User's Manual Part 5

Indicators (DC-DC CONV)
LED Indication Remarks
PWR The PWR switch of the DC-DC CONV is
turned on.
Switches (DC-DC CONV)
Switch Operating Remarks
PWR IDU and ODU power on/off switch. Refer to Start-up and Shut-down the
Equipment in Maintenance Section
User Interface Pin Assignment (DC-DC CONV)
Terminal Description
SELV
SELV (DC IN)
(Molex M5569-04A1 Connector,
4 Pins)
−20 to −60/20 to 60 V DC power input
Pins 1 and 3 0 V /(or +20 to +60 V)
Pins 2 and 4 −20
to −60 V/(or 0 V)
−43V OUT
(Molex M5569-02A1,
2 pins) (DC OUT)
−43
V DC power output (connects to the SELV connector of
the MODEM module using accessory cable)
Pin 1 Ground
Pin 2 −43
V
ALM Power supply ALM signal output
(D-Sub Female, 9 pins)
Pins 6 (COM), 1 (NC) and
2 (NO
)
PS and input voltage alarm output
Between Between
Pins 1 and 6 Pins 6 and 2
Normal state : Closed Open
Alarm state : Open Closed
Pin 9 Ground
Pins3,4,5,7,8 No connected
OPERATING EQUIPMENT ROI-S05749
2-24