Comtech EF Data SDM-300A - Manual (Page 96)

SDM-300A Satellite Modem Revision 6
Front Panel Operation MN/SDM300A.IOM
5–2
5.1.1 LED Indicators
The 10 LEDs on the front panel indicate modem summary faults, status, and alarms. Table 5-1
lists the indicators.
Table 5-1. LED Indicators
Name LED Meaning
Faults
Transmit Red A fault condition exists in the transmit chain.
Receive Red A fault condition exists in the receive chain.
Common Red A common equipment fault condition exists.
Stored Yellow A fault has been logged and stored.
The fault may or may not be active.
Status
Power On Green Power is applied to the modem.
Transmitter On Green Transmitter is currently on.
This indicator reflects the actual condition of the transmitter, as opposed
to the programmed condition.
Carrier Detect Green Decoder is locked.
Test Mode Yellow Flashes when the modem is in a test configuration.
Alarms
Transmit Yellow A transmit function is in an alarm condition.
Receive Yellow A receive function is in an alarm condition.