Performance Verification Tests 4
Keysight 3458A Calibration Manual 77
4 Subtract the 1 Hz Unit Under Test Readings from the 1 Hz Frequency Standard
Value. Record the difference on the FREQUENCY TESTS Test Card.
5 Change the Frequency Standard to 10 MHz and record the exact Frequency
Standard Value on the FREQUENCY TESTS Test Card. Execute Trig, and record
the Unit Under Test Reading on the FREQUENCY TESTS Test Card.
6 Subtract the 10 MHz Unit Under Reading from the 10 MHz Frequency
Standard Value. Record the difference on the FREQUENCY TESTS Test Card.
7 If either of the differences are beyond the limits specified, the instrument
should be adjusted. See Chapter 3, “Adjustment Procedures” to make
adjustments.
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