GND
Ground
5
T1
Network Loop 1 Tip
11
T
Customer Loop 2 Tip
6
R1
Network Loop 1 Ring
12
R
Customer 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
