Keithley 3720

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")