User's Manual Part 3

INITIAL LINE UP ROI-S05750
3-3
Chart 3-1 Start-up
Caution: Do not apply a voltage to the equipment that varies sharply.
The equipment may operate improperly.
Caution: Do not remove/connect the IF cable with the IDU power
ON. Turn the IDU power OFF before connecting/
disconnecting the IF cable, or equipment may be damaged.
Apparatus:
Suitable Screwdriver
Digital Multimeter
Step Procedure
Notes: 1 The ODU power is supplied from the IDU
1+0 SYSTEM
1 Check that the IF cable between the MODEM and the ODU is
firmly connected,
2 Before connecting the power cable connector to the MODEM,
check that the SELV input voltage is −48V (allowable range;
within
–40.5 to –57 V) with the digital multimeter, (see Fig. 3-1),
3 Pull out the PWR switch lever and turn on,
4 Confirm that the PWR indicator on the MODEM is ON.
1+1 SYSTEM
1 Check that the IF cable between the No.1 MODEM and the No.
1 ODU is connected,
2 Before connecting the power cable connector to the No.1
MODEM, check that the SELV input voltage is −48V
(allowable range, within
–40.5 to –57 V) with the digital
multimeter, (see Fig. 3-1),
3 Pull out the PWR switch lever and turn on, (see Fig. 3-1),
4 Confirm that the PWR indicator on the No.1 MODEM is ON.
5 Repeat steps 1 to 3 for No.2 MODEM,
6 Confirm that PWR indicator on the No.2 MODEM is ON.