Performance Verification

Use the performance verification tests in this section to verify the measurement performance of the instrument using the instrument’s specifications listed in the product data sheet.

You can perform three different levels of performance verification tests:

• Self–Test (two types): Internal verification tests that give a high confidence that the instrument is operational, as described here.
• Quick Verification: A combination of the internal self–tests and selected verification tests.
• Performance Verification Tests: An extensive set of tests that are recommended as an acceptance test when you first receive the instrument or after performing calibration:

  • Zero Offset Verification

  • DC Volts and DC Current Gain Verification

  • Frequency Accuracy Verification

  • AC Voltage and AC Current Verification

  • High Current Verification

  • Capacitance Verification (Optional Verification Test)

Quick Performance Check

The quick performance check is a combination of internal self–test and an abbreviated performance test (specified by the letter Q in the performance verification tests). This provides a simple method to achieve high confidence in the instrument’s ability to functionally operate and meet specifications. These tests represent the absolute minimum set of performance checks recommended following any service activity. Auditing the instrument’s performance for the quick check points (designated by a Q) verifies performance for "normal" accuracy drift mechanisms. This test does not check for abnormal component failures.

To perform the quick performance check, do the following:

• Perform a self–test.
• Perform only the performance verification tests indicated with the letter Q.

If the instrument fails the quick performance check, calibration or repair is required.

The Quick Performance Check can be limited by the factors described in the following section (Performance Verification Tests).

Performance Verification Tests

The performance verification tests are recommended as acceptance tests when you first receive the instrument. The acceptance test results should be compared against the 90 day test limits. You should use the 24 hour test limits only for verification within 24 hours after performing the calibration adjustment procedure.

If a Fluke 5725A Calibrator is not available, current verification can be limited to 2A. This will limit the span of verification on the 10A ranges to only 2A.

If the instrument fails performance verification, calibration adjustment or repair is required.

To reset the date used to determine the specifications versus time, a calibration with adjustment is required.

The allowable errors for verification are the published specifications (see the instrument data sheet at www.keysight.com/find/truevolt-doc). The periods in the published specifications are since the last full calibration adjustment.

Recommended Test Equipment

The recommended test equipment for the performance verification and calibration is listed below. If the exact instrument is not available, substitute calibration standards of equivalent accuracy.

An alternate method is to use the Keysight 3458A 8½-digit Digital Multimeter to measure less accurate, yet stable, sources. The output value measured from the source can be entered into the instrument as the target calibration value.

Application	Recommended Equipment
Zero Calibration	Keysight 34172B
DC Voltage	Fluke 5720A
DC Current	Fluke 5720A
Resistance	Fluke 5720A
AC Voltage	Fluke 5720A
AC Current	Fluke 5720A
Frequency	Keysight 33500B Series Function/Arbitrary Waveform Generator
High Current	Fluke 5725A
Capacitance (Optional)	SCA-1uF Capacitance Standard