User's Manual

SBS-900 Shore Based Radar Systems
Chapter 10: Corrective maintenance
KH-1602-2 issue 1: Standard SBS900 Systems Operator & Maintenance Handbook
Page 224 of 240
10.9 Alert messages
The following table lists the alarms that may be displayed on the LCD front panel of the Radar
Distribution Unit.
Alarm conditions can relate to individual equipment performance or be to report an issue with an
external input. An alarm on the system does not necessarily indicate a fault condition; the alarm may
be generated to alter the operator to a loss of signal, security switch status or an issue with the
system power.
RDU LCD
Message
System status Description
Air Dryer
Information warning only; no change
in system performance.
This is an indication of low pressure and/ or high
humidity in waveguide.
Antenna Platform
Open
Information warning only; no change
in system performance.
The antenna Platform switch is open.
ARP/HL not
detected
Message received from SharpEye
TM
processor.
Antenna rotation and system
transmission will have stopped.
If an azimuth or heading line (HL) pulse is not
detected by the SharpEye
TM
processor, a
message is sent to the transceiver and for safety
reasons transmission is stopped within 60
seconds.
Azimuth status (1)
Message received from SharpEye
TM
processor.
Antenna rotation and system
transmission will stop.
Antenna rotation is checked for clockwise rotation
(viewed from above). If anti-clockwise rotation is
detected, a message is sent and transmission is
stopped within 60 seconds.
Azimuth status (2)
Message received from SharpEye
TM
processor.
Antenna rotation and system
transmission will stop.
If missing pulses between heading lines are
detected, a message is sent and transmission is
stopped within 60 seconds.
Communication
Failure
The system will continue to operate
in its last configuration but cannot
be controlled.
Caution: The software Emergency
Stop function is disabled.
Communication has been lost with the track
extractor, command & display system or service
display. The system continues operation until
control is restored or the system is manually
switched to Local control.
Caution: When communication to the RDU is
lost, the Emergency Stop function on the track
extractor, command & display system or service
display will NOT function.
FPGA2 failed
Message received from SharpEye
TM
processor.
Antenna rotation and system
transmission will have stopped.
If the transceiver detects a hardware fault, it
sends a warning message to the display
equipment and switches to the Degraded state of
operation.
Hut Door Open
Information warning only; no change
in system performance.
The hut door switch is open.
Oil level low
Information warning only; no change
in system performance.
The oil level in the CHL antenna gearbox is low
and should be inspected at the earliest safe
opportunity.