DMM6500 6½-Digit Multimeter with Scanning Calibration and Adjustment Manual
Section 2: Performance verification
DMM6500-905-01 Rev. E June 2021
2-17
Frequency verification
To verify frequency accuracy, you will:
•
Apply accurate frequencies from the function generator to the terminals on the front panel of the
DMM6500.
•
Verify that the displayed readings are within specified limits.
Use the values in the table following the steps below to verify the performance of the DMM6500.
Actual values depend on the published specifications (see
Example reading limit calculation
1. Connect the Keithley Instruments Model 3390 function generator to the DMM6500 INPUT HI and
LO terminals as shown in the following figure.
Figure 5: Connections for frequency verification and adjustment
2. On the DMM6500, press the
FUNCTION
key, select the
Measure Functions
tab, and select
Frequency
.
3. Select the
MENU
key.
4. Under Measure, select
Settings
.
5. Set the Aperture to
250 ms
.
6. Set the Threshold Range to
10 V
.
7. Press the
HOME
key.
8. Source the voltage and frequency values as listed in
(on page 2-18). For
each setting, be sure that the reading is within low and high limits.
Summary of Contents for KEITHLEY DMM6500
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