Ground tracking would have no affect. Recovery delay is what determines how close objects can be detected.
RECOVERY DELAY
Once the recovery delay cycle is started by encountering a target, the V3i will give a certain recovery time" to the process. It doesn’t matter how many targets are in the ground. You decide how many time units the V3i has by how high or low you set the recovery delay. If you give V 100 R/D time units it must use every one. If your detector passes over one target, you must use 100% of the time units before the V3i can process another target. This would be for all targets regardless of being a higher or lower conductor target. If the new target/signal goes above the signal threshold of the older target/signal, then the new one will respond before the old signal is finished and returns to threshold. The down side is when the new signal is weaker than the one being processed it will not be heard until the recovery delay is finished.
A shorter R/D should work better at a site that is more cluttered. Remember the R/D is how long the V3i has to process the first target, and then be ready to process a second target. Lower R/D numbers gives a SHORTER delay and higher R/D numbers give a LONGER delay. Faster recovery doesn’t make the detector go less deep; it's just harder to hear the deep signals as the R/D is shorter.
For a fixed sweep speed, Recovery Delay should INCREASE as coil size increases, to accommodate the longer time on top of the target. Ground Filter speed should DECREASE to accommodate the apparent slow-down in physical sweep speed.
You don’t have to remember at this. Put two targets down, just a little more than a coil width apart and swing at your speed. As you swing, adjust RD until you can hear both targets in both directions. This tells you that as soon as the leading edge of the coil field hits the first target, RD started, and the RD cycle ended and the machine was ready to process before the leading edge of the coil pattern hit the second target.
The RECOVERY DELAY is for the disc mode only. Just for comparison, RD 40-45 emulates DFX target processing and 35 - 40 emulates the MXT RD. Higher Delay numbers make the chirps from nails harder to tell from desirable targets. With deeper coins or targets in the ground it is easier to hear the target with higher numbers as it will make for a longer sound.
Recovery Delay I usually run between 45 and 105 depending on trash or no targets to speak of. Higher Delay numbers, make the chirps from nails harder to tell from desirable targets. With deeper coins or targets in the ground it is easier to hear the target with higher numbers as it will make for a longer sound. A slower sweep of the coil would be required as the Recovery Delay is increased. As the signal that is being processed decays, if another signal is picked up that is stronger than the decaying signal the instrument should sound off on that target. However if it is weaker than the decaying signal then this target will be ignored due to the long recovery delay. As far as making the value smaller I would not drop it below 40 in value as this might cut off some of the signal and not all audio information will heard.
