R&S SMB100A Operating Manual page 356

®
R&S SMB100A
[: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
FREQuency:SPAN, according to the formula:
f
CENTer
with:
f
SPAN
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.
f
CENTer
Note: You can select any frequency within the setting range. The range is defined with
the parameters
FREQuency:STOP.
A defined offset and the multiplier factor affect the sweep frequency range and there-
fore all correlated parameters. The set frequencies are only absolute values, if the off-
set = 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 * f
Parameters:
<Center>
Example:
Manual operation:
[:SOURce<hw>]:FREQuency[:CW|FIXed] <Fixed>
Sets the frequency of the RF output signal.
In CW mode, see
quency.
In sweep mode
instrument processes the frequency settings in defined sweep steps.
Operating Manual 1407.0806.32 ─ 21
- (f /2) ... f + (f
SPAN CENTer
= f - f
STOP STARt
= (f + f )/2
STOP STARt
[:SOURce<hw>]:FREQuency:STARt
+ f ... f
MULTiplier OFFSet
float
Range:
Increment: see the data sheet: RF characteristics > Resolution
*RST:
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.
See "Center Freq - Frequency Sweep"
FREQ:MODE
FREQ:MODE
/2)
SPAN
* f + f
max MULTiplier OFFSet
full frequency range
of setting
depends on model
CW|FIXed, the instrument operates at a fixed fre-
SWE, the value applies to the sweep frequency and the
Remote Control Commands
SOURce Subsystem
[:SOURce<hw>]:
and
[:SOURce<hw>]:
on page 179
341