Here are a few tips.
1 - Make sure you learn how to ground balance the machine using the bobbing method. It is not hard at all, and takes about 30 seconds to do. Just make sure when ground balancing, that the coil is over a clean area of ground without any metal.
2 - Do not run the sensitivity higher than 2 or 3 in discriminate mode until you have a few hunts under your belt and start to understand what the detector can do. Too many new CZ users crank up the discrimination when they first use it, and the machine, when run hot, can false a lot ( especially if not properly ground balanced) and will also high tone hit on iron more, which tends to frustrate new users. Once you get to a certain level of sensitivity, the depth of the machine levels off ( ie, there is no more depth increase) but the foot print of the coil becomes wider and the edges of the coil are more sensitive to targets. This does lead to falsing in certain situations ( ie, lots of targets in an area, trashy sites, lots of iron, etc.) Much better to dial down the sensitivity in those places. The CZ will run plenty deep at sensitivity level 2 or 3.
3 - When running in discriminate mode, set the level to 0 so you hear ALL targets. You WANT to listen to the iron hits, which are low tones. This way, when the CZ falses on iron and gives a high tone on occasion when sweeping ( along with low tones. This is known as the low tone/high tone bounce) you will be able to hear both low and high tones at level 0 and can make a better decision to dig or not. Lots of people run the CZ on level 1 or higher, which discriminates out iron, but also does not give off the low tone. If running on level 1 or higher, if there is a low tone/high tone bounce, you will only hear the high tone, and think it is a good target and end up digging iron. I only run my CZ's on level 0 in discriminate mode. Sometimes it can be a pain in high iron littered sites, but it can also sniff out coins in between the iron. When you get that nice, soft, repeatable high tone hit, you know you have coin.
4 - Make sure you sweep the target from multiple angles. When you get those repeatable high tone hits from multiple angles, dig em up !
5 - The CZ is a moderate to slow sweep detector. It is not a fast sweep machine like some of the others. Keep the coil low and level, and sweep slow. One of the great things about the CZ is you can scrub the coil on the ground and it will not false ( as long as the machine is set up correctly GB and sensitivity wise).
6 - For the 3D, if you are going to run in enhanced mode, be aware that sites that are trashy ( tabs, aluminum bits, etc.), the machine will ID them as high tone in that mode. If you are going to hunt parks and areas that have trash, use the machine in salt mode. You can try enhanced mode, but it may be too much as the machine is geared in that mode to bring out older coins such as V nickles and Indian Head pennies ( along with some gold), and hit them as high tone.
7 - Remember the CZ has modulated audio. When volume is set at 4 or lower, deeper targets will sound softer. When volume is set at 5 or over, the machine is in audio boost and all targets, loudness wise, sound the same ( ie, both shallow and deep targets will hit at the same volume level). This is more of a preference as to how you want to hear your targets.
8 - HAVE FUN. Once you start to understand this machine and what it can do, you will be very happy with it. And do not be discouraged when you dig a few deep iron targets or nails. I don't think there is one CZ user out there that has not done that before ! When you dig that first, deep old silver coin, and continue to find them, you will be smiling.
JC
