Model DMM7510 7½ Digit Multimeter User's Manual
Section 5: Measuring DC voltage with high accuracy
DMM7510-900-01 Rev. B / May 2015
5-3
High-accuracy DC voltage measurements
This application demonstrates how to use the Model DMM7510 to make a high-accuracy DC voltage
measurement. You can make the measurement from the front panel or over the remote interface
using SCPI code or TSP code. For information about setting up remote communications, see Remote
communications interfaces.
For this application, you will:
•
Restart the instrument.
•
Select the DC voltage function.
•
Set the integration rate to 10 power line cycles (PLCs). At 60 Hz line frequency, 10 PLCs provide
an aperture of 166.7 ms.
•
Turn on autozero. This enables the instrument to optimize the accuracy of readings by checking
reference measurements.
•
Enable a repeating filter with a count of 100. This reduces noise error because the results are
more stable when the measurements are averaged.
•
Generate readings from the front panel or the remote interface.
Using the front panel
Restart the instrument and select the function, integration rate, auto zero, and filter settings:
1. Press the
POWER
button on the front panel to turn on the instrument.
2. On the FUNCTIONS swipe screen, select
DCV
.
3. On the top half of the Home screen, select
Range
.
4. Select the
10V
range.
5. Swipe to the SETTINGS swipe screen.
6. Select
Rate
.
7. Set NPLC to
10
.
8. Select
OK
.
9. Select
Input Z
.
10. Set the input impedance to
Auto
.
11. Verify that Auto Zero is set to
On
.
12. Press the
MENU
key.
13. Under Measure, select
Calculations
.
14. Select Filter
Config
.
15. Set the Filter Type to
Repeat
.
16. Set the Filter Count to
100
.
17. Select
OK
.
18. Set the Filter to
On
.
19. Press the
HOME
key.
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