Rohde & Schwarz FSWP Series - Page 53

Configuration
R&S
®
FSWP
53User Manual 1177.5856.02 ─ 07
The remote commands required to configure the frequency are described in Chap-
ter 8.6.7, "Configuring the Frequency", on page 118.
Center Frequency ........................................................................................................ 53
Center Frequency Stepsize ..........................................................................................53
Frequency Offset ..........................................................................................................53
Center Frequency
Defines the center frequency of the signal in Hertz.
The allowed range of values for the center frequency depends on the frequency span.
span > 0: span
min
/2 ≤ f
center
≤ f
max
– span
min
/2
f
max
and span
min
depend on the instrument and are specified in the data sheet.
Remote command:
[SENSe:]FREQuency:CENTer on page 118
Center Frequency Stepsize
Defines the step size by which the center frequency is increased or decreased using
the arrow keys.
When you use the rotary knob the center frequency changes in steps of only 1/10 of
the span.
The step size can be coupled to another value or it can be manually set to a fixed
value.
"= Center"
Sets the step size to the value of the center frequency. The used
value is indicated in the "Value" field.
"Manual"
Defines a fixed step size for the center frequency. Enter the step size
in the "Value" field.
Remote command:
[SENSe:]FREQuency:CENTer:STEP on page 118
Frequency Offset
Shifts the displayed frequency range along the x-axis by the defined offset.
This parameter has no effect on the instrument's hardware, or on the captured data or
on data processing. It is simply a manipulation of the final results in which absolute fre-
quency values are displayed. Thus, the x-axis of a spectrum display is shifted by a
constant offset if it shows absolute frequencies. However, if it shows frequencies rela-
tive to the signal's center frequency, it is not shifted.
A frequency offset can be used to correct the display of a signal that is slightly distorted
by the measurement setup, for example.
The allowed values range from -100 GHz to 100 GHz. The default setting is 0 Hz.
Note: In MSRA mode, this function is only available for the MSRA Master.
Configuring Frequency Characteristics