Hioki MR8827, Instruction Manual

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248
FFT Analysis Condition Settings
Relationship Between Frequency Range, Resolution and Number of Analysis Points
Range
[Hz]
Sampling
frequency
[Hz]
Timebase
[/div]
(MEM)
Sampling
period
Number of FFT analysis Points
1,000 2,000 5,000 10,000
Resolution
[Hz]
Acquisition
interval
Resolution
[Hz]
Acquisition
interval
Resolution
[Hz]
Acquisition
interval
Resolution
[Hz]
Acquisition
interval
8 M
*1
20 M 5 µs 50 ns 20 k 50 µs 10 k 100 µs 4 k 250 µs 2 k 500 µs
4 M
*1
10 M 10 µs 100 ns 10 k 100 µs 5 k 200 µs 2 k 500 µs 1 k 1 ms
2 M
*1
5 M 20 µs 200 ns 5 k 200 µs 2.5 k 400 µs 1 k 1 ms 500 2 ms
800 k
*1
2 M 50 µs 500 ns 2 k 500 µs 1 k 1 ms 400 2.5 ms 200 5 ms
400 k
*1
1 M 100 µs 1 µs 1 k 1 ms 500 2 ms 200 5 ms 100 10 ms
200 k
*1
500 k 200 µs 2 µs 500 2 ms 250 4 ms 100 10 ms 50 20 ms
80 k
*1
200 k 500 µs 5 µs 200 5 ms 100 10 ms 40 25 ms 20 50 ms
40 k 100 k 1 ms 10 µs 100 10 ms 50 20 ms 20 50 ms 10 100 ms
20 k 50 k 2 ms 20 µs 50 20 ms 25 50 ms 10 100 ms 5 200 ms
8 k 20 k 5 ms 50 µs 20 50 ms 10 100 ms 4 250 ms 2 500 ms
4 k 10 k 10 ms 100 µs 10 100 ms 5 200 ms 2 500 ms 1 1 s
2 k
5 k 20 ms 200 µs 5 200 ms 2.5 400 ms 1 250 ms 500 m 2 s
800
2 k 50 ms 500 µs 2 500 ms 1 1 s 400 m 2.5 s 200 m 5 s
400
1 k 100 ms 1 ms 1 1 s 500 m 2 s 200 m 5 s 100 m 10 s
200
500 200 ms 2 ms 500 m 2 s 250 m 4 s 100 m 10 s 50 m 20 s
80
200 500 ms 5 ms 200 m 5 s 100 m 10 s 40 m 25 s 20 m 50 s
40
100 1 s 10 ms 100 m 10 s 50 m 20 s 20 m 50 s 10 m 100 s
20
50 2 s 20 ms 50 m 20 s 25 m 40 s 10 m 100 s 5 m 200 s
8 *2
20 5 s 50 ms 20 m 50 s 10 m 100 s 4 m 250 s 2 m 500 s
4 *2
10 10 s 100 ms 10 m 100 s 5 m 200s 2 m 500 s 1 m 1 ks
1.33 *2
3.33 30 s 300 ms 3.33 m 300 s 1.66 m 600s 666 µ 1.5 ks 333 µ 3 ks
800 m
*2
2 50 s 500 ms 2 m 500 s 1 m 1 ks 400 µ 2.5 ks 200 µ 5 ks
667 m
*2
1.67 60 s 600 ms 1.66 m 600 s 833 µ 1.2 ks 333 µ 3 ks 166 µ 6 ks
400 m
*2
1 100 s 1 s 1 m 1 ks 500 µ 2 ks 200 µ 5 ks 100 µ 10 ks
333 m
*2
833 m 120 s 1.2 s 833 µ 1.2 ks 416 µ 2.4 ks 166 µ 6 ks 83.3 µ 12 ks
133 m
*2
333 m 300 s 3 s 333 µ 3 ks 166 µ 6 ks 66.6 µ 15 ks 33.3 µ 30 ks
The cut-off frequency of the anti-aliasing filter is the same as the frequency range.
*1. The anti-aliasing filter is off.
*2. Cut-off frequency is 20 Hz.