GUI reference
R&S
®
ZNA
392User Manual 1178.6462.02 ─ 29
"Compression Value"
P
Cmp,IN
(f)
S [dB]
P [dBm]
"Start power"
S
Cmp
(f)
Frequency f = f
1
, …, f
N
If a full 2-port calibration is used, the R&S ZNA also requires measurements in reverse
direction, i.e. with the receiving port of the gain compression measurement operating
as source port. In the current implementation, by default the same power sweeps are
used for the reverse direction. If the resulting power levels are inadequate for your
DUT, you have to configure a source power different from Pb for the receiving port of
the gain compression measurement (see "Channel Base Power" on page 630).
Skipping the linear part
For all frequencies, the power sweep starts at the configured start power, which serves
as the reference for the compression point. The power sweep always stops when it
reaches a point that falls below the configured Compression Value. However, if the lin-
ear part is large compared to the compression part, a large part of the measurement
time is wasted for irrelevant power points. If you enable Skip Linear Sweep Section,
then for frequency f
n+1
the firmware skips all power sweep points between start power
and P
Cmp,IN
(f
n
) – "Start Before Cmp" on page 393.
"Compression Value"
P
Cmp,IN
(f
n
)
S [dB]
P [dBm]
"Start power" =
1st power sweep point
for all frequencies
S
Cmp
(f
n
)
Frequency f
n
2nd
power sweep point
for f
n+1
"Start before Cmp"
skipped for f
n+1
Meas softtool
To Next Page
Loading...
