Mocomtech CDM-QX operation manual Front Panel LED Indicators, Led, Color Condition

CDM-Qx Satellite Modem	Revision 5
Front Panel Operation	MN/CDMQx.IOM

On most menu screens, the user will observe a flashing solid block cursor, which blinks at a once-per-second rate. This indicates the currently selected item, digit, or field. Where this solid block cursor would obscure the item being edited (for example, a numeric field) the cursor will automatically change 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 will activate 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 will restore the previous screen. The behavior of the front panel LEDs is described below in Table 5-1.

			Table 5-1. Front Panel LED Indicators
LED	Color		Condition
Unit	Red		A Unit Fault exists (Example: PSU fault)
	Green		No Unit Faults
Status
			Note: Unit fault does not include Tx or Rx fault.
Transmit	Green		No Tx Traffic Faults
	Off	A Tx Traffic fault exists or the Tx Carrier is in OFF state
Traffic
			Note: This LED corresponds to the selected slot, example <TX>.
Receive	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
Traffic			unit from the Monitor menu).
			Note: This LED corresponds to the selected slot, example <RX>.
	Green		The Unit is On Line, and carrying traffic
Online	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>.
	Orange		There is a Stored Event in the log, which can be viewed from the front panel, or
Stored Event			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.
	Orange		Framing on, EDMAC on, and unit defined as Slave - local monitoring is possible,
EDMAC Mode			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.
	Orange		A Test Mode is selected (example: IF Loopback), or BERT Generator is turned on,
Test Mode			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.

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

IMPORTANT reflect the state of the TX carrier.

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