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65
Configuring Measuring-Module-Specific Settings
Configuring Model U8991 Digital Voltmeter Unit settings
> [Channel] > [U8991]
to
1
4
1
Click the area that includes
[Notch frequency]
.
The setting dialog box appears.
2
Click the
[Notch frequency]
box, and then choose a power frequency from the list.
Choose a power frequency of your region.
50 Hz
Sets the period at 20 ms.
60 Hz
Sets the period at 16.67 ms.
An incorrect power frequency setting causes measured values to be unstable.
3
Click the
[NLPC]
box, and then enter an integration time.
Define an integration time based on the power line cycle (PLC), which is the time equivalent to one period of
the power frequency.
1
,
10
,
100
Example: When the power frequency is 50 Hz and NPLC is set at 10, then 20 ms × 10 = 200 ms is obtained.
The instrument updates measured data every 200 ms.
(Increasing NPLC may reduce fluctuation in measured values caused due to exogenous noise or an EMC
environment.
4
Click the
[Response]
box, and then choose a data update interval from the list.
Off
Updates data at intervals the time entered in the
[NPLC]
box.
On
Calculates moving averages every 1 PLC and updates the data.
5
Click
[Close]
.
The setting dialog box closes.
3
Advanced Functions
Summary of Contents for MR8740-50
Page 2: ......
Page 6: ...Contents iv...
Page 40: ...34 Enlarging a Part of the Waveform Zoom Function...
Page 86: ...80 Configuring Generator Module Specific Settings...
Page 128: ...122 Automatically Specifying the Trigger Level Auto trigger Level...
Page 164: ...158 Numerical Calculation Types and Descriptions...
Page 182: ...176 Displaying Waveforms...
Page 186: ...180...
Page 214: ...208 Operating the Instrument With a Browser Installed in a Computer...
Page 224: ...218 External Sampling EXT SMPL...
Page 232: ...226 Information for Reference Purposes...
Page 236: ...230 Index...
Page 237: ......
Page 238: ......