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Chapter 4 To Set the Sample System RIGOL
DS8000-R User Guide 4-7
much smoother waveform on the screen. This is generally used when the sample
rate of the digital converter is greater than the storage rate of the acquisition
memory.
Note:
âš« The "Average" and "High Res" modes use different averaging methods. The
former uses "Multi-sample Average" and the latter uses "Single-sample
Average".
âš« In "High Res" mode, the oscilloscope improves the measurement accuracy at
the cost of bandwidth. Each time the sampling rate changes, a window
displaying the current bandwidth appears at the lower-left corner of the screen.
âš« In "High Res" mode, the highest waveform refresh rate mode is not supported.
Sampling Mode
This oscilloscope only supports the real-time sampling mode. In this mode, the
oscilloscope produces the waveform display from samples collected during one
trigger event. The highest real-time sample rate on the analog channel of DS8000-R
series is 10 GSa/s (note that for DS8034-R, it is 5 GSa/s). The current sample rate is
displayed under CH SampleRate.
Sample Rate
Sampling is the process of converting the analog signal into the digital signal at a
specified time interval and then restoring them in sequence. The sample rate is the
reciprocal of the time interval.
The sample rate of the analog channel is related to the current channel mode. The
maximum real-time sample rate in the single-channel mode of the oscilloscope is 10
GSa/s. The maximum real-time sample rate in the dual-channel mode is 5 GSa/s, and
the maximum real-time sample rate in the 4-channel mode is 2.5 GSa/s.
Note: For DS8034-R, the maximum real-time sample rate in the single-channel
mode of the oscilloscope is 5 GSa/s. The maximum real-time sample rate in
the dual-channel mode is 5 GSa/s, and the maximum real-time sample rate in
the 4-channel mode is 2.5 GSa/s
Tip
When you click the
label at the top of the screen to stop sampling, the
oscilloscope will maintain its last captured graph. At this time, you can still expand
or zoom the waveforms horizontally or vertically.
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