Keysight 1143A, User'S And Service Manual

Page: 26 / 56

To test output voltages
This test checks the output voltages of the supply. The voltage requirement
is not a specification, but is checked to assure proper operation of the
probes.
Requirement:
+
17.3 Vdc
±
500 mV and
−
17.3 Vdc
±
500 mV
Equipment Required
Equipment Critical Specification Recommended
Model/Part
Digital Multimeter Better than 0.1% accuracy 3458A
Use the drawing below to locate the correct pins of the probe power
connectors. Either connector can be measured to check the voltage
accuracy. Both can be measured to assure both connectors have power.
Probe Power Output Connector
1
Connect the mains power to the power module and turn the
front-panel power switch on.
2
Measure the voltage between ground and pin 1 of the connector. It
should be
+
17.3 Vdc,
±
500 mV.
3
Measure the voltage between ground and pin 2 of the connector. It
should be
−
17.3 Vdc,
±
500 mV.
If the test fails
The supplies may need adjustment. Go to the "Making Adjustments" section in
this chapter.
Pin 1 +17.3
Pin 3 GND
Pin 2
−
17.3
Figure 4
Service
Testing Performance
26