Mocomtech CDM-QX - Manual (Page 68)

CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7
Front Panel Operation MN/CDMQX.IOM
5–2
5.1.2 LED Indicators
IMPORTANT
In general, the Alarm relay state will reflect the state of the
Front Panel LEDs. For example, 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
Red A Unit Fault exists (Example: PSU fault)
Green No Unit Faults
Note: Unit fault does not include Tx or Rx fault.
Transmit
Traffic
Green No Tx Traffic Faults
Off A Tx Traffic fault exists or the Tx Carrier is in OFF state
Note: This LED corresponds to the selected slot, example <TX>.
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 – check the
fault status of the unit from the Monitor menu).
Note: This LED corresponds to the selected slot, example <RX>.
Online
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
Note: This LED corresponds to the selected slot, example <RX>.
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
Off
The Unit is in Local Mode - remote monitoring is possible, but no
remote control
Flashing
ODU FSK control has been enabled, and there is a
communications fault.
EDMAC Mode
Orange
Framing on, EDMAC on, and unit defined as Slave - local
monitoring is possible, but no local control
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.
Test Mode
Orange
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.
Off
There is no Test Mode currently selected, BERT Generator is off,
BERT Monitor is off, and spectrum Analyzer is off.