Ac Current 10 A Verification - Keithley DMM7510 Calibration Manual

Model DMM7510 7½ Digit Graphical Sampling Multimeter Calibration Manual
Verify the Model DMM7510 zero:
1. On the calibrator, select the OPR/STBY key. Ensure that the front panel displays STANDBY.
2. Verify the Model DMM7510 Zero reading for each range.
Rel the system:
1. On the calibrator, select the OPR/STBY key. Ensure that the front panel displays OPERATE.
2. Enable the calibrator Amplifier and select the BOOST key.
3. On the calibrator, set the amplifier range lock ON.
4. Set the calibrator output to 0.00000 ADC and allow the reading to settle.
5. Press the MENU key.
6. Select Calculations.
7. Select Rel and Acquire.
8. Source positive and negative full-scale and half-scale currents, as listed in
10 A range
9. Verify that the STATISTICS swipe screen reading for Average is within low and high limits.
Verify digitize current 10 A range
Description
UTT Zero
Full scale (+)
Half scale (+)
Half scale (-)
Full scale (-)

AC current 10 A verification

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 the AC current accuracy:
1. Set the TERMINALS switch to REAR. Ensure that the orange R is displayed.
2. Press the FUNCTION key, select the Measure Functions tab, and select AC Current.
3. Press the HOME key.
4. Set the Range to 10A.
5. Press the MENU key.
6. Select Settings.
7. 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.
8. Connect the Model DMM7510 to the calibrator and amplifier as shown in the following figure.
DMM7510-905-01 Rev. A / April 2015
(on page 2-67).
Calibrator setpoint
(A)
STANDBY
10
5
-5
-10
Lower limit Upper limit
-3.50E-03 3.50E-03
9.98150E+00 1.00185E+01
4.98900E+00 5.01100E+00
-5.01100E+00 -4.98900E+00
-1.00185E+01 -9.98150E+00
Example reading limit calculation
Section 2: Performance verification
Verify digitize current
(on page 2-8)).
2-67