AD2 Network Analyzer Differential Sweep

[Nurseda]

Hello,

is it possible to sweep both channels of the Waveform Generator (W1 and W2) where  W2 = - W1 (synchronized) and choose W1 for the transmission line relative to Channel2. I need this for the Bode plot of an op amp circuitry with a differential Input stage.

Many thanks in advance,

Nurseda

[attila]

Hi @Nurseda

You could select in Network Analyzer, Wavegen/External and configure a synchronized slow sweep in Wavegen for the two channels. With the same configuration but setting negative amplitude for one channel, like this:

 

For logarithmic bode on more decades you can use the following script to adjust the sweep range:

function setFreq(hz1, hz2){
    Wavegen1.Channel1.Sweep.Frequency.Start.value = hz1
    Wavegen1.Channel2.Sweep.Frequency.Start.value = hz1
    Wavegen1.Channel1.Sweep.Frequency.Stop.value = hz2
    Wavegen1.Channel2.Sweep.Frequency.Stop.value = hz2
}
Network1.run()
for(var hz = Network1.Frequency.Start.value; hz < Network1.Frequency.Stop.value; hz *= 10){
    setFreq(hz, hz*10)
    Wavegen1.run()
    wait(Wavegen1.States.Run.value)
}
Network1.stop()

 

 

[Nurseda]

Thank you very much @attila , this is what I was looking for :)