Specifications

GEMINI
2
Traffic Outstation Handbook
667/HB/32600/000 Page 133 Issue 11
Symptom
Possible Diagnosis
Action to Check Diagnosis
Examine Fault Log
Check using handset codes FLG and FLT for PAKNET related comms faults
(PCF see section 13.6.2). This will give information on when faults have
occurred.
Processor to PAKNET
connections
Check the modem to processor connections; check that the cable is plugged
into PL2 on the processor and into the modem. Check the power cable is
correctly installed at both the modem and processor.
(a) Unit will not
communicate with the
Instation (continued)
Modem power supply
failure
Check if the modem’s ‘‘ON” LED is lit. The LED has 3 states –
Constant On – Powered correctly and service available.
Flashing – Either Powered but Paknet service is not available or
communicating with the Instation (confirm by looking for a similar state
on the CPU card Comms Led (LP 2)).
Off – No power to modem. This may be because the software is timing a
retry delay, before attempting to restore communications.
Power the outstation off/on so that it will attempt to restore PAKNET modem
operation. Check that voltage on the modem power cable is present (see
section 5.2.2 on page 71). If no voltage present, replace the processor card.
Note: If communications cannot be established then power is only
applied to the modem for approximately 5 seconds, before the software
enters a retry delay sequence.
Modem Failure
If all the above checks have shown no problems then replace the modem.