R&S FSH
Network Analyzer Mode
Evaluating the Results
Operating Manual 1309.6275.12 - 14
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Changing the reference value
Changing the reference value works like an attenuation or gain in that it moves the
trace to another level. The R&S FSH adjusts the scale of the vertical axis accordingly.
The R&S FSH indicates the value and position of the current reference value with a
triangle at the vertical axis (
). In the default state, it is 0 dB and its position is the
grid line at the top of the diagram.
The reference value only changes the 0 dB reference without actually attenuating or
amplifying the signal level.
When changing the reference value, make sure that you do not overload the
R&S FSH. As long as the trace is completely within the diagram area and the
reference position at the top of the diagram, the risk of an overload is eliminated.
M
Press the AMPT key.
M
Press the "Ref" softkey.
The R&S FSH opens an input field.
M
Enter the reference value you need to see the trace completely.
The R&S FSH moves the trace accordingly, relabels the vertical axis and shows
the new 0 dB reference in the hardware settings display.
Changing the reference position
Changing the reference position moves the position of the reference value up or down.
The reference position also moves the trace up or down. The levels and the reference
value, however, remain the same. The default reference position is the grid line at the
top of the diagram. The reference position is indicated by a triangle at the vertical axis
(
).
The reference position is a number between 0 and 10 with 0 being the grid line at the
bottom and 10 being the grid line at the top of the diagram.
M
Press the AMPT key.
M
Press the " Ref Pos" softkey.
The R&S FSH opens an input field.
M
Enter the new position of the reference value.
