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.
