Preferences Menu; Contrast; Pinpoint Mode - Minelab E-Trac Instruction Manual

Preferences Menu

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The Preferences Menu allows you to change
the appearance of E-Trac's Detection Screens
by using settings such as Contrast, Display
Timeout, and Show Sensitivity. It also allows
you to select a different Pinpoint Mode and
perform a Master Reset.

Contrast

Range: 1–30
Factory Preset: 15
The Contrast setting allows you to adjust the
level of LCD contrast to best suit the current
light conditions. The LCD may become
difficult to see in either bright or overcast
conditions.
To adjust the Contrast:
1 Press the Menu button
2 Scroll across to Preferences (using the Right
or Left Navigation button)
3 Scroll down to Contrast (using the Down
Navigation button)
4 Press either the Left or Right Navigation
button to change the setting
5 Press the Detect button to exit the Menu
and resume detecting

Pinpoint Mode

Range: Normal or Sizing
Factory Preset: Normal
There are three different Pinpoint Modes;
Normal, Sizing and Fixed.
Normal
After activating Pinpoint, the first sweep over
a target will generate a wide audio response.
Wide response
With each sweep, the zero point, or baseline
of the audio response, is set to a new
level, just below the maximum signal. The
Sensitivity is also adjusted. These adjustments
keep the audio response narrow, but will
allow targets of different depths to be
pinpointed with equal precision.
Narrow response
A long pause between coil sweeps will
produce a wide audio response, due to
the baseline falling between sweeps. Short
pauses between sweeps will keep the audio
responses narrow.
Small or deep targets may not be detected
after sweeping over a target with a large
signal. Some time is required to allow the
baseline to fall to a sufficiently low level.
Sizing
After activating Pinpoint, the baseline is set to
a signal level. From then on, the baseline and
the sensitivity are held at constant levels.
When sweeping over a target, the detector
produces a linear audio tone. The pitch of
the tone is proportional to the strength
of the target response, and the volume is
proportional to the position of the target
under the coil.
Activating Pinpoint while the coil is away
from the target will allow the extent of the
target to be determined.
Full response
Activating Pinpoint while the coil is near
the target will allow portions of the target
response to be masked.
Masked response
Note: Do not initiate Pinpoint while over the
centre of the target or the whole target may be
masked.
To change the Pinpoint Mode:
1 Press the Menu button
2 Scroll across to Preferences (using the Right
or Left Navigation button)
3 Scroll down to Pinpoint Mode (using the
Down Navigation button)
4 Press either the Left or Right Navigation
button to change the mode
5 Press the Detect button to exit the Menu
and resume detecting
Note: Pinpoint turns E-Trac into an 'all metal'
detector, disabling discrimination.
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