Ac Current Verification - Keithley DMM7510 Calibration Manual

Section 2: Performance verification

AC current verification

To check AC current accuracy, you will:
•
Apply accurate voltages from the Fluke 5720A or 5730A multifunction calibrator to the Model
DMM7510 front-panel terminals
•
Verify that the displayed readings fall within specified limits
Use the values in the following tables to verify the performance of the Model DMM7510. Actual values
depend on the published specifications (see
To verify AC current accuracy:
1. On the Model DMM7510, press the FUNCTION key and select AC Current.
2. Press the HOME key.
3. Select Range and set the range you are verifying.
4. Press the MENU key.
5. Select Settings.
6. Ensure that Detector Bandwidth is set to 30 Hz.
AC current is specified for the detector bandwidth setting of 3 Hz. 3 Hz measures accurately for input
signals from 3 Hz to 10 kHz, with reading rates of ≈0.5 readings/s. To improve verification throughput
to ≈3.3 readings/s, set detector bandwidth to 30 Hz for frequencies of 30 Hz to 10 kHz. To verify
frequencies 1 kHz and higher, set the detector bandwidth to 300 Hz for faster ≈55 readings/s
throughput.
7. Connect the Model DMM7510 to the calibrator as shown in the following figure.
8. Source AC currents for each of the frequencies listed in the following tables.
9. For each setting, be sure that the reading is within low and high limits.
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Model DMM7510 7½ Digit Graphical Sampling Multimeter Calibration Manual
Example reading limit calculation (on page 2-8)).
DMM7510-905-01 Rev. A / April 2015