Ultra electronic AND GTAX 550 - Manual (Page 4)

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