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 157 of 240
10.7.8.5 Test points
Test Point Description of test
+15V A
+15V PSU A onto the PCA
+15V B
+15V PSU B onto the PCA
+15V Board Derived
+15V combined DC supply to PCA
+5V
+5VDC
+28V
+28VDC
+1.5V
+1.5VDC
ACP U
A0
Enable connection of an oscilloscope between its
differential inputs to
monitor waveform.
ACP U
A1
Enable connection of an oscilloscope between its
differential inputs to monitor waveform.
ARP
Enable connection of an oscilloscope between its
differential inputs to monitor waveform.
Motor on
Test signal level input at the input to the board
Waveguide switch position A +28V
control
Test +28V output to the waveguide switch actuator.
Waveguide switch position B +28V
control
Test +28V output to the waveguide switch actuator.
Waveguide switch tellback position A
Test continuity of waveguide switch tellback signal
between the tellback position A signal and the tellback
switch common signal connections.
Waveguide switch tellback position B
Test continuity of waveguide switch tellback signal
between the tellback position B signal and the tellback
switch common signal connections.
Oil level
Test continuity of oil level switch between the two oil
level signal connections.
Oil temp
Test continuity of oil temp switch between the two oil
temp signal connections.
Encoder fail
Test voltage input
Polarisation tellback A
Test voltage input
Polarisation tellback B
Test voltage input
Polarisation tellback C
Test voltage input
Polarisation tellback D
Test voltage input
Motor on Tx A
Test signal voltage level at input, between +ve and ~ve
input.
Motor on Tx B
Test signal voltage level at input, between +ve and ~ve
input.