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 196 of 240
Power
The backplane is provided with
voltages from connector CON2
on the dual redundant power to
PL1 on the backplane:
Voltage
(DC)
Tolerance PSU
NTX-A402
backplane
+24
.1
V
±0.3V
CON2
-
1
PL1
-
1
+15V
±0.4
V
CON2
-
2
PL1
-
2
-
15V
±0.4
V
CON2
-
3
PL1
-
3
+5.0V
±0.2V
CON2
-
4
PL1
-
4
0V
CON2
-
5
PL1
-
5
0V
CON2
-
6
PL1
-
6
The backplane generates the following supplies internally:
Voltage
Generated
from
D>=rf
(all green)
Test
point
Notes
+12V
+15V input No LED
No test
point
The +12V is used for the status and alarm panel and
can be measured at PL3 pin 5
+3.3V
±0.25V
+5.0V input LED D8 TP9 General use
+1.5V
±0.1V
+5.0V input LED D7 TP10 General use
+1.2V
±0.1V
+5.0V input LED D6 TP11 FPGA core supply
A +5.0V
Regulated
by +5.0V
+5.0V input No LED
No tests
point
This rail is derived from the +5.0V supply via a low
pass filter network and is used to power the video
switching circuitry
A -5.0V
±0.25V
-15V input LED D9 TP12
The A (analogue)-5V is also used to power the video
switching circuitry