GUI Reference
R&S
®
ZNB/ZNBT
329
User Manual 1173.9163.02 ─ 53
●
"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 5.3.8, "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
parameter. The formula for PD above is for transmission parameters. See the section
on "Length and delay measurement" in
Chapter 5.6.1.3, "Auto Length"
Tip:
The phase evaluation can cause misleading results if the evaluation range con-
tains a 360 deg phase jump. The trace format "Unwr Phase" avoids this behavior.
Remote command:
CALCulate<Chn>:STATistics:EPDelay[:STATe]
CALCulate<Chn>:STATistics:RESult?
CALCulate<Chn>:STATistics[:STATe]
Flatness/Gain/Slope
Displays or hides trace parameters that the analyzer calculates for the selected evalua-
tion range ("Evaluation Range...").
Suppose that A and B denote the trace points at the beginning and at the end of the
evaluation range, respectively.
●
"Gain" is the larger of the two stimulus values of points A and B.
●
"Slope" is the difference of the stimulus values of point B minus point A.
●
"Flatness" is a measure of the deviation of the trace in the evaluation range from
linearity. The analyzer calculates the difference trace between the active trace and
the straight line between points A and B. The flatness is the difference between the
largest and the smallest response value of this difference trace.
Remote command:
CALCulate<Chn>:STATistics:SFLatness[:STATe]
CALCulate<Chn>:STATistics:RESult?
CALCulate<Chn>:STATistics[:STATe]
CALCulate<Chn>:STATistics[:STATe]:AREA
Compr. Point / Compr. Val.
Displays or hides all results related to the x dB (or x degrees) compression point of the
trace, where x is the selected compression value. To obtain valid compression point
results, a power sweep must be active, and the trace format must be dB or phase.
For dB traces, the x dB compression point of an S parameter or ratio is defined as the
stimulus level where the response value has dropped by x dB compared to the
response value at small stimulus signal levels ("small signal value"). For phase traces,
the x degree compression point of an S parameter or ratio is defined as the stimulus
level where the phase value has dropped by x° compared to the phase value at small
stimulus signal levels. By default, the analyzer uses the value at the "First Point" of the
selected evaluation range ("Evaluation Range...") as an approximation for the small
signal value. However, you may also choose a different
Trace Config Softtool
