User Manual

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4.3 STATUS Settings (FFT)
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A
4.3.1 Setting the Function Mode
Function
display
Meaning
:
Memory recorder function
:
Recorder function
:
Recorder & Memory recorder function
:
FFT function
4.3.2 Setting the FFT Channel Mode
Function
display
Meaning
:
One channel
:
Two channels
NOTE
The 8855 has four function modes. Select the FFT function.
Procedure Screen: STATUS, CHANNEL, Waveform display, TRIGGER
1. Use the Menu keys to display the desired screen.
2. Move the flashing cursor to the top position.
3. Select the
FFT
function key display.
This setting determines whether only one channel (1ch-FFT) or two channels
(2ch-FFT) are used for FFT processing. When "1ch-FFT" is selected, certain
FFT analysis modes will not be available.
Screen: STATUS
Procedure 1. Use the Menu keys to display the desired screen.
2. Move the flashing cursor to the
FFT Mode
item.
3. Use the function key to make the selection.
The following analysis functions are not possible in 1-channel FFT mode:
Transfer function (TRF), cross-power spectrum (CSP), cross-correlation
function (CCR), unit impulse response (IMP), coherence function (COH)