
Chapter 4 Calibration Procedures
Optional Performance Verification Tests
Optional Performance Verification Tests
These tests are not intended to be performed with every calibration. They are provided as an aid for verifying additional instrument specifications.
Square Wave Duty Cycle Verification
This test verifies the duty cycle specification of the squarewave output.
Select each function generator output in the table below. Use an integrating DMM to measure the Vdc output of the function generator. Compare the measured results to the test limits shown in the table. This is a HIGH Z output termination test.
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Function | OUT 1 | Ampl | Freq | Duty | Nominal | Error | |
TERM | Cycle | ||||||
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Square wave | HIGH Z | 1.0 Vrms | 300.00 Hz | 50% | 0.00 Vdc | – 0.020 Vdc | |
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Square wave | HIGH Z | 1.0 Vrms | 300.00 Hz | 25% | - 0.50 Vdc | – 0.020 Vdc | |
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Square wave | HIGH Z | 1.0 Vrms | 300.00 Hz | 75% | + 0.50 Vdc | – 0.020 Vdc | |
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The DMM used for this test must be an integrating multimeter. If the first step does not measure 0 Vdc, use an oscilloscope for this test.
Do not use an
1Output termination set using front panel controls. HIGH Z assumes no load on output. 50W assumes a 50W – 0.1W load on output.
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