User's Manual

EX7100 Technical Manual - Troubleshooting
©1999 Exicom Technologies (1996) Ltd 5-4 Issue 1 - February 2001
Symptoms Possible Causes How To Fix Additional Comments
Rx Lock frequently lost. Interference, intermittent
connector/feeder/antenna fault.
Marginal RF path.
A communications scanning
receiver can be very useful to
identify interference sources.
Measurements of transmit power
at antenna, substitution of feeders
and antennas.
A high power attenuator can be
used to confirm the available fade
margin.
Problems with repeater operation. G703 coaxes not crossed over. Crossover coaxes.
No dial tone, Rx Lock present. Line connections to EX7100. Line
Interface module fault.
Check line connections. Refer to
Section 7.13 for details.
Is the fault common to all six lines?
Loop back testing of the line
interfaces can be a useful
diagnostic tool.
Link will not set-up, Tx LED not on System configured for On-demand
Mode
Refer to Section 3.4.1 for details