R&S FSH
Network Analyzer Mode
Evaluating the Results
Operating Manual 1309.6275.12 - 14
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4.4 Evaluating the Results
4.4.1 Selecting the Measurement Format
Depending on the measurement mode (scalar or vector) and result display (reflection
or transmission), you can select one of several measurement formats. Each of the
measurement formats shows a different aspect of the measurement results.
Note that some of the measurement formats become available only after you have
calibrated the measurement.
M
Press the MEAS key.
M
Press the "Format" softkey.
M
Select the measurement format from the menu.
The R&S FSH displays the results in the new measurement format and adjusts the
trace and the scale of the vertical axis accordingly. The current measurement
format is part of the status line information (
)
Magnitude / dB Mag
Shows the magnitude of the transmission or reflection in dB. The diagram is a
Cartesian diagram with a logarithmic vertical axis. The horizontal axis represents the
measured frequency range.
The magnitude format is the default format for all measurements.
Available for all measurements.
Phase
Shows the phase characteristics of the DUT in degrees. The diagram is a Cartesian
diagram with a linear vertical axis. The horizontal axis represents the measured
frequency range.
In the default state, the R&S FSH shows the phase only from -200° to +200°. In that
case, the R&S FSH displays measurement results correctly only if the phase difference
between two adjacent test points is less than 180°.
You can unwrap the phase to expand the range of the phase.
M
Press the AMPT key.
M
Press the "Range" softkey.
M
Select the "Phase Wrap" or "Phase Unwrap" menu item.
Available for all vector measurements.
Simultaneous display of magnitude and phase characteristics
Selecting the "Mag Phase" format results in a split screen that shows the
magnitude characteristics in the upper screen and the phase in the lower screen.
