23
T ARGET DEPTH
The device pro vides an estimated target depth acc ording to the signal str ength both
during detection and in the pinpoint mode.
Depth Indicator: It shows the target's pro ximit y to the surface in 5 levels during detection.
Because each mode of the Gold Kruzer has different depth, the depth indicat or will display
a differen t depth level for the same tar get in differen t modes.
In the pinpoint mode, estimated tar get depth is shown on the display in cms (or inches -
please see below for details) while getting closer t o the target.
Depth detection is adjusted presuming that the target is 2.5cm (1'') in diameter . Ac tual
depth varies according t o the size of the target. F or instance, the detector will indicate more
depth for a target smaller than 2.5cm (1'') and less depth f or a larger target. In reality ,
pinpoint procedur e is not intended for depth det ermination but exact location
determination. Therefore , it is recommended that the depth indica tor on the display is used
for determining the pr oximity to the target.
IMPORT ANT! If you want the target depth t o be displayed in inches instead of cms please
do the following: While the device is off , press and hold the SETTINGS/OPTIONS and
BOOST buttons simultaneously and turn the device on. ''In'' will be displayed . T o switch
back to cms, y ou need to turn the device off and then repeat the abo ve procedur e. While
the device is initializing, ''SI'' will be displa yed.
LARGE OR NEAR-SURF A CE T ARGETS
T argets which are near the surface may give multiple different sig nals to the device. If you
suspect a target near the sur face , lift the search coil and swing it more slowly until a single
signal is receiv ed. Also , if there is a large target near the surface it may cause an overload in
the search coil and the device starts to generate a c ontinuous sound which resembles a
siren. “Overload” message is shown on the display simultaneously . In such a case, lift the
search coil up until the message disappears .
F ALSE SIGNALS AND REASONS
Sometimes, the device may pr oduce signals which are similar t o a target signal although no
metal target is present . Ther e are various reasons f or the false signals receiv ed by the
device. The most common ones are g round mineralization or r ocks with high mineral
content, surr ounding electromagnetic signals, opera tion of another nearby detector ,
rusted or corroded ir on or foil in the soil, gain or thr eshold values set too high.
Surrounding electromagnetic signals can be eliminat ed by reducing the gain. If another
detector is operating nearby , you may attempt to shift the frequency or perform your search
at a distance where no int er f erence occurs . F or ground mineraliza tion or hot rocks with high
mineral conten t, and gain and threshold set too high, please read the r elated sec tions .
MA GNETIC MINERALIZA TION INDICA T OR
The Magnetic Mineralization Indicator consists of 5 levels . The indicator bars do not rise at
low mineral levels during sear ch and at start up. In areas where the magnetic mineral lev el
is high, the indicator bars will rise accor ding to the intensity . This measurement can be
summarized as the level of magnetic pr opert y and intensity of the gr ound.
This measurement is important from two aspects. F irst, on grounds with high magnetic
mineralization, search depth is lo w and users should be aware of this fact. Second,
magnetic mineralization is a pr oper ty which is particularly seen with mineralized rocks and
this measurement play s an impor tant r ole for the device t o eliminate the false signals
produced by these r ocks.
ROCKS AND SEARCHING IN ROCKY TERRAINS (GENERAL MODE AND OTHERS)
Challenging ground c onditions arise especially when conductivity and magnetic
properties of the ground are too int ense. Operation of the devic e over such gr ound is made
possible by selecting the best operating mode as well as using proper g round balance ,
gain, iSA T , iMASK and threshold settings.
Stones and rocks or ca vities inside the ground are as important as the ground itself in
regards t o the search and target detection quality .
Soil and rocks have two diff erent properties just like the targets you are searching f or . One
of them is the intensity and the other one is the conductivity - magnetic permeability ratio
and these two properties are independent from each other . In this manual, the
conductivity - magnetic permeability ratio will be referred to as ID in short. High magnetic
permeability , low conductivity results in low ID . S oil or r ocks can be highly permeable and
have lo w or high IDs as well. If the conductivity increases relative t o magnetic permeability
then the ID will also increase.
Hot rocks are classified as negativ e or positive based on their ID being low or high in
comparison to the ID of the soil they are in. One or both of the types may be pr esent in a
field. The negative and positiv e effects mentioned here will only be valid if g round
balancing is properly done on the existing gr ound. Other wise, soil itself will not act
differen tly from hot rocks in terms of ID . In '' TRACKING'' ho wever , conditions will diff er .
Theref ore, the eff ec ts of rocks in tracking will be discussed separately . Here we are ref erring
to a proper gr ound balance without tracking.
P ositive hot rocks act just like metal and produce a metal sound . In the General Search
Mode (GEN) they produce a “zip zip ” sound when the search c oil is moved ov er them. If the
signal is strong enough, the device ma y produce an ID f or these hot rocks and the Mineral
Bar will rise. Negative hot r ocks in the G eneral Search mode , produce a long “ boing ” sound
when the search coil is mov ed over them. The device does not giv e an ID for these hot rocks
even if the signal is str ong but the Mineral Bar will rise.
P ositive hot rocks pr ovide a typical metal sound in the other modes. Negative hot r ocks do
not provide a sound in these modes (ex cept for rare cases of false signals). The Mineral Bar
will rise in either case.
At higher settings of iSA T , there will be no change in the sounds of positive or negative hot
r ocks . A s the iSA T v alue is decr eased , the sound of positiv e hot r ocks will r emain the same
but the nega tiv e hot r ocks ma y g iv e a thinner beep sound inst ead of the boing sound .
T her ef or e , y ou can make a decision b y list ening t o the audio r esponses pr oduc ed b y the
devic e in the field . I n the GEN mode , when the devic e pr oduc es an audio t one , if the miner al
bar r ises a t the same time , y ou can decide whether the tar get is a positiv e or a nega tiv e hot
r ock b y list ening t o the sound . I n the other modes , if y ou ha v e not changed the default
DISC. setting of the de vic e , the devic e will not pr oduc e an audio t one f or positiv e hot r ocks
and if y ou ha v e g r ound balanc ed , it will not emit an audio t one f or nega tiv e hot r ocks
an y w a y . I f y ou ha v e changed the DISC. setting of the devic e in these modes , when y ou
r ec eiv e a str ong sig nal and a stable ID , y ou can distinguish if the det ec t ed tar get is a positiv e
hot r ock or metal b y check ing the ID . Ho w ev er , r emember tha t w eak sig nals ma y pr oduc e
diff er en t IDs and metals under r ocks ma y pr oduc e diff er en t metal sig nals . T her ef or e , the
most appr opr ia t e ac tion is t o dig up when a metal sig nal is r ec eiv ed .
B ecause y ou can enc oun t er such a situa tion in gold pr ospec ting ar eas wher e nuggets ar e
being sear ched f or , it is impor tan t f or y ou t o get familiar with the hot r ocks and their IDs in
y our sear ch field and pr e -t est the devic e with some nuggets .
I f y ou ar e using one of the modes other than the GEN mode and y ou k no w the ID of the
sur r ounding hot r ocks , y ou can use the DISC. setting t o elimina t e the r ocks . Ho w ev er , this
ma y not be sufficien t t o a v oid all r ock sig nals . T he devic e ma y still r ec eiv e sig nals fr om r ocks
because soil and r ocks t ogether will f or m a c ombined eff ec t and gener a t e a diff er en t ID
than those of r ocks .
TR A CKING AND EFFEC T S OF ROCKS
W hen the tr ack ing is ac tiv e , the devic e ma y g iv e an audio r esponse and ID when it passes
o v er a hot r ock because the eff ec t of the r ock will be diff er en t than the g r ound's . A t the sime
time , the miner al bar will r ise . I f y ou swing the sear ch c oil o v er the r ock , tr ack ing will
aut oma tically adjust the setting and the audio r esponse/ID will either disappear or
diminish sig nifican tly . B ecause ther e is a sligh t dela y in tr ack ing , y ou ma y hear a str ong
sig nal a t the first one or t w o swings un til the setting is adjust ed . T hen the sound will get
w eaker and disappear . T his will not happen with metal tar gets because metals will pr ev en t
the devic e fr om g r ound balancing . T her ef or e , in tr ack ing , if y ou ar e getting a c onstan t
sig nal o v er a tar get af t er r epea t ed swings , ther e is a high possibilit y tha t the tar get is a
metal . M o ving fr om o v er a r ock back t o soil , the devic e ma y g iv e sig nals t o the g r ound f or a
f ew swings un til the g r ound balanc e setting is upda t ed again. T his is nor mal and should not
mislead y ou .
T r ack ing is not r ec ommended t o elimina t e r ocks under nor mal c onditions . I t is
r ec ommended f or use in ar eas with chang ing soil t ypes .
ME T ALS UNDER ROCKS
G old K ruz er incr eases the possibilit y of det ec ting metal tar gets under miner aliz ed r ocks
thr ough the pr oper adjustmen t of y our settings . T he c ombined eff ec t cr ea t ed b y the r ock
and metal t ogether is lo w er than the eff ec t tha t the metal cr ea t es b y itself and the
displayed ID will be diff erent than the metal's expected ID . The displayed ID is formed by
the combination of rock and metal t ogether and gets closer to the ID of the rock if the size
of the metal is smaller in relation to the r ock. Keep in mind that metals under hot rocks will
never appear with their own metal ID . For instanc e, a gold piece under a brick may pr oduce
an iron tone and ID .
If you eliminate hot rocks with a c orrectly adjusted DISC. setting in the search modes other
than GEN, you can hear the signal of the target under the r ock if the target signal has a
slightly great er effect than the DISC. value. The important thing here is that if you detect a
target and dig out a rock, you should note the ID y ou got befor e digging and use it as the
DISC.value the next time.
F or instance; the hot rocks in y our search field tend to g ive IDs around 00-04. In this case,
you should set the DISC. to maximum 05. This way y ou can eliminate r ocks and receive the
signals of metals underneath. If you set the DISC.too high unnecessarily , you will lose
metals along with rocks.
IMPORT ANT! When searching in fields with hot rocks , using the E.U .D featur e (page 20) is
recommended to a void missing metals under hot rocks .