R&S FS300, Operating Manual, Page: 118 / 248

Spectrum Analyzer R&S FS300
E-1007.9900.15 6-118 Operating manual, 02/2006
6.2.3.7.1 Manual Entry of Reference Points
Use
There are two methods you can use to find level differences from the trace.
The first method is to define a reference point on the trace using marker 1 (
6-98).
The second approach is entering arbitrary reference points inside and outside
the measurement diagram.
When you enter arbitrary reference points the M1 marker values are frozen.
Instead, the R reference values are displayed in the parameter field. The M2
marker values indicate the level difference referred to the reference point.
Activating entry of
arbitrary reference
points
1.
Press the
function key
in the
submenu.
It is now not possible to move marker 1. The M1 marker values are fro-
zen and are used as fixed reference values R.
Entering reference
point levels
2.
Press the
function key
in the
submenu.
An entry field containing the current setting (frozen marker level) is dis-
played.
3.
Enter a new value in 0.1 dB steps ( 5-60).
The entry range for the reference-point level is:
-200 [dBm]
≤
Ref point level
≤
+200 [dBm]
The new setting is saved and displayed in the diagram area. The value is
not displayed if it is outside the diagram area.