Rohde & Schwarz SMB 100a - Page 235

R&S SMB Command Description
1407.0806.32 6.43 E-2
[SOURce:]LFOutput:FREQuency 0.001 V... 4 V
The command sets the frequency of the LF signal for CW mode (:SOUR:MODE CW mode). The
setting is valid for all analog modulations (AM/FM/PhiM) with internal modulation source and for the
LF Output.
In Sweep mode (SOUR:LFO:FREQ:MODE SWE), the frequency is linked to the sweep frequency. "
Example:
LFO2:FREQ 5kHz
'sets the frequency of the LF generator 2 signal to 5 kHz'.
*RST value Resolution Options Correlation SCPI
1 kHz 0.1 Hz
LFO:FREQ for LFO:FREQ:MODE SWE
linked to sweep frequency
Compliant
[SOURce:]LFOutput:FREQuency:MANual STARt ... STOP
In Sweep mode (SOUR:LFO:FREQ:MODE SWE) the command sets the frequency for the next sweep
step in the Step sweep mode (SOUR:LFO:SWE:MODE MAN). Here only frequency values between
the settings SOUR:LFO:FREQ:STAR and ...:STOP are permitted. Each sweep step is triggered by
a separate SOUR:LFO:FREQ:MAN command.
Example:
LFO:SWE:MODE MAN
'sets the Step sweep mode.
LFO:FREQ:MAN 5 kHz
'sets an LF frequency of 5 kHz for the next step in the Step sweep mode.
LFO:FREQ:MODE SWE
'sets the LF Sweep mode. An LF frequency of 5 kHz is output.
LFO:FREQ:MAN 5.1 kHz
'triggers the next sweep step with a frequency of 5.1 kHz.
*RST value Resolution Options SCPI
1 kHz 0.1 Hz. - Compliant
[SOURce:]LFOutput:FREQuency:MODE CW|FIXed | SWEep
The command sets the instrument LF operating mode and therefore also the commands used to set
the output frequency.
Parameters: CW|FIXed
The instrument operates in fixed-frequency mode. CW and FIXed are
synonyms. The output frequency is set with
[SOURce:]LFOutput:FREQuency.
SWEep
The instrument operates in SWEep mode. The frequency is set using the
commands SOURce:LFOutput:FREQuency:STARt; STOP or MANual.
Example:
LFO:FREQ:MODE SWE
'sets the SWEep mode. The settings under
SOURce:LFOutput:FREQuency:STARt; STOP; MANual become
effective.
*RST value Resolution Options SCPI
CW - - Compliant