User manual

Acquisition and Setup
R&S
®
RTO
17User Manual 1316.0827.02 ─ 06
Fig. 2-4: Waveforms acquired with different sample rates
This means that the sample rate must be set to a value 3 to 5 times the fastest frequency
component of the signal. A higher sample rate increases signal fidelity, increases the
chance to capture glitches and other signal anomalies, and improves the zoom-in capa-
bilities.
2.1.2.2 Acquisition Settings
The sample rate can be the same as the constant ADC sample rate, or higher, or lower.
To get a higher sample rate, methods of resolution enhancement are used: interpolation
and equivalent time sampling. To reduce the sample rate, decimation methods help:
sample, peak detect, high resolution and RMS.
As digital waveform data is stored in the memory, and the memory can save many wave-
form records, further waveform arithmetic processing is possible: average and enve-
lope waveforms are resulting waveforms, created from a composite of sample points
taken from multiple acquisitions.
The R&S RTO provides the following acquisition features:
You can combine resolution enhancement and waveform decimation modes with
waveform arithmetic.
You can display up to three waveforms from one input signal and apply different
decimation and arithmetic to each waveform.
Basics