20
Chapter 3 ● LEDS
1040967-0001 Revision A
Table 2: Modem status LEDs
LEDS
Appearance
Status
LAN
On
Satellite modem is connected to a computer network card or
Ethernet device.
Blinking
Transmitting and/or receiving data.
Off*
No device is connected to the LAN port, or the device
connected to the LAN port is not working properly.
Transmit
On
OK - Transmit path is operational.
Blinking, mostly on
Transmitting data.
Blinking, mostly off
Ranging (The modem is measuring the distance to the satellite
to calibrate transmit timing and transmit power.)
Off*
Condition preventing transmission.
Receive
ON
OK - Receive path is operational.
Blinking
Receiving data.
Off*
Condition preventing receipt of data.
System
ON
Connection established with the NOC.
Off
Condition preventing full operation.
Power
ON
Red color**
Power is on, and the modem is functioning normally.
**Indicates alarm condition.
Flashing
Operating with fallback.bin (backup) version of software.
Off*
No power.
Bold type
indicates LED appearance during normal operation when the satellite modem is transmitting or
receiving data.
*Indicates an operational problem.
LAN port LEDs
The LEDs on the LAN (Ethernet) port on the modem's rear panel indicate link status
and speed, as shown in
Figure 16
.
Figure 16: LAN port LEDS