Ground calibration is the basis for ensuring the detector’s operation in difficult conditions, it can be carried out manually or automatically. There is still Tracking, i.e. the function of continuous ground tracking.
Good on clean substrates where mineralization often changes over a short period of time. There is also a downside, false signals can be caught, and objects will need to be swept several times to generate the correct signal. Tracking can get completely lost on magnetic stones or with a lot of ceramics and iron. Large clutter also makes things difficult, it’s all a matter of work algorithms and accompanying filters. Values can be averaged and this is where false signals appear.
Manual tuning gives the greatest guarantee that the metal detector is properly calibrated to the ground. Unfortunately, there are also places where the amount of iron makes it difficult to calibrate manually and automatically, and then it is worth starting Tracking … just do it wisely.
We look at the values and if one value is scrolling all the time, just disable the ground tracking. Ready! We have the value we were looking for. The machine did it for us! It remains to check it from time to time. How? Simply pump the search coil over a clear spot, if the signal changes or you hear an excessive response from the ground, re-tune.
Good positioning is crucial for stable operation and proper signal for a given object and decent depth, and we must remember this every time.