YOKOGAWA DL7440, User Manual

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IM 701450-61E
Appendix 2 Record Length and T/div Settings
That Allow Waveform Computation of
Harmonics
50ms 100ms 200ms 500ms 1s 2s 5s 10s 20s 50s
1k 50Hz 640 320 160 64 32 16 6 — — —
60Hz 533 267 133 53 27 13 5 — — —
10k 50Hz 6400 3200 1600 640 320 160 64 32 16 6
60Hz 5333 2667 1333 533 267 133 53 27 13 5
50k 50Hz 32000 16000 8000 3200 1600 800 320 160 80 32
60Hz 26667 13333 6667 2667 1333 667 267 133 67 27
100k 50Hz 64000 32000 16000 6400 3200 1600 640 320 160 64
60Hz 53333 26667 13333 5333 2667 1333 533 267 133 53
250k 50Hz 160000 64000 32000 16000 6400 3200 1600 640 230 160
60Hz 133333 53333 26667 13333 5333 2667 1333 533 267 133
500k 50Hz 320000 160000 64000 32000 16000 6400 3200 1600 640 320
60Hz 266667 133333 53333 26667 13333 5333 2667 1333 533 267
1M 50Hz 640000 320000 160000 64000 32000 16000 6400 3200 1600 640
60Hz 533333 266667 133333 53333 26667 13333 5333 2667 1333 533
2M 50Hz 1600000 640000 320000 160000 64000 32000 16000 6400 3200 1600
60Hz 1333333 533333 266667 133333 53333 26667 13333 5333 2667 1333
4M 50Hz 3200000 1600000 640000 320000 160000 64000 32000 16000 6400 3200
60Hz 2666667 1333333 533333 266667 133333 53333 26667 13333 5333 2667
T/div
Record
Length
Fundamental
Frequency
To perform waveform computation on harmonics, 16 cycles of the fundamental waveform is
required. In addition, the number of waveform data points must be at least 8192 points within
the 16 cycles. The area shown in white in the table below is the area where waveform
computation on harmonics is possible. Waveform computation on harmonics is not possible in
the gray area.
Number of Waveform Data Points According to the Record Length and Time Axis (T/div)