Target Id; Audio; Iron Cancel/Discrimination - White's GOLDMASTER Series Owner's Manual

GMX Controls

Target ID

The GMX features two types of Target ID. The most obvious is the large numbers
displayed in the center of the screen when the coil passes over a target. These two digits
represent a scale from 0 to 99, with higher numbers equalling a higher chance that the
target is non-ferrous.
In challenging ground, or when gold is located in host rock, it's important to dig every
questionable signal. Sometimes very small gold can produce a low Target ID number,
or in the case of sub-grain-sized nuggets, no number at all. This is why many electronic
prospectors hunt mostly based on sound.
In addition to this, the top most bar of the screen displays a general scale of targets. You
can see that gold has a large range, due to the many different sizes, shapes, and consist-
encies of gold nuggets. When in doubt, dig it out!
Target ID #
Higher number,
Better chance of gold
"Beep" Mode
Audio Mode
Selection
Audio Mode
Tapping the Music button toggles between two different audio modes. With the Music
Icon ON, the GMX will produce 2 distinct beeps, one high and one low, for different
types of targets. The higher tone has a better chance of being a non-ferrous target (gold,
aluminum, silver, brass, etc.), and the lower tone has a better chance of being ferrous
(iron, hot rocks, etc.).
With the Music Icon OFF, the GMX will produce a standard VCO all-metal "zip" sound
on targets. This mode is generally preferred by experienced prospectors due to the nu-
ances of the sound and perceived sensitivity to small targets.
All settings (SAT, Volume, Threshold, Iron Cancel, etc.) have the same effects in both
audio modes. This allows for maximum flexibility for different users.
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Visual Target ID