Acquisition Control 12
Agilent InfiniiVision 3000 X-Series Oscilloscopes User's Guide 199
See Also • Chapter 11, “Trigger Mode/Coupling,” starting on page 179
High Resolution Acquisition Mode
In High Resolution mode, at slower time/div settings extra samples are
averaged in order to reduce random noise, produce a smoother trace on
the screen, and effectively increase vertical resolution.
High Resolution mode averages sequential sample points within the same
acquisition. An extra bit of vertical resolution is produced for every factor
of 2 averages. Random noise is reduced by ½ for every factor of 4
averages. The number of extra bits of vertical resolution is dependent on
the time per division setting (sweep speed) of the oscilloscope.
The slower the time/div setting, the greater the number of samples that
are averaged together for each display point.
High Resolution mode can be used on both single- shot and repetitive
signals and it does not slow waveform update because the computation is
done in the MegaZoom custom ASIC. High Resolution mode limits the
oscilloscope's real-time bandwidth because it effectively acts like a
low- pass filter.
Acquiring to Segmented Memory
You can purchase the oscilloscope with the segmented memory option
factory- installed (Option SGM) or you can install a license to enable it
(order model number DSOX3SGM "Segmented Memory").
Sweep speed Bits of resolution
≤ 1µs/div
8
2µs/div 9
5µs/div 10
10 µs/div 11
≥ 20 µs/div
12
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