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JamieJ

AWG phase shift

Question

Hello

I am having a problem making a cosine function with my Wavegen. 

I did phase shift 90 degrees to make a cosine function with a sine function and the scope still shows a sine function.

On the graph from the scope, the output voltage is supposed to be 1V on 0 sec. However, with some reason, it does not work.

I updated the Waveform up to date.

Can anyone help me with this? 

Thank you so much for reading this question!

image.thumb.png.809cdaf1476927aebdfb358c6d518b45.png

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Hi @JamieJ,

I believe what you are running into here is on your oscilloscope settings; it looks like you have set the trigger to happen when it crosses the 0V threshold, so the measured cosine wave appears to be a sine wave (which as you noted are the same thing, but with a phase difference). If you wanted it to look like a cosine wave, you will need to set the Level to 1V rather than 0V. This parameter is in the upper right of your second screenshot.

Let me know if you have any questions about this.

Thanks,
JColvin

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