Channel 1: Now doing digital modulation !!!

--------Single tone setup : 

Before mod: 

After mod: 

Mod and data acquisition: 

Ps: make sure custom is on. 

at dc: when signal = lo 

After 4qam mod :

waveform of modulated signal ! 

Zoom in: 

I

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1) checking at 190mhz , -60 dB 

2) 16 qam