Hi!
I'm new to using an oscilloscope and am working on getting a steady image of a wave form to observe.
I am hoping someone can provide feedback on my "technique", and help answer a few questions. I don't come from a science/engineering background, so some basic concepts might take me a while to grasp. any help appreciated!!!
I am using a tek 485 scope. My source is an audio file of a square wave form played on my laptop - the sound plays for 3 seconds, and then loops with a slight pause in between loops.
1) Here I start by using the horizontal fine tuning adjustment. I don't understand why this slows down the left/right scrolling of the wave.
http://www.youtube.com/watch?v=hnBpweJ8y1U
2) This is what I think is the right technique ( from what I have read ) . I adjust the trigger voltage level to stop the scrolling. Then to remove the offset duplicate, I adjust the trigger delay.
http://www.youtube.com/watch?v=3Qdr_5nvyAk&feature=youtu.be
Why is a trigger delay necessary in this case?
3) Once I have a wave, how do I adjust the corners so it is more "Square" around the edges... I could have sworn the guy I bought this from showed me a way to adjust this. I understand it shouldn't be perfectly square, but shouldn't it look more like the red lines I have drawn below?
Thanks in Advance!
I'm new to using an oscilloscope and am working on getting a steady image of a wave form to observe.
I am hoping someone can provide feedback on my "technique", and help answer a few questions. I don't come from a science/engineering background, so some basic concepts might take me a while to grasp. any help appreciated!!!
I am using a tek 485 scope. My source is an audio file of a square wave form played on my laptop - the sound plays for 3 seconds, and then loops with a slight pause in between loops.
1) Here I start by using the horizontal fine tuning adjustment. I don't understand why this slows down the left/right scrolling of the wave.
http://www.youtube.com/watch?v=hnBpweJ8y1U
2) This is what I think is the right technique ( from what I have read ) . I adjust the trigger voltage level to stop the scrolling. Then to remove the offset duplicate, I adjust the trigger delay.
http://www.youtube.com/watch?v=3Qdr_5nvyAk&feature=youtu.be
Why is a trigger delay necessary in this case?
3) Once I have a wave, how do I adjust the corners so it is more "Square" around the edges... I could have sworn the guy I bought this from showed me a way to adjust this. I understand it shouldn't be perfectly square, but shouldn't it look more like the red lines I have drawn below?
Thanks in Advance!