Microwave Radio Communications SCM4000, Technical Reference Manual, Page: 203 / 274

Troubleshooting 4-13 SCM4000 Operator’s Guide/Tech Ref Manual
Table 4-8: General System Problems
Problem Possible Cause Suggested Operator Action
Suggested Technical
Staff Action
General System Problems
No Data/Corrupted
Data There may be errors in the system that
preclude operation. • Review all error codes displayed on the
alphanumeric display.
See ”Error Codes”
on page 4-2 . Correct error, as required.
• Contact technical staff.
If problem persists,
possible hardware failure.
Contact MRC Technical
Support .
Receive signal too low/no carrier lock -
The signal coming into the unit is too low,
too noisy to lock to, or missing. • Check and adjust the RF path to increase
signal strength, move antennas, or
remove obstacles to get a clearer
transmission path.
• Try moving to a different (cleaner)
channel.
• Contact technical staff.
Low SNR - The signal-to-noise threshold
is too low to pass the selected modulation
type. • If you are using a more dense coding,
i.e., 64QAM, try moving to a more robust
coding, i.e., QPSK.
• Check and adjust the RF path to increase
signal strength, move antennas, or
remove obstacles to get a clearer
transmission path.
• Try moving to a different (cleaner)
channel.
• Contact technical staff.