- #1
-EquinoX-
- 564
- 1
Homework Statement
I am asked to measure T1, T2, Tbeat, and Tbar using oscilloscope.
Can anyone tell me what these means?
-EquinoX- said:ermmm.. the picture didn't show up
Redbelly98 said:Sorry!
George has posted an equally good picture. But just to prove to everybody that I'm not a completely stark raving lunatic , here is the image I meant to include:
http://www.picotech.com/experiments/sound_interference/graphics/frequency_image.gif
-EquinoX- said:Ok I just realized that T_bar is just the average of T1 and T2, is there a specific way to know this in an osciloscope? Or do I just simply measure T1 and T2 and do the math on paper?
-EquinoX- said:no way to see it on the scope?
George Jones said:I think I can be more clear by using the image
http://en.wikipedia.org/wiki/File:Beating_Frequency.svg,
which should be similar to what you see on the scope when you sum channels 1 and 2.
There are two characteristic time periods in this image, the time between consecutive black peaks, and the time between consecutive orange peaks. Measure both these periods with the scope. Which is which?
-EquinoX- said:you mean one is T_beat and one is T_bar?
-EquinoX- said:in that case the black one is T_beat and orange is T_bar, is this correct?