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Measurements
R&S
®
MXO 4 Series
213User Manual 1335.5337.02 ─ 05
Meas. type Symbol Description/result
RMS RMS RMS (root mean square) value of the voltage of the complete displayed waveform.
N
k
k
x
N
1
2
1
RMS
σ (S-dev/AC-RMS) σ (S-
dev/AC-
RMS)
Standard deviation of one cycle, usually of the first, left-most signal period.
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 displayed waveform.
RMS
||Max
Crest
k
x
Pos. Overshoot
Neg. Overshoot
P.OS
N.OS
Overshoot of a square wave after a rising or falling edge. It is calculated from measurement val-
ues top level, base level, local maximum, local minimum, and amplitude.
%100
Amplitude
TopMax
Over
local
%100
Amplitude
Min Base
Over
local
9.2.4.3 Area and cycle measurements
All cycle measurements require that at least one complete period of the signal is
acquired.
Meas. type Symbol Description/result
Area Area Area between the waveform and a reference level (X
Ref
).
Eval
N
i
Ref
Eval
Eval
Ref
Xix
N
T
A
1
)(
T
Eval
: Evaluation time, time of a full waveform or limited by a gate
Cycle area CArea Area between the waveform and a reference level measured for one period, see also "Area" mea-
surement.
Pos duty cycle PDCyc Width of the first positive pulse in relation to the period in %.
%100
Period
PosPulse
PosCyc
T
T
R
Neg duty cycle NDCyc Width of the first negative pulse in relation to the period in %.
%100
Period
NegPulse
NegCyc
T
T
R
Cycle mean CMean Mean value of one cycle
Cycle RMS CRMS RMS (root mean square) value of one cycle
Cycle σ(S-dev) Cycσ Standard deviation of one cycle
Automatic measurements
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