R&S FSH
Receiver Mode
Selecting the Measurement Mode
Operating Manual 1309.6275.12 - 14
165
6.1.1.2 Customizing the Bargraph Aspects
The bargraph is a graphical representation of the power level with one dimension, the
power level of the receive freuqency. The R&S FSH provides several ways to
customize the aspects of the bargraph.
Selecting the Unit
By default, the unit the R&S FSH uses in receiver mode for the measured power levels
in general is dB
Y
V. In addition to dB
Y
V, the receiver mode provides other units as well.
M
Press the AMPT key.
M
Press the "Unit" softkey.
Select the unit you need.
Defining the Bargraph Scale
The scale of the bargraph is defined by the reference level and the level range.
The reference level is the maximum power level that the bargraph displays. You should
set the reference level in a way that the signal level does not exceed the reference
level and high enough so that the signal does not disappear in the inherent noise.
M
Press the AMPT key.
M
Press the "Ref Level" softkey.
Define the reference level that
best fits the measurement.
In the default state, the reference level corresponds to the level at the right of the
bargraph. The reference level position is shown by a triangle in the bargraph scale
label.
You can move the reference position to another position on the scale.
M
Press the AMPT key.
M
Press the "Range/Ref Pos" softkey.
M
Select the "Ref Position 10…" menu item.
The R&S FSH opens an input field to define the reference position.
M
Enter the number of the grid line you want the reference level at.
The range is from 0 to 10. "0" corresponds to the left side of the bargraph, "10"
corresponds to right side of the bargraph.
You can also select the level range that the bargraph covers. In the default state, the
bargraph covers 100 values of the unit you have selected (e.g. 100 dB
Y
V).
M
Press the "Range / Ref Pos" softkey.
The R&S FSH opens a submenu to select the level range.
M
Select the level range you need.
The R&S FSH adjusts the bargraph accordingly.
