R&S FSH
Using the Display Line
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E-11
Using the Display Line
In addition to the markers, the R&S FSH provides a horizontal line for determining the signal level in the
display.
Press the MEAS key.
Press the DISPLAY LINE softkey.
The R&S FSH displays a horizontal line across the
entire diagram. To distinguish it from other lines, it is
labelled 'L'. The Y position of the line is indicated at the
top left of the diagram (Line: -53 dBm in the diagram
shown at the right).
The line can be moved in the Y direction with the
cursor keys or the rotary knob, or a level position
can be entered with the numeric keys.
Terminate the entry with the ENTER key.
The softkey label DISPLAY LINE is printed on a green
background and the entry box is cleared.
In contrast to the markers, the position of the displayed line is pixel-oriented. The line resolution in the Y
direction therefore depends on the measurement range set in the Y direction. For a display range of
100 dB, it is 0.5 dB. When the line is set with the rotary knob, the R&S FSH always uses the step width
of the display resolution in the Y direction, e.g. 0.5 dB for a 100 dB level measurement range. The
cursor keys, on the other hand, always move the line by 10 % of the display range in the Y direction.
For fast setting of the display line, we therefore recommend to set the line near the desired position with
the cursor keys and then to use the rotary knob for fine adjustment.
