CDM-625 Advanced Satellite Modem
Revision 1
Front Panel Operation
MN-0000036 (Ref MN/CDM625.IOM)
5.1.1
Front Panel LED Indicators
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.
The function of the eight front panel LED indicators is as follows:
LED
Condition
Unit
Status
Green
No Unit Faults, or Traffic Faults
Orange
No Unit Faults, but a Traffic Fault exists
Red
A Unit Fault exists (Example: PSU fault)
Transmit
Traffic
Green
No Tx Traffic Faults
Off
A Tx Traffic fault exists OR the Tx Carrier is in OFF state
Receive
Traffic
Green
No Rx Traffic Faults (demod and Viterbi decoder are locked, everything is OK)
Off
An Rx Traffic fault exists (the demod may still be OK)
On line
Green
The Unit is On Line, and carrying traffic
Off
The Unit is Off Line (standby) - forced by externally connected 1:1 or 1:N
redundancy system
Stored
Event
Orange
There is a Stored Event in the log, which can be viewed from the front panel, or
retrieved via the remote control interface
Off
There are no Stored Events
Remote
Orange
The Unit is in Remote Mode - local monitoring is possible, but no local control
Flashing
ODU control has been enabled, and there is a communications fault, or there is a
ODU status fault
Off
The Unit is in Local Mode - remote monitoring is possible, but no remote control
EDMAC
Mode
Orange
Framing on, EDMAC on, and unit defined as Slave - local monitoring is possible,
but no local control
Off
Either no EDMAC, EDMAC Master, or Transparent mode is selected
Test
Mode
Orange
A Test Mode is selected (Example: IF Loopback)
Off
There is no Test Mode currently selected
5–2
