Rohde & Schwarz FSW Series, User Manual

Page: 86 / 371

Configuration
R&S
®
FSW-K7
86 User Manual 1173.9240.02 ─ 17
To display the "Amplitude" dialog box, do one of the following:
●
Select "Amplitude" from the "Overview".
●
Select the AMPT key and then the "Amplitude Config" softkey.
The remote commands required to define these settings are described in chap-
ter 11.4.5, "Configuring the Vertical Axis (Amplitude, Scaling)" , on page 233.
Reference Level ............................................................................................................ 86
└ Shifting the Display (Offset) ............................................................................ 87
└ Unit ..................................................................................................................87
└ Setting the Reference Level Automatically (Auto Level) .................................87
Mechanical Attenuation .................................................................................................88
└ Attenuation Mode / Value ................................................................................88
Using Electronic Attenuation (Option B25) ....................................................................88
Input Settings ................................................................................................................ 89
└ Preamplifier (option B24) ................................................................................ 89
└ Input Coupling .................................................................................................89
└ Impedance ...................................................................................................... 90
Reference Level
Defines the expected maximum reference level. Signal levels above this value may not
be measured correctly, which is indicated by the "IF OVLD" status display ("OVLD" for
analog baseband or digitial baseband input).
The reference level is also used to scale power diagrams; the reference level is then
used as the maximum on the y-axis.
Since the R&S FSW hardware is adapted according to this value, it is recommended
that you set the reference level close above the expected maximum signal level to
ensure an optimum measurement (no compression, good signal-to-noise ratio).
Note that the "Reference Level" value ignores the Shifting the Display (Offset) . It is
important to know the actual power level the R&S FSW must handle.
Input and Frontend Settings