I bought a digital oscilloscope roughly a year ago, I tried to check signal but it flickers, I put 9v battery to the probe hoping to see a constant DC 9V at the screen but I didn't see it. The name of the oscilloscope is DSO Shell 150.

 

Is the ground lead grounded to the negative terminal?

Does the scope have a calibrate output?

 

It triggering set correctly?

 

I don't know how to set it

 

Is the ground lead grounded to the negative terminal?

Does the scope have a calibrate output?

It is grounded, I don't know if it has a calibrate output but I know it has a terminal that square wave and 1khz is written on it

 

Have you even tried to get the user manual..... and read it?

What probes are you using?

 

It is grounded, I don't know if it has a calibrate output but I know it has a terminal that square wave and 1khz is written on it

That is the calibrate port. What happens when you connect your probe to it?

 

That is the calibrate port. What happens when you connect your probe to it?

Yeah thanks. I connected the probe to it I got got different frequency until I turned the knob I got 1khz. How would I know the magnitude if it is correct. Please enlighten me.

 

Hello,

Wich version did you buy?
There is a kit version and an assembled version.
The last page of the manual shows you the use of the scope.
The manual was found here:
https://jyetech.com/Products/LcdScope/e150.php

Bertus

 

There is two types of triggering, if you are trying to look at
a DC signal scope needs to be on "Auto" triggering mode
that always gives you a trace independent of waveform.
As long as you use position controls to make sure its on
screen.

Regards, Dana.