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CDM-570/570L Satellite Modem with Optional IP Module Revision 4
Front Panel Operation MN/CDM570L.IOM
6–2
Table 6-1. Front Panel LED Indicators
LED Color Condition
Red
A Unit Fault exists (Example: PSU fault)
Orange
No Unit Faults, but a Traffic Fault, or ODU (BUC or LNB) fault exists
Unit
Status
Green
No Unit Faults, or Traffic Faults
Green
No Tx Traffic Faults
Transmit
Traffic
Off
A Tx Traffic fault exists OR the Tx Carrier is in OFF state
Green
No Rx Traffic Faults (demod and Viterbi decoder are locked, everything is
OK)
Receive
Traffic
Off
An Rx Traffic fault exists (the demod may still be OK – check the fault
status of the unit from the Monitor menu).
Green
The Unit is On Line, and carrying traffic
On line
Off
The Unit is Off Line (standby) - forced by externally connected 1:1 or 1:N
redundancy system
Orange
There is a Stored Event in the log, which can be viewed from the front
panel, or retrieved via the remote control interface
Stored
Event
Off
There are no Stored Events
Orange
The Unit is in Remote Mode - local monitoring is possible, but no local
control
Off
The Unit is in Local Mode - remote monitoring is possible, but no remote
control
Remote
Flashing
ODU FSK control has been enabled, and there is a communications fault
Orange
Framing on, EDMAC on, and unit defined as Slave - local monitoring is
possible, but no local control
EDMAC
Mode
Off
Either the unit is in Transparent mode (no framing), or the framing has
been selected, but in AUPC-only mode, or EDMAC Master configuration
Orange
A Test Mode is selected (Example: IF Loopback)
Test Mode
Off
There is no Test Mode currently selected
IMPORTANT
In general, the Alarm relay state will reflect the state of the Front Panel LEDs. For instance,
if the Unit Status LED is red, the Unit Alarm relay will be active, etc. The one exception is
the Transmit Traffic relay. This will only be activated if a Transmit Traffic Fault exists – it
does not reflect the state of the TX carrier.