Tx and Rx LED’s on data channel-This is my favorite as from this you can tell which side of focal 903 has problem.
When telemetry is working fine both RED and GREEN led’s will blink continuously telling you that focal is receiving and transmitting data.
In surface focal unit RED led represents local computer and Green led represents remote computer(POD),So if your green led is blinking and red is not,This condition represents that pod is sending data but computer in control van has problem.
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