Keysight U2761A Mode D'emploi page 82

2 Features and Functions
Amplitude-Shift Keying (ASK) Modulation
ASK is a form of digital modulation in which the modulating signal apply
variations in the amplitude of a carrier signal. The amplitude of the carrier signal
varies simultaneously with the modulating signal while phase and frequency
remain constant. In other words, the carrier signal can be assumed as an on and
off switch. You can configure the U2761A to "shift" its output amplitude between
two preset amplitudes using ASK. The rate at which the output shifts between the
two amplitudes is determined by the internal rate generator. An example of the
ASK modulation waveform is shown in the following.
Figure 2-25
To Select ASK Modulation
The U2761A allows only one modulation mode to be enabled at a time. The
U2761A does not allow ASK to be enabled at the same time that sweep is
enabled.
Soft Front Panel Operation
Click Mod
the ASK waveform, configure the settings for the carrier frequency, output
amplitude, offset voltage, and ASK rate.
82
ASK rate
ASK modulation waveform
and then select ASK as shown in Figure 2-26. To output
Keysight U2761A User's Guide