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Initial Startup and Configuration
3-2
7975-A2-GB20-40
December 1998
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 dc power cable:
Connect the unit to
an external dc power source as described in
Connecting the Unit to an Optional
External DC Power Source
.
Connecting the Unit to an Optional External DC Power Source
Use the following procedures only if you want to use the dc power cable.
Using the dc power cable, the Hotwire 7975 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 earth 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 7975 Standalone Termination Unit.
1
2
3
4
5
6
X
X
Earth Ground
RTN
+24 Vdc
X
Black
Red
Green
White
Orange
Blue
98-14158-01
+24 Vdc Power Supply Pinouts