Rohde & Schwarz SMBV100A - Page 648

Remote Control Commands
R&S
®
SMBV100A
631Operating Manual 1407.6062.32 ─ 08
[:SOURce<hw>]:FREQuency:OFFSet <Offset>
The command sets the frequency offset of a downstream instrument, e.g. a mixer. If a
frequency offset is entered, the frequency entered with SOURce:FREQuency:... no
longer corresponds to the RF output frequency. The following correlation applies:
SOURce:FREQuency:... = RF output frequency + SOURce:FREQuency:OFFSet.
Entering an offset does not change the RF output frequency, but rather the query value
of SOURce:FREQuency:....
Parameters:
<Offset> float
Range: -67GHz to 67GHz
Increment: 0.01Hz
*RST: 0Hz
Default unit: Hz
Example:
FREQ:OFFS 500kHz
sets the frequency offset to 500 kHz.
Usage: SCPI confirmed
[:SOURce<hw>]:FREQuency:SPAN <Span>
This command specifies the span for the sweep. This setting in combination with the
center frequency setting ([SOUR]:FREQ:CENT) defines the sweep range.
This command is linked to the commands [SOUR]:FREQ:STAR and
[:SOUR]:FREQ:STOP, i.e. changing these values causes the SPAN value to change,
and vice versa:
SPAN = (STOP - STARt)
Negative values for SPAN are permitted; STARt > STOP then applies.
Parameters:
<Span> float
Range: 0 to RFmax
Increment: 0.01Hz
*RST: 400MHz
Example:
FREQ:CENT 400 MHz
sets the center frequency of 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.
Usage: SCPI confirmed
SOURce Subsystem