First, make sure the coil cable is tightened to the control head. If you leave threads exposed, the detector will send false signals.
Then do this:
1. When you first get to the beach, go to an area where you plan to detect and turn the detector on.
2. Wait about a minute. Then hold the detector about an inch above the sand, and hold down the power button for ten seconds until you hear two beeps. This resets the detector.
3. Put the detector in Zero Pro mode.
4. Set the iron audio to off.
5. Run the discrimination up to 30
6. Start detecting.
7. If you start to get false signals, drop the sensitivity down two notches.
8. If you move to a different density of sand and start getting false signals, press and hold the ground balance button while moving the coil up and down about two inches above the ground.
When you move to a new beach, start with #1 above.
Bill