Table 5-1. Front Panel Led Indicators - Comtech EF Data CDM-Qx Installation And Operation Manual

CDM-Qx Satellite Modem
Front Panel Operation
this solid block cursor would obscure the item being edited (for example, a numeric field)
the cursor automatically changes to an underline cursor.
If the user were to display the same screen for weeks at a time, the display could become
'burnt' with this image. To prevent this, the unit has a 'screen saver' feature that activates
after 1 hour. The top line of the display will show the Circuit ID (which can be entered by
the user) and the bottom line will show the circuit Eb/No value (if there is a demod and it
is locked) followed by 'Press any key....'. The message moves from right to left across
the screen, then wraps around. If there are multiple circuits, their messages and Eb/No's
will be displayed sequentially. Pressing any key restores the previous screen. The
behavior of the front panel LEDs is described below in Table 5-1.
LED Color
Red
Unit
Green
Status
Green
Transmit
Off
Traffic
Green
Receive
Off
Traffic
Green
Online
Off
Orange
Stored Event
Off
Orange
Remote
Off
Flashing
Orange
EDMAC Mode
Off
Orange
Test Mode
Off
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.
IMPORTANT

Table 5-1. Front Panel LED Indicators

Condition
A Unit Fault exists (Example: PSU fault)
No Unit Faults
Note: Unit fault does not include Tx or Rx fault.
No Tx Traffic Faults
A Tx Traffic fault exists or the Tx Carrier is in OFF state
Note: This LED corresponds to the selected slot, example <TX>.
No Rx Traffic Faults (demod and Viterbi decoder are locked, everything is OK)
An Rx Traffic fault exists (the demod may still be OK – check the fault status of the
unit from the Monitor menu).
Note: This LED corresponds to the selected slot, example <RX>.
The Unit is On Line, and carrying traffic
The Unit is Off Line (standby) - forced by externally connected 1:1 or 1:N
redundancy system
Note: This LED corresponds to the selected slot, example <RX>.
There is a Stored Event in the log, which can be viewed from the front panel, or
retrieved via the remote control interface
There are no Stored Events
The Unit is in Remote Mode - local monitoring is possible, but no local control
The Unit is in Local Mode - remote monitoring is possible, but no remote control
ODU FSK control has been enabled, and there is a communications fault.
Framing on, EDMAC on, and unit defined as Slave - local monitoring is possible,
but no local control
Either the unit is in Transparent mode (no framing), or the framing has been
selected, but in AUPC-only mode, or EDMAC Master configuration.
A Test Mode is selected (example: IF Loopback), or BERT Generator is turned on,
or BERT Monitor is turned on, or Spectrum Analyzer is turned on.
There is no Test Mode currently selected, BERT Generator is off, BERT Monitor is
off, and spectrum Analyzer is off.
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Revision 6
MN/CDMQx.IOM