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Chapter 3: Service
Calibration Testing Procedures
To test input resistance
This test checks the input resistance of the active probe.
Specification: 100 kΩ 1%
Equipment Required
Equipment
Digital Multimeter
1 Connect the DMM between the probe tip and the ground shell at the
front of the probe.
2 Set up the DMM to measure resistance.
The resistance should read 100 kΩ 1KΩ.
3 Record the reading in the "Calibration Test Record" on page 47.
If the test fails
Go to the "Troubleshooting and Repair" section in this chapter.
42
Critical Specification
Resistance 0.1%
Recommended
Model/Part
3458A
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