Agilent Technologies InfiniiVision 5000 Series Guida Utente Scaricare il pdf (Pagina 211)

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5000 Series Oscilloscope User’s Guide 211

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.

Table 1 0 Sample Rate, Sweep Speed, and Bits of Resolution

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.

Table 1 1 Number of Averages, Bits of Resolution

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.

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

# Avgs Bits of resolution

16 10

64 11

≥ 256 12

1 2 ... 206 207 208 209 210 211 212 213 214 215 216 ... 295 296

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Agilent Technologies InfiniiVision 5000 Series Guida Utente Pagina 211