CANOGA PERKINS 2240 Fiber Optic Modem - Manual (Page 97)

2240 Fiber Optic Modem
97
6. Diagnostic Procedures
6.1 2240 / 2201 Diagnostic Procedures
The following diagnostic procedures should be followed to test the 2240 system,
troubleshoot a defective link or detect a defective fiber optic cable, connector,
modem or power supply.
NOTE: Refer to the 2201 Rack Chassis User Manual
for diagnostic procedures for the 2201 Rack
Chassis and power supplies.
6.1.1 Required Equipment
1) Multimeter - for AC voltage, resistance and continuity tests
2) Fiber Optic Power Meter - should be calibrated atthe correct optical wave
length with the appropriate optical connectors
3) A short (one meter or less) fiber optic jumper cable consistent with the
modem optics under test, terminated with the appropriate connectors
4) A Bit Error Rate Tester (BERT) with the appropriate electrical interface and
cable
Step Symptom Possible Cause(s) Action
1 No power indicator No AC power Check AC
on front panel(s) power
source
2 No power indicator Defective modem Replace
on front panel(s) Modem
NOTE: Once any power system problems have been corrected,
continue the system checkout after the Loopback Diagnostic
Procedure.