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4.3 STATUS Settings (FFT)
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4.3.9 Setting the Averaging Function
Function
display
Meaning
: Disable averaging
: Perform time axis waveform simple averaging
: Perform time axis waveform exponential
averaging
: Perform frequency axis waveform simple
averaging
: Perform frequency axis waveform exponential
averaging
: Frequency axis waveform peak hold
Function
display
Meaning
: Move the cursor up in the selection window.
: Move the cursor down in the selection window.
The averaging function allows capturing several instances of a waveform and
determining the average.
This makes it possible to eliminate noise and irregular signal components.
Averaging for the time axis waveform and frequency axis waveform can be
selected.
Procedure
Screen: STATUS, Waveform display
1. Use the Menu keys to display the desired screen.
2. Move the flashing cursor to the
Averaging
item.
3. Use the function keys to make a setting.
4. Move the flashing cursor to the
Number
item, and set the time of averaging
count by using the Jog/Shuttle controls or function keys.
Time axis waveform averaging
(1) Averages collected waveform data
(2) FFT processing is then performed on the averaged values
When the trigger mode is AUTO
When the
START
key is pressed, data are captured even if trigger conditions
are not fulfilled after a certain interval. If averaging is applied to
unsynchronized input signals, the result will be meaningless.
Frequency axis waveform averaging
Unlike time axis averaging, the results are valid also if no trigger
synchronization is used. But if the characteristics of the input waveform
allow triggering, using the trigger for synchronization is recommended.
(1) Captured data first undergo FFT processing.
(2) Averaging is performed and the result is displayed.
Содержание MEMORY HiCORDER 8855
Страница 2: ......
Страница 20: ...xii Chapter Summary...
Страница 21: ...1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 A Chapter 1 Product Overview...
Страница 28: ...8 1 2 Identification of Controls and Indicators...
Страница 113: ...93 4 8 FFT Analysis Function Stored waveform 1 1 octave analysis 1 3 octave analysis Example Octave analysis waveforms...
Страница 116: ...96 4 8 FFT Analysis Function...
Страница 117: ...97 1 2 3 4 5 6 7 8 9 10 11 12 13 14 A Chapter 5 Input Channel Settings...
Страница 177: ...157 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Chapter 8 Search Function...
Страница 186: ...166 8 6 Moving Cursors to the Search Points...
Страница 205: ...185 10 5 Example of Printer Output Printing the List MEM Example...
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