Hioki 8835-01 - Setting Anti-aliasing Filter

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7.5 Making the Settings of the 8938 FFT ANALOG UNIT
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Frequency Range, Frequency Resolution, Window Width,
Corresponding Time Axis Range (Number of FFT points: 1000)
Frequency range
[Hz]
Frequency
resolution
[Hz]
Window width
Time axis
[ /DIV ]
400 k *
1
200 k *
1
80k*
1
40 k
20 k
8k
4k
2k
800
400
200
80
40
20
8*
2
4*
2
1.33 *
2
667 m *
2
333 m *
2
133 m *
2
1k
500
200
100
50
20
10
5
2
1
500 m
200 m
100 m
50 m
20 m
10 m
3.3 m
1.67 m
0.83 m
0.33 m
1ms
2ms
5ms
10 ms
20 ms
50 ms
100 ms
200 ms
500 ms
1s
2s
5s
10 s
20 s
50 s
100 s
5 min
10 min
20 min
50 min
100 μs
200 μs
500 μs
1ms
2ms
5ms
10 ms
20 ms
50 ms
100 ms
200 ms
500 ms
1s
2s
5s
10 s
30 s
1 min
2 min
5 min
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.