Ring Communications CB901EX User Manual
Page 22
CB901EX Operations Manual March 2011
STATION POWER SUPPLY.
In a fully equipped Ring-Master System CB901EX all stations can simultaneously be connected
to program channels - 240 stations. The total power consumption will then be approx. 36 Amp. (240 x
0.150 A).
IMPORTANT — STATION POWER CALCULATION.
Each station with access to Alarm/Program Distribution Feature requires 150 mA. Each station
in normal conversation requires 150 mA
Each station in rest condition requires 15 mA.
IMPORTANT NOTES:
To transfer all/group call signals to subscribers connected to cards in position 11, 12 and 13 the
flat cable NMF6012 (part of DP977) must be installed on the back side of the Basic Cardrack DP979.
If no cable is available, make a jumper between:
Plug P1, pin 10A on card no. 10 to
Plug P1, pin 10A on card no. 11 to
Plug P1, pin 10A on card no. 12 to
Plug P1, pin 10A on card no. 13.
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