LED
Correct Operating Condition
Fault Indicators
Probable Cause
Corrective Action
PWR
On
Off
Power is not supplied to unit.
Provide power to unit.
SM
No single mode carrier detected.
Restore connection to predecessor SISNet Distance Extender's single mode TxD.
MM
No multimode carrier detected.
Restore connection to predecessor SISNet Repeater's multimode TxD.