LF Generator and LF Output - Mod Gen Block R&S SMB
1407.0806.32 4.76 E-2
LF Generator and LF Output - Mod Gen Block
An LF generator providing sinusoidal + square signals in the frequency range 0.1 Hz to 1 MHz is
available for the basic unit without additional equipment options.
The internal LF generator is the internal source for the analog modulations AM and FM / PhiM, and as
the signal source for the LF output at the front of the instrument.
The LF generator settings can be made both in the modulation menus and in the LF Output menu. The
settings are effective for all modulations using the internal modulation source. For example, a change to
the frequency of the LF generator automatically has an effect on AM modulation if internal source is
selected as the AM modulation source (i.e. Int is selected as Source).
The LF Sweep mode is activated in the LF Sweep menu. RF frequency and level sweeps are activated
in the respective menus of the RF block.
Option Pulse Generator, R&S SMB-K23, enables the generation of single and double pulse signals.
The generator is activated and configured in the Pulse Generator menu of the LF output block or in
the Pulse Modulation menu of the Mod block (Pulse Generator is selected as Source).
LF Frequency Sweep Menu
The LF Frequency Sweep menu is opened in the Mod Gen function block or using the MENU key
under LF Gen.
In the top section, the LF Sweep mode is activated and the sweep mode is selected. The buttons are
used to reset the LF sweep (all sweep modes) or to execute the LF sweep (Single mode).
The sweep range, sweep spacing and dwell time are set in the bottom section.
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