Rohde & Schwarz FSH4, Руководство по эксплуатации

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R&S FSH Network Analyzer Mode
Performing Scalar Measurements
Operating Manual 1309.6275.12 - 14 131
4.2.2 Measuring the Reflection
The example included here is based on a reflection measurement of the same two-port
filter used for the transmission measurement. The filter has a center frequency of
2060 MHz and a bandwidth of about 11 MHz.
You can skip the preset, scalar measurement selection and frequency settings if you
have already set up the R&S FSH for the measurement. You can also skip the
calibration, if you have performed the appropriate calibration already.
Preset the R&S FSH
Before starting the measurement procedure, preset the R&S FSH to restore the default
configuration and connect the filter between the measurement ports.
M Press the PRESET key.
M Connect the DUT.
Start scalar measurements
M Press the MEAS key.
M Press the "Meas Mode" softkey.
M Select the "Scalar" menu item.
Select the type of reflection measurement
M Press the "Result Display" softkey.
M Select the "Reflection Port 1" menu item for reflection measurements on port 1 or
the "Reflection Port 2" menu item for reflection measurements on port 2.
Define the frequency parameters
Before calibrating the measurement, you should define the frequency parameters to
avoid inaccurate results because of invalid calibration.
M Press the FREQ key.
The R&S FSH opens an input field to set the center frequency.
M Enter a frequency of 2060 MHz.
M Press the SPAN key.
The R&S FSH opens an input field to define the span.
M Enter a span of 50 MHz to get a high resolution of the results.
Calibrate the measurement for scalar transmission measurements.
Scalar measurements provide normalization only. Normalization is not as accurate as
a full calibration, but yields pretty accurate results. In addition, normalization needs one
calibration standard only and therefore is faster than a full calibration.