Oscilloscope calculations

[jknightandkarr]

Ok just to make sure i am doing this right on my Instek GOS-620 scope.

Volts= No divisions × volts/div x probe setting

My case v= 2.0 x 0.1 x 10 so v=2. Now freq is #of div/cycle × time/div i have t=6.6 x 50us=330us n freq=1/t or 1/330= 3.03 kHz buuuut the signal is the scopes 1kHz, 2Vp-p signal and my multifunction counter says1.04 kHz, so what am i doing wrong?  I know having the counter i don't have to know how to calculate it but nice to know how. Thanks

Joe

 

[jknightandkarr]

Anyone?

Joe

According to estimates I need t to equal like 19.3 not 6.6

 

[pebe1]

According to the manual, there is a control marked 'SWP.VAR' (marked 30 in the diagram that shows layout of controls) that allows the sweep to be made variable.  Have you set it correctly?.