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Metal Detector
GPX 4800
Minelab GPX 4800 User Manual
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34
T
hr
eshold
C
on
t
i
n
ued
..
.
Wh
en th
e T
hresho
ld is to
o
high a
fa
int signal is
masked
and
only
the p
eak o
f th
e
lou
d signa
l is audi
ble
ab
ove the
Th
reshol
d.
Wi
th th
e T
hresho
ld se
t
corre
c
tly b
oth
target
signals
are easily
heard.
A T
hresho
ld l
evel th
at is too
low
doe
s not
allow f
aint t
arget
signals to b
e h
eard.
Threshold level
Audio Range that
you are able to hear
Threshold
level
Audio
Range
that
you
are
able
to
hear
Audio
Range
that
you
are
able
to
hear
Threshold
level
F
a
i
n
t
s
i
g
n
a
l
m
a
s
k
e
d
F
ai
n
t
s
ig
n
al
V
er
y
l
ou
d
s
ig
n
al
F
a
i
n
t
s
i
g
n
a
l
n
o
w
i
n
a
u
d
i
b
l
e
L
o
u
d
s
i
g
n
a
l
a
u
d
i
b
l
e
L
o
u
d
s
i
g
n
a
l
j
u
s
t
a
u
d
i
b
l
e
Threshold
level
Audio
Range
that
you
are
able
to
hear
Threshold
level
Audio
Range
that
you
are
able
to
hear
Audio Range that
you are able to hear
Threshold level
F
ai
n
t
s
ig
n
al
m
as
k
ed
F
a
i
n
t
s
i
g
n
a
l
V
e
r
y
l
o
u
d
s
i
g
n
a
l
F
a
i
n
t
s
i
g
n
a
l
n
o
w
i
n
a
u
d
i
b
l
e
L
o
u
d
s
i
g
n
a
l
a
u
d
i
b
l
e
L
ou
d
s
i
g
na
l
j
us
t
a
u
d
ib
l
e
Threshold
level
Audio
Range
that
you
are
able
to
hear
Threshold level
Audio Range that
you are able to hear
Audio
Range
that
you
are
able
to
hear
Threshold
level
F
a
i
n
t
s
i
g
n
a
l
m
a
s
k
e
d
F
a
i
n
t
s
i
g
n
a
l
V
e
r
y
l
o
u
d
s
i
g
n
a
l
F
ai
n
t
s
i
gn
a
l
n
ow
in
a
u
di
b
le
L
ou
d
s
i
g
na
l
a
ud
i
bl
e
L
o
u
d
s
i
g
n
a
l
j
u
s
t
a
u
d
i
b
l
e
35
37
Table of Contents
Quick Start
2
Table of Contents
4
List of Parts
8
Assembly
10
Adjusting the Detector for Comfortable Detecting
18
Charging the Battery
20
Battery LED Patterns
22
Taking Care of Your Battery
23
Detecting Basics
24
Detector Sounds
25
Front Control Panel
26
Rear Control Panel
27
Turning the Detector on
28
LCD Menu Structure
29
Search Mode
30
Tune / Reducing Electrical Interference
33
Auto Tune
34
Threshold / Adjusting the Background Audio Level
35
Ground Balance Compensating for Ground Mineralisation
40
Ground Balance Procedure for Tracking
42
Ground Balance Procedure for Fixed
44
Restoring Factory Presets
46
Factory Presets
48
Function Select Control Scrolling through Functions
50
Setting Control Adjusting Settings
51
LCD Backlight
52
Battery Test Viewing the Battery Voltage
53
Volume Limit / Setting the Maximum Volume of All Sounds
54
Ground Balance Type
56
Ground Balance Procedure for Specific
58
Special Soil/Timings
59
Manual Tune / Reducing Electrical Interference
61
Changing Search Modes / Via the LCD
62
Rx Gain / Adjusting the Sensitivity of the Detector
65
Audio Type Changing the Audio Response of Target Signals
66
Audio Tone / Adjusting the Pitch of the Threshold
67
Stabilizer
68
Signal Peak / Adjusting the Pitch Variation of Target Signals
69
Target Volume
70
Response / Inverting the Pitch of the Target Signal
71
Tracking Speed Keeping up with Changing Ground
72
Iron Reject
74
Iron Reject Rejecting Ferrous Targets
76
Custom Name / Changing Your Custom Search Mode Name
78
Pinpointing Locating the Target
79
Recovering the Target
81
Identifying Target Signals
83
Detecting Tips
83
Commander Coils
85
Choosing the Right Coil for the Job
87
Troubleshooting
89
Control Box
90
False Signals
90
Glossary
90
Search Coil
92
Taking Care of Your Detector
93
User Preferences
94
Technical Specifications
96
Warranty
97
Service and Repair Form
98
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Minelab GPX 4800 Specifications
General
Brand
Minelab
Model
GPX 4800
Category
Metal Detector
Language
English
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