AT Gold
™
21
FreQueNCy ADJuSTMeNT
FREQ
Adjust Pushbutton
Press the FreQ pushbutton once to display the current
frequency setting. Press again to adjust to a different setting.
The
AT Gold
is capable of operating at four slightly different
frequencies in order to minimize the interference caused by
electrical sources (e.g. power lines) or other metal detectors.
Press the FreQ button to scroll through the frequency
options to find one with the least amount of interference. The
frequency setting (F1–F4) will be indicated on the lCD.
Note: Frequency adjustments are small and therefore do
not affect target detection capabilities.
over a clean area and listen for ground responses. If ground
responses occur, increase the GB Window by 1, exit to All
Metal Mode and sweep the coil again. repeat this process
until the ground response reduces to an acceptable level.
It is recommended to use the minimum GB Window setting
needed. using an excessive setting could reduce sensitivity
to faint targets. The default value of 2 is optimum for most
conditions.
As described above, this setting allows the detector to
simultaneously ground balance to a range of values. For
example, with Ground Balance set to 83, and the GB Window
set to 2, the All Metal Mode will be operating with an
effective ground balance spread of 83 ± 2 (81 to 85); thereby
minimizing the subtle responses caused by ground variations
within this range. This feature can even be used to reduce the
response to some hot rocks and terra cotta.
With the GB Window set to zero (0), the
AT Gold
will operate
like a conventional All Metal detector.
