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Related Manuals for White's GARRETT GOLDMASTER 24k
Summary of Contents for White's GARRETT GOLDMASTER 24k
- Page 1 U S E R M A N UA L Original GM24k detector...
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Page 2: Table Of Contents
Goldmaster 24k Contents Assembly Iron Cancel Adjustment ..........13 ....................Ground Balance Controls / XGB ......14 Batteries TracLock/Ground Grab ..........15 ....................Ground Scan ..............15 GM24k Quick Start Guide ......... 6 Searching ..............16 Controls ............... 8 Pinpoint Techniques .............16 Sensitivity Control ............8 Headphones ..............17 Sensitivity Adjustment ..........8 Field Use and Tuning Tips .........18... -
Page 3: Assembly
GM24k Assembly Assembly Garrett GM24k contents: 1. S-shaped stem 2. Middle stem 3. Lower stem 4. Searchcoil 5. Control box 6. Armrest with armrest strap 7. 8x AA holder Assembly Instructions to the lower stem. Then insert into middle stem so that stainless steel spring buttons line up and lock into one of the adjustment holes in the middle 1. - Page 4 GM24k Assembly Not shown: warranty card and quick start guide Lower and middle stems Washers, nut, bolt Rubber feet Headphone adaptor Velcro cable retainers AA battery Headphones subject Headphone jack dust cover 12v charger cables recharging kit with to change for car or battery universal adaptors 4.
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Page 5: Batteries
GM24k Batteries Batteries Rechargeable vs Alkaline Above: battery icon 1. The standard battery holder holds eight “AA” cell batteries. Garrett includes eight NiMH re- chargeable batteries and a recharger with the GM24k. During normal searching conditions, you can expect about 20 hours of hunting time from fully charged batteries. -
Page 6: Gm24K Quick Start Guide
GM24k Quick Start Instructions GM24k Interface Target ID # Visual Target ID Ground strength in Higher number, Ground Scan mode Better chance of gold Beep Mode On Backlight On Iron Cancel On TracLock On Sensitivity Volume Level SAT/Threshold Level Power On/ Audio Mode Backlight SAT +/-... - Page 7 GM24k Quick Start Quick Start SPECIAL NOTICE Instructions With the GM24k properly assembled and the If you attempt to demonstrate or test the batteries installed, follow the instructions below to GM24k by waving targets in the air in start finding nuggets. front of the search coil, it is ESSENTIAL to have the GROUND BALANCE toggle Turn the GM24k on by pressing the POWER...
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Page 8: Controls
GM24k Controls Controls Sensitivity Control With the SENSITIVITY control, you increase the signal strength coming from the ground. You might expect increased signal strength to always find more nuggets at greater depths. However, high ground Current mineralization will “bounce” the signal back and mask good targets. - Page 9 GM24k Controls Sensitivity Adjustment (cont’d) 5. The object of increasing the SENSITIVITY is to get the maximum available depth from the detector WITHOUT causing the overload message to appear, which indicates an overload of the circuit. adjustment 6. In addition, any increase in SENSITIVITY should NOT BE at the expense of maintaining a smooth and constant THRESHOLD “hum”.
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Page 10: Volume/Threshold Adjustment
GM24k Controls Volume/Threshold Adjustment The VOLUME control on your GM24k only adjusts the sound level of target sounds and confirmation beeps. It is used in conjunc- tion with the THRESHOLD to give you the most control over the dynamic range of your detector. -
Page 11: Hot Rocks
GM24k Controls SAT Speed Control The variable SAT (Self Adjusting Threshold) speed control adjusts the speed that the GM24k recovers its threshold hum when the searchcoil passes over changes in mineralization. This set- ting is adjusted by holding the MUSIC button and then adjusting the SAT up or down between 0 (off), 1 (medium), or 2 (fast). -
Page 12: Target Id
GM24k Controls Target ID signal. Sometimes very small gold can produce a low Target ID number, or in the case of sub- grain-sized nuggets, no number at all. This is why The GM24k features two types of Target ID. The many electronic prospectors hunt mostly based on most obvious is the large numbers displayed in the sound. -
Page 13: Iron Cancel (Discrimination)
GM24k Controls Iron Cancel (Discrimination) When detecting for gold nuggets, it is often best to “dig it all. ” Gold can have various sizes, Disc Setting shapes, and be embedded in iron rock, so it is nearly impossible to account for every nugget (2 bars) in the ground and only dig gold. -
Page 14: Ground Balance Controls / Xgb
GM24k Controls Ground Balance Ground strength Controls in GroundScan Gold is usually found in mineralized Ground Phase ground, and the GM24k has XGB en- in Ground Scan abled by default when the machine is powered on. This makes it easy to get TracLock ON started prospecting, as the machine automatically cancels out unwanted... -
Page 15: Traclock/Ground Grab
GM24k Controls TracLock TracLock on the GM24k is the locked, “manual” ground setting. It functions similar to the original GMT. To LOCK the ground tracking to the current setting, TAP the LOCK button. A padlock will display on the screen. This will put a hold on XGB and lock the current ground phase and strength setting. This can be useful in those cases where you may find extremely tiny gold, or when you have located a faint target. -
Page 16: Searching
GM24k Searching Searching Pinpoint Technique Due to the wide scan nature of elliptical search- coils it can be difficult to locate small targets un- der 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
GM24k Searching Headphones The headphone jack on the GM24k is located on the rear of the battery box. There is a dust cover for the headphone jack (in your parts kit) that should be used when not running headphones. Most prospectors prefer high quality stereo headphones so the GM24k is wired for stereo sound. -
Page 18: Field Use And Tuning Tips
GM24k Searching Field Use and Tuning Tips lar lookout for the tiny lead bird-shot so common in mining areas. If you are detecting these tiny targets, you are doing everything right and will eventually find gold. Putting it all together: Once you have achieved the initial ground balance, Locked GROUND BALANCE tuning for very you are ready to start searching. - Page 19 GM24k Searching As a last resort, enable the Iron Cancel feature (the Backlight and Battery Life crossed-out nail button). This will not allow those With a short tap of the power button, the GM24k’s low-range signals to break through the threshold backlight will turn on, giving increased visibility in either audio mode.
- Page 20 GM24k Searching Field Use & Tuning Tips Using a Double D coil on the GM24k will allow (cont.) the detector to operate amongst hot rocks better than a concentric. And as a last resort, the Iron Negative Hot Rocks: Cancel feature should all but silence any remain- ing hot rocks.
- Page 21 GM24k Searching Pinpointing or “X” ing the target: commonly referred to as “hot rocks. ” In most cases, pinpointing is easily performed It is not wise to keep a high level of SENSITIVITY by merely “X-ing” or criss-crossing. You can also if the detector will not operate smoothly.
- Page 22 GM24k Searching Field Use & Tuning Tips it was essential to design it so that it would tend (cont.) to call doubtful targets “non-ferrous” or “possible gold”. In this way, eliminating the possibility of mistaking gold for iron. Overload: The GM24k will overload when the coil is over Ground Scan mode tips: a large object or extremely heavy iron minerali- Prospecting takes patience.
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Page 23: Information
GM24k Information Information Proper care B. If you plan on storing your detector for I. Cleaning long, remove the battery holder from the A. Both the coil and rod are waterproof and detector and remove the batteries from the can be cleaned with fresh water and mild holder. -
Page 24: Warranty
GM24k Information Warranty Your GM24k detector is warranted for 24 months, lim- 2. Contacted your dealer for help, particularly if you ited parts and labor, but does not cover damage caused are not familiar with the GM24k detector. by alteration, modification, neglect, accident or misuse. In the event that repairs or warranty service are necessary for your GM24k, contact the retail outlet In the event you encounter problems with your GM24k... - Page 25 QUICK START Goldmaster 24k User Manual...
- Page 26 © 2021 Garrett Electronics, Inc. PN 1557000.B.0721...
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