White s Electronics 800 0353 User Manual
GOLDMASTER® Series
GMX SPORT
OWNER’S GUIDE
WATERPROOF GOLD DETECTOR
with XGB Technology
XGB TECHNOLOGY
XGB TECHNOLOGY is a patent-pending automatic ground balance
system. It is purpose-built for operating a high-frequency VLF gold
nugget detector in difficult ground conditions.
Traditional VLF detectors struggle to balance rapidly changing
ground mineralization and hot rocks.
With XGB technology, the GMX is able to track small changes in
soil composition as well as longer-term shifts in both ground phase
and strength. This allows it to operate in ground that traditional
VLFs struggle in.
Users have extended control over the range of XGB in the
Goldmaster’s All-Metal mode. Simply enable Iron Cancel to
expand the ground filter in moderate soils. In very challenging soil
conditions, hold the Iron Cancel button and select a higher setting
for maximum performance in variable ground.
SPECIFICATIONS
Detector Type Gold Nugget/Prospecting
Frequency 48kHz
Weight 4.0 lbs with batteries
Length 45 inches to 55 inches, Assembled
Batteries 8aa Included
Battery Life 20-40 hrs
Search Coil 6” Concentric included
IP Rating IP 68 waterproof to 10 feet
Audio Speaker or 1/4” Headphone
Ground Balance XGB and TracLock
Warranty 2 Year Transferrable
Unique Features Ground Scan, All-Metal Disc.
Optional Coils 4” x 6” GMX or 4” x 6” 24K
Introduction
White’s Electronics, Inc.’s Goldmaster® platform has served electronic prospectors
well over the last 20 plus years, resulting in income for professional miners and
diversion for hobbyists. With modern advances in DSP, improved ergonomics,
and performance increases, the GMX SPORT represents the next generation of
high-frequency induction-balance waterproof gold nugget detectors.
When our engineers set out to build the GMX, the goal was simple: Improve the user’s
chance to find gold by combining the electronics of the GM 24K with the waterproof,
rugged design of the MX SPORT.
The obvious way to achieve this goal is increased sensitivity. The GMX features a 54%
increase in coil voltage over the GMT. You will see this in increased sensitivity to small
nuggets. Even at lower gain settings the GMX is an extremely “hot” machine on small
gold and specimen nuggets.
Experienced electronic prospectors know that more sensitivity is not the only answer
to increasing the odds of success in prospecting. A machine’s ability to track and
cancel the ground is often the biggest challenge we face in our search for gold. That’s
why the GMX Sport features the all-new ground tracking system we call “XGB” (Xtreme
Ground Balance). This system works with multiple ground points to ensure stable operation. The GMX also features Iron/Hot-Rock cancellation in both audio modes, expanding the ground range even more for quiet operation in the most challenging ground.
When the nuggets are few and far between, prospectors often have more success
at sluicing, panning, or dry washing. You will find an all-new mode in the GMX, called
“Ground Scan” that can help you successfully track and mark black sand or other
mineral deposits in stream beds, washes, or even under ground (where the backlight
comes in handy).
In addition to these new features, old standbys like Variable Self-Adjusting Threshold
(vSAT), Ground Grab, TracLock, and adjustable audio options help users to setup the
machine as they see fit based on ground conditions and personal preference. Where
other companies rely on completely automatic operation for limited uses, White’s
Electronics, Inc. believes in giving you the ability to adjust a machine for a wider variety
of conditions, hopefully resulting in more gold in your pouch.
With a combination of patience, research, and a little luck, you’ll get your GMX’s coil
over gold. But be warned, if you don’t have gold fever yet you will after your first nugget!
Good luck and happy hunting,
White’s Electronics
Quick Start
Table of Contents
Assembly ............................................................................................................ 2
Batteries, FCC and CE Compliance ........................................................4
Interface ............................................................................................................. 5
Quick Start .........................................................................................................6
Special Notice .................................................................................................. 7
Controls
Sensitivity ....................................................................................................8
Volume/Threshold .............................................................................10
V-Sat ..........................................................................................................11
Target ID .................................................................................................. 12
Audio .......................................................................................................... 12
Iron Cancel/Discrimination ............................................................ 12
Gound Controls ..................................................................................... 14
XGB ............................................................................................................14
TracLock .................................................................................................. 15
Ground Grab .......................................................................................... 15
Ground Scan .......................................................................................... 15
Searching
Pinpoint Technique ..............................................................................16
Non-Motion Pinpoint Mode ............................................................. 16
Headphones ........................................................................................... 17
Field Use & Tuning .............................................................................. 18
Backlight & Battery Life .................................................................... 19
Hot Rocks ................................................................................................ 20
Sensitivity & XGB .................................................................................21
Pinpointing ..............................................................................................22
Sensitivity and Variable SAT ...........................................................22
Target ID .................................................................................................. 23
Frequency Shift ..................................................................................... 23
Proper Care ................................................................................................... 24
Service ..............................................................................................................25
Warranty ....................................................................................... Back Cover
Assembly
Search Coil
Non-metallic
Washers
Camlock
Fiber Bolt & Thumbnut
Fiber Rod
Center Rod
Search Coil
Cable
1. Remove all parts from the shipping carton and check assembly
diagram to ensure all parts are present.
2. Install black rubber washers on ber lower rod; attach search coil
to lower ber rod. Use only the nonmetallic washers, ber bolt,
and ber thumbnut provided to secure search coil loop to the
lower ber rod.
3. Insert lower ber rod into center rod so that the spring buttons
line up with one of the length-adjustment holes in the center rod.
Turn the camlock to eliminate any slack.
4. Insert the center extension rod into the hand-grip section. Turn
the camlock to eliminate any slack.
5. Wind the search coil cable around the rods, rst revolution over
the top of the rod, all the way to the display pod. Plug the cable
into the connector on the back of the display. When looking at the
back of the display, it is the connector on the right. Tighten the
retainer ring securely.
2
Control Pod
Display
Control Buttons
Velcro Armstrap
Camlock
Search Coil
Connector
Handgrip
Battery Holder with Cap
6. read the velcro arm strap through the slots on the armcup. With
your arm in position, fold the strap over onto the velcro so that the
strap is loose enough to to pull your arm in and out of the armcup.
7. Grip the detector and sweep the search coil over the oor. If the t feels
uncomfortable, adjust the position of the lower ber rod. e ideal
position allows you to stand up straight and sweep the search coil over
the ground without stooping over.
8. Install eight “AA” batteries in the battery holder carefully noting the +
& - positions marked inside the battery holder. Insert the battery pack,
lining up the contacts. Tighten the battery seal.
3
Tips on Batteries
• e GMX Sport operates for up to 40 hours (without backlight) using
eight quality “AA” batteries.
• High-quality “AA” alkaline batteries are recommended. Rechargeable
NiCad, Nickel Metal Hydride, or other similar “AA” substitutions work
well. Batteries near or above 2 volts per cell and higher are not recommended.
• Battery life will change with battery type, operating temperature, and
backlight use. Lowering the volume of the built in speaker or using
headphones extends battery life.
FCC COMPLIANCE
is device complies with part 15 of the FCC Rules. Operation is subject to the following
conditions:
1. is device may not cause harmful interference.
2. is device must accept any interference received, including interference that may
cause undesired operation.
Caution: Changes or modications not expressly approved by White’s Electronics, Inc.
could void your authority to operate this product.
CE COMPLIANCE
is device operates within the following frequency range and maximum power output:
1. Frequency band in which the radio equipment operates: 47kHz-48kHz
2. Maximum radio-frequency power transmitted in the frequency band in which the
radio equipment operates: 250mW
4
GMX SPORT Quick Start
GMX SPORT Interface
Target ID #
Higher number,
Better chance of gold
Beep Mode On
Iron Cancel On
Volume Level
SAT/Threshold Level
Audio Mode
SAT +/-
Volume +/-
Threshold +/-
Visual Target ID
Ground strength in
Ground Scan mode
Backlight On
TracLock On
Sensitivity
Power On/
Backlight
TracLock
Ground Scan
Off
Iron Cancel
Disc LO/HI
NOTE: Regular text = button TAP,
Adjust other settings
Ground Grab/Exit Setting Selection
Pinpoint (non-motion)
Italic text = button HOLD
Sensitivity
5
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