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E F - 7 0 1 M I N T E R F A C E
Data Troubleshooting Tips
Symptom
Cause
Solution
Data LED is off even though
units are connected at each
end.
1. Problem in the wiring from the
DB-15 to the modem or problem
with the transmission medium.
2. Baud rate or other modem
requirements not compatible with
EF-701M.
3. The EF-701M units are set to
different baud rates.
4. One EF-701M is set to Matrix
Direct Mode when connected to
another EF-701M.
1. Adjust wiring.
2. Adjust EF-701M units to match.
3. Adjust EF-701M units to match.
Data LED blinks rapidly.
EF-701M is receiving a "break" signal
from the RS-422. Typically a power
loss on the modem at the far end
causes this.
Check modem power connections.
