Remote Control Commands > SOURce Subsystem > SOURce:FREQuency Subsystem > [:SOURce<hw>]:FREQuency:CENTer
[:SOURce<hw>]:FREQuency:CENTer <Center>

Sets the center frequency of the RF sweep range.

The range is defined by this center frequency and the specified [:SOURce<hw>]:FREQuency:SPAN, according to the formula:

fCENTer - (fSPAN/2) ... fCENTer + (fSPAN/2)

with:

fSPAN = fSTOP - fSTARt

The center frequency directly relates to the span, and the start and stop frequencies. If you change one of these parameters, the center frequency changes accordingly.

fCENTer = (fSTOP + fSTARt)/2

Note: You can select any frequency within the setting range. The range is defined with the parameters [:SOURce<hw>]:FREQuency:STARt and [:SOURce<hw>]:FREQuency:STOP.

A defined offset and the multiplier factor affect the sweep frequency range and therefore all correlated parameters. The set frequencies are only absolute values, if the offset = 0 and the multiplication factor = 1. The multiplier multiplies the frequencies accordingly, and the offset ≠ 0 shifts the frequencies corresponding to the set value.

300 kHz * fMULTiplier + fOFFSet ... fmax * fMULTiplier + fOFFSet

Parameters:
<Center>
float
Range: full frequency range
Increment: see the data sheet: RF characteristics > Resolution of setting
*RST:depends on model
Example: FREQ:CENT 400 MHz

sets the center frequency for the frequency sweep to 400 MHz.

FREQ:SPAN 200 MHz

sets a span of 200 MHz. This sets the sweep range to 300 MHz to 500 MHz.

Manual operation: See "Center Freq - Frequency Sweep"

 


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