Keithley 2000, Calibration Manual, Page: 17 / 88

Verifying AC voltage
Check AC voltage accuracy by applying accurate AC voltages at specific frequencies from
the calibrator to the Model 2000 inputs and verifying that the display reads within specified lim-
its.
CAUTION Do not exceed 1000 V peak between INPUT HI and INPUT LO, or 8
×
10
7
V•Hz input, because instrument damage may occur.
Follow these steps to verify AC voltage accuracy:
1. Connect the Model 2000 HI and LO INPUT jacks to the AC voltage calibrator as shown
in Figure 1-2.
2. Select the AC volts function by pressing the ACV key.
3. Set the Model 2000 for the 100mV range; make sure that REL is disabled.
4. Source 1kHz and 50kHz AC voltages for each of the ranges summarized in Table 1-3,
and make sure that the respective Model 2000 readings fall within stated limits.
2000 MULTIMETER
!
R
5700A Calibrator (Output AC Voltage)
5725 Amplifier (Connect to calibrator)
Input HI
Output HI
Input
LO
Output
LO
Shielded cable
Model 2000
Note: Amplifier required only
for 700V, 50kHz output.
1-8 Performance Verification
Figure 1-2
Connections for
AC volts verifica-
tion