1264C User Manual
Basic Functional
Check
The functional check consists of checking the 1264C power supply
voltages to the VXIbus limits at the P1 and P2 connectors using a
digital voltmeter.
Referring to
Tables 3-2 to 3-5
and
Figure 3-1
connect one lead of
the voltmeter to a supply pin. Connect the reference lead of the
voltmeter to one of the ground pins. Compare each voltage
reading to the values listed in
Tables 3-5
.
Table 3-5, Power Supply Voltages at the P1 and P2 Connectors
P1/P2
Measurement
Location (PIN)
Supply
VXI Acceptable
Voltage Range
P1-C32
+5V
4.875V to 5.25V
P1-A31
-12V
-12.6 to 11.64V
P2-C32
-24V
-25.2V to -23.28V
P2-C13
-2V
-2.1V to -1.9V
P1-C31
+12V
11.64V to 12.6V
P2-C31
+24V
23.28V to 25.2V
P2-C4
-5.2V
-5.46V to -5.044V
P1-C9, P2-C3
Logic Ground
If the voltages are within the specified ranges, the mainframe
complies with the VXI voltage limit specifications.
Note that the “Voltage Range” values in
Table 3-5
are identical to
the VXIbus Specification. The voltage range limits provided in
Table 3-1
refer to the voltage monitor indicators on the 1264C front
panel. The monitor will detect a voltage error when the limit is
exceeded (V
nominal
±
10% V
nominal
±
4% accuracy).
EADS North America Defense
Operating The 1264C 3-7
Test and Services, Inc. © 1998
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