Model DMM7510 7½ Digit Graphical Sampling Multimeter Calibration Manual
Section 2: Performance verification
DMM7510-905-01 Rev. A / April 2015
2-67
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
(on page 2-67).
9. Verify that the STATISTICS swipe screen reading for Average is within low and high limits.
Verify digitize current 10 A range
Description
Calibrator setpoint
(A)
Lower limit
Upper limit
UTT Zero
STANDBY
-3.50E-03
3.50E-03
Full scale (+)
10
9.00
1.01
Half scale (+)
5
4.00
5.00
Half scale (-)
-5
-5.00
-4.00
Full scale (-)
-10
-1.01
-9.00
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
Example reading limit calculation
(on page 2-8)).
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.