21
20
Notice the segment status along the arc, and the discrimination parameters they
represent, vary as you adjust the discrimination level with
+
or
-
.
For DISC values (at bottom right-hand corner of screen) up to 40:
- Operation is tone discrimination only
• No targets are eliminated from detection
- Target-IDs less than the DISC value induce a LOW tone
• represented by shaded segments
- Target-IDs greater than the DISC value induce v.C.O. audio
• represented by solid segments
for DISC values between 41 and 79:
- Targets in the blank segment region are not detected.
- Target-IDs less than the DISC value induce a LOW tone
• represented by shaded segments
- Target-IDs greater than or equal to the DISC value induce v.C.O. audio
• represented by solid segments
at DISC value = 80:
- All detected targets induce HIGH tones.
• represented by solid segments
- There are no LOW tones
No targets under 80 are detected.
Here is an example of one possible setting:
This discrimination interface for the Gold Bug
®
was designed especially for relic-hunting.
relic hunters want control over what sizes of iron are detected, and also control over
which targets are detected with a low-tone. Target values of 40 or less are ferrous.
This value
and higher
will induce
a
HIGH
tone
Values less
than 20 will
NOT BE
DETECTED
Values from 20 to 49
will induce a
LOW
tone
Values from 50 to 100
will induce a
HIGH
tone
OPERATING IN DISCRIMINATION M ODE
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 HIGH tones.
b. This value is the lowest target value which will be detected with a
HIGH 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
Suggestion: Try changing the
settings, watch the screen, and
pass objects over the searchcoil at
each setting. It will quickly become
obvious how these controls work.
Summary of Contents for Gold Bug
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