Iron Bias Setting Audio Response

[Jackpine]

According to the Manual the iron bias affects  TID readings, but it doesn't mention whether or not it has any effect on the audio characteristics of the TID observed.

My first thought was that the effects on TID readings using iron bias were divorced from the audio characteristics.

Then I read this:

Quote

In environments with dense iron trash, a higher Iron Bias is

recommended in order to mask them. In areas where you do not

want to miss any non-ferrous targets amongst iron trash, a lower

setting is recommended. This will cause more ferrous targets to be

detected and identified as desirable non-ferrous targets

 Sounds to me like a multi stage filtering similar to the Fisher 1236 X2 iron silencer, If so setting it to zero will be the only option for dissecting iron.

Comments?

Tom

 

[EL NINO77]

Iron bias - it is filter -short signals audio -for unmask ,type- silencer-xp bottle cap reject- whites.....in minor setting  Iron Bias + optimum recovery  speed- it is unmask better...in iron sities.... Great "vizual-audio"  test for optimum setting iron Bias its :7 X small -medium coin  and 8 X-4" nails about in Line...,..2 .test  coin beside horseshoe, 3.test nailboard test..

[Chase Goldman]

I am pretty sure it affects audio target ID too, especially in 50 tone mode.

[EL NINO77]

In 2 tone, 5 tone ,50 tone,...tone ID..

[Jackpine]

11 hours ago, EL NINO77 said:

Iron bias - it is filter -short signals audio -for unmask ,type- silencer-xp bottle cap reject- whites.....in minor setting  Iron Bias + optimum recovery  speed- it is unmask better...in iron sities.... Great "vizual-audio"  test for optimum setting iron Bias its :7 X small -medium coin  and 8 X-4" nails about in Line...,..2 .test  coin beside horseshoe, 3.test nailboard test..

I agree, iron bias at minimum with correct recovery speed should be the better unmasker.  I don't do the tests, what it does in my iron sites is what matters.

Tom

[EL NINO77]

In Whites Spectra V3  bottle cap Off/ and bottle cap  On / seting1 its big diference for  unmask coin in iron...depend on location  iron and coin,  -produces better "full range"  signal iD and audio ouput...better-bledy audio....In Argo  and  Optima  i use  minor "mask"-iron bias  2-3.max for better  unmask...