Section 2: Performance verification
Model DMM7510 7½ Digit Graphical Sampling Multimeter Calibration Manual
2-56
DMM7510-905-01 Rev. A / April 2015
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
Example reading limit calculation
(on page 2-8)).
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 band
width 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.