DSO5202P Frequency

loris58

this above was my question
In the two pictures the settings are the same, in the first the frequency is 70Hz as take it from generator wave in the second also the frequency remain at 70Hz  except
VOLT/div for zoom the wave. My question was, why the displayed frequency change?

loris58

Well, I tryed to follow Your suggests, in order,
1)I set coupling NoiseReject the frequency it remain at 70HZ till 100mV V / div (little bit better) then if I go down 100mV I have same problem as describe above
2) I set coupling HF Reject the frequency it remain at 70HZ till 20mV V / div (much better) then if I go down again I have same problem as describe above
In all the cases when magnify the amplitude I see the frequency changements only in the  display window at the bottom while on the beside menu "AUTOSET" the displayed frequency it does not change and so remain stable at 70Hz

loris58

Ok, That's  clear
Thank You

loris58

one more question, the movement of  knob "V0"  how shoul be? by click by click as step by step along the menu or continous linear?