The first thing I do is check to see if my settings are right. This is where I start.
1 - gain; I start with it set on 10
2 - pulse delay; I set on 10
3 - Ground balance; I start at 6
4 - GEB switch; on
5 - Threshold; set this as low as you can, but still be able to hear it.
6 - Target conductivity; set on - all
7 - Frequency; set all the way to minus, may have to adjust if there are power lines around.
When you first start you ground balance procedure make sure you batteries are at, or close to full, all three lights should be lit.
Once you have set threshold as low as you can go and still hear it, sweep over an small area to make sure there is no metal in the ground, this is where you will ground balance the detector.
Once you have a clean spot , raise the loop roughly 14 to 16 inches off the ground, then lower it to the ground, be sure to keep the loop flat to the ground. Listen for any changes in the background signal. If the pitch of the signal increases as you go toward the ground, turn your ground balance knob clockwise. Keep raising and lowering the loop as you turn the knob, you will notice the signal will go from a high pitch to a lower pitch. To get the correct balance, you want adjust the balance knob to where there is no change in the signal pitch as you raise and lower the loop.
gain - what's it do
to be continued