9
Upon localization of foil, aluminium and unstained iron,
ID1
and
ID2
have their negative
values, and both of them have great positive values express when the nonferrous metal is pure,
without admixtures and alloys – gold, bronze, copper, silver. Upon localization of highly stained
iron,
ID2
has great negative value, for example -15 -20, and the indication of
ID1
is around zero
or +1, +2. They show that there is no sense this signal to be checked where it comes from. Foil,
aluminium and aluminium alloys usually provoke signals around zero – for example „
ID1 +2“
and „
ID2 -5“
. One has to also take into consideration that these indications can change through
setting of „o
ID1“
and
„oID2“
of the menu.
ID1
and
ID2
can have different values if within the range of the coil there is both
nonferrous and ferrous metal or some alloy.
The
ID1
and
ID2
coefficients appear only upon localization of metal, also in the
„VCO“
mode, but in that case sound is multi – frequent one for more comfortable
determination of the location of the object.
Upon localization of an object, if the common signal becomes louder than „
Level:
350“
, the sound changes into a very low deep tone and on the first 2 rows to the right there
appears the following: „
discr overflow“.
The digital indication continues to track the
increase and if the level „
Level: 1000“
of overflow is achieved, then the sound changes
into a very high signal tone, and the display shows „
OVERFLOW“
on the 4
th
row of the
display.
In the modes of discrimination, „
Thresh“
determines the minimum level of the
signal after which there starts calculation of the coefficients „
ID1“
and
„ID2“.
It cannot
have values smaller than „
5
“ in order to cooperate the sound signal of the discrimination at
a comparatively low signal from the object. This is developed to avoid eventual error upon
discrimination of very weak signals.
In
„NORMAL DISCR“
mode on the 2
nd
row to the left of the display the balance
indicator appears „
|-|
“ for the background of the soil and shows whether the device is
balanced at lack of signal. At a balanced device and lack of metal objects within the range
of the coil, the indicator has to have 2 equal levels both from the left and the right side of
