Rohde & Schwarz MXO 4 Series - Page 114

Acquisition and waveform setupMXO 4 Series
114User Manual 1335.5337.02 ─ 07
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It defines the number of waveforms used to calculate the average waveform.
Thus, the instrument acquires sufficient waveforms to calculate the correct average
if "Average" is enabled for waveform arithmetic. The higher the value is, the better
the noise is reduced.
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It sets the number of acquisitions to be acquired in a fast segmentation acquisition
series, and in the history.
The setting is read-only if "Segmented" > "Acquire maximum" is "On". See also
"Acquire maximum" on page 116.
Remote command:
ACQuire:COUNt on page 516
Resolution
Defines the time between two waveform samples in the waveform record. It considers
the processing of the captured samples including interpolation. A fine resolution with
low values produces a more precise waveform record.
The resolution is the reciprocal of the sample rate.
Remote command:
ACQuire:RESolution on page 518
Acquisition mode
Sets how the waveform is built from the captured samples.
"Sample"
Usually, most signals are displayed optimally with this acquisition
mode but very short glitches can remain undiscovered by this
method.
"Peak detect"
The minimum and the maximum of n samples are recorded as wave-
form points, the other samples are discarded. Thus the instrument
can detect fast signal peaks at slow time scale settings that would be
missed with other acquisition modes.
"Envelope"
Each acquisition is done in sample mode, and the minimum and max-
imum values over some consecutive acquisitions build the envelope.
"Average"
The average is calculated from the data of the current acquisition and
a specific number of consecutive acquisitions before. The method
reduces random noise. It requires a stable, triggered and repetitive
signal.
The number of acquisitions for average calculation is defined with N-
single/Avg count.
If the waveform is clipped, the instrument shows a distorted average
waveform to indicate the clipping. Adjust the vertical scale to avoid
the clipping. The acquisition progress is shown in the acquisition
label, see "Progress information" on page 72.
Remote command:
ACQuire:TYPE on page 520
Current Average count
Shows the current number of acquired waveforms that contribute to the average, for
Acquisition mode = "Average".
Acquisition