White’s Electronics Coinmaster GT - Manual (Page 7)

Page 7
Coinmaster GT
Owner’s Manual
Controls
ON/OFF
Besides the obvious, the
ON/OFF
button also controls the
display backlight. Press and hold the button to toggle the back-
light.
SENS
The
Sensitivity
control increases or decreases the respon-
siveness of the CoinGT. Normally, this determines how deep the
detector will “see” a target.
However, increasing the sensitivity not only increases the
response to target signals, but also that of ground signals and
electromagnetic interference (EMI). A common mistake is to
assume that higher sensitivity will always give better depth. In
air tests this is generally true, but ground results can depend on
the amount and type of mineralization.
In general, run the sensitivity as high as possible while
maintaining smooth operation. If the audio is chattery or the
ground is causing overload, reduce the sensitivity.
DISC
The Discrimination control allows you to enable or disable
the audio response for select ranges of targets. The CoinGT has
9 ranges:
1. Small iron
2. Large iron
3. Foil
4. Nickel
5. Pull tab
6. Zinc cent
7. Copper cent
8. Small silver
9. Large silver