So the real question was adjusting it and is there a video or recording of sounds. I am not sure if there is a video out that lets you listen to a CZ's tones. I have not searched for an on-line video. There may be one that someone posted. So lets do some set up and testing to hear things.
It was already mentioned about reading the manual and ground balancing. I use the bobbing method in autotune just like the manual explains it.
From there set the controls like the manual suggests for a starting point. Get an iron nail, make sure it isn't plated so it shows up as iron; a plated nail may show up mid-tone. Get a small piece of foil, a gum wrapper works, some tabs of more than one shape and size if you can find an assortment. Get a penny, nickle dime and a quarter.
With the detector, find a spot on the ground that does not have targets. Lay the sample targets you have on the ground, either one at a time or all down, but spaced apart enough that you can swing the coil over just one target at a time.
Like Dan-Pa mentioned, sweep slow. Can sweep fast and find things but not as deep and not with an accurate ID. Fast sweep also masks more good targets. Practice will help you learn how the detector reacts at differing swing speeds.
I'd change from the preset (coins mode) to accept all, no notches in discrimination mode and listen to the tones on all targets.
Then you can listen to tones on all the test targets and they won't be notched out.
On the nail, a low tone. Try sweeping fast over the nail. Iron can go high tone when you sweep fast. Does this more when you sweep across the length of the nail. Try it and see how it responds. If your nail doesn't go high tone with a fast sweep, see if you can find a slightly bigger nail and try it again. Most iron nails, more so when they get rusty, bounce to high tone with a fast sweep. Slow the sweep down to get low tone and you are learning about figuring out what the detector tells you.
Try the other targets. Some nickle mid to high tone bounces can be gold, or foil or tabs. some low to mid-tone bounces can be foil or gold. At the beach I dig every low to mid tone bounce.
My CZ's don't have notches, I've got the older CZ versions On the detectors that I have that have notches, I don't use them. I prefer to take in all the details and use the information presented by the detector and how I sweep the target to make the dig or don't dig decision.
Hope this helps.
Cheers,
tvr
PS ... with the three tones, there is enough separation between the tones that you should be able to hear the three tones and learn them pretty quickly. You do need to not notch anything to hear all three tones. Low tone is iron, and the rest have been talked about in this thread.
