User Manual
148
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8.3 STATUS1 Settings (FFT)
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8
.3.3 Setting the Frequency Range
Screen: STATUS1, DISPLAY
Call up the STATUS1 or DISPLAY screen
.
Move the flashing cursor to the frequency
range item, shown in the figure on the left
.
Use the JOG control or the function keys
to make the selection.
Method
Method
：Move the cursor up in the selection
window.
：Move the cursor down in the
selection window.
Selection
Selection
NOTE
frequency range Frequency resolution*
3
Window width*
4
Time axis
400 kHz*
1
1 kHz
1ms
100
μ
s/DIV
200 kHz*
1
500 Hz
2ms
200 μs/DIV
80 kHz*
1
200 Hz
5ms
500 μs/DIV
40 kHz
100 Hz
10 ms
1 ms/DIV
20 kHz
50 Hz
20 ms
2 ms/DIV
8 kHz
20 Hz
50 ms
5 ms/DIV
4 kHz
10 Hz
100 ms
10 ms/DIV
2 kHz
5Hz
200 ms
20 ms/DIV
800 Hz
2Hz
500 ms
50 ms/DIV
400 Hz
1Hz
1s
100 ms/DIV
200 Hz
500 mHz
2s
200 ms/DIV
80 Hz
200 mHz
5s
500 ms/DIV
40 Hz
100 mHz
10 s
1 s/DIV
20 Hz
50 mHz
20 s
2 s/DIV
8 Hz*
2
20 mHz
50 s
5 s/DIV
4 Hz*
2
10 mHz
100 s
10 s/DIV
1.33 Hz*
2
3.33 mHz
5 min
30 s/DIV
667 mHz*
2
1.67 mHz
10 min
1 min/DIV
333 mHz*
2
0.83 mHz
20 min
2 min/DIV
133 mHz*
2
0.33 mHz
50 min
5 min/DIV
・The frequency range (frequency axis maximum value) can be set as follows.
・The frequency range corresponds to the time axis range (TIME/DIV) setting of
the memory function.
・The antialiasing filter (8938 and 8947) cutoff frequency is the same as the
selected frequency range.
・When EXT was selected, octave analysis cannot be carried out.
・To use external sampling: See Section 17.4.
■ Frequency Range, Frequency Resolution, Window Width, Corresponding Time Axis
Range (sampling point: 1000)
The cutoff frequency of the antialiasing filter is the same as the selected frequency range, except for the cases
listed below.
*1: Antialiasing filter is OFF. *2: Cutoff frequency is 20 Hz.
*3: When the number of FFT sampling points is 2000, the frequency resolution is half of the values shown in the
table. When the number of FFT sampling points is 5000, the frequency resolution is one-fifth of the value
shown in the table. When the number of FFT sampling points is 10,000, the frequency resolution is one-
tenth of the value shown in the table.
*4: When the number of FFT sampling points is 2000, the window width is doubled. When the number of FFT
points is 5000, the window width is increased by five times. When the number of FFT sampling points is
10,000, the window width is tenfold.