R&S FSH
Getting Started
Using the Spectrum Analyzer
Quick Start Guide 1309.6269.12 - 09
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Setting the reference level
The level at the top of the measurement diagram is called the reference level. To
obtain the best dynamic range from the R&S FSH, you should use its full level range.
That means that the maximum level value should be at or close to the top of the
measurement diagram (= reference level).
► Press the AMPT key.
► Press the "Ref Level" softkey.
► Enter a reference level of -30 dBm.
The R&S FSH reduces the reference level by 10 dB.
The maximum trace value is close to the maximum scale value of the measurement
diagram. The increase in the displayed noise floor is minimal. The difference between
the signal maximum and the displayed noise (i.e. the dynamic range) has, however,
been increased.
Using Markers
The R&S FSH has markers to read out signal levels and frequencies. Markers are
always positioned on the trace. Both the level and frequency at their current positions
are displayed on the screen.
► Press the MARKER key.
The R&S FSH activates a marker and puts it on the maximum value on the trace.
A blue vertical line represents the position of the marker on the horizontal axis (e.g. the
frequency).
A small blue horizontal dash represents the marker position on the vertical axis (e.g.
the level).
The R&S FSH shows the coordinates of all markers in a table above the diagram.
