Vector Network Analyzer
R&S
®
FPC
181
User Manual 1178.4130.02 ─ 07
The R&S
FPC couples the frequency and span settings across all measurements.
18.3
Amplitude Configuration
Access
: "Ampt"
Access
: "Setup" > "Config Overview" > "Amplitude" (selected settings)
Remote commands to configure the amplitude:
●
The R&S
FPC provides several methods to adjust the scale of the y-axis in the mea-
surement diagram.
Defining the reference value
The reference value defines the amplitude of the reference line. The unit of the refer-
ence is dB.
The R&S
FPC indicates the position of the reference value with a triangle at the verti-
cal axis (
).
1. Press the "Ampt" key to open the amplitude menu.
2. Select the "Reference" menu item.
3. Define the level of the reference value in dB.
The R&S
FPC adjusts the scale of the y-axis accordingly. The position of the trace
in the diagram remains the same. The position of the reference line in the diagram
also remains the same.
Defining the position of the reference line
The reference position defines the position of the reference line in the diagram. The
reference position is a linear value between 0 and 10. Each value represents one hori-
zontal grid line of the diagram. 100 corresponds to the grid line at the top of the dia-
gram, 0 corresponds to the grid line at the bottom.
When you change the reference position, the R&S
FPC also shifts the position of the
trace by the magnitude of the reference position change. It has no effect on the refer-
ence value itself.
1. Press the "Ampt" key to open the amplitude menu.
2. Select the "Range/Ref Pos" menu item.
3. Select the "Ref Position" menu item.
4. Select the line in the grid that corresponds to the reference value.
The R&S
FPC adjusts the position of the trace and the position of the triangle that
indicates the reference position. The scale of the y-axis remains the same.
Amplitude Configuration
