UTMC OTU/MOVA Handbook
667/HB/31601/000
Page 26
Issue 5
4.2.2 Modem Power Supply Selection
The Processor card normally provides the modem power. Two voltage supplies are
available on this card: 5V (400mA) and 12V (1000 mA) connector PL3 as follows:-
Cableform Position
Voltage Supply
PL3 socket 3
5V Supply
PL3 socket 2
12V Supply
PL3 socket 1
0V Supply
:
Before connecting the plug into the modem with the unit powered up,
check with a multi-meter that the correct power supply selection has been
made.
Connection of MultiTech MT5634IND Lease Line Modem
Wire the fused power cable to plug 531/4/03539/000 and insert into CPU card
connector PL3. Check the voltage with meter before connecting to modem.
Figure 4.2 – Lease Line Modem Power Connections
Connect the modem line centre pair of wires (normally red and green) to the 2-wire
lease line circuit.
0 V to CPU PL3 socket 1
+12V to CPU PL3 socket 2