30White's Electronics, Inc.1011 Pleasant Valley RoadSweet Home, OR 97386 USADistribution: 1-800-547-6911Factory: 1-541-367-6121FAX: 1-541-367

8Chapter 4 GMT ControlsGain Control/Power OffWith the GAIN control, you increase the signalstrength coming from the ground. You might expectincreased

9Gain Adjustment(cont'd)REDUCE GAIN" message is flashed, you mustheed it and reduce the GAIN rather than raise it.3. The object of increasin

10Chapter 4 GMT ControlsAUDIO SIGNAL BOOSTBATTERY TESTTOGGLEAudio Signal Boost ToggleThe AUDIO SIGNAL BOOST toggle switch booststhe sound (makes it lo

11Chapter 4 GMT ControlsVARIABLE SELFADJUSTING SPEEDCONTROL (VSAT)Variable SAT Speed ControlThe Variable SAT (Self Adjusting Threshold)Speed control k

12Chapter 4 GMT ControlsIron I.D. Trigger AdjustmentIRON I.D. TRIGGERSWITCH 1. ( Trigger Center - Iron I.D."GRUNT" OFF )With the trigger in

13Chapter 4 GMT ControlsThreshold ControlThe THRESHOLD control sets the loudness of thebackground "hum". This background "hum" mus

14GROUND BALANCETOGGLE SWITCH-The GMT has an exclusive new digital system thatrecords the AMOUNT of mineral in the ground. Areference number in the up

15Chapter 4 GMT ControlsGROUND BALANCETOUCH PAD BUTTONS"Manual" Ground BalanceFor ultimate control in detecting small nuggets inareas where

16Chapter 5 GMT SearchingSearchingPinpoint TechniqueDue to the wide scan nature of elliptical searchcoilsit can be difficult to locate small targets u

17Chapter 5 GMT SearchingHeadphonesThe headphone jack on the GMT is located on thecontrol box near the plug for the search coil. Thereis a dust cover

29IntroductionAll White's ground canceling detectors are capable of finding gold nuggets in the ground.However, none will perform as efficiently

18Chapter 4 GMT SearchingPutting it all together:Once you have achieved the initial ground balance,you are ready to start searching. Move the coil ju

19the detector is ground balanced, the (-) & (+)controls are used only occasionally to update theground balance setting. Old workings andoutcropp

20Chapter 5 GMT SearchingField Use & Tuning Tipsalmost impossible to eliminate all of them with onesetting. Some will be identified by the I.D. s

21Chapter 5 GMT SearchingPinpointing or "X" ing the target:In most cases, pinpointing is easily performed bymerely "X-ing" or cris

22% Iron Probability Blocking:In operating the GMT, we have noticed that the %of Iron Probability Block Graph is very dependable.We noted that when t

23coil till the message and "squawk" stop, you candecide how large the target is and whether you wishto dig it up to investigate. If you get

24Proper careIII. StorageA. When the instrument is not in use, make sureit is turned OFF.B. If you plan on storing your detector for long,remove the b

25ServiceBefore shipping detectors for service:A. Contact your Dealer. There may be a quick,simple fix or explanation that will preventhaving to send

26WarrantyChapter 6 GMT InformationIf within two years (24 months) from the originaldate of purchase, your White's detector fails due todefects i

27Chapter 6 GMT InformationWarranty TransferIf for any reason you should sell your GMT prior to the date the warranty expires, theremaining warranty i

1GMT Table of ContentsChapter 1 Assembly...2Assembly Instructions ...

28A Video cassette detailing the proper use of theGoldmaster GMT will be available soon. This videoexplains how to use the GMT in the field, as well a

2AssemblyChapter 1 GMT AssemblyELBOWCUPSTRAPELBOW CUPFOAM PADS INSIDE ELBOW CUPCONTROL BOX“S” RODLOOP CABLECAMLOCKSWASHERSBETWEENEACH LOOPEAR & CL

3Chapter 1 GMT Assembly5. Grip the instrument by the handle, with yourarm in the elbow cup with strap secure, and sweepthe coil over the floor. If

4BatteriesChapter 2 GMT BatteriesUsing theStandard Battery Holder1. Slide open the battery holder lid (decal side ofbattery holder) by applying gentl

5Chapter 2 GMT BatteriesBattery CheckWhen the Battery Test toggle is pressed downward,battery condition is indicated on a bargraph on theLCD display,

6GMT Quick StartChapter 3 GMT Quick StartGROUND BALACE ToggleTwo position switch for settingeither Fast AutoTrack orManual GROUND BALANCEGAIN ControlF

7Chapter 3 GMT Quick StartQuick StartInstructionsWith the GMT properly assembled and the batter-ies installed, follow the instructions below to startf