User manual

Acquisition and Setup
R&S
®
RTO
32User Manual 1316.0827.02 ─ 06
Channel-dependent settings
The "Decimation" and "Wfm arithmetic" are specific for each waveform. Make sure to
select the channel tab first, then set up the waveforms.
Resolution enhancement
If the ADC sample rate is too slow to capture sufficient samples to achieve the required
resolution, the sample rate can be increased by adding calculated points to the waveform
record. The enhancement method is the same for all channels and waveform. As long
as the waveform sample rate is not higher than the ADC sample rate, the instrument
works automatically in real time mode, enhancement settings are ignored. Otherwise -
for resolutions faster than 100ps - the instrument changes to interpolated time mode. If
enhancement is done, the instrument ignores the decimation settings.
The methods are:
"Real time"
The sampled points of the input signal are used directly to build the
waveform. Actually, the real time mode is not an enhancement mode.
The maximum "Sample rate" is the "ADC sample rate". In this mode,
decimation can be set to reduce the amount of data. The real time mode
is used to acquire non-repetitive and transient signals.
"Interpolated
time"
If the "Sample rate" is higher than the "ADC sample rate", interpolation
adds points between the ADC samples of the waveform by various
mathematic methods, see Interpolation mode. This is the default
enhancement method.
Reference for Acquisition and Setup