Iwatsu DS-8814, Operation Manual

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Using equivalent sampling for a repetition signal can speed up effective
sampling rate than the maximum single-shot sampling rate.
Every time waveform data is captured, the time tn (n=1, 2, 3,...) after
trigger generation until data is sampled is measured and data is
overwritten taking account of relative time relationship.
This instrument implements 10 G equivalent sampling by measuring
the time with 100 ps resolution.
Example of measurement by normal sampling and Equ sampling for
approx.100 MHz sine wave
Equivalent
sampling
(EQU SMPL)
Principle
This Norm sampling example is
shown by Join ON.
Data pieces captured in 5ns
period are linked with a line.
With long memory, equivalent
sampling is not performed
even if Equ Smpl is set to ON.
Join setting in Display menu
Restriction on
equivalent sampling
Trigger
3rd waveform data captured
1st waveform data captured
2nd waveform data captured
5 ns period
5 ns period
Norm sampling
Equivalent sampling
Sampling in 5 ns period
100 ps equivalent sampling
Mainly used to measure single-shot signal.
Can displays detailed waveform.
Displays other than Equ
Displays Equ