Troy Custom Detectors Shadow X3
24
TARGET DEPTH
¢
¢
AUDIO DEPTH READING
- with practice, you will begin to learn and
recognize that a fairly accurate determination of target depth can be
made by analyzing the volume and frequency of the VCO pinpoint signal
and/or the intensity (modulation) of the
DISC
mode signal.
The
VCO PP
switch is a momentary type and must be held in to enter
and stay in the VCO pinpoint mode. Once the pushbutton is released,
the detector returns to the
DISC
mode.
If necessary, targets can be detuned by quick, repeated pressings of the
VCO PP
pushbutton. De-tuning is a method of ‘shrinking’ the target
signal so that its location beneath the search coil is confined to a very
small area, making pinpointing and retrieval easier and much more
accurate.
To de-tune a target signal, first find its approximate center by pressing
and holding the
VCO PP
pushbutton. Once at the target center, quickly
release and again press and hold the
VCO PP
pushbutton. You will no-
tice that the target is smaller and not as pronounced. Sometimes, the
target may disappear when de-tuning. If so, try again.
21
Owner Instruction Manual
TARGET CHECK
™ is a unique operating feature of Troy Custom
Detectors used to quickly and accurately compare target signals to
factory-calibrated preset discrimination (rejection) set-points.
This method of quick-comparison informs the operator as to whether a
buried, unidentified target is conductively above or below the
TARGET
CHECK
™ and
DISC
crimination set-points.
The
TARGET CHECK
™ switch is a three-position spring-return toggle
switch that when released from the
ZINC
or
NICKEL
position always
returns to its center (
NORMAL
) position
.
The
NORMAL
position engages the
DISC
control on the front panel.
ZINC
- This setting ‘switches-in’ enough preset discrimination to elimi-
nate all targets including most aluminum screw caps, Zinc Cents, Indian
Head Cents and certain Wheat Cents on down through the pull tab,
nickel, foil and small and medium iron conductivity ranges.
Keep in mind that the
ZINC
selection can eliminate Indian Head cents,
nickels and other desirable coins as well as most gold rings and many
desirable relics.
NICKEL
- This setting ‘switches-in’ enough preset discrimination to
eliminate all targets below round pull tabs including Nickels on through
foil and small iron conductivity ranges.
TARGET CHECK
™ can be used as a form of ‘reverse discrimination’.
That is, if a target does not produce a signal while
TARGET CHECK
™
TARGET CHECK™
¢
¢