Hello Guys,

I am sending in a sine wave signal of 2260 Hz to the low pass filter and then it goes to comparator which converts the sine wave to square wave. This square wave is sent to Teensy 3.6 microcontroller for processing. Just to let you know, we cannot change the LM 339, it is fixed. Is there something I should tweak to get a good looking square wave? It still does give what I want. I am just curious to why it looks like that.

Hope you can shine some experience on this question.

Thanks,
M

 

Is your scope probe calibrated?

 

hi mem,
Have you tried setting the adjustment screw on the scope probe body.? While watching scope screen.
E

 

First, connect your probe to the "probe comp" terminals on the front of the scope, and follow the instructions in the "probe compensation" section of the manual.

 

hi mem,
Have you tried setting the adjustment screw on the scope probe body.? While watching scope screen.
E

I am gonna try that know and will let you know.

 

hi mem,
Have you tried setting the adjustment screw on the scope probe body.? While watching scope screen.
E

Lol it worked. I never knew about this screw thing. I just read also about probe compensation like you guys mentioned. Learnt something new today. Thanks eric and Ian