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Owner's 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.
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Summary of Contents for Garrett AND GTAX 550
- Page 1 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.
- Page 2 The Upper Scale of the LCD indicates the target found, and the setting levels of the Depth and Audio modes. This scale indicates the maximum Pinpoint signal. It also shows the cursor location for changing discrimination notches. The Lower Scale of the LCD indicates the discrimination segments. Those that are illuminated represent the discrimination pattern established.
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Page 3: Junk Targets
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. -
Page 4: Maintenance
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. -
Page 5: Repair Service
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. -
Page 6: Mind Your Manners
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. - Page 7 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.