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HARRIS
888-9058-001
WARNING: Disconnect and lockout AC primary power prior to servicing
47
28: EXCITER MUTE
29: EXCITER FAULT
30: PA CABINET POWER SUPPLY FAULT
31: PA CABINET MODULE FAULT
32: PA CABINET COOLING AIR LOSS
33: PA DOOR INTERLOCK
34: SPARE 1 FAULT
35: NOT USED
36: GROUND
37: OPTIONAL STATUS VOLTAGE INPUT
Status Functions:
TRANSMITTER ON: Indicates the state of the transmitter. The line will be asserted low
when the transmitter is on.
LOCAL: Indicates the transmitter will not accept remote command inputs. This line will be
asserted low when the transmitter is in the LOCAL mode.
NOTE:
The remote TX OFF command will still work in the local mode. This was done
for safety. The only way to defeat this is removing the control input cable.
VSWR FOLDBACK ACTIVE: Indicates antenna VSWR has caused the transmitter to
reduce its output power by some amount. It will be asserted low while the foldback is
active.
VSWR FAULT: A sudden major increase in reflected power has created a VSWR fault.
EXTERNAL INTERLOCK: Indicates the status of the external interlock. If the interlock is
open, a low will be asserted.
PHASE LOSS: Indicates status of the internal AC phase loss detector. If detector senses
low voltage on one of the three phase power lines or the phase sequence is reversed,
PHASE LOSS will be asserted low.
EXCITER MUTE: Indicates that some function has muted the exciter. Asserted low for
mute.
EXCITER FAULT: Indicates exciter fault directly in single exciter configuration. Indicates
exciter fault from optional exciter switcher if used. Asserted low for fault.
SUPPLY FAULT: Indicates one or more of the 50 volt power supplies has failed. Asserted
low upon fault.
