Electrical Installation
CAUTION: Always disconnect all telephone lines
before servicing or disassembling this equipment. The
power connection with frame ground should be the
first electrical connection connected when installing
D-SERV units, and the last electrical connection
disconnected when removing D-SERV units.
Stand-Alone AC Power Connection
Plug the power cord on the D-SERV unit into a grounded 115 VAC
power receptacle.
As soon as power is applied to the D-SERV DSU/CSU the unit will
commence self test.
Stand-Alone DC Power Connections
Use a power supply capable of providing a voltage in the range 22 to
56 VDC. Power supplies are available from Kentrox.
Remove the Power/Alarm connector from the back panel by
unscrewing the the screws at either end of the connector (see Figure
14).
Using 14 AWG leads or larger, wire earth ground to the frame ground
post (post 2) to ground the unit.
CAUTION: Make sure your DC power supply is OFF
or unplugged before making power connections.
¤ Using 20 AWG to 14 AWG leads, wire power to the
supplied six-post connector plug. Connect the positive
voltage from your DC power supply to the V+ post (post 1)
and the negative voltage from your DC power supply to the
V- post (post 3).
Operator's Manual
28
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