Rohde & Schwarz SMBV100A, Руководство пользователя

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Remote Control Commands
R&S
®
SMBV100A
627 Operating Manual 1407.6062.32 ─ 08
[:SOURce<hw>]:FREQuency:CENTer <Center>
The command sets the center frequency of the sweep. This setting in combination with
the span setting (
[SOURce:]FREQuency:SPAN
) defines the sweep range.
This command is linked to the commands
[SOURce:]FREQuency:STARt
and
[SOURce:]FREQuency:STOP
, i.e. changing these values causes the CENTer value to
change, and vice versa:
CENTer = (STARt + STOP)/2
As with the "Frequency" value entered in the header, the
OFFSet
value is also taken into
consideration with this command. The specified value range is therefore only effective if
OFFSet
is set to 0. The value range for other
OFFset
values can be calculated using
the following formula:
300 kHz +
OFFSet
... RF
max
+
OFFSet
Parameters:
<Center> float
Range:
300kHz to RFmax (RFmax depending on model)
Increment: 0.01Hz
*RST:
300MHz
Default unit: Hz
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.
Usage: SCPI confirmed
[:SOURce<hw>]:FREQuency:LOSCillator:MODE <Mode>
Selects the mode of the local oscillator coupling.
Parameters:
<Mode> INTernal | EXTernal
INTernal
The signal of the internal local oscilltor is used. This mode corre-
sponds to a normal operation.
EXTernal
An external signal is used for path A.
Note: Selection of LO Coupling "External" mode, disables all
parameters in the "Frequency/Phase/Ref Osc" dialog of the
selected path.
*RST:
INT
Example: FREQ:LOSC:MODE EXT
sets the LO coupling mode to External.
Usage: SCPI confirmed
SOURce Subsystem