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31
Part B. IPS Cabinet Station Link
FAULT
ISOLATION
PROCEDURE
CORRECTIVE ACTION
IPS will not
activate via RF
link.
Determine the fault(s)
within the IPS
cabinet/station side of the
RF link. First determine
whether the encoder’s
DTMF tones are audible at
the IPS cabinet/station.
If the DTMF tones are
audible or the monitoring
device at the SQ LED
illuminates, determine
whether DTMF tones are
being received and
processed.
Using a monitoring device, have the central control point dispatcher send a
CLEAR command. If the DTMF tones are audible on the monitoring
device, perform the following step. If the tones are not audible, skip to the
next step.
Have the DTMF tone transmitted again and observe the SQ (squelch)
LED. If the SQ LED illuminates, this situation indicates that the IPS
cabinet station is receiving the transmission.
If the tone is not being received at the monitoring device or the IPS cabinet
station, consider the RF link path and propagation.
Have the central control point dispatcher send another CLEAR command.
If the DEC (decoder active) LED flashes, this situation indicates that
DTMF tones are being received and processed.
IPS will not
activate via RF
link (con't.).
If the SQ LED or DEC
LED do not flash, verify
radio connections.
Correct radio connections.
IPS will not
activate via RF
link (con't.).
If the prior three steps do not determine the fault(s) or resolve the problem,
contact manufacturer’s service personnel.
Содержание IPS 400
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