User's Manual

Confidential & Proprietary 123/136
RPSU ON
The power is not supplied or the polarity of -48V is reversed.
The power is supplied.
ID Setting
Use an RS-232 Cable(Direct Cable) for connection with DEBUG port of ROU RCPU. Execute
GUI (Graphic User Interface). When you connect ROU directly with a Serial port, the screen will
show the TREE of a direct line of units connected with ROU. Basic ROU ID is set as ODU1-
DOU1-ROU1. Set it with the ID of a designed ROU. Before setting an ROU ID, you need to
check if ROU is connected with the optical port of ODU or OEU (See System Topology at
"Setting whether to use BIU").
If multiple ROUs connected to BIU share the same ID, the screen will fail to read status
information on the ROUs with the same IDs. Therefore, make sure not to redundantly set ROU
ID.
Checking Communication LED of RCPU
Check if TXD and RXD LEDs in RCPU make communication. Receiving FSK signals from BIU,
ROU sends requessted status value to BIU. During reception, RXD LED flicks. During
tramsmission, on the other hand, TXD LED flicks. At this time, you need to check if whether to
use a corresponding ROU is checked on (See "whether to use BIU OEU/ROU").
ROU Optic Comp Operation
ROU has the function of automatically compensating for optical loss. It can do the work for up to