Acquisition and waveform setup
R&S
®
RTP
149User Manual 1337.9952.02 ─ 12
Average count (N-single count)
Access:
●
"Menu" > "Acquire" > "Setup" tab > "Average count (N-single count)"
●
"Menu" > "Acquire" > "Segmented" tab > disable "Acquire maximum" > "Required"
●
[Math] > "Setup" tab > "Mode" is not "Off" > "Average count"
The acquisition and average count has several effects:
●
It sets the number of waveforms acquired with [Single]
●
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.
●
It sets the number of acquisitions to be acquired in a fast segmentation acquisition
series. Thus, you can acquire exactly one fast segmentation acquisition series with
[Single].
If fast segmentation is enabled and configured to acquire the maximum number of
acquisitions, the acquisition count is set to that maximum number and cannot be
changed.
See also "Number of acquisitions" on page 154.
●
It is the "Finished" criteria for the state of a mask test.
Remote command:
ACQuire:COUNt on page 1196
Interpolation
Selects the interpolation method. If the defined "Sample rate" is higher than the ADC
sample rate, interpolation adds points between the captured samples of the waveform
by various mathematic methods.
"Linear"
Two adjacent ADC sample points are connected by a straight line, the
interpolated points are located on the line. You see a polygonal wave-
form similar to the real signal, and also the ADC sample points as
vertexes.
"sin (x)/x"
Two adjacent ADC sample points are connected by a sin(x)/x curve,
and also the adjoining sample points are considered by this curve.
The interpolated points are located on the resulting curve. This inter-
polation method is precise and shows the best signal curve.
"Sample/Hold"
The ADC sample points are displayed like a histogram. For each
sample interval, the voltage is taken from the sample point and con-
sidered as constant, and the intervals are connected with vertical
lines. Thus, you see the discrete values of the ADC - the measured
samples.
Remote command:
ACQuire:INTerpolate on page 1194
Resolution dependency
Selects the resolution dependency settings
Mode ← Resolution dependency
You can choose to keep constant either the resolution or the record length when you
adjust the time scale or acquisition time.
Acquire settings
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