Gold Bug Pro Manual - Fisher

GROUND BALANCINGUnderstanding ground conditions assists the user in setting up the machine,knowing when to readjust ground balance, and in understanding the responsesof the machine while searching.This detector displays two kinds of ground data:1. The type of mineralization (which affects where the ground phase shouldbe set). This is GND PHASE2. The amount of mineralization (the greater the amount of mineralization,the greater the loss of detection depth & ID accuracy; this loss is morepronounced in Discrimination Mode). This is Fe 3 O 4 .The goal of ground balancing is to equate the GND BAL number to thePHASE number.PHASE is the measurement of the ground.GND BAL is the detector’s internal setting which calibrates the detectorto the ground’s phase.Notice that the GND BAL number is three digits, with a decimal point.PHASE has only two digits.GND BAL is a higher resolution number, so may differ a bit from PHASEin a perfectly balanced scenario.After pumping and releasing GG, the exact measurement of the groundwill be transferred to the GND BAL setting.The two-digit PHASE number displayed on the screen indicates the type ofground mineralization.Some typical ground mineralization types are:0 – 10 Wet salt and alkali5 – 25 Metallic iron. Very few soils in this range. You are probably over metal.26–39 Very few soils in this range -- occasionally some saltwater beaches40–75 Red, yellow and brown iron-bearing clay minerals75–95 Magnetite and other black iron mineralsGround Balancing continued on next page23