16
The Notch complements the discrimination: it enables a "target window" to be re-
jected whereas discrimination rejects all targets below a selected threshold. For
example, if you detect an undesirable target in the ground, you can decide simply
to reject the corresponding conductivity group and continue to detect targets with
a conductivity higher or lower than those in the rejected group.
If the reference target has a conductivity of 37, adjust with
-
and
+
the Notch at
34-40. All targets with a conductivity of between 34 and 40 will then be silenced.
By default, the width of the rejection window is 6 points.
Notch
SILENCER
SILENCER
NOTCH
NOTCH
EXPERT
EXPERT
MENU
MENU
90
90
37
78
34 - 40
28 - 46
TONES
TONES
T.ID
T.ID
G.ID
G.ID
B.Caps rejects the rusty beer and zzy drink bottle caps effectively. Make sure you
activate it on the beach, in parks and polluted zones.
Adjust the rejection from 0 to 5 with
-
and
+
.
The caps will be rejected better when using a slower sweep. If in doubt, occasionally
slow down the sweep speed over a suspicious target this will help to better identify.
Full Tones assigns tones specic to each target index in proportion to its conduc-
tivity.
The higher the conductivity index of a target, the higher the signal.
E.g. aluminum foil (TID 30) will generate a 350 Hz tone, whereas a large silver coin
(TID 95) will generate a 900 Hz tone.
Lower the discrimination to hear the ferrous items and ground with low tone in pro-
portion to their conductivity.
B.CAPS
NOTCH
TONES
B.CAPS
MENU
MENU
9005
9027
FULL
TONES
NOTCH
SILENCER
T.ID
T.ID
G.ID
G.ID
DISCRIMINATION > EXPERT
2
Select
NOTCH
inside
MENU
>
DISCRI
and press
EXPERT
.
This advanced notch function enables you to widen the rejection window in the
event that the undesirable target(s) have a wider conductivity range than the stand-
ard 6-point window. For example, if the undesirable target is generating an ID rang-
ing from 28 to 46, you can use this option to lower the value of Threshold 1 to 28
and increase Threshold 2 to 46.
Multi-Notch
You will notice that the factory programs SENSITIVE, SENSI. FT et FAST, have a rejection window of 23
to 25. The very precise multi-frequency processing of can subtly notch the wet zones in the soil
which generate instabilities, Cokes or false sounds above holes with no target.
Full tones
B.Caps (except Prg. 7/8/9)
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