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CyScan Positioning System • Installation and Maintenance Guide r1.1
GCS
GCS
Red
Yellow
Green
Leveller diagnostic
Embedded PC status
Main heartbeat
CyScan LED Indicators
To provide instant status information, the CyScan sensor features three LED indicators
mounted beneath the carrying handle at the Stern side. Each indicator displays the
current status of three key elements of the sensor circuitry:
Correct startup indication
As the CyScan sensor initialises itself, the following sequence should be seen:
Red
Flashes once briefly when power is applied and should then be off for as
long as the yellow LED is on. As soon as the yellow LED has turned off, it
will toggle at one second intervals as the leveller circuitry initialises for about
30 seconds. After the initialisation period, the Red indicator should switch
off and stay off. If at any point it stays on permanently then a hardware
fault has been detected.
Yellow
On continuously after power has been applied while the embedded PC
circuitry initialises. After the initialisation period, the Yellow indicator should
switch off and stay off. It will come on again once the system has been
shutdown or in case of an embedded PC failure.
Green
Toggles twice a second after power is applied and while the yellow led is on. As
soon as the yellow led switches off and the leveller initialises (RED led toggles),
the green led will begin to flash at 10 Hz intervals giving the main system
heartbeat. When the system is suspended it flashes briefly once a second.
Error states and possible causes
Red
Permanently on at any point - Electronic hardware failure within the leveller
or sensor circuitry. Can also come on when a hardware failure is detected
during operation.
Yellow
On after the initialisation period is complete - Embedded PC failure or unit is
shut down. Communication with the sensor is not possible. Recycle power
to the CyScan system.
Green
Permanently on or off - No heartbeat to the system. No operation is possi-
ble. Recycle power to the CyScan system.
Blinking slowly - unit suspended or shutdown (see YELLLOW and RED leds).
Toggling twice a second - after power has been applied, waiting for the PC
to initialise and the yellow LED to turn off.
Shutdown/suspend
Red
Off unless there is a hardware failure.
Yellow
On for shutdown, Off for suspend.
Green
Flashes briefly once a second.