Rutus Alter71, User Manual

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Hot rock adjustment is simply a slight tuning of the circular scale on which the detector’s
operation is based. In this way magnetic rocks can be set apart from the 0 value and will be
more clearly discriminated (but equally the aluminium canteens will fall into the 0 [-90]
value and
thus are also discriminated). It is equally possible to adjust the values in the other direction:
moving the large aluminium objects to lower identification values (e.g. 118 [+88]) and in this way
increase the effectiveness of detecting these kind of objects but this may result in magnetic
rocks giving a high, fuzzy tone. The factory setting for magnetic rocks correction is set to Neutral
and this is the best setting for 99% of search areas. But if for some reason there is a need to
increase the masking of magnetic rocks, use the button to set it to negative values.
The adjustment of values into the positive range will increase the detection range for canteen in
the Motion mode.
NOTE: After each change to the Hot rock adjustment the detector requires the ground balance
procedure to be repeated.
Reaction
This adjustment gives the ability to select the speed of soil filtering. It is an essential
factor in the ability to detect large, deeply placed objects, the speed of detection and its
resistance to soil mineral contents.
Filters 1 – 2 Used to search for large objects. It can, on occasion, be used to search for
large coins in lightly mineralised soil (sand).
Filter 3 A universal setting, if you are not sure which filter to use – choose this one
Filters 4 – 8 Increasingly quicker filters should be used for searching of small, thin objects
amongst steel junk
Masking
This setting is used to adjust the masking of short signals in the detector’s speaker.
These signals come from the partially discriminated signals of bottle caps, iron, magnetic rocks,
junk etc. Masking improves the quality of Discrimination. For a zero Masking value, the detector
will give produce a tone for all signals, even the shortest ones. Some small steel junk will be
hard to discriminate, the detector will be „noisy” during a search.
As the Masking value increases the operation of the detector becomes less „noisy” and it
becomes possible to search for non-ferrous metal objects amongst iron junk. Some may
assume that Masking should always be set to the highest value, but this is not the case – high
Masking settings can cause a lack of signal for objects on the borders of the range. In clear
terrain, if the user wants to reach as deep as possible, the Masking value should be set as low
as possible.
For each value of the Reaction parameter there is a maximum level of the Masking
parameter, above which the detector will fail to work correctly. The software detects this and will
automatically (upon exiting the Menu) correct the Masking setting value if this occurs.
RUTUS
Alter71
ver. 2.0 13