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false signals. Gain setting is a personal pref erence . However , I t is impor tant to set the gain set-
ting to the highest level possible wher e no major popping sounds are heard to a void missing
smaller and deeper targets. F or example; if the noise level is suitable for sear ching and is the
same at gain levels 40 and 70, then 70 should be pref er red. U sing the factor y default levels
will be a good starting point until you get familiar and experienced with the device.
Gain in Discrimination Modes:
Since the threshold setting is not a vailable in the discrimination modes , you can increase
the depth of the device or ensure no ise -free opera tion on diff erent g rounds only by using
the gain setting .
In order t o adjust the gain in the discrimination modes, first gr ound balance while the gain
is at its default setting . After g round balance is complet ed, hold the search c oil stationary
or swing o ver the ground a t search heig ht. Reduce the gain if the device r eceives noise . If
not (ensure that the Di sc. is also at its defa ult settings when checking this), increase the
gain gradually until ther e is no pop ping sound. If th e device starts to r eceive noise during
searching , reduce the gain g radually .
NO TE: IMP ACT is a high gain device and some of the search modes will run relatively noisy
(Deep, DI4, VLX2) compared t o other modes so as to provide the best depth performance.
Howev er , due to the design characteristics of these modes , the noise will be hear d more if
the coil is in fr ee air than sweeping the coil on the gr ound. Please keep this factor in mind
while adjusting the gain.
Gain in Static Modes:
The factor y default for the gain setting is optimized. In situations where you would like to
adjust the gain setting (sudden changes in weather conditions, differ ent ground structures
and environmenta l noise), first re- ground balance . If there are significant positive or negativ e
threshold drifts after ground balancing , increase the iSA T setting in the Exper t S ettings. If the
drifts still continue frequently , drop the gain to 39, decrease the iSA T and re- ground balance .
In situations where the environmental and ground c onditions allow , you can obtain mor e
depth by incr easing the gain and lo wering the iSA T .
Threshold (Thresh.)
In the General Search Modes ( GEN and GEN (D)), search is performed with a continuous
humming sound in the backg round, also referred to as the thr eshold sound. The loudness
of this hum dir ectly impac ts the detection depth of smaller and deeper targets and it is
adjusted by the threshold ( Thresh.) setting . If the threshold is set too high, a w eak target
signal may not be heard. On the contrary , if the threshold is too low , you give up the depth
advantage this setting offers. In other w ords, weak signals of smaller or deeper targets may
be missed. It is r ecommended for a verage users to leave this setting at its default value
and for e xperienced users to adjust to the highest lev el where they can still hear the w eak
target signals .
Threshold level is directly relat ed to the Gain and iSA T settings. Please be sur e to r ead the
related sections of the manual carefully .
GAIN
Gain is the depth setting of the device. It is also used to eliminate the ambient electromag-
netic signals from the surrounding envir onment and noise signals transmitted from ground .
NO TE: T o obtain maximum depth per formance, t o eliminate the noise caused by electro-
magnetic interference , tr y shifting the frequenc y first (F . Shift). I f this is not sufficient, change
the operating frequency of the device (5kHz/14kH z/20kHz) before low ering the gain.
Gain setting range is 01-99 and pre- defined for e ach mode. All modes start at default
settings. They can be manually m odified when necessary . Gain adjustment applies t o the
selected mode; the modified setting does not affect the gain setting of the other modes .
NO TE: If the ground is highly mineralized causing the device to overload, decrease the gain
until the ''Overload'' message disappears from the screen.
Gain in General Search Modes (GEN and GEN (D))
In the GEN modes, gain setting causes an increase or decrease in the popping sounds and
D iscrimina tion (D isc .)
Disc . is the abilit y of the devic e t o ig nor e all metals belo w a c er tain T ar get ID . I n the Disc .
pr oc ess , the filt er ed ID r ange is sho wn with lines on the ID scale and ev er y 2 c onsecutiv e
IDs ar e r epr esen t ed with 1 line . F or e xample , if y ou set the Disc . t o 30, 15 lines will be sho wn
bet w een the 0-30 ID r ange on the scale and the devic e will not pr oduc e an audio r esponse
f or an y metals with IDs bet w een 0-30.
D i s c . se t t i n g i s d i sa b le d f o r G E N ( D ) an d S T A (D ) m o d e s on ly . F o r all o t h e r m o de s , t h e f ac t or y
d e f au lt v a lu e w i ll b e d is p la y ed o n s c r e en a t s t a r t u p .
I n o r d e r t o c h an g e t h e D i s c . v al u e , s e l e c t t h e D i s c . o p t i o n f r o m t h e m e n u a n d d e c r e a s e o r
i n c r e as e t h e v al u e u s i n g t h e p l u s ( + ) o r m i n u s ( - ) b u t t on s . P l e a s e r e m e m b e r t h a t c e r t a i n
t ar g e t s , o t h e r t h a n t h e o n e s y o u w a n t t o i g n o r e , m a y a l s o b e m i s s e d o r t h e i r s i g n a ls m a y
b e c o m e w e a k e r w h e n u s i n g t h e D i s c . s e t t i n g .
I n t h e ca se of r e c e i v i ng m u lt ip le I D s f or t h e s a me ta r g et - l et 's s a y 3 5 a n d 5 5 - d ue t o th e o r i e n -
t a t i o n of t h e t ar g e t or t h e c o m p os i t i on o f t he m et a l it se lf , i f y o u s et t he Di sc . t o 40 , b e c au s e 3 5
w il l f al l i n t he fi lt e r e d r an ge , t h e si g na l s t r e n g t h a s w el l a s t h e d ep t h m a y d i m i n i s h .
NO TE: D isc . setting w orks in v ersely pr opor tional t o depth up t o le v el 15 in DI2, DI3, DI4,
DI99 and C OG modes and u p t o 4 9 in GEN, GEN (D ), ST A, ST A (D ), DEEP , VLX1 and VLX2
modes . I n other w or ds , as the D isc . is incr eased up t o the abo v e men tioned le v els , stabil -
it y will incr ease but depth will be r educ ed and vic e v ersa. A bo v e these le v els though,
both depth and noise will incr ease .
I r on V olume (F e V ol .)
I t adjusts or tur ns off the v olume of the lo w ir on t one . I t can be adjust ed bet w een F0-F5 or
n1-n5.
F0-F5: F 5 i s t h e m a x i m u m l e v e l . A s y o u l o w e r i t , t h e a u d i o r e s p o n s e v o l u m e t h e d e v i c e
p r o d u c e s f o r f e r r o u s m e t a l s w i ll d e c r e a s e . A t F 0 l e v e l , t h e i r o n a u d i o w i l l b e s i l e n c e d . I n
o t h e r w o r d s , t h e d e v i c e wi ll d e t e c t f e r r o u s t a r g e t s , t h e T ar g e t I D wi l l b e d i s p l a y e d on t h e
s c r e e n b u t t h e d e v i c e w i l l n o t p r o d u c e an y a u d i o r e s p o n s e .
n1-n5: T h i s w i ll e n a b l e y o u t o g e t a l o w i r on t o n e f o r y o u r n ot c h e d ou t t a r g e t I D s i n s t e a d
o f s i le n c i n g t h e m . n 5 i s t h e m a x i m u m l e v e l a n d t h e i r o n v o lu m e wi l l b e r e d u c e d a s y o u g o
d o wn b u t i t c an n o t b e s i l e n c e d c o m p l e t e l y .
F e V ol . ad j u s t m en t a p p l i es t o t h e s e le c t e d s e ar ch m od e o n l y . T h e c h an g e d o e s n ot af f e c t t h e
o t h e r m o d e s .
T r ack ing
W hen tr ack ing is ac tiv e (01 position), the devic e c on tinuously tr acks the chang ing g r ound
struc tur es and aut oma tically r ec onfigur es the g r ound balanc e setting . T he in visible changes
in g r ound aff ec t the det ec tion depth as w ell as the discr imina tion abilit y of the devic e so
it is possible t o oper a t e the devic e a t higher per f or manc e using this f ea tur e under suitable
g r ound c onditions . P lease r ef er t o page 9 f or mor e inf orma tion on T r ack ing .
W hen tr ack ing is ac tiv a t ed , '' T r ack'' will be displa y ed in the message sec tion a t the bott om
of the scr een.
NO TE: T r ack ing is r ec ommended t o be used in the GEN and GEN (D ) modes only .
Brigh tness (Brigh t .)
I t enables y ou t o adjust displa y back ligh t lev el ac c or ding t o y our personal pr ef er enc e . I t
r anges bet w een 0-5 and C1- C5. A t 0 lev el , the back ligh t is off . W hen set bet w een 1-5, it ligh ts
up only f or a shor t per iod of time when a tar get is det ec t ed or while na viga ting the menu
and then it goes off . A t C1- C5 lev els , it will be c on tinuously lit . T he c on tinuous oper a tion of
the back ligh t will aff ec t po w er c onsumption, which is not r ec ommended .
T h e b ac k li gh t s e t t in g i s r e st o r e d t o t h e f i n al s a v e d se t t i n g wh e n t h e de v i c e is t u r n e d of f a n d
o n a g a i n . T h i s s e t t i ng i s c o m m o n i n al l m o de s ; c ha n g e m ad e in a n y m od e a ls o a p p l i e s t o t h e
o t h e r m o d e s .
V ibr a tion ( V ibr a t e)
T his f ea tur e pr o vides f eedback t o the user b y pr oducing a vibr a tion eff ec t when a tar get is
det ec t ed . I t can be used independen tly or t ogether with the audio r esponse . W hen audio
r esponse is disabled , all f eedbacks ar e pr o vided t o the user as vibr a tion only dur ing tar get
det ec tion.
V i b r a t i o n s e t t i n g i s a d j u st e d w i t h i n t h e r an g e of 0 0 - 0 5 . W h e n i t i s s wi t ch e d t o 0 , v i b r a ti o n f e a -
t u r e i s c o m p le t e ly d i s ab le d . I f t h e vi b r a t i on i s a t 0 1 l e v e l , t h e d e v i c e p r o v i de s l on g v i br a t i o n
s i g na l s a n d a t 0 5 it p r o v i d e s s ho r t v i b r a ti o n s i g n als . T h e ma g n i t u d e of t he v i b r a t io n ef f e c t c an
v a r y ac c o r d i ng t o t h e d ep t h o f th e ta r g e t a n d t h e s w in g i n g s p e ed . T h i s s e t t i n g i s c o m m o n i n
a ll se a r ch m od e s ( e x c e p t f o r S T A an d S T A (D ) ) ; c han g e m ad e i n a n y m o d e al s o a p pl i e s t o t h e
o t h e r m od e s . V ib r a t i on wi ll n ot w o r k i n S T A a n d S T A (D ) m o d e s e x c e p t wh e n t h e d ev i c e g o es
i n t o o v e r l oad .
V ibr a tion ma y not be f elt in the G ener al S ear ch modes ( GEN and GEN (D )) with w eak sig nals;
it will be f elt as the sig nal gets str onger . I n other w or ds , vibr a tion does not star t a t the depth
wher e the audio t ones ar e hear d but a t a lesser depth. T her ef or e , if y ou ar e det ec ting with
vibr a tion only and audio t ones ar e off , y ou can miss w eaker and deeper sig nals .
V ibr a tion speed is c onstan t in the p inpoin t mode and cannot be adjust ed . V ibr a t ion i s off
a t 0 position . 01 -05 v alues pr o vid e th e sa me l ev el of v ibr a tion in the pinp oin t mode . W hen
vibr a tion is used in the pinpoin t mode , vib r a tion sp eed incr e ases as th e tar get i s appr oac hed
and it r eaches the m aximum lev el o v er the c e n t er of the tar get .
T h e v i b r a t i o n s e t t in g is r e s t o r e d t o t h e f i n a l s a v e d s e t ti n g w h e n t h e d e v i c e i s t u r n e d o f f a n d
o n a g a i n . T h i s s e t t i ng i s c o m m o n i n al l m o de s ; c ha n g e m ad e in a n y m od e a ls o a p p l i e s t o t h e
o t h e r m o d e s .
L ed F lashligh t (Ligh t)
I t is the headligh t used f or ligh ting the ar ea y ou ar e scanning while det ec ting a t nigh t or in
dar k loca tions . LED flashligh t does not oper a t e when the devic e is off . I t is r ec ommended t o
tur n it on only when nec essar y sinc e its oper a tion c onsumes e x tr a ba tt er y po w er .
F r equenc y S hif t (F . S hif t)
I t is u s e d t o e li m i n a t e t h e el e c t r om a g n e ti c i n t e r f e r en c e t ha t t h e d e v i c e r e c e iv e s f r o m a n ot h e r
d e t ec t or wh i ch o p e r a t e s i n t h e s a m e f r e q u e n c y r an g e n e ar b y o r f r o m t h e s u r r o u n d i n g s . I f
t o o m u c h n oi s e i s r e c e i v e d w h e n t he sea r c h c o i l i s li f t e d i n t h e a ir , t h is m a y b e c au s e d b y t h e
l oc al e l e c t r om a g n et i c s i g n al s o r e x c e s s i v e ga i n s e t ti n g s .
T o elimina t e the noise caused b y elec tr omag netic in t er f er enc e , tr y shif ting the fr equenc y
first (F . Shif t) bef or e lo w er ing the gain t o obtain maximum depth per f or manc e . F r equenc y
shif t c onsists of 5 st eps . D efault setting is 03 which is the c en tr al fr equenc y .
IMPOR T ANT! F r e q ue n c y s h i f t m a y i mp a i r p e r f or m a n c e . T h er e f or e , i t i s s u gg e s t e d t h a t y ou do
n o t s h i f t th e fr e q u e n c y u n le s s i t i s n ec e s s ar y . I n c a s e s w h e r e t h e i n t e r f e r e n c e ca n n o t b e e lim i -
n a t ed wi t h t h e f r e q u e n c y s h i f t , t h e o pe r a t i ng f r e q u e n c y of t h e d e vi c e ( ( 5 k H z/ 1 4 kH z/ 2 0 kH z)
i n t h e Ex p e r t S e t t i n g m a y a ls o b e c ha n g e d .
F ac t or y Default /S a v e (FD/S a v e)
W i t h t h e F D / S a v e f e a t u r e o f t h e IMP A C T , y o u c a n s a v e y ou r s e t t i n g s o r r e s t o r e f a c t o r y
d e f a u l t s . S a v e f u n c t i on s a v e s a ll s e t t i n g s e x c e p t f o r t h e g r o u n d b a l an c e , t r ac k i n g a n d li g h t .
T h e d e v i c e s t a r t s i n t h e l a s t m o d e w h e r e t h e s a v e f u n c t i o n w a s p e r f o r m e d .
T o sa v e y our settings , selec t FD/S a v e on scr een. T w o dashes (--) will be displa y ed on scr een.
P ush the r igh t butt on. W hen ''SA '' is displa y ed , pr ess the SELEC T butt on onc e . Y ou will see
lines r ota ting in the GB windo w on the r igh t side . W hen the sa ving is c omplet ed , the lines
will st op r ota ting and the SA t e x t will disappear .
T o go back t o fac t or y defaults , selec t FD/S a v e on scr een. T w o dashes (--) will be displa y ed
on scr een. P ush the lef t butt on. W hen ''F d'' is displa y ed , pr ess the SELEC T butt on onc e . Y ou
will see lines r ota ting in the GB windo w on the r igh t side . W hen the pr oc ess is c omplet ed ,
the lines will st op r ota ting and the F d t e x t will disappear .
BASIC SET TINGS