Paradyne 7976 - Manual (Page 2)

2 7976-A2-GZ40-00 March 1999
Connecting Power to the Unit
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 +24 Vdc power cable: Connect the
unit to an external dc power source as described in
Connecting the Unit to an
Optional External +24 Vdc Power Source.
If you will use a –48 Vdc power supply: Connect the unit to an external –48 Vdc
power source as described in the documentation shipped with the power supply
and power cable.
Optional Power Sources
Using the optional dc power cable, the unit is capable of operating on either a
+24 Vdc power source, – 48 Vdc single source battery, or – 48 Vdc redundant
source batteries (for power backup).
Connecting the Unit to an Optional External +24 Vdc Power Source
Using the dc power cable, the Hotwire 7976 Standalone Termination Unit is
capable of operating on a +24 Vdc power supply.
"
Procedure
To use the dc power cable:
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 7976 Standalone Termination Unit.
1
2
3
4
5
6
X
X
Ground
RTN
+24 Vdc
X
Black
Red
Green
White
Orange
Blue
99-14158-02
+24 Vdc Power Supply Pinouts