Modulation General Parameter; Modulation Types And Associated Parameters - Teledyne T3AWG3K Series Operator's Manual

Marker out (blue, top) synchronous with the modulating waveform of the AM (red, bottom)

Modulation General Parameter

•
Frequency [Hz]: it defines the modulating frequency. It can vary between 500 uHz and 50 MHz.
•
Source: the source can be Internal or External. If Internal is selected it is possible to select a
Shape. If External is selected the instrument accepts a modulating signal from the Ext. Mod.
SMA connector.

Modulation Types and associated parameters

•
Amplitude Modulation (AM): the amplitude of the carrier waveform is modulated following the
modulating shape. It is available for all functions except for the Pulse.
The parameter Depth [%] controls the modulation depth between 0% and 120%.
•
Frequency Modulation (FM): the frequency of the carrier waveform is modulated following the
modulating shape, it is available for all functions except for the Pulse.
The parameter Deviation [Hz] defines the deviation of frequency with respect to the carrier
frequency. The Deviation is between 0 Hz and the maximum frequency that satisfies the
following 2 relationships:
- �������������� ������������������ − ������������������ > 0 ����
- �������������� ������������������ + ������������������ ≤ �������������� ������������������
Where the Maximum Frequency depends on the selected carrier. To know the maximum
allowed frequency for each function, please refer to the Predefined Waveforms chapter.
For example, for a sine function at 200 MHz the Deviation must be below 200 Mhz.
•
Phase Modulation (PM): the phase of the carrier waveform is modulated following the
modulating shape. It is available for all functions except for the Pulse.
The parameter Deviation [deg] set the maximum phase deviation of the carrier waveform. It
can vary in the range 0 to 360 degrees.
•
Frequency Shift Keying (FSK): this modulation is a 2 level FSK. The carrier frequency switches
between the initial carrier frequency and the initial carrier frequency + Hop Frequency [Hz]. It is
available for all functions except for the Pulse.
Note that the Hop Frequency can be negative and it must satisfy the following conditions:
Operator's Manual Simple AFG Application
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