VNA GUI Reference
R&S
®
ZNL/ZNLE
351
User Manual 1178.5966.02 ─ 07
unformatted wave quantities is 1 Volt. The RMS value has zero phase. The selected
trace format is applied to the unformatted RMS value, which means that the RMS
result of a trace does depend on the trace format.
Remote command:
CALCulate<Chn>:STATistics:MMPTpeak[:STATe]
CALCulate<Chn>:STATistics:MSTDdev[:STATe]
CALCulate<Chn>:STATistics:RMS[:STATe]
CALCulate<Chn>:STATistics:RESult?
CALCulate<Chn>:STATistics[:STATe]
CALCulate<Chn>:STATistics[:STATe]:AREA
Format
This setting determines how
Min/Max/Peak-Peak, Mean/Std Dev/RMS
for complex-val-
ued traces (Smith, Polar) are calculated:
●
"ZVAB": the results are based on unformatted wave quantities (voltages)
●
"R + jX": the results are based on the impedance values R and X
●
"G + jB": the results are based on the admittance values G and B
In the two latter cases, the "RMS" value is not displayed.
Remote command:
CALCulate<Chn>:STATistics:FORMat
Phase/El Length
Displays or hides the phase delay ("Phs Dly") and the electrical length ("El Len") of the
trace in the selected evaluation range ("Evaluation Range..."). The parameters are only
available for trace formats that contain phase information, i.e. for the formats "Phase" ,
"Unwr Phase" , and the polar diagram formats "Polar" , "Smith" , "Inv Smith" (see
Chapter 9.8, "Format Softtool"
on page 382). Moreover, the sweep type must be a fre-
quency sweep, and the evaluation range must contain at least 3 measurement points.
The phase parameters are obtained from an approximation to the derivative of the
phase in the selected evaluation range.
●
"Phs Dly" is the phase delay, which is an approximation to the group delay and cal-
culated as follows:
f
PD
deg
360
where Δf is the width of the evaluation range and ΔΦ is the corresponding phase
change. See also note on transmission and reflection parameters below.
●
"El Len" is the electrical length, which is the product of the phase delay times the
speed of light in the vacuum.
If no dispersion occurs, the phase delay is equal to the group delay. For more informa-
tion, refer to
Chapter 8.3.8, "Delay, Aperture, Electrical Length"
Note:
To account for the propagation in both directions, delay and electrical length of a
reflection parameter are only half the delay and electrical length of a transmission
Trace Softtool
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