Rohde & Schwarz 1145.1010.04/05/06, Руководство по эксплуатации

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Trace Menu R&S
®
ZVA/ZVB/ZVT
1145.1084.12 4.18 E-6
list) of the wave that forms the numerator of the ratio. The input (stimulus) or output
(response) port number is selected in the right pull-down list. The range of output and input port
numbers depends on the analyzer model.
•
Denominator selects the type (left pull-down list) and the port number assignment (right pull-
down list) of the wave that forms the denominator of the ratio. The same waves as for the
Numerator are available.
•
Ratio indicates the selected ratio.
•
Source Port selects one of the available test ports of the analyzer as a source of the stimulus
signal.
•
Detector selects the algorithm that is used to calculate the displayed trace from the individual
measurement points. In the Max. and RMS detector modes, it is possible to define the detector
observation time (Meas. Time) for a single measurement point. Detector settings are available
for ZVA and ZVT network analyzers only.
Remote
control:
CALCulate<Ch>:PARameter:MEASure "<Trace_Name>", "B2/A1" | ...
[SENSe<Ch/Tr>:]FUNCtion[:ON] "...POWer:RATIO B2, A1"
etc.
Create new trace and select name and measurement parameter:
CALCulate<Ch>:PARameter:SDEFine "<Trace_Name>", "B2/A1" | ...
Detector
Selects the algorithm that is used to calculate the displayed measurement points from the raw data. The
Detector can be selected in the More Ratios and More Wave Quantities dialogs. Detector settings are
available for ZVA and ZVT network analyzers only.
The following detectors are available:
•
Normal selects the default detector mode where each measurement point is displayed without
modification as soon as it is recognized to be valid. The analyzer then proceeds to the next
sweep point. Normal detector mode ensures that the measurement is performed at maximum
speed and that a meaningful complex result is obtained.
•
Peak collects all valid results at each sweep point during the Meas. Time set in the More Ratios
or More Wave Quantities dialog and selects the result with the maximum magnitude (maximum
power) as the measurement point. The imaginary part of the measurement point is set to zero.
•
RMS collects all valid results at each sweep point during the Meas. Time set in the More Ratios
or More Wave Quantities dialog and calculates the root mean square (RMS) of the of these
results. This yields the real part of the measurement point. Averaging the phase does not make
sense so the imaginary part of the measurement point is set to zero.
The detector settings have an influence on the displayed trace. They do not affect the number of
measurement points in a sweep (or in a subset of the sweep range) but may increase the
sweep time.
In the Peak and RMS detector settings, the sweep time can not be smaller than the detector
observation time (Meas. Time) set in the More Ratios or More Wave Quantities dialogs. The sweep time
can be larger if additional delays are taken into account. Changing the Meas. Time affects the sweep
time . On the other hand, increasing the Sweep Time in the Channel – Sweep menu leaves the Meas.
Time unchanged .