I want to generate an OOK modulated signal like Fig.1 with E4438C Vector Signal Generator.
Carrier 400 MHz
Data rate 100 b/s (Pseudo-random sequence)
I started with AM modulation and set the AM depth to 100%, AM waveform to "square" and AM source "internal".Then, the waveform just like Fig.2.It seems like OOK modulated 1010 sequence.
However, I have a problem with changing data from 1010 sequence to Pseudo-random sequence. Turning on the "custom" below does not work well (Data waveform is not PN23).Fig.3
What can I do to generate the signal in Fig.1?