Instrument Function
R&S
®
SMB100A
219
Operating Manual 1407.0806.32 ─ 21
► To open the "LF Generator / Output" dialog, select "Mod Gen > Configure > LF
Generator / Output" or use the MENU key under "Mod Gen".
The dialog provides access to the configuration of the internal modulation genera-
tors, and you can activate the output of the LF signal
The available settings depend on the source selected and on the installed options.
Alternatively, you can perform the settings also in the correpsonding dialogs of the
analog modulations, like "Amplitude Modulation". The configured LF signal applies
to all modulations which use the internal modulation sources, and to the LF output.
AM Exponential (Instruments with 12, 20, or 40 GHz frequency options)
If you perform exponential AM (
) with the internal signal of the LF
generator, the LF output provides the exponential modulation signal.
Using
, the instrument supplies the distorted external signal. The
signal of the internal modulation generator is not available, as well as setting the
parameters
and
The remote commands required to define these settings are described in
ter 7.13.6, "SOURce:LFOutput Subsystem"
5.5.2.1
LF Output Dialog
LF Output State
Activates the LF output. This setting has no effect on the modulations.
The modulation signal is output at the LF OUTPUT connector of the instrument.
Remote command:
LF Output Voltage
Sets the voltage (peak) of the LF output signal.
Remote command:
LF Gen Freq
Sets the frequency of the LF generator.
This setting affects all analog modulations which use the LF generator as the internal
modulation source.
Modulation Generator and LF Output
