It ground balances like the gp's, exactly like the gpx's(10sec rule with tracking). You pump the coil until you get it as quiet as you can in tracking, then switch to lock/fixed as a quick ground balance.
You use your ear to discriminate judging from the different sounds, tones at certain discrim settings. The Infinium gives three types of sounds, low tone, high tone and warble- where the signal is between the two types of tones. A warble tone is very handy to recognise, and changes/shifts when you use the disc setting. Our australian $2 coin falls exactly on a warble tone in 0 disc, that is way cool. The $1 coin's warble is on about 2 andathird on the disc setting. I don't know if I can get any other common targets/coins to warble, but these are the two coins I mainly look for anyway.
I haven't had the infinium for very long, I'm just reporting on what I've found so far. I will do some tests to see where other coins warble, I've some quarters, dimes and heeps more from other countries, but only those two from the US.
Of course, I'm not saying this will always be accurate, I dug a $2 coin at chest deep that warbled on a disc setting of 2 andthreequarters, where the $1 warbles, but I need to do more tests. So far I found bench testing to be accurate in determining signal tones in field, but we'll see.
All dual field PI's give you a warble if on a target that falls between it's high and low conductivity settings, it's just that with the infinium you can shift these setting a fraction, that seems to be what the disc setting does. I've used Minelab PI's (2000, 3000, 3500 and 4000) and now an Infinium, I haven't used other PI's just so I could be wrong about how other PI's work but they should act the same.
You use your ear to discriminate judging from the different sounds, tones at certain discrim settings. The Infinium gives three types of sounds, low tone, high tone and warble- where the signal is between the two types of tones. A warble tone is very handy to recognise, and changes/shifts when you use the disc setting. Our australian $2 coin falls exactly on a warble tone in 0 disc, that is way cool. The $1 coin's warble is on about 2 andathird on the disc setting. I don't know if I can get any other common targets/coins to warble, but these are the two coins I mainly look for anyway.
I haven't had the infinium for very long, I'm just reporting on what I've found so far. I will do some tests to see where other coins warble, I've some quarters, dimes and heeps more from other countries, but only those two from the US.
Of course, I'm not saying this will always be accurate, I dug a $2 coin at chest deep that warbled on a disc setting of 2 andthreequarters, where the $1 warbles, but I need to do more tests. So far I found bench testing to be accurate in determining signal tones in field, but we'll see.
All dual field PI's give you a warble if on a target that falls between it's high and low conductivity settings, it's just that with the infinium you can shift these setting a fraction, that seems to be what the disc setting does. I've used Minelab PI's (2000, 3000, 3500 and 4000) and now an Infinium, I haven't used other PI's just so I could be wrong about how other PI's work but they should act the same.