Technical data

3Capturing Data
70 Agilent 3000 Series Oscilloscopes User’s Guide
To select the equivalent-time sampling mode
In the equivalent- time sampling mode (also known as repetitive sampling),
multiple waveforms are sampled using randomly differing delays from the
trigger to yield higher effective sampling rates.
In the equivalent- time sampling mode, the effective sample rate can be
greater because the time between samples in the acquisition is shorter.
Equivalent- time sampling mode requires a repetitive waveform with a
stable trigger.
Use the equivalent- time sampling mode to capture repetitive
high- frequency signals at greater sample rates than are available in the
real- time sampling mode.
Do not use the equivalent- time mode for single- shot events or pulse
waveforms.
The benefits of the equivalent-time sampling mode are negligible when
sample rates are the same as available in the real-time sampling mode.
In the 3000 Series oscilloscopes, the equivalent time sampling mode can
achieve up to 20 ps of horizontal resolution (equivalent to 50 GSa/s).
Figure 32 Equivalent-Time (Repetitive) Sampling Mode
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= Waveform Sample is From
Trigger Time
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