I have a 1476 oscilloscope 10 mhz.
It's set on ms 2 and I have 7 L's UPSIDE down on display.
I need to know what frequency that is.
I got the probes across the speaker leads.
I don't hear some frequencies and trying to find the ones
I don't hear well. Any tips on this would be appreciated

So the speaker isn't making a tone sound with this waveform?

Is this PC Speaker off the motherboard header connection or a speaker connected to a sound system that is plugged into computers audio jack?

Most problems are fixed by REPLACING the Speaker Setup and you can get low cost ones for less than $20. If its an issue with the sound card then there is a low cost USB Audio Stick you can get to USE that instead of the onboard audio of a computer. I bought 2 of these for computers that have audio issues which were not the SPEAKERS, but the audio PORT or the audio chip messed up, and they work awesome. https://www.newegg.com/startech-com-icusbaudiob/p/N82E16829128004?Description=USB%20Audio&cm_re=USB_Audio-_-29-128-004-_-ProductHere are links about "how to use a scope to measure frequency." from Google.

https://www.youtube.com/watch?v=kCQ6M0fmWG4

https://www.youtube.com/watch?v=UUz0zzGdqII

https://www.tek.com/blog/how-does-an-oscilloscope-measure-frequency

https://www.circuitspecialists.com/blog/taking-measurements-with-an-oscilloscope/

What is see might not be in the audible range. It is not unusual to see stuff on a scope not elated to want you want.
2nd time this Topic has been brought up...did you follow any advice from the 1st one ? ?Hi

Your oscilloscope has 10 divisions across the display and if there is 7 rises and falls across the display with each division = 2ms or 2 khz that would be about 2.4 khz square wave.

If you want to test your hearing the more modem way is with words not tones as explained on this web site
https://www.blameysaunders.com.au/?gclid=EAIaIQobChMI04vi3cr65gIVjIqPCh3ftwqgEAAYASAAEgJmrvD_BwE

There is a test button and you will get a report at the end which is more accurate than a tone test.
Dave,
Thanks for the information
I get a tone at the speaker.I'm guessing it's about 2000 cycles.
It's a circuit made up of a 9v bat 3904 &3906 a cap 2 resisters and speaker.
With my finction gen the sign display is good when I put in a sign wave
and square wave.Mastermind,
Thanks a lot. those 5 sites you gave me were very good tutorials
I,m learning the osc and seems each day something new.Hi

If you are only seeing upside down L's on the screen i.e only the leading edge of the square wave it is possible you have the triggering set to leading edge only or the scope isn't fast enough to display the trailing edge.

Looking at the manual for the scope http://radiorestorer.com/bkt1466scope.PDF

It seems it is an older analog scope in which case it is unlikely to be a trigger setting (there being only 3 trigger settings on page 16) more likely the scope lacks bandwidth to display the trailing edge. It's not a fault just a limitation.