GUI reference
R&S
®
ZNA
379
User Manual 1178.6462.02 ─ 20
Application:
Transmission measurements, especially with the purpose of investigating
deviations from linear phase response and phase distortions. To obtain the delay, a fre-
quency sweep must be active.
Tip:
The cables between the analyzer test ports and the DUT introduce an unwanted
delay, which often can be assumed to be constant. Use the Zero Delay at Marker func-
tion, define a numeric length "Offset" or use the "Auto Length" function to compensate
for this effect in the measurement results. To compensate for a frequency-dependent
delay in the test setup, a system error correction is required.
Note:
The delay for reflection factors corresponds to the transmission time in forward
and reverse direction; see
"Length and delay measurement, related settings"
Remote command:
GDELay
Aperture Points
Defines an aperture Δf for the (group) "Delay" calculation. The value is entered as
number of "Aperture Points" (i.e. sweep steps).
Properties:
The delay at each sweep point is computed as:
where the aperture Δf is a finite frequency interval around the sweep point f
0
and the
analyzer measures the corresponding phase change ΔΦ.
Calculation of Δf and ΔΦ
Format softtool
