1269 User Manual
Operating The 1269 3-14
Basic Functional
Check
The functional check consists of checking the 1269 power
supply voltages to the VXIbus limits at rear panel connector
J415 using a digital voltmeter.
Referring to
Table 3-10
connect one lead of the voltmeter to a
supply pin at J415. Connect the reference lead of the voltmeter
to one of the ground pins. Compare each voltage reading to
the values listed in
Tables 3-10.
Table 3-10, Power Supply Voltages at J415
J415 Pin
Supply
VXI Acceptable
Voltage Range
3
+5V
4.875V to 5.25V
10
-12V
-12.6 to 11.64V
1
-24V
-25.2V to -23.28V
12
-2V
-2.1V to -1.9V
2
+12V
11.64V to 12.6V
9
+24V
23.28V to 25.2V
4
-5.2V
-5.46V to -5.044V
7,11
Logic Ground
If the voltages are within the specified ranges, the mainframe
complies with VXI voltage limit specifications.
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