Thinning Out And Calculating Data - Hioki MEMORY HiCORDER MR8847-01 Instruction Manual

13.3.4 Thinning Out and Calculating Data

When performing FFT analysis of data measured using the memory function, the measurement
data can be thinned before calculation. If the sampling frequency is too high and the expected
results are not obtained, thin the data before calculation to increase the frequency resolution.
Procedure
To open the screen: Press the
1
Select the reference data.
Move the cursor to the
Memory].
2
Select the thinning amount.
Move the cursor to the
Select
Off Do not thin out.. (default setting)
1/10 Skip every 10 data points.
1/100 Skip every 100 data points.
1/1000 Skip every 1000 data points.
Original waveform

STATUS key [Status]
[Reference] item, and select
[Save Thin] item.
• The [Save Thin] setting can only be set when the
Memory].
• The range that can be set for thinning changes depending on the time axis
range measured by the memory function.
• The frequency range is automatically determined. This setting cannot be
changed.
• When thinning, aliasing occurs and waveforms that did not originally exist may
be observed. Make settings after sufficient consideration of the frequencies
included in waveforms.
13.3 Setting FFT Analysis Conditions
Thinned waveform
sheet
1
[From
2
[Reference]
221
13
is set to [From