Remote Control Commands
R&S
®
SMB100A
341
Operating Manual 1407.0806.32 ─ 21
[: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
, according to the formula:
f
CENTer
- (f
SPAN
/2) ... f
CENTer
+ (f
SPAN
/2)
with:
f
SPAN
= f
STOP
- f
STARt
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
= (f
STOP
+ f
STARt
)/2
Note:
You can select any frequency within the setting range. The range is defined with
and
.
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
MULTiplier
+ f
OFFSet
... f
max
* f
MULTiplier
+ f
OFFSet
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"
[:SOURce<hw>]:FREQuency[:CW|FIXed]
<Fixed>
Sets the frequency of the RF output signal.
, the instrument operates at a fixed fre-
quency.
In sweep mode
, the value applies to the sweep frequency and the
instrument processes the frequency settings in defined sweep steps.
SOURce Subsystem
