Mocomtech SLM-5650 The indicators are defined as follows:

SLM-5650 Satellite Modem Revision 2
Front Panel Operation MN/SLM5650.IOM
4–3
The indicators are defined as follows:
LED Color Condition Status
Green No Unit Faults or Stored Faults
Red A Unit Fault exists
Unit Status
Blinking There are Stored Faults.
Green No Tx Traffic Faults or Alarms exists
Orange A Tx Traffic Alarm exists
Tx Status
Red A Traffic Fault exists
Green No Rx Traffic Faults or Alarms exists
Orange A Rx Traffic Alarm exists
Rx Status
Red A Rx Fault exists
Green Transmitter is currently on. This indicator reflects the actual condition of
the transmitter, as opposed to the programmed condition.
Tx On Off Transmitter is currently OFF.
Alarms
Green Demod has constellation lock.
IF Lock Off No constellation lock.
Green Decoder is locked.
Data Lock Off Decoder is not locked.
Green The Unit is in Remote Communication Mode.
Remote Off The Unit is in Local Mode – remote monitoring is possible, but no remote
control
Test Mode Orange A Test Mode is selected (Example: IF Loopback)
Off No test mode is selected.