19
Using PINPOINT
Press-and-Hold the Pinpoint button to narrow down the location of a buried metal object.
Pinpoint is a mode of detection which does not require the searchcoil to be in motion.
A motionless searchcoil held over a metal object will induce a hum; volume and
pitch of the hum increase with target strength.
The approximate target depth, in inches, will be indicated in the center of the screen.
The depth scale is calibrated to coin-sized objects.
Relative depth is indicated for larger or smaller objects.
Upon releasing the button, you will return to the motion Discrimination detection mode.
If you keep the Pinpoint button depressed for a long time, the audio tone may begin to drift.
If you plan to search like this, release and re-press the button periodically to avoid
drift. Drift may result in a loudening sound or a reduced sensitivity with no sound.
See the manual section on Target Pinpointing for how to narrow down a target’s location.
This technique is indispensable as long-buried metals can look exactly like the
surrounding soil to the naked eye. If you are not adept at pinpointing, digging up a
small metal object can drive you crazy. So learn how to narrow-it-down.
READING THE DISPLAY
TARGET ID
Each time you pass the searchcoil over a metal object, a 2-digit value will appear in
the center of the display. See the manual section on Target Identification for a better
understand of these values.
Three segments will simultaneously appear above the arc at the top of the screen.
This represents the same target identification.
Target Scale
This display works as in the All-Metal mode.
The arc across the top classifies metal objects.
Each time a target is detected three segments will illuminate above the arc.
The segments will remain illuminated for three seconds.
This indication shows the approximate classification of the buried metal object.
See the section on Target Display for a more detailed explanation.
Iron is on the left. U.S. dimes and quarters are to the far right.
In an air test, gold indicates right of center -- the larger the gold piece, the
farther to the right.
In the ground, the I.D. of gold may jump around with each pass of the coil.
SIGNAL
Each time a target is detected, bars will illuminate showing the strength of the target’s signal.
If all 7 bars illuminate, the target signal is strong.
This may be a large metal object.
Or it may be a coin-sized metal object close to the surface.
If only a few bars illuminate, the target signal is weak.
This may be a deeply buried object, even a big one.
Or it may be a very, very small metal object, close to the surface.
The depth of a coin-sized object can be confirmed using Pinpoint.
18
In Discrimination mode, pressing
+
or
–
will change two detection parameters:
1. Tone Identification
2. Target Elimination
As the level of discrimination changes, the target segments along the arc on the
screen will be displayed in one of three states:
1. Blank (no segments displayed)
2. Grey (segments displayed in a shaded color)
3. Black (segments are solid black)
The segments along the arc will remain illuminated in this state as you are
pressing
+
or
–
.
This displays your chosen target discrimination parameters.
At any time during operation, you can view the discrimination settings in one of
two ways:
1. On the bottom-right of the screen the DISC value is always illuminated.
a. This value is the division between the LOW tones and V.C.O. tones.
b. This value is the lowest target value which will be detected with a
V.C.O. tone.
2. Whenever you press
+
or
–
, the arc will illuminate and show your
current detection parameters.
The first press of
+
or
–
will change the discriminate level by one value.
When a target is detected, the rectangular segments representing the target
category are illuminated.
Discrimination Control continued on next page
OPERATING IN DISCRIMINATION M ODE
OPERATING IN DISCRIMINATION M ODE
