How to take what i want in the scope read from NI5112?

[gpibssx]

Pls see the attachment. It is the waveform read from DVD-vIDEO output using NI 5112. Now i want to the voltage for V1 and V2 using my LV programm. How can i realize it? Thanks a lot!!

[Evan]

I suggest using the Amplitude and Level Measuring Express VI. It will tell you the maximium and the minimuim value. So you can then calculate the V1 and V2.