R&S FSH
Spectrum Analyzer Mode
Configuring Spectrum Measurements
Operating Manual 1309.6275.12 - 14
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When measuring the distance-to-fault, the horizontal unit is meter or feet. For all other
measurements the horizontal axis is the frequency axis. The unit of the vertical axis is
dB for distance-to-fault and cable loss measurements and dBm for all others.
The position of a delta marker is indicated by a dashed line to distinguish it from a
normal marker. The delta marker level is always a relative to the main marker level and
so the delta marker level unit is always dB. The delta marker frequency is always
relative to the main marker – in other words, the delta marker frequency is the
frequency difference between the frequency at the point marked by the main marker
and the frequency at the point marked by the delta marker.
To measure complex signals, you can activate up to six markers. Marker 1 is always a
normal marker and the reference of all delta markers. Markers 2 to 6 are either
markers or delta markers depending on your set up.
Screen Layout with Active Markers
1
Marker list
2
Marker label: M(x)
3
Delta marker label: D(x)
4
Active marker label (red label)
5
Delta marker (blue dotted line)
6
Marker (blue line)
7
Marker input field
8
Marker menu
2.2.6.1 Positioning Markers
M
Press the MARKER key.
The marker menu opens.
If, as yet, no marker has been activated, the R&S FSH automatically activates the
main marker and positions it on the maximum level that has been measured. In
addition, the marker frequency input field opens.
