Mikron STINGER Operation instructions

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STINGER
User’sOperatingManual
MadeinBulgaria

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Inordertousethedeviceforamaximumlongtimeandwithout
problems,aswell
astobeabletouseallofitsoptions,pleasereadcarefullythewhole
instruction
manualandobservethedirections init.
Thestandardsetof STINGER comprises:
-searchingframeof1x1m.
-monitorunitwith builtinaccumulators;
-automaticrechargedevicefor220 V;
-detailedinstructionmanualfor operation.
If any oftheseitemsaremiss ing,immediatelyinformus,orourautor ized
dealer
whereyoupurchasedyourdetector.
_"STINGER"isanimpulsemetaldetectorwith anLCD–Display,digital
andgraphicalpresentationof thelevelofsignalandparametersof
discriminationandworkingmodes,aswell asofthestateoftemperatureof
thestoragebattery;
_Full automaticbalancetogroundconditionswith memorizingandadapting
tothelevelandparametersofthebackgroundofsoilandtheirelimination
bythegeneralsignal.
_Reportingoftheinfluenceofearth magneticfieldanditsisolationfrom
thegeneralsignal
_Reportingofsidedisturbancesandtheirfull eliminationduringwork
_Possibilityfor workinpremisesandinproximitytoelectricnetworks–full
suppressionof 50 _zdisturbances.
_12 regimesofwork-6dynamicand6static-forcorrectlocalizationof
theobject.
_Modeofworkfor all metals.
_Three modesofdiscrimination-1for normalsoil,1for soil with high
mineralization,and1forhighmineralizedsoilswith changingbackground

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withinwideranges+outerdisturbances.
_Choiceof2typesofsoundindication-VCO(multi–frequency one)or
two-tonalindication,lowtoneformagneticandhightonefor non–
magnetic(non-ferrousmetals).
_Built–in storagebattery,providing10-20 hoursofconstant work
dependingonchosenpower
_Automaticchargeof thebattery–measuringofchargedcapacity and
trackingoftemperatureduringcharging;
_Trackingof thecapacityofthestoragebatteryandautomaticsignaland
turningoffatachievingofacriticalminimum.
_Possibilityforsettingofover30workingandserviceparameters
providingcomfortableandeffectiveworkundervariousconditionsofwork.
_Possibilityfor quickandeasyaccesstoallsettingsinthemenu;
_All thesepossibil itiesallow„STINGER“toworkperfectlyunderany
groundconditions,includingathighmineralizedandpollutedsites!
„STINGER“hasthefollowingpartsfor control:
Switcher"ON–OFF"for turningonandturningoff
Buttons"SELECT","_and_"servefor workwith themenu andthesettings,
selectingofamodeof discriminationandmotion.
Button"CLEARGND"–servesforautomaticsettingofthedevicetoground
conditionsofterrainwhereitworks.
Button"MODE"—usedatthemodesofdiscriminationandservesfor
momentaryswitchinginto„ALL METALS"modeforpreciselocalizationof
objectwithoutlosingofthevalueof memorizedbalancetothegroundin the
discriminationmodes,aswell asforbalancingtotheconditionsofthesoil
throughpressingandholdingofthe"MODE"andmomentarypressingof
"CLEARGND"

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-Button"DISCR"–servesforturningonandoffofthediscrimination
modes.
1.Settingandwayofwork:
Searchingframeisassembledandisplacedonthegroundpayingattention
totherangeandtheredon'thavetobeany metalobjects.
Thecableissub-connectedtothedevice.Thedeviceisturnedon by"ON–
OFF"andyousee „Start Detector“onthedisplay.Nullificationstartsand
balancingtogroundconditionsduringwhichtimethedisplayshows"CLEAR"
andyoucanhearasinglesound. Thislastsfor 3–4sec.,thenitisfollowed
byadoubleshortsoundandthedeviceisturnedoningeneralmodeof"ALL
METALS".Ifyou wish toworkinamodeofdiscrimination"DISCR",theyou
havetopushthebutton"DISCR",atwhichthedeviceisswitchedinto
discriminationmodeandthedisplayshows"DISCR.1".Itsnextpushing
switchesagainthedeviceinto"ALL METALS"mode.
Workingwith thedevicein"ALL METALS"mode
Inthismodethedisplayshows"ALLMETALS".Constantlyshownaerthe
levelofsignalingraphicalanddigitallook,thecapacityofthestorage
battery,chosenpower,thelevelofco–workingofthesoundandthe
workingmode,as follows:
-1strowtotheright –capacityofthebatteryinpercent: 0%-100%
-2ndrowtotheright –chosenprofileofwork -"Prof1"or " Prof2".Atboth
profiles

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thedeviceworkswith different searchingcoilsor frames-" Prof1"–
programfor small roundcoils–28cm.36cm.45cm.or"Prof2"–program
for searchingframes–1x1mor2x2m.
-3rdrowtotheright –thresholdofsound,levelafterpassingofwhicha
soundappears
-4th rowtotheright –thelevelofsignalfromtheregisteredmetalin
figures–from 0
–400.Ifthereissignalof metalwithintherangeofthecoil,disturbancesor
influenceby soil,uponpressingof "CLEAR GND"indicationwillbecome"0".
Afterremovalofthesourceofthesignalfromthecoil range,indicationwill
becomeofnegativevalue.Inordertobenullified, youhavetopushagain
"CLEARGND".Uponpushingandholdingof"CLEARGND"formorethan4
secthedevicesisrestarted.
Thedevicecan workin12 modesofspeedofsearching–6static(forprecise
localizationofobject)-"FIX0"-"FIX5",and6dynamic(forsearchingwith
motion)–"MOV0"–"MOV5".
"FIX“arestaticmodesofsearching, i.e.,thedeviceconstantly reactstoa
metallocatedwithintherangeofthecoil.Theyaresuitableforlocalizationof
theexactplaceofanalreadyfixedmetal,andonemayconstantlyworkin
thismode.
Fastestoneisthe"FIX0"mode,andslowestoneis"FIX5".
"MOV"aredynamicmodesofwork withavariousspeedofsearching. The
differenceamongthesemodesisinthetimefor automaticnullificationof
appearedsignals,i.e.thedeviceisconstantlysetadditionally,but with a
variousspeedatindividualmodes.Fastestoneisthe"MOV0"mode,and
"MOV5"isslowestamongthedynamicmodes.Atthesemodesthedevice
reactstometalobjectswithintherangeofthecoil only atmotion ofthecoil
abovethem.
Onthe2ndand4th rowofthedisplaytotheleftgraphicalindicatorsare

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depictedofthelevelformorecomfortabletrackingofthechangesinthe
signal.
Indicatorscanshowpositiveor negativelevelsrespectively increasingtothe
right or totheleftfromthedividingzero point ofeachofthem.
Theindicatoronthe2ndrowisindicator ofthemomentarysignal.Ata"FIX"
modeitrepeatstheindicator ofthegeneralsignal.In"MOV"modeitonly
showsthechangein thesignal.
Theindicator onthe4th rowisanindicatorofthegeneralsignal.Itshows
thesummarysignalof thecoil without processing.
Normally,bothindicatorsshowpositivevaluesatapresenceofasignal,
afteritsdisappearancetheyshow"0"orhesitate (-1...0...+1).
Shouldwithinthecoil rangetherefallsinametalobject,itprovokesasignal
whichisdepictedonthe2ndleveloftheindicatorandofthedigital
indicationofthesignal.Shouldthissignalislouderthan thechosenthreshold
ofthesound"TRSa",asoundisheardwith afrequencywhichdependson
thelevelofthesignal.Themorelouderthesignal,themorehigherthe
soundfrequency.
Shouldthegeneralsignalbecomeshigherthan"90",levelindicatorsshow
">>>>>>>>",andthedigitalindicationcontinuestotracktheincrease,
thesoundisalsochanged.Ifthelevelofoverfillisachieved, hesoundis
changedtoaveryloudsignaltone,and„OVERFLOW“appearsonthe4th
rowofthedisplay.
3.Settingofworkingparametersin"ALL METALS"mode:
settingofthethresholdofco–workingofthesound"TRSa"–thisisthe
levelofsignalafterpassingofwhichasoundisheard. Thedevicemaybeset
atsuchstrength ofsignaltoreactwithsound. Thisisdonewith changein

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theparameter"TRSa".For thispurposethearrowismovedthrough
"SELECT"tobeagainst„TRSa"andthroughthebuttons"_and_"desired
valuecan bechosen.Forendyoupress"SELECT"andthearrowgoesdown
againonthe4throwforchoiceof"FIX"or "MOV"modes.Thelowerthe
valueof„TRSa",thegreaterthesensitivity ofthedevice.For instance,ifata
balanceddevicetheconstantsignalfromsoilis"1"andwehavechosenfor
"TRSa"avalueof"1",thenasoundsignalisgoingtoappearwhenthe
generalsignalbecomesgreaterthan"1".Ifforexamplefor "TRSa"avalue
of"6"has beenchosen,thenthedeviceisgoingtoreactwith soundata
considerablystrongersignal–valuegreaterthan"6".Greatervaluesof
"TRSa"can
beselectedifthegeneralsignalfromthebackgroundofsoil changeswithin
widerlimits,inorderthedevicetobecalm,aimingasoundsignalnottone
producedwhichisnotduetodetectedmetal,but thegreaterthevalueof
“TRSa”,themoresensitivityofthedevicedecreases!
-changeofworkingpower-thedevicecanworkwith different coilsor
frames"Prof1"isprogramforsmall roundcoils, Prof2“isprogramfor
frames1x1m.Or2x2m.
Selectionoftheoneorof theotherprofileisdonethroughpressingof
"SELECT"untilthearrowisfixedonthe2ndrowtotheright before"Prof"
andthroughthe"_and_"buttonsthedesiredcoil ischosen" Prof1"or "
Prof 2".
Itisnecessarytohaveitinmindthatateveryswitchingof“Prof1”or
“Prof2”thedevicerestarts,inordertodefineall workingparametersin
accordancewith thecoilchosen.
Incaseofdisbalanceyoushouldpush“GNDCLEAR”andthesearchcoil
shouldatthesametimebeclosetotheground.
4.Settinguptheworkingparametersin“DISCR”mode

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“STINGER”has3discriminationmodes-“DISCR.1”,“DISCR.2”and
“DISCR.3”,thatarechosenbypushingthe“SELECT”button,untilthearrow
pointsthediscriminationindication-1stlineandthe“DISCR”modeshould
beon.
Whendiscriminationison,besidesthesignalstrength twomorevalueslight
up C1 and C2,whichwhenaferrous(magnetic)metalisregisteredhave
negativevalues,andincaseofanon-ferrous(non-magnetic)metal–have
positivevalues.
“C1”isthevalueforchromaticityofmetal,and“C2”-isavalueforits
magnetism.
Mostoftenwhenanon-ferrousmetalisdetected C1 hasaverybigvalue,
e.g. +8+15,whilethevalueof C2 isaroundzero.
Whenfoil,aluminium andironthatisnotrusty, C1 and C2 havenegative
values,andtheirvaluesarebigandpositive,whenthenon-ferrousmetalis
pure,without alloys–gold, bronze,copper,silver.Whenahighlyrustediron
isdetected, C2 hasahighnegativevalue,e.g. -15-20,and C1 isaround
zero.

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C1 and C2 canhavedifferent valuesifferrousandnon-ferrousmetalis
present withinthecoilrange.
Thevalues C1 and C2 appearonlywhenmetalisdetected,andwhenthe
signalismissing,“TRSc”and“TRSd”light upintheirplace,as:
“TRSc”isthethresholdofsoundchangefromlowtohightone.Itexpresses
thevalueof C1,beforewhichthesignalisalowtoneandafterit-ahigh
tone.Forexampleif“TRSc”is 5 ,signalswith levelslowerthan 5 will be
registredwith alowtone,andincaseofsignalsexceeding 5,ahightonewill
beheard.Usually“TRSc”shouldbe 1 sothatsignalswithpositive“C1”are
registredwith ahightone,ornonferrous.
“TRSd”isthethresholdofsoundharmonisationindiscriminationmode.It
determinestheminimumrateofsignal,afterwhichthecalculationofthe C1
and C2 valuesbegins.The“TRSd”settinglightsuponthe3dlineatthe
rightsideandisanalogicalto“TRSa”.Smallervaluesof“TRSd”willensure
thebeginningofthediscriminationincaseofweakersignals,butthatcould
leadtomoreunstableindicationsor fakesignals.“TRSd”canchange
between5-20.
Thebalanceindicator“I-I”regardingthesoilbackgroundlightsuponthe
1stlineattherightsideandshowsif thedeviceisbalancedwhenthesignal
ismissing. Whenthedeviceisbalancedandtherearenometalobjects
withinthereach ofthecoil,theindicatorshouldhavetwoequallevelstothe

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rightandtotheleftofthe“-”symbol.Ifthereisadifferencebetweenthe
twolevelsthedeviceshouldbebalancedagain,bypressingthe“CLEAR
GND”button.Thelevelofthetwocolumnsofthebalanceindicator shows
alsothepowerofthesignalfromthesoil.Thehigherthelevel,thestronger
thesignalandthustheoperatorcangetorientatedwhichdiscrimination
modetouse–whenthesignalisweak(lowindicatorlevel)itis
recommendedtoworkat“DISCR.1”,whetitisataveragelevel-
“DISCR.2”,andathighlevels(strongsignalfromthesoil)-“DISCR.3”
Whenthe“SELECT”buttonispushedatadiscriminationmodeand
movement ofthearrow(>)at1stline,thetypeofdiscriminationcanbe
chosen“DISCR.1”,“DISCR.2”or“DISCR.3”.
“DISCR.1”isanappropriatemodewhenthesoilbackgroundisdisparagingly
small anddoesnotsignificantlychangethesignal,receivedwhenametal
objectisdetected.
-Whenthesaltismoremineralised,ittransmitsasignalthatcanincrease
significantly,especiallywhentheframeisclosetothegroundsurface.The
highlymineralisedsoils,especiallyiftheyhavehighmoisturecontent,
additionallyincreasethetotalsignalanditcanhavehighvalues.Ifthereisa
non-ferrousmetalin thistypeofsoil,itwillinverttheoverallsignaltomore
positivevalues,thusthesensitivitywilldecreasebecauseofthesoil
background.
-Forcaseslikethatthe“DISCR.2”modeisappropriate,wheretheaverage
backgroundlevelsareassumedtobeequaltozeroandeachinstant increase
ofthesignaldetectedfromametalobjectwill besignalised.
Thesensitivityatthismodeisgreater,becausethesignalappearsbeforethe
soilbackgroundistotallycompensated. Forexampleifthesoilbackground
is“C1=-7”,incaseofincreasingto -6,-5 thedevicewillmakeasignal,
whileatanormaldiscrimination,thesignalshouldincreaseover0,inorder
for asoundsignaltoappear.
Somewhataflawofthismodeis,thatitcangiveasignalwhenevenwhena