User Manual

The Spectrum Application (RF Measurements)
R&S
®
FPL1000
304User Manual 1178.3370.02 ─ 09
f
max
and span
min
are specified in the data sheet.
For more information see Chapter 7.4.1.1, "Defining the Scope of the Measurement -
Frequency Range", on page 301.
Remote command:
[SENSe:]FREQuency:SPAN on page 762
Start / Stop
Defines the start and stop frequencies.
The following range of values is allowed:
f
min
≤ f
start
≤ f
max
– span
min
f
min
+ span
min
≤ f
stop
≤ f
max
f
min
, f
max
and span
min
are specified in the data sheet.
Remote command:
[SENSe:]FREQuency:STARt on page 763
[SENSe:]FREQuency:STOP on page 763
Frequency Axis Scaling
Switches between linear and logarithmic scaling for the frequency axis.
By default, the frequency axis has linear scaling. Logarithmic scaling of the frequency
axis, however, is common for measurements over large frequency ranges as it enhan-
ces the resolution of the lower frequencies. On the other hand, high frequencies get
more crowded and become harder to distinguish.
Remote command:
DISPlay[:WINDow<n>][:SUBWindow<w>]:TRACe<t>:X:SPACing on page 760
Full Span
Sets the span to the full frequency range of the R&S FPL1000 specified in the data
sheet. This setting is useful for overview measurements.
Remote command:
[SENSe:]FREQuency:SPAN:FULL on page 763
Zero Span
Sets the span to 0 Hz (zero span). The x-axis becomes the time axis with the grid lines
corresponding to 1/10 of the current sweep time ("SWT").
For details see Chapter 7.2.1, "Basic Measurements", on page 97.
Remote command:
FREQ:SPAN 0Hz, see [SENSe:]FREQuency:SPAN on page 762
Last Span
Sets the span to the previous value. With this function you can switch between an
overview measurement and a detailed measurement quickly.
Remote command:
[SENSe:]FREQuency:SPAN on page 762
Frequency and Span Configuration