Agilent Technologies 45A, 46A, 54835A manual Test Interval Dependencies, See Also

Testing Performance

The procedures in this section test measurement performance using Performance Specifications given in chapter 1 as performance standards. Specifications applicable to individual tests are noted at the test for reference.

Testing Interval

The performance test procedures may be performed for incoming inspection of the instrument and should be performed periodically thereafter to ensure and maintain peak performance. The recommended test interval is yearly or every 2,000 hours of operation.

Test Interval Dependencies

The test interval depends on frequency and severity of use and the environmental conditions under which the instrument is used. In recording test results, you may find that the test interval could be shortened or lengthened; however, such a decision should be based on substantial quantitative data.

See Also Chapter 4, “Calibrating and Adjusting,” for information about the calibration cycle.

Equipment Required

A complete list of equipment required for the performance tests is in the Recommended Test Equipment table in chapter 1. Equipment required for individual tests is listed in the test. Any equipment satisfying the critical specifications listed may be substituted for the recommended model. The procedures are based on the model or part number recommended.

Self-Test Verification

To verify system operation with high confidence, without the test equipment and time required for performance tests, perform the self-tests. These internal tests verify many functions of the oscilloscope.

To run the self-tests, enable the graphical interface, then select Self Test from the Utilities menu. The Self Test drop down list box allows you to select Scope Self Tests, Key and Knob Test, or LED Test. A message is displayed with the instruction to remove all inputs to the instrument. During execution of the self-tests, the oscilloscope displays diagnostic messages indicating the status of each test.

If one of the self-tests fails, FAILED is displayed rather than PASSED, and a 16-bit diagnostic code is displayed. This code is used by factory service personnel when troubleshooting the main assembly. Failure of a self-test indicates an assembly failure. The assembly must be replaced before you attempt performance verification. For more troubleshooting information, refer to chapter 5, “Troubleshooting.”

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