Connecting Power; Connecting To An Optional External Dc Power Source - Paradyne 7974 User Manual

3. Initial Startup and Configuration

Connecting Power

If your package includes a power pack: Plug the power pack into an AC outlet
having a nominal voltage rating between 100 – 240 VAC. Connect the output cable
of the power pack to the connector marked POWER on the rear panel.
If your package includes a direct-connection DC power cable: Connect the
unit to an external +24 or – 48 VDC power source as described in
an Optional External DC Power Source

Connecting to an Optional External DC Power Source

Using the DC power cable, the TDM SDSL unit is capable of operating on a +24 or
–48 VDC power supply.
Procedure
To use the DC power cable with +24 VDC:
Procedure
To use the DC power cable with –48 VDC:
Table 3-1.
3-2
1. Connect the green wire to a suitable ground.
2. Connect the orange wire to the +24 VDC source.
3. Connect the white wire to the return.
4. Cut the black, red, and blue wires off at the outer insulation.
5. Plug the power connector into the Power receptacle of the unit.
1. Connect the green wire to a suitable ground.
2. Connect the orange wire to the – 48 VDC source.
3. Connect the black wire to the return.
4. Cut the red, white, and blue wires off at the outer insulation.
5. Plug the power connector into the Power receptacle of the unit.
Power Input Connector
Pin Number Wire Color
1 Black
2 Red
3 Green
4 White
5 Orange
6 Blue
December 2001
.
Signal
– 48 VDC Return
– 48 VDC Return
Ground
+24 VDC Return
– 48 VDC
+24 VDC
No Connection
Connecting to
6 5 4
3 2 1
99-16291
7900-A2-GB21-20