Connecting Power To The Unit; Optional Power Sources; Connecting The Unit To An Optional External Dc Power Source - Paradyne HotWire 7976 User Manual

Initial Startup and Configuration

Connecting Power to the Unit

Optional Power Sources

Connecting the Unit to an Optional External DC Power Source

3-2
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
External DC Power Source
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).
Using the dc power cable, the Hotwire Model 7976 Standalone Termination Unit
is capable of operating on a +24 Vdc power supply.
NOTE:
The E1 M/SDSL Unit is typically powered by the ac power module. Use the
following procedures only if you want to use an optional dc power source.
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 Model 7976 Standalone Termination Unit.
Black
1
Red
2
Green
3
White
4
Orange
5
Blue
6
+24 Vdc Power Supply Pinouts
August 1998
Connecting the Unit to an Optional
.
X
X
Earth Ground
RTN
+24 Vdc
X
98-14158-01
7976-A2-GB20-10