Specifications; Performance Test Procedures; To Test The De Calibrator - HP 54520 Series Service Manual

CAUTION
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Chapter 3: Testing Performance
To test the de Calibrator
Specifications
The specifications that apply to a particular test are given at the test. The
specification as given at the test may be abbreviated for clarity. In case of any
questions, refer to the complete specifications and characteristics in chapter 1,
"General Information."
Performance Test Procedures
Performance test procedures start with the next paragraph. Procedures may be done
individually and in any order.
Allow the instrument to warm up for at least 30 minutes prior to beginning performance
tests. Failure to allow warm-up may cause the instrument to fail tests.
To test the dc Calibrator
The DC CALIBRATOR output on the rear panel is used for self-calibration and probe
calibration. Though calibrator accuracy is not specified in the performance specifications, it
must be within limits in order to provide accurate self-calibration.
Test Limits 5.000 V +10 mV
Equipment Required
Equipment Critical Specifications Recommended
Model/Part
Digital Multimeter 0.1 mV resolution, better than 0.1% accuracy HP 34401A
Cable BNC HP 105034
Adapter BNC (f) to banana {m) HP 1251-2277
Procedure
Connect the multimeter to the rear panel DC CALIBRATOR output.
Press utility then service menu, then press cal select to select
cal select 1(1.DC CAL BNC verify)
Press dac output to select 0 volt. The DVM should read close to 0.0000 V.
Record the reading to four decimal places. V1 =
Press dac output toselect 5 volt. The DVM should reall near 5.000 V. V2 =
Subtract V1 from V2. The difference should be between 4.990 and 5.010 V.
Record the results of step 6 in the Performance Test Record.
Press exit menu.
If the test fails
Repair is necessary. See chapter 5, "Troubleshooting."
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