Welcome to the ID and Target Trace Tutorial.
On your map you have a target ID it range from 0 to 99. Targets detected will have an ID of 1 for less conductive ranging all the way up to 99 for more conductive.
You will see how ferrous your target is being classified. The further from the center line, the more ferrous the target is being classified.
This is your ID map section, within this you will see your
Ferrous limits,
When you detect a target you will see a black dot or smudge. The Opacity of the dot actually determines the signal strength. The darker the dot the stronger the signal strength is.
You will also see your Discrimination pattern.
When using a single frequency, there is not enough information to plot the conductive and a ferrous properties, therefore the map is simplified. The Ferrous Limits is disabled. Non ferrous targets will only appear on the center line and the ferrous will be lower to the left. In single frequency the target ID range will be 0-99 for non ferrous and 1-19 for ferrous, with a red ferrous indicator.
Target Trace is a feature that’s worth taking the time to learn. Most targets will give you a distinctive Trace.
The Target Trace will fade after 5 seconds, just like the Target ID does after you detect a target.
The factors that can affect the Target Trace shape, along with where the trace falls on the Map are, Metallic composition, complexity, orientation, depth, swing rate and your frequency settings.
Non ferrous coins will show up as a black dot on the centre line. Less conductive coins like cut or hammered coins will show up more to the left, high conductive coins such as large silver, will show up to the right. Those countries who use ferrous coins, they will not appear on the centre line.
More complex targets that have ferrous and non ferrous properties such as bottle caps will appear further from the centre line but orientation will affect its targets trace.
There are junk targets that can appear on the centre line. Example an aluminum pull tab, They look similar to coin with a distinctive round dot, I did notice in many cases my dot was slightly elongated at times, allowing me to identify them. I dug them out anyway as there is always a small chance of gold reacting similar or you can just use your discrimination pattern to no longer hear them. Doing this, you may still miss targets that share the same Target ID but it’s a great option to use when you want to focus on more desirable finds.
Ground Noise Target Trace, ground noise is caused by hot or mineralized ground that contains a lot of iron. This is a good indication that you may need to Ground Balance or reduce your Sensitivity to deal with your ground conditions.
Bottle caps usually appear in the Lower Preset Ferrous Limits. The preset was designed to capture them and classify them as ferrous. If bottle caps are found outside of these limits, they can be adjusted.
How orientation will affect your Target Trace. As an example they use a bottle cap.
A common beer bottle cap,
If the bottle is lying 45 degrees, the Trace will appear elongated, the detector is seeing the flat shape and narrow sides of object. Which tends to show up in the upper ferrous limits. If you tilt the bottle cap on edge, the detector sees little of the flat surface, therefore appearing in the Upper Ferrous Limits.
EMI electro magnetic interference can also leave a trace, it appears around 0-2 and can be accompanied by a scattered trace.
Now we will look at ferrous large and complex shaped targets. They can often create unusual shaped trace and very with orientation.
An example is a bolt it has a cylindrical shape and the bolt head giving highly conductive properties. In some orientations it can cause the trace to slant down and to the right from the upper ferrous region into the non ferrous region. Sweeping the target from different directions, while checking the target trace can provide a better indication of its ferrous properties.
A thick rusted iron bolt falsifying in one orientation
The same bolt checked from a different angle.
Now let’s look at a low conductive, or weaker target that is being masked or dominated by a close target. These will also create a unique target trace. As an example a low conductor coin next to a stronger or more dominating iron signal. You will notice how the stronger signal will draw up the weaker signal but detect a non ferrous response as well.
Lets look at low conductor coin buried deep in mineralized ground. Mineralized ground creates a challenge for discrimination as the detector sees the target as a mixture of signals from the target and the ground response. This can cause a trace in the upper ferrous limits, on the center line and in the lower ferrous limits, they can sometimes connect by a vertical line.
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