Concepts and Features
R&S
®
ZNA
71
User Manual 1178.6462.02 ─ 12
Sweep type
[Start](unit)
[Stop] (unit)
[Center] (unit)
[Span] (unit)
"Power"
"Start Power" (dBm)
"Stop Power" (dBm)
"CW Frequency" (Hz)
"CW Frequency" (Hz)
"CW Mode"
"CW Frequency" (Hz)
"Number of Points" (-)
"CW Frequency" (Hz)
"CW Frequency" (Hz)
"Time"
"CW Frequency" (Hz)
"Stop Time" (s)
"CW Frequency" (Hz)
"CW Frequency" (Hz)
"Amplitude Imbal-
ance"
*)
"Imb Start Power"
(dBm)
"Imb Stop Power" (dBm) –
–
"Phase Imbalance"
*)
"Imb Start Phase" (deg)
"Imb Stop Phase" (deg)
–
–
*)
Available in
The ranges of numerical values must be compatible with the instrument model. The
conditions for the stimulus range depend on the sweep type:
●
"Lin Freq" / "Log Freq" / "Segmented"
–
For "Lin Freq" and "Log Freq" sweeps, if the number of sweep points is greater
than 1, the stop frequency must be greater than the start frequency and the
span must be
≥
1 Hz. If a stop frequency smaller or equal than the current start
frequency is set, then the start frequency is adjusted and vice versa.
–
For "Segmented" sweeps, the start and stop frequency in a sweep segment
must not be different. So with a segmented sweep you can measure n
1
points
at frequency f
1
(in segment 1), n
2
points at frequency f
2
(in segment 2) etc.
●
"Power"
Start and stop power are both entered in absolute units (dBm). Start and stop
power must be different; the stop power must be larger than the start power. If a
stop power smaller than the start power is set, then the start power is adjusted
automatically and vice versa.
The power corresponds to the actual source power at the test ports (channel base
power P
b
). After a port power calibration, this source power is available at the cali-
brated reference plane.
●
"CW Mode"
The stimulus keys define the fixed stimulus frequency ("CW Frequency") and the
"Number of Points" of the measurement. The other sweep parameters (e.g. the
"Sweep Time") are set via Channel – [Sweep] > "Sweep Params".
●
"Time"
The stimulus keys define the fixed stimulus frequency ("CW Frequency") and the
total sweep time ("Stop Time") of the measurement. The other sweep parameters
(e.g. the "Number of Points") are set via Channel – [Sweep] > "Sweep Params".
The sweep time is entered in seconds and must be positive.
●
"Amplitude Imbalance"
This sweep mode is available in
only.
Both "Imb Start Power" and "Imb Stop Power" must be in the range between
-150
dBm and 100
dBm. The analyzer generates a balanced signal with configura-
ble frequency and power, however, the amplitude of one signal component or the
relative phase of the two components is varied according to this range.
●
"Phase Imbalance"
This sweep mode is available in
only.
Basic Concepts
