Averaging Mode - Agilent Technologies MSO6012A User Manual

Averaging Mode

6000 Series Oscilloscope User's Guide
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.
2 GSa/s Sample Rate 4 GSa/s Sample Rate Bits of resolution
≤ 50 ns/div
200 ns/div
1 us/div
5 us/div
≥
20 us/div
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 resolution.
# Avgs Bits of resolution
2 8
4 9
16 10
64 11
≥ 256
12
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.
≤ 50 ns/div
100 ns/div
500 ns/div
2 us/div
≥
10 us/div
Displaying Data
(# Avgs=1)
8
9
10
11
12
261
6