SIGLENT SSA5083A, User Manual, Page: 43 / 260

User Manual 13
3 Spectrum Analyzer Mode
The ‘Spectrum Analyzer’ mode is the default mode of the analyzer.
3.1 Frequency & Span
3.1.1 Frequency & Span
Set the frequency-related parameters and functions of the analyzer. The sweep will restart every
time the frequency parameters are modified.
The frequency range of a channel can be expressed by these parameters: Start Frequency,
Center Frequency, Stop Frequency and Span. If any of the parameters change, the others will be
adjusted automatically in order to ensure the coupling relationship among them:
start stop span
stop start center
f f f
)/2 f (f f
− =
+ =
, Where
span
f
is the span.
The LO will sweep from the Start Frequency to the Stop Frequency if the Span > 0, while the LO is
fixed at a constant frequency if Span = 0 ( Zero Span).
Command Format [:SENSe]:FREQuency:CENTer
[:SENSe]:FREQuency:CENTer?
Instruction Sets the center frequency of the spectrum analyzer.
Gets the center frequency.
Parameter Type Float, unit: Hz, kHz, MHz, GHz
Parameter Range 50 Hz~28 GHz
Zero Span: 0 ~ 28 GHz
Return Float, unit: Hz
Example :FREQuency:CENTer 0.2 GHz
Command Format [:SENSe]:FREQuency:STARt
[:SENSe]:FREQuency:STARt?
Instruction Sets the start frequency of the spectrum analyzer.
Gets the start Frequency.
Parameter Range 0 Hz ~ 28 GHz
Zero Span: 0 ~ 28 GHz
Example :FREQuency:STARt 100 Hz