Agilent Technologies 6000 Series manual Averaging Mode, # Avgs=1, GSa/s Sample Rate

Displaying Data 6

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
				(# Avgs=1)
≤	50 ns/div	≤	50 ns/div	8
200 ns/div		100 ns/div		9
1 us/div		500 ns/div		10
5 us/div		2 us/div		11
≥	20 us/div	≥	10 us/div	12

Averaging Mode

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.

6000 Series Oscilloscope User’s Guide 267