Table of Contents
Advertisement
Quick Links
NOTE: Due to Acrobat PDF limitations the Introductory page is on page 29
Chapter 1 Assembly ............................................................................... 2
Assembly Instructions ......................................................................................................................... 3
Chapter 2 Batteries ................................................................................. 4
Standard Battery Holder ...................................................................................................................... 4
Rechargeable Battery(Opt.) ................................................................................................................. 5
Battery Check ...................................................................................................................................... 5
Chapter 3 GMT Quick Start .................................................................. 6
Instructions ....................................................................................................................................... 7
Chapter 4 Controls ................................................................................. 8
Gain Control/Power Off ...................................................................................................................... 8
Gain Adjustment .................................................................................................................................. 8
Gain Adjustment (cont'd) .................................................................................................................... 9
Audio Signal Boost Toggle ............................................................................................................... 10
Hot Rocks .......................................................................................................................................... 11
Variable SAT Speed Control .............................................................................................................. 11
VSAT Adjustment.............................................................................................................................. 11
Iron I.D. Trigger Adjustment ............................................................................................................. 12
Threshold Control ............................................................................................................................. 13
Threshold Adjustment ....................................................................................................................... 13
Fast AutoTrac .................................................................................................................................. 14
Manual Ground Balance .................................................................................................................... 15
Ground Balance Adjustment ............................................................................................................. 15
Chapter 5 Searching............................................................................. 16
Pinpoint Technique ............................................................................................................................ 16
Headphones ....................................................................................................................................... 17
Field Use & Tuning Tips ................................................................................................................... 18
Field Use & Tuning Tips (cont'd) ...................................................................................................... 20
Field Use & Tuning Tips (cont'd) ...................................................................................................... 22
Chapter 6 Information.......................................................................... 24
Proper Care ........................................................................................................................................ 24
Service ............................................................................................................................................... 25
Warranty ............................................................................................................................................ 26
Warranty Transfer .............................................................................................................................. 27
Video and Owner Information ........................................................................................................... 28
GMT Table of Contents
GMT Table of Contents
1
Advertisement
Table of Contents
Related Manuals for Whites GMT
Summary of Contents for Whites GMT
-
Page 1: Table Of Contents
Standard Battery Holder ........................4 Using the Standard Battery Holder ........................4 Rechargeable Battery(Opt.) ......................... 5 Battery Check ............................5 Chapter 3 GMT Quick Start ..............6 Quick Start Instructions ............................7 Chapter 4 Controls ................. 8 Gain Control/Power Off ........................8 Gain Adjustment .......................... -
Page 2: Chapter 1 Assembly
Chapter 1 GMT Assembly Assembly WASHERS BETWEEN EACH LOOP EAR & CLEVIS METER / DISPLAY CABLE RETAINERS 1/ Iron I.D. % Probability Bar Graph 2/ Type of Minerallization ( 0 to 99 ) CLEVIS 3/ Amount of Mineralization ( 0 to 99 ) -
Page 3: Assembly Instructions
Chapter 1 GMT Assembly Assembly Instructions 1. Remove all parts from shipping carton and 5. Grip the instrument by the handle, with your check the assembly page to make sure all parts are arm in the elbow cup with strap secure, and sweep present. -
Page 4: Chapter 2 Batteries
Chapter 2 GMT Batteries Batteries Using the Standard Battery Holder 1. Slide open the battery holder lid (decal side of battery holder) by applying gentle upward pressure on the tab of the door so that it unlocks. Slide the door away from the battery box exposing the cell positions. -
Page 5: Rechargeable Battery(Opt.)
Chapter 2 GMT Batteries Rechargeable Battery(Opt.) Battery Check A rechargeable battery system is not standard equipment with your GMT, however, high quality systems are available. White's rechargeable battery #802-5211, and charger #509-0022 are recommended and offer SORRY! LOW BATT quick charge and overnight charge options. -
Page 6: Chapter 3 Gmt Quick Start
Chapter 3 GMT Quick Start GMT Quick Start Iron I.D. Trigger Switch three position-Forward, Center, and Squeeze Audio Signal Boost Toggle Switch-three position-On, Off, and Battery Test GROUND BALACE Toggle Two position switch for setting either Fast AutoTrack or Manual GROUND BALANCE... -
Page 7: Quick Start Instructions
With the GMT properly assembled and the batter- If you attempt to demonstrate or test the ies installed, follow the instructions below to start GMT by waving targets in the air in front finding those nuggets! of the search coil, it is ESSENTIAL to... -
Page 8: Chapter 4 Controls
This is where the new GMT can help you out. When ground mineralization is too high for the current GAIN control setting, the display flashes "BAD GROUND-REDUCE GAIN"... -
Page 9: Gain Adjustment (Cont'd)
GAIN" alert keeps popping up on the display or if ground noises are still a problem reduce GAIN. IRON I.D. BARGRAPH 7. The IRON ID capability of the GMT also functions more accurately when the GAIN is set at a level which allows for smooth operation. Too much GAIN can cause bad ground to distort the proper identification of iron and non-iron targets. -
Page 10: Audio Signal Boost Toggle
Chapter 4 GMT Controls AUDIO SIGNAL BOOST BATTERY TEST TOGGLE Audio Signal Boost Toggle The AUDIO SIGNAL BOOST toggle switch boosts the sound (makes it louder) to help "hear" very deep or small nuggets. AUDIO SIGNAL BOOST only amplifies the sound AFTER processing thus it does not cause signal overload. -
Page 11: Hot Rocks
Chapter 4 GMT Controls Variable SAT Speed Control The Variable SAT (Self Adjusting Threshold) Speed control knob adjusts the speed that the GMT recovers its threshold "hum" when the search-coil passes over changes in mineralization. Changes in mineralization can cause a rise or fall in the "hum". -
Page 12: Iron I.d. Trigger Adjustment
Normal tracking STOPS and IRON I.D. adds each succes- Iron I.D. Tips & Facts sive pass to its memory bank. Unique to the GMT, 1. In extreme ground conditions where Iron we call this feature "TARGET ANALYSIS". Since I.D. -
Page 13: Threshold Control
Threshold Adjustment The GMT has an improved microprocessor driven THRESHOLD control that is adjusted with a single THRESHOLD CONTROL turn. It does not, therefore, require a 10 turn pot for “HUM”... -
Page 14: Ground Balance Fast Autotrac
As most electronic prospectors have always known, gold usually follows black sand. So with the new GMT you can avoid the problems that GROUND BALANCE varying TYPES of ground mineralization cause by... -
Page 15: "Manual" Ground Balance
Chapter 4 GMT Controls Ground Balance Adjustment When you turn the GMT on, The GROUND BAL- ANCE reference number in the upper left portion of the display shows a default value of 77(approximate level reading for a ferrite sample). After performing the "pumping"... -
Page 16: Chapter 5 Searching
Chapter 5 GMT Searching Searching Pinpoint Technique Due to the wide scan nature of elliptical searchcoils it can be difficult to locate small targets under the physical center of the loop. Use an "X" marks the spot technique as shown in the diagram to identify the portion of ground the nugget is in. -
Page 17: Headphones
Chapter 5 GMT Searching Headphones The headphone jack on the GMT is located on the control box near the plug for the search coil. There is a dust cover on the headphone jack that needs to be removed before the stereo plug from the head- phone is inserted. -
Page 18: Field Use & Tuning Tips
Rather than concentrating on all of the controls of can tune the GMT, the more gold you will find. the detector, think of the detector's systems as an If small red “hot rocks” (positive mineralization) - Page 19 Perfect Ground Balance: Problems from Low Ground Mineralization: At first you will overcorrect the Ground Balance. The GMT is designed to work in an environment of For example, if the sound decreases as the coil heavy iron mineralization. In some instances there...
-
Page 20: Field Use & Tuning Tips (Cont'd)
This sometimes visible. The Twin D coil on the GMT also helps in sounds like a "boing" when the ground mineral and eliminating these pests. Wet alkalai washes can be... - Page 21 If so, a series of separations will the desired results in your area. Therefore, if you quickly expose the nugget. have been operating your GMT at the full level of GAIN (10) and you determine that this is too high Handful Of Dirt:...
-
Page 22: Field Use & Tuning Tips (Cont'd)
% Iron Probability Blocking: not get you the Gold in heavy mineralization as In operating the GMT, we have noticed that the % well as lower GAIN and a bit of faster SAT. of Iron Probability Block Graph is very dependable. - Page 23 This can also be the case with a pocket of negative mineralization. The more you use the GMT, the more you will come to appreciate the very fast tracking which allows you to work with little effort in the changing...
-
Page 24: Chapter 6 Information
Chapter 6 GMT Information Information Proper care I. Cleaning III. Storage A. Both the coiland rod are waterproof and can A. When the instrument is not in use, make sure be cleaned with fresh water and mild soap. The it is turned OFF. -
Page 25: Service
Chapter 6 GMT Information Service White’s reputation has been built on quality products backed by quality service. Our Factory Authorized Service Centers are factory trained and equipped. They offer the same quality service as the factory. Service before and after the sale is the cornerstone of our customer relations. -
Page 26: Warranty
Chapter 6 GMT Information Warranty If within two years (24 months) from the original Duration of any implied warranty (e.g., date of purchase, your White's detector fails due to merchantability and fitness for a particular purpose) defects in either material or workmanship, White's shall not be longer than the stated warranty. -
Page 27: Warranty Transfer
Chapter 6 GMT Information Warranty Transfer If for any reason you should sell your GMT prior to the date the warranty expires, the remaining warranty is transferable. This transfer is authorized by calling 1-800-547- 6911, and getting an Authorization Number. -
Page 28: Video And Owner Information
A Video cassette detailing the proper use of the Goldmaster GMT will be available soon. This video explains how to use the GMT in the field, as well as explaining the many varied options. Intended for English speaking persons, it is recorded on VHS format. - Page 29 (+) and (-) mineralization. The GMT has made it easier to achieve and monitor ground rejection by utilizing digital microprocessor soft- ware to automatically track out (eliminate) ground mineralization.
- Page 30 ® White's Electronics, Inc. 1011 Pleasant Valley Road Sweet Home, OR 97386 USA Distribution: 1-800-547-6911 Factory: 1-541-367-6121 FAX: 1-541-367-2968 Web Site: http://www.whiteselectronics.com ©White's Electronics, Inc. P/N 621-0428 Printed in USA Rev. 8/2001...
Need help?
Do you have a question about the GMT and is the answer not in the manual?
Questions and answers