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Appendix B: Verification and adjustment Series 3700A System Switch/Multimeter Reference Manual

B-32 3700AS-901-01 Rev. D/June 2018

Frequency adjustment

Make the connections as shown below, then perform the following adjustment steps (AC adjustment

step 17 and step 18):

Figure 177: Low frequency calibration

AC adjustment step 17: 1 V at 10 Hz (factory calibration only)

1. Send the commands:

dmm.func = dmm.AC_VOLTS

dmm.range = 1

2. Source 1 V at 10 Hz.

3. Send the command:

dmm.calibration.ac(17,1) print("done")

AC adjustment step 18: 1 V at 1 kHz (factory calibration only)

Figure 178: Frequency verification

1. Source 1 V at 1 kHz.

2. Send the command:

dmm.calibration.ac(18,1000) print("done")

Keithley 3720 Reference Manual

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