Comtech EF Data CDM-625 - Manual (Page 102)

CDM-625 Advanced Satellite Modem Revision 15
Front Panel Operation MN-CDM625
5–2
5.1.1 LED Indicators
In general, the Alarm relay state reflects the state of
the Front Panel LEDs. For example, if the Unit Status
LED is red, the Unit Alarm relay is active, etc. The
sole exception is the Transmit Traffic relay – it does
not reflect the state of the Tx carrier; it activates
only if a Transmit Traffic Fault exists.
The function of the eight front panel LED indicators is as follows:
LED State Function
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).
Tx (Transmit)
TRAFFIC
Green No Tx Traffic Faults.
Off A Tx Traffic fault exists OR the Tx Carrier is in OFF state.
Rx (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).
ONLINE
Green The Unit is Online and carrying traffic.
Off
The Unit is Offline (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
an 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 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.