The Deus likes iron especially in the shape of a coin, i. e. Rusty bottle caps, so whatever program you settle into make an exact copy of it changing only the frequency to 4Khz. Store this copy next to your main program. When you come across a good signal switch over to the 4 KHz and check the target. If it is a high conductor the VID number will drop if it stays the same or goes higher it is iron. Remember the ID numbers are different between frequency so you need to activate ID normalize or keep this in mind when switching to 4 kHz. I prefer not to use ID Normalize. Also the deeper the target the less reliable the VID. The Deus will not even give a VID on some of the deeper targets so this method will not work for IDing iron.
After testing and field use I think the deepest preset program is Relic which has very little discrimination. If using little discrimination remember you will need to rely on tones to help ID a target.
My settings are as follows. I started with the relic program, this is an 8khz program, and change the following. You can use whatever tones you want, I prefer 5 tones. This way I can set a high tone notch for nickels. Remember if you are not using ID normalize set-up your tones to match the frequency. I set sensitivity as high as the area will allow but try not to go below 85. You should not need TX power higher than 2. Reactivity 0-2 depending on how trashy the site is, higher for more trash or just swing the coil slower to help separate targets. Remember that even at 0 the Deus's reactivity is equal to if not faster than most high end detectors. Silencer -1 or if too unstable raise to whatever level you prefer, just remember higher silencer settings equals reduced depth. Audio response 5, this helps with hearing the weaker signals. The last thing I do is ground balance with pumping and set manual GB to 2-3 notches below the recommended. These settings are what work for me and are somewhat similar to how I have my other detector set-up. I like to use very little disc so I can hear all the targets and rely on the tones to let me know if they are conductive or not.
