Is it true that DISCR LEVEL only applies to non-ferrous targets, and DISCR DEPTH only applies to ferrous targets?

[BLISSTOOL]

Is it true that DISCR LEVEL only applies to non-ferrous targets, and DISCR DEPTH only applies to ferrous targets?

- No, this is nonsense, although initially the user can stay with that impression. However, real, the above statement is false misleading information, ie just a myth.

Detailed and accurately explanation of DISCR LEVEL, DISCR DEPTH and DISCRIMINATOR is available on the BLISSTOOL LTC64X user guide:
http://blisstool.com/data/userguides/BL ... nglish.pdf

Please read it and do not trust myths.

Please remember that the BLISSTOOL detector is designed to search for metal objects buried in the ground. It is not intended to search for metal objects in the air. So primary conclusions based on initial air tests may be wrong.

As already mentioned, the purpose of DISCR LEVEL and DISCR DEPTH are DETAILED in the user guide.

DISCR LEVEL applies FROM Ferrous TO non-ferrous targets in its turn from LEFT to RIGHT. The setting of DISCR DEPTH, VIOLATES a smooth linear function of DISCR LEVEL. This last, initially can confuse many people, to the point where they actually understand how exactly work their BLISSTOOL metal detector. Namely: DISCR DEPTH adjusted to what maximum depth to be rejected the PRESET with DISCR LEVEL reject area (objects, targets for rejections). Depending on the exact current user setting of DISCR LEVEL, and depending on the exact current all other user settings of the metal detector, the reject area can only contain ferrous targets (as iron), or ferrous (black) and non-ferrous (colored) targets simultaneously. At lower levels of DISCR LEVEL, can be rejected only ferrous objects, but at higher levels of DISCR LEVEL, can be rejected ferrous objects (as irons) and non-ferrous objects (usually colored modern pollutants).

Myth: "DISCR LEVEL only applies to non-ferrous targets, and DISCR DEPTH only applies to ferrous targets"

To disprove the above myth, perform the following experiment, or remember this:

/1/ Non-ferrous object with high conductivity and SLIGHT shift in phase, as a foil, tinfoil, may be rejected at great depths only at DISCR DEPTH = 9 or 10, in combination with high level of DISCR LEVEL (4-7);

/2/ Non-ferrous object with low conductivity with high shift in phase, as a coin from material with poor quality and large impurities (bad coin), may be rejected at great depths only at DISCR DEPTH = 10, in combination with high level of DISCR LEVEL (6.5 - 7 - 8) and DISCRIMINATOR = I.

/3/ Small irons are rejected when DISCR DEPTH = 9 or 10 but TOGETHER with DISCR LEVEL (at level minimum 3-5);

/4/ Big irons are rejected when DISCR DEPTH = 1 - 5 - 8 - 10 but TOGETHER with DISCR LEVEL (at level minimum 3-5);

/5/ In the presence of an object distance from 1 cm to about 3 cm (about 1") from the underside of the search coil (there is usually the ground, the soil, the terrain surface), works unique BLISSTOOL ground system (part from SBD technology), which allows the universality of the metal detector, ie work at different sites. Usually the search coil is located at that distance above the ground. At this distance a metallic object can fall only in stupid air tests. For this, detection of metal objects, ie coins, at such distance from the underside of the search coil (from 1 cm to about 3 cm, about 1") is not revealing. For very small objects such microscopic nugget is not a problem.

/6/ To understand the complexity and dependency, make air tests for detection of various objects (little iron, big iron, foil, nice coin, bad coin) in the following settings, and VERY IMPORTANT: Serve the objects at varying distances from the search coil, for example from 5 cm to 50 cm, and monitor the differences in the reaction of the metal detector:

Base settings for all experiments:
GROUND MODE = MAN
GAIN = 6
GROUND FINELY = 5
GROUND RUDELY = 8
TONE = MIN
FREQUENCY = MAX
SILENCER = OFF-2
THRESHOLD = ~ 5.
VOLUME = 4-8

Different settings for several experiments:

1) DISCR LEVEL = 5, DISCR DEPTH = 8, DISCRIMINATOR = III;
2) DISCR LEVEL = 5, DISCR DEPTH = 9, DISCRIMINATOR = III;
3) DISCR LEVEL = 5, DISCR DEPTH = 10, DISCRIMINATOR = III;

4) DISCR LEVEL = 0, DISCR DEPTH = 10, DISCRIMINATOR = III;
5) DISCR LEVEL = 10, DISCR DEPTH = 0, DISCRIMINATOR = III;

6) DISCR LEVEL = 8, DISCR DEPTH = 10, DISCRIMINATOR = III;
7) DISCR LEVEL = 8, DISCR DEPTH = 10, DISCRIMINATOR = I;

8) DISCR LEVEL = 0, DISCR DEPTH = 0, DISCRIMINATOR = III;
9) DISCR LEVEL = 10, DISCR DEPTH = 10, DISCRIMINATOR = I;

10) DISCR LEVEL = ~, DISCR DEPTH = ~, DISCRIMINATOR = ~.

Self performing of these experiments + variations in their settings, will help you very quickly to understand the importance and function of DISCR LEVEL, DISCR DEPTH and DISCRIMINATOR of your BLISSTOOL metal detector.

Please note that the data from air tests you can use for reference only. For real results in fact, you should had a similar experiment in the ground. So, please carry out a thorough self performing experiments and accumulated large real experience with your BLISSTOOL metal detector. This is the best way to remove a lot of questions.