View Single Post
  #19   Report Post  
Posted to rec.crafts.metalworking
Rich Grise
 
Posts: n/a
Default Another 'scope question

On Fri, 10 Feb 2006 20:36:01 +0000, Chuck Sherwood wrote:

Using the VAR knob in the center of the time/div knob I can adjust the
display to show exactly 10 divisions.


Once you move the VAR knob off the cal position you have lost the ability
to measure time on the X axis or peak voltage on the Y axis.

So in your case you really don't know how long each division is. Put the
VAR know back on its detent and select the best scale. Then you can read
the period off the X axis. If you vertical knobs are in the cal position
you can read the peak voltage off the Y axis.

You really should find a book that shows you how to do this.


From reading the original post, it sounds like the time-base is spot-on,
and the cal. oscillator is a little under 1 KHz. 10 X .1 ms = 1 ms, and
1/1ms = 1Khz.

Cheers!
Rich