3-12
IM WT5000-01EN
Line Filter (Line Filter)
There are two types of input filters, line filters and frequency filters.
Because the 1 MHz line filter is inserted as shown in the following figure, it affects normal measurement,
harmonic measurement, and frequency measurement (for details, see the block diagram in appendix 11 of the
Getting Started Guide, IM WT5000−03EN).
Voltage/
current input
Normal measurement
Harmonic measurement
Frequency measurement
Line filter
(1 MHz)
Frequency
filter
Line filter
(0.1 kHz to
100.0 kHz)
• You can set the line filter type by specifying Line Filter Type under line filter (Line Filter) in the input settings
(advanced/options).
• When Line Filter Advanced Settings under line filter (Line Filter) in the input settings (advanced/options) is
set to on, that filter function is enabled, and the settings explained in this section are disabled.
Turning the Line Filter On and Off (Line Filter)
When the line filter is turned on, measured values will not contain high frequency components. Thus, the voltage,
current, and power of inverter waveforms, strain waveforms, etc., can be measured with their high frequency
components eliminated.
Turning it off disables the line filter.
When the line filter is turned on, the accuracy and the upper limit of the measurement band change. For details,
see sections 6.15 and 6.16 in the Getting Started Guide, IM WT5000−03EN.
Cutoff Frequency (CutOff)
Set the cutoff frequency in the following range.
0.1 kHz to 100.0 kHz (in 0.1 kHz steps), 1 MHz
The line filter functions as shown in the above figure according to the set frequency.
The line filter setting (off, or the cutoff frequency when set to on) is shown on the Elements tab of the input
information area.
3 Input Settings (Basic Measurement Conditions)
