Simplex 4100 Series - PA Speech, Spare Speech, WIP Speech, Comms and Spare Comms Cable Faults

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5.7 PA Speech, Spare Speech, WIP Speech, Comms
and Spare Comms Cable Faults
PA Speech Cable Faults, Spare Speech Cable Faults, and WIP Speech Cable Faults refer to the connections
between SPIF cards and Secondary ECPs and equipment racks (remote units). As can be seen in the Figure
below, the PA Speech, Speech Backup, and WIP Speech terminals will correspond to the respective Fault on the
ECP System Fault Display.
NOTE: Any WIPS Module Failure or WIP Speech cable fault will activate ‘WIP SYSTEM FAULT’ LED on
the ECP System Fault Display. The LED will flash while unacknowledged and be steady for a
latched or acknowledged fault.
SPIF9506/SPIF9709 Wiring Diagrams
Comms Cable Faults and Spare Comms Cable Faults on the ECP System Fault Display are related to the loss of
communications between SPIF interfaces. The COMMS BUS and COMMS BACKUP terminals on a SPIF card
(shown above) are relating to Comms Cable Faults and Spare Comms Cable Faults, respectively.