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ROI-S04488
TX DPU ALM
D
BER ALM
I
F SYNC ALM
H
MOD ALM
E
DPU SERIAL
F
From/To
FIG. 2-1 (2/3)
DPU SERIAL
G
DATA UP
A
DATA DOWN
B
CPU CLK
C
Notes: 1. *Optional.
2. Four relay contacts are outputed from interface terminal (ALM/ALM AUX). Plural alarms can be applied
to a single relay. The figure shows the default settings. Refer to paragraph 3.4 for changing the settings.
3. Refer to the table 3.1 Interface Terminals and Jacks for the details of pin assignment for the alarm signals.
CPU
INTERFACE
TERMINAL
INTERFACE
PM CARD*
TERMINAL
LA PORT
CPU
PHOTOCOUPLERs
NMS/RA
RELAYs
Fig. 2-1 Functional Block Diagram of IDU in 1+0 System (3/3)
TX PWR ALM
RX LEV ALM
APC 1 ALM
S-P
APC 2 ALM
CONV
IF INPUT ALM
INPUT LOSS 1-16
TX CLK LOSS
RX CLK LOSS
S-P
CONV
OUTPUT LOSS 1-16
DEM ALM
H BER ALM
FE LB CTRL 1-16
MOD CW
S-P
NE LB CTRL 1-16
CONV
AIS CTRL 1-16
CPU ALM
CPU RESET
HOUSEKEEPING
INPUT
HOUSEKEEPING
OUTPUT
FUNCTIONAL OPERATION
ODU
IDU
INTERFACE
TERMINAL
NO
COM
MAINT
RL4
NC
MAINT
NO
RL1
COM
TX ALM
NC
NO
RL2
COM
RX ALM
NC
NO
RL3
COM
BER ALM
NC
2-7/8
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