Rohde & Schwarz FSW13, User Manual

Page: 396 / 1150

Common Measurement Settings
R&S
®
FSW
396 User Manual 1173.9411.02 ─ 19
Reference Level .......................................................................................................... 396
└ Shifting the Display (Offset) .......................................................................... 397
└ Unit ................................................................................................................397
└ Setting the Reference Level Automatically (Auto Level) ...............................397
RF Attenuation ............................................................................................................ 398
└ Attenuation Mode / Value ..............................................................................398
Using Electronic Attenuation (Option B25) ..................................................................398
Input Settings .............................................................................................................. 398
└ Preamplifier (option B24) .............................................................................. 399
Noise cancellation ....................................................................................................... 399
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).
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.
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.
For details see chapter 6.4.1.1, "Reference Level" , on page 393.
Note that for input from the External Mixer (R&S FSW-B21) the maximum reference
level also depends on the conversion loss, see "Reference level" on page 362.
Remote command:
DISPlay[:
​
WINDow<n>]:
​
TRACe:
​
Y[:
​
SCALe]:
​
RLEVel
​
on page 845
Amplitude and Vertical Axis Configuration