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 156 of 240
Waveguide switch selector: (Dual transceiver systems only) Two +28V outputs provided for the
waveguide switch control. One output will cause the waveguide switch to set to
transmitter A, and the other sets the waveguide switch to transmitter B. The default
position is transceiver A. The selector switch defaults to the A position if there is a
fault in the communications to the PCA.
Waveguide switch tellback: (Dual transceiver systems only) The current position of the waveguide
switch is sensed and reported back to the RDU.
Motor on: Two motor ON signal inputs are monitored, one from each of the transceivers. Each
has a signal level of 15V DC when the motor is on, and 0V when the motor is off. The
status of the motor used to indicate which transceiver is running but does not control
the motor ON/ OFF function.
Blanking: Two blanking inputs are to be received by the card. A blanking input is received for
each transceiver via a 75 SMB connection.
ACP/ARP: The Azimuth Clock Pulse (ACP) and Azimuth Reset Pulse (ARP) are distributed from
the encoder to both SharpEye
TM
transceivers, the signals are also transmitted to the
RDU. The signals are not amplified and continue to operate in the event of a power
failure on the board.
Power fan sensing: Inputs receive, monitor and report the outputs (RPM) of the optional forced air
fans.
10.7.8.4 Indicators
LED Colour LED status
+15V Input A (input from PSU A)
Green
ON: +15V input ON
OFF: +15V input OFF
+15V Input B (input from PSU B)
Green
ON: +15V input ON
OFF: +15V input OFF
+15V (PCA power on)
Green
ON: +15V OK
OFF: +15V OFF
+5V (Generated on PCA)
Green
ON: +5V PSU OK
OFF: +5V PSU Off
+1.5V (Generated on PCA)
Green
ON: +1.5V PSU OK
OFF: +1.5V PSU Off
+28V (Generated on PCA)
Green
ON: +28V PSU OK
OFF: 28V PSU Off
Motor on Tx A
Red
ON: Motor On (Tx A)
OFF: Motor OFF
Motor on Tx B
Red
ON: Motor On (Tx B)
OFF: Motor OFF
Waveguide switch tellback position
2 x Red
A ON: Waveguide switch in position A Waveguide B ON:
Waveguide switch in position B
Both OFF: Waveguide switch in transition position
Oil level
Red
ON: Oil level OK
OFF: Oil level low
Oil temp
Red
ON: Oil temp OK
OFF: Oil temp high
Encoder fail
Red
ON: Encoder OK
OFF: Encoder fail
Polarisation HP/VP tellback
Bi-Colour
RED ON: Waveguide switch in horizontal position
Green ON: Waveguide switch in vertical position
Both OFF:
Waveguide switch i
n transition position
Polarisation Circular tellback
Bi-Colour
Red ON: Waveguide switch in CW position
Green ON: Waveguide switch in ACW position
Both OFF: Waveguide switch in transition position
Optional Fan tellback
Red
ON: All fan speeds OK
OFF: One or more fan speed fail