Comtech EF Data CDM-600/600L - Manual (Page 78)

CDM-600/600L Open Network Satellite Modem Revision 3
Front Panel Operation MN/CDM600L.IOM
5–2
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 DESCRIPTION
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
Flashing
CDM-600L ONLY: On/Off once per second. The carrier-on delay is active.
Refer to ODU, BUC, Config menu for setting countdown seconds remaining.
It also is indicated via the Remote Command: TXO?; response: TXO=4,
which means, OFF due to BUC carrier-on-delay.
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
CDM-600 ONLY: 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 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