Comtech EF Data SDM-2020 - Manual (Page 44)

SDM-2020 Satellite Modulator Revision 7
Front Panel Operation MN/SDM2020M.IOM
5-2
5.2 LED I
NDICATORS
The seven LEDs on the front panel indicate:
• General modem summary faults
• Status
• Alarms
The indicators are defined in Table 5-1 as follows:
Table 5-1. LED Indicators
Name LED Description
Faults
Transmit Red A fault condition exists in the transmit chain.
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.
SYNC Green The modulator is synchronized to the data in the selected framing
mode. The LED is continuously On when the DVB Framing Type
is None.
Transmitter On Green Transmitter is currently On.
This indicator reflects the actual condition of the transmitter, as
opposed to be programmed condition.
Test Mode Yellow Flashes when the modem is in a test configuration.
Alarms
Transmit Yellow A transmit function is in an alarm condition.