Hioki MR8740-50, Инструкция по эксплуатации

Страница: 63 / 238

57
Configuring Measuring-Module-Specific Settings
Configuring Model MR8990 Digital Voltmeter Unit settings
> [Channel] > [MR8990]
to
1
5
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.
0.1 to 0.9 , 1

to 10 , 20 , 30 , 40 , 50 , 60 , 70 , 80 , 90 , 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.
Data can be updated at high speed.
Off  Updates data at intervals or input the integration time entered in the [NPLC] box.
On Updates the data at high speed by calculating moving averages.
• Updates data at intervals of 0.1 PLC when NPLC is set at 9 or less.
• Updates data at intervals of 1 PLC when NPLC is set at 10 or more.
3
Advanced Functions