Ring Communications CB901EX - Manual (Page 19)

April 2012 Operations Manual CB901EX
POWER REQUIREMENTS.
Power for stations:
Power needs for stations are based upon the basic figure of 250 mA per station.
Station power is connected to screw terminals on the power distribution board PCB935
(in DP979 and DP980) marked + and - 24VDC.
Remote local power supply to stations.
A station or a group of stations can be connected to remote power units. If the central is
programmed with all or group call, all stations in such a group can be switched on simultaneously and
the power unit must be dimensioned accordingly, i.e., at 150 mA per station.
Page 19 of 77
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