Ultra electronic Computer Monitor AND GTAX 550 User Manual

OPERATING INSTRUCTIONS  
ULTRA GTA 500, GTAx 500, AND GTAx 550  
DETECTORS  
The control panels of these detectors have seven (7) touchpads which control all the operating  
functions of the detector. Beneath the Arm Cuff are the Battery Pack and the headphone jack.  
TOUCHPAD CONTROL FUNCTIONS:  
Power: Turns the detector on, off, or resets the detector to the factory settings.  
Press once to turn the detector on.  
As the detector starts the battery condition is checked audibly and displayed on the LCD  
Display. Also, during the detector's start-up the detector adjusts automatically for the  
elimination of ground minerals, and the audio threshold is set to a point that is just silent. The  
last used pattern of discrimination is re-established and displayed on the LCD face.  
Set Depth: (Also referred to as sensitivity). Permits the regulation of depth/sensitivity using the  
+ and - touchpads.  
Set Audio: Permits the regulation of the Audio Threshold using the + and - touchpads.  
Set Disc: (Discrimination): Permits the regulation and/or adjustment of the discrimination  
pattern by turning on and off target cursors on the lower LCD bar which shows the items to be  
rejected or accepted as targets.  
Pinpoint: Activates the Pinpointing function and causes the depth of coin-sized items to be  
shown on the Lower Scale.  
Last Mode: Switches operation between operating modes A and B.  
+ and - Arrows: Used to move the Target ID cursor when setting the discrimination notches.  
These arrows are also used when adjusting the Depth/Sensitivity, and Audio Threshold levels.  
Special Note:  
If you are ever unsure about the settings of your detector, simply press and hold the Power  
touchpad for approximately 10 seconds. The detector will emit an audio signal and the factory  
default settings will be restored.  
Graphic Display Information:  
Above the LCD Display is a guide of targets for use with the Target Cursor to assist in the  
identification of detected items. Note: All metal items will be indicated on the display but only  
those that correspond with segments which are turned on will give an audio response.  
 
location. Listen for the loudest, most pronounced audio signal. The Target ID Cursor will  
indicate the target's probable identity on the Display. The Target Guide above the cursor is an  
aid in determining the identity of the target.  
PINPOINTING:  
Precise pinpointing is an important feature of your detector. Press and hold the PINPOINT  
Touchpad and the searchcoil can remain steady and hover over the target. Slight movements  
of the searchcoil will be reflected on the Upper Scale of the GTA Display. The greatest  
deflection or illumination of segments-right to left- on the Upper Scale indicates the target is  
directly beneath the center of the searchcoil. At the same time on the Lower Scale the  
illuminated segments, left to right, indicate the depth of coin-sized items.  
Another method of Pinpointing and Depth Reading used by many treasure hunters is as  
follows. After acquiring a target, set the coil on the ground near but not directly over the target,  
then press and hold the Pinpoint Touchpad. Do not lift the coil from the surface but slide it  
around watching the LCD Display. When the two rows of segments touch each other, the  
target is beneath the center of the coil at the depth indicated by the lower scale.  
JUNK TARGETS:  
The detector in its initial factory default settings, will not respond audibly to most junk items. On  
occasion, the detector will respond with a signal that is not clear and sharp as that of a coin.  
Before digging some of these "blips" see where the target registers on the Graphic Display.  
For many trash targets the detector will show two cursors at once or will give varying target  
identities as multiple scans are made over the item.  
It is not unusual for a large object such as an aluminum soft drink can to give an audio signal  
indicating that a good target has been discovered. This is nothing to be worried about. The  
target has been located due primarily to its size, conductivity, and nearness to the searchcoil.  
When you determine that it is time to turn the detector off, it takes only a simple press of the  
POWER Touchpad.  
OPERATING ADJUSTMENTS:  
When you press the POWER Touchpad the first time, your detector is ready to operate with  
the factory settings in place and the discrimination set to find coins while eliminating most trash  
from detection (Mode B). Many hunters never change from this "Notch" pattern. If you wish to  
change operating modes however, press the Last Mode Touchpad and the detector changes  
to Mode A that is established originally, to find all metals.  
The discrimination pattern is easily adjusted to meet the operating needs of any detector  
operator. From locating only one specific item, to locating all metals, it is simply a matter of  
pressing a couple of touchpads. Press the directional arrow to move the cursor either left or  
right. When it comes to the position you wish to turn on or off, press the "Set Disc" touchpad.  
The segment then is either illuminated or not . It is so easy to customize the discrimination  
pattern to fit your own desires.  
 
Another way to change the discrimination pattern is to search as normal and when an  
unwanted target is encountered, press the "Set Disc" Touchpad and that segment will no  
longer be illuminated.  
A special note about detector operational settings. Any changes that have been made will be  
retained when the detector is turned off. These changes will remain until changed by the  
operator or until the detector is returned to the factory default settings by pressing and holding  
the POWER Touchpad.  
When the Depth Touchpad is depressed, the display will show a row of segments on the upper  
LCD bar. This is indicating the Depth/Sensitivity setting of the detector. Approximately 75% is  
the factory default setting. Hunting in some locations there may an abnormal amount of static  
or interference, in these instances it may be necessary to reduce the depth setting until the  
audio sounds become stable once again. This is also the action to take when searching with a  
companion and when near each other the detectors exhibit erratic and unstable operation.  
When searching for very small or very deep items it might be beneficial to increase the depth  
setting as much as possible, up to the point that the detector becomes unstable.  
Depressing the Audio Touchpad will graphically indicate the audio level established. Changes  
to this level can easily be made by pressing the + or - touchpads until the desired threshold  
level is attained.  
BATTERIES:  
GTA Series detectors require eight (8) AA batteries. They are contained in two battery holders  
of four each. These holders slide into the Battery Pack beneath the Arm Cuff assembly. When  
replacing batteries observe that the polarity of the batteries is correct in the holders and that  
the holders are inserted in to the case with the rivet at the bottom of the holder towards the  
center of the case. Failure to install the batteries correctly will result in electronic damage to  
the detector which will require time lost from hunting and an avoidable expense.  
The detector is supplied with Alkaline batteries for long life, but rechargeable batteries may be  
used if desired. There is no provision for on-board recharging, however.  
When storing the detector for extended periods the batteries should be removed from the  
detector and from the holders.  
Note: When re-installing batteries or after replacing batteries, the detector should be reset to  
the factory default settings.  
Battery Test:  
Each time the detector is turned on the batteries are automatically and audibly checked. Three  
or four bars on the battery scale indicate the batteries are very good, two bars and the  
batteries are adequate. One single bar and it is time to replace the batteries.  
MAINTENANCE  
 
Always remember that your detector is a sensitive electronic instrument. It is built to  
withstand rugged treatment in the outdoors. Use your Garrett detector to the fullest extent  
possible, and never feel that you have to baby it. Yet, always protect the detector and  
handle it with reasonable care.  
Try to avoid temperature extremes as much as possible, such as storing the detector in an  
automobile trunk during hot summer months or outdoors in sub-freezing weather.  
Keep you detector clean. Always wipe the housing after use, and wash the coil when  
necessary. Protect your instrument from dust and sand as much as possible.  
Your searchcoil is submersible. The control housing is not! Never submerge the control  
housing and always protect it from heavy mist, rain or blowing surf.  
Disassemble the stem and wipe it clean after use in sandy areas.  
When storing longer that about one month, remove batteries from the detector.  
REPAIR SERVICE  
In case of difficulty, read this Owner’s Manual again thoroughly to make certain your  
detector is not inoperable needlessly. Your dealer may also be able to offer advice.  
When your detector must be returned to the factory for service, always include a letter that  
describes its problem as fully as possible. Before you return your detector to the Garrett  
factory, make certain:  
You have checked batteries, switches and connectors. (Check batteries especially closely.  
They are the most common cause of detector “failure”.)  
You have checked with your dealer, particularly if you are not familiar with this type  
detector.  
You have included a note with the detector describing the problems you are encountering  
with this detector and conditions under which they occur. Make certain to include your  
name, address and a phone number where you can be contacted between 8:30 a.m. and 4  
p.m., Central Time.  
You have carefully packed the detector in its original shipping carton or other suitable box.  
Make certain that proper insulation or packing material is used to keep all parts secure. Do  
not ship stems or headphones unless they are part of the problem. Be certain to return all  
coils.  
Ship to Garrett Metal Detectors, 1881 W. State St., Garland, TX 75042.  
You can call Garrett’s Customer Service Department (800-527-4011) if you have further  
questions.  
 
Please allow approximately one week for Garrett technicians to examine and repair your  
detector after they receive it, plus another week for return shipping to you. All equipment  
will be returned UPS or parcel post unless written authorization is given by you to ship  
collect by air parcel post, UPS Blue (air) or air freight.  
MIND YOUR MANNERS  
Filling holes and obeying no trespassing signs are but two requirements of a dedicated metal  
detector hobbyist. A sincere request that Charles Garrett makes to every user of one of his  
detectors is that each place searched be left in a better condition than it was found.  
Thousands of individuals and organizations have adopted this formal Metal Detector Operators  
Code of Ethics:  
I will respect private and public property, all historical and archaeological sites and will do  
no metal detecting on these lands without proper permission.  
I will keep informed on and obey all laws, regulations and rules governing federal, state and  
local public lands.  
I will aid law enforcement officials whenever possible.  
I will cause no willful damage to property of any kind, including fence, signs and buildings  
and will always fill holes I dig.  
I will not destroy property, buildings or the remains of ghost towns and other deserted  
structures.  
I will not leave litter or uncovered items lying around. I will carry all trash and dug targets  
with me when I leave each search area.  
I will observe the Golden Rule, using good outdoor manners and conducting myself at all  
times in a manner which will add to the stature and public image of all people engaged in  
the field of metal detection.  
WARNING!  
Any metal detector may discover underground power lines, explosives or other items which  
when struck could cause personal injury. When searching for treasure with your detector,  
observe these precautions:  
Do not hunt in an area where you believe there may be shallowly buried underground  
electric lines or pipes.  
Do not hunt in a military zone where bombs or other explosives may be buried.  
 
Avoid striking any line known to be or suspected to be carrying electrical power.  
Do not disturb any pipeline, particularly if it could be carrying flammable gas or liquid.  
Use reasonable caution in digging toward any target, particularly in areas where you are  
uncertain of underground conditions.  
PATENT PROTECTION: Proof of Garrett excellence is the recognition given them by the following  
United States patents: 4,709,213; 4,488,115; 4,700,139; 4,398,104; 4,423,377; 4,303,879; 4,334,191;  
3,662,255; 4,162,969; 4,334,192; 5,148,151; 5,138,262; 5,721,489; 5,786,696; 5,969,528; Design  
274,704 and 297,221; Design 333,990; G.B. Design 2,011,852; Australia Design 111,674 and other  
patents pending  
 

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