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Help setting Oscilloscope

WntrMute2

WntrMute2

Super Member
I need help setting an oscilloscope as I am pretty unfamiliar with it. I have gone through much of the tutorials but cannot seem to get a waveform on the screen. I just get a flat line at all the settings. I do have the probe setting to 1X.
Attached are pics of the frequency generator, probe hookup and the o-scope. Any advice would be helpful. I did get it to work recently to help diagnose my pre-amp hum.
I am trying to measure my gain in a phono-stage. But first I wanted to measure the output of the generator alone so I can measure the output of the phono stage.PXL_20210201_151824975.jpg PXL_20210201_151709718.jpg PXL_20210201_151714519.jpg

Thanks in advance.
Dave
 
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Looks like it is set to AC trigger.
The EXT trigger pushbutton isn't "on", is it?
You tried turnin' up the gain (Y sensitivity)?
Is that "X-Y" button "on"? If so, try turnin' it "off".

:)

I usually just push buttons & turn knobs 'til I get what I want. :)


DSC_8083 by Mark Hardy, on Flickr

That said, what primer(s) did you read?
I like "The ABC of XYZ" from Tektronix (FWIW).

Also, the manual for the actual scope (perhaps paradoxically) usually has enough information for rudimentary use for a novice to view a signal. Do you (the OP) have the manual for that scope?

Coupla other thoughts:
What is the output voltage of the little generator?
What probe are you using (attenuated?)
Do you know that the generator has output?
 
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I can't see the output adapter clearly; does the ground clip to the probe connect to the outer shield of the jack and the positive probe connect to a center pin?
 
WntrMute2 said:
Same
Here is the channel 1 calibration.
Click to expand...

That looks like a .2V /div square wave should - in another of your shots it looked like a broken line, not solid. Try adjust the v/div until you can see the tops of that trace, I bet there's a waveform there but it's just off the screen.
 
De-select the CH1 INVert. De-select the CH1/M.

Try a 0.1V/Div vertical setting.
 
Set it to 60 Hz sine wave and measure the AC voltage at the output (p-p or RMS is OK) with a DMM.
It looks like it's got, at least, standard line level output (on the order of a volt).
 
seems like the scope is working since you can get a square on the screen. It remains a flat line on the generator though? What is the generator set to? Do you know for sure that the generator works?
 
gadget73 said:
seems like the scope is working since you can get a square on the screen. It remains a flat line on the generator though? What is the generator set to? Do you know for sure that the generator works?
Click to expand...
It is new out of the box a few weeks ago. Bought from Newark so not a knock-off. I had is set to 1K as close as I could. Small analog dial.
 
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