User manual

Waveform Analysis
R&S
®
Scope Rider RTH
76User Manual 1326.1578.02 ─ 04
Meas. type Symbol Description Graphic / formula Source
Delay Δt
in s
Time difference between two slopes of
the same or different waveforms, mea-
sured on the 50% level.
t
S2
S1
2 sources:
analog, math,
reference, digital
Phase
∡
in °
Phase difference between two wave-
forms, measured on the 50% level.
Phase = Δt / T * 360°
t
S2
S1
100%0%
2 sources:
analog, math,
reference, digital
3.2.2.2 Amplitude Measurements
The unit of most amplitude measurement results depends on the measured source.
Meas. type Symbol Description Graphic / formula Source
Mean value Mean Arithmetic average of the complete dis-
played waveform.



N
k
k
x
N
1
1
Mean
analog, math,
reference, digital
RMS value RMS RMS (Root Mean Square) value of the
voltage of the complete displayed wave-
form.



N
k
k
x
N
1
2
1
RMS
analog, math,
reference
Crest factor Crest The crest factor is also known as peak-
to-average ratio. It is the maximum value
divided by the RMS value of the dis-
played waveform.
RMS
||Max
Crest
k
x

analog, math,
reference
Standard deviation
σ
Standard deviation of the displayed
waveform.
 





N
k
k
x
N
1
2
Mean
1
1
σ
analog, math,
reference
Minimum Min Minimum value within the displayed
waveform.
Min
analog, math,
reference
Maximum Max Maximum value within the displayed
waveform.
Max
analog, math,
reference
Peak to peak Pk-Pk Difference of maximum and minimum
values.
Max
Min
Pk-Pk
analog, math,
reference
Automatic Measurements