User's Manual Part 2

March 29, 2006 Part ######A revision 00a-DRAFT 85
Chapter 4: Base Station Installation Procedures
Connect the Alarm Cables
The alarm cables are serial cables with DSUB connectors on each end. The DSUB connectors are
secured to their receptacles with 1/8-inch flathead screws.
 To connect the alarm cables
1 Ensure that the main DC power supply is powered off.
2 Connect the alarm cables to the alarm wiring card. Table 4.9 shows the origin and termination point of
each cable.
WARNING: Ensure that the main DC power supply for the base station is
powered off before connecting the alarm cables. The PDP alarm cables are hot at all
times and are not hot-swappable, even when the circuit breakers in the PDP are
powered OFF (down). Failure to power off the main DC power supply may result in
damage to the cables and base station.
The PDP alarm cables are not hot-swappable. Do not disconnect a PDP alarm
cable (labeled “RADIO PDP” or “RF PDP”) from the alarm wiring card if the base
station is receiving +24V/–48V DC or if the fuses in the PDP have not been
temporarily removed.
Origin Termination
Card Port Rack Unit Port
Alarm wiring (slot 12–13) UPPER COOLING RF RF Upper cooling unit SIGNAL
Alarm wiring (slot 12–13) UPPER COOLING RADIO Radio Upper cooling unit SIGNAL
Alarm wiring (slot 12–13) LOWER COOLING RF RF Lower cooling unit SIGNAL
Alarm wiring (slot 12–13) LOWER COOLING RADIO Radio Lower cooling unit SIGNAL
Alarm wiring (slot 12–13) RF PDP RF PDP SGNL
Alarm wiring (slot 12–13) RADIO PDP Radio PDP SGNL
Alarm wiring (slot 12–13) GPS CONTROL Radio GPS clock module CONTROL
Alarm wiring (slot 12–13) GPS ALARM Raid GPS clock module ALARM
Table 4.9 Alarm Cable Summary