JOB
A
ID
239 H4R
CLEI: T1R5YP3D_ _
239 H4R
1221445L1
LP1
NET
LP2
LP1
LP2
LL RL
(Y) (G)
/
CUST
61221445L1-22B
0205
CARD EDGE PIN ASSIGNMENTS
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.
■
For a complete Installation and Maintenance Practice (P/N 61221445L1-5) faxback: (877) 457-5007, faxback Document 755. Please have your fax number ready.
■
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.
STATUS LEDs
LP1/LP2 NET
●
●
Off
No span power present
●
Solid Green
Synchronized with an SNR margin greater than the user defined SNR
Margin Alarm Threshold
✷
Fast Blinking (Blinking 3 times per second) Attempting to synchronize with the
Green
H4TU-C
✷
Slow Blinking (Blinking 1 time per second) Synchronized with an SNR margin
Green
greater than the user defined SNR Margin Alarm Threshold and the
pulse attenuation is greater than the user defined Loop Attenuation
Alarm Threshold
●
Solid Yellow
Synchronized with an SNR margin greater than 0 dB but less than
the user defined SNR Margin Alarm Threshold
✷
Slow Blinking Synchronized with an SNR margin greater than 0 dB but less than the
Yellow
user defined SNR Margin Alarm Threshold and the pulse attenuation
is greater than the user defined Loop Attenuation Alarm Threshold
●
Solid Red
Synchronized with an SNR margin of 0 dB
✷
Slow Blinking (Blinking 1 time per second) Synchronized with an SNR margin of 0 dB
Red
and the pulse attenuation is greater than the user defined Loop
Attenuation Alarm Threshold
LP1/LP2 CUST
●
●
Off
No span power present
●
Solid Green
Synchronized with an SNR margin greater than the user defined SNR
Margin Alarm Threshold
✷
Fast Blinking (Blinking 3 times per second) Attempting to synchronize with the
Green
H4TU-R
✷
Slow Blinking (Blinking 1 time per second) Synchronized with an SNR margin
Green
greater than the user defined SNR Margin Alarm Threshold and the
pulse attenuation is greater than the user defined Loop Attenuation
Alarm Threshold
●
Solid Yellow
Synchronized with an SNR margin greater than 0 dB but less than the
user defined SNR Margin Alarm Threshold
✷
Slow Blinking Synchronized with an SNR margin greater than 0 dB but less than the
Yellow
user defined SNR Margin Alarm Threshold and the pulse attenuation
is greater than the user defined Loop Attenuation Alarm Threshold
●
Solid Red
Synchronized with an SNR margin of 0 dB
✷
Slow Blinking (Blinking 1 time per second) Synchronized with an SNR margin of 0 dB
Red
and the pulse attenuation is greater than the user defined Loop
Attenuation Alarm Threshold
LL/RL
●
Green
Indicates a loopback at the H4R toward the H4TU-R is active
●
Yellow
Indicates a loopback at the H4R toward the H4TU-C is active
✷
Blinking
Armed but not in loopback.
Yellow
Pin No.
Designation
Description
Pin No.
Designation
Description
1
GND
Ground
7
NC
No Connection
2
NC
No Connection
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
#61221445L1-22B#
239 H4R
