Displaying Data 6
6000 Series Oscilloscope User’s Guide 267
High Resolution mode is equivalent to the Averaging mode with
#Averages=1; however, you can turn on Realtime sampling in
the High Resolution mode.
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 scope's real-time bandwidth because
it effectively acts like a low-pass filter.
Averaging M ode
The Averaging mode lets you average multiple acquisitions
together to reduce noise and increase vertical resolution (at all
sweep speeds). Averaging requires a stable trigger.
The number of averages can be set from 1 to 65536 in
powers-of-2 increments.
A higher number of averages reduces noise more and increases
vertical resolu tion.
The higher the number of averages, the slower the displayed
waveform responds to waveform changes. You must
compromise between how quickly the waveform responds to
changes and how much you want to reduce the displayed noise
on the signal.
2GSa/s Sample Rate 4GSa/s Sample Rate Bits of resolution
(# Avgs=1)
≤50ns/div ≤50ns/div 8
200ns/div 100ns/div 9
1 us/div 500ns/div 10
5 us/div 2 us/div 11
≥20 us/div ≥10 us/div 12
# Avgs Bits of resolution
28
49
16 10
64 11
≥256 12