Acquisition and waveform setup
R&S
®
RTO6
185User Manual 1801.6687.02 ─ 05
When you disable a deembedded differential signal in "Vertical" > "Differential Signals",
deembedding is also disabled. When you enable the dif
ferential signal again, repeat
the deembedding and output settings.
5.8.4
Analysis of differential signals
Before analyzing the output waveforms of differential signals, make sure that the P and
N signals are correctly aligned. Without deembedding, use "Horizontal" > "Skew" to
deskew the input waveforms if necessary. For deembedded waveforms, the skew set-
ting is in the deembedding configuration.
For all output waveforms of differential signals (differential, common mode, P, N), the
usual analysis methods are available:
●
Trigger on differential, common mode, P, and N waveforms.
If the differential signal is enabled ("Enable" = on), all possible output waveforms
are available as trigger source, even if they are not selected and not displayed.
●
Zoom
●
Cursor measurements
●
Automatic measurements
●
Histogram
●
Mathematics. In formulas, use DIFF1, DIFF2, COMMON1, COMMON2.
●
FFT, spectrogram
●
Mask test
●
Export of waveform data. You can export the differential and common waveforms if
they are selected as output and displayed. Raw data is not available.
Without deembedding, P and N waveforms can be exported if they are selected as
output and displayed (source = input channel). With software deembedding, only
differential and common waveforms are available for export.
5.9 Setting up the waveform
This chapter contains the fundamental procedures for setting up the acquisition and
adjusting the channel waveforms.
5.9.1 Adjusting passive probes
When using a passive probe, you have to compensate it when you connect it to the
instrument the first time. Compensation matches the probe cable capacitance to the
oscilloscope input capacitance to assure good amplitude accuracy from DC to upper
bandwidth limit frequencies. A poorly compensated probe reduces the performance of
the probe-oscilloscope system and introduces measurement errors resulting in distor-
ted waveforms and inaccurate results.
Setting up the waveform
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