Fisher F4 User Guide
OPERATING
MANUAL
Use ALKALINE
Batteries ONLY
TABLE OF CONTENTS
TTeerrmmiinnoollooggy
SSeettttiinngg UUp
BBaatttteerriiees
HHeeaaddpphhoonneess .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..5
QQuuiicckk--SSttaarrtt DDeemmo
CCoonnttrrooll PPaanneell .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..88--111
SSeennssiittiivviittyy .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..8
AAuuttoo TTuunnee .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..8
DDiissccrriimmiinnaattiioonn CCoonnttrrooll .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..9
PPiinnppooiinntt .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..110
DDiisscc .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..110
NNoottcchh .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..111
GGrroouunndd BBaallaanncciinng
QQuuiicckk GGrroouunndd BBaallaanncciinng
44--TToonnee AAuuddiioo SSyysstteemm .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..114
DDeepptthh aanndd TTaarrggeett DDiissppllaayy .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..1155--116
TTaarrggeett RReeaaddoouutt TTaabbllee .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..116
DDDD CCooiill CChhaarraacctteerriissttiiccss .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..117
BBoottttllee CCaapp DDiissccrriimmiinnaattiioonn .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..117
SSwweeeett SSppoott .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..117
SSeennssiittiivviittyy AAddjjuussttmmeennt
EElleeccttrroommaaggnneettiicc IInntteerrffeerreennccee .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..118
SSeevveerree GGrroouunndd CCoonnddiittiioonnss .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..118
SSeeaarrcchh TTeecchhnniiqquuees
TTaarrggeett VVeerriiffiiccaattiioonn .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..119
PPiinnppooiinnttiinngg wwiitthh mmoottiioonn mmooddeess .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..119
TTaarrggeett PPiinnppooiinnttiinngg ((NNoo mmoottiioonn)
CCooiill DDrriifftt .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .
TTrreeaassuurree HHuunntteerr’’ss CCooddee ooff EEtthhiiccs
CCooiill DDrriifftt .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .
WWaarrrraanntty
CCooiill DDrriifftt .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..0
AAcccceessssoorriiees
CCooiill DDrriifftt .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
y
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
p
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
s
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
o
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
g
. . . . . . . . . . . . . . . . . . . . .
g
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
t
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
s
. . . . . . . . . . . . . . . . . . . . .
)
. . . . . . . . . . . . . . . . . . .
s
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
y
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
s
BBaacckk PPaagge
66--7
1122--113
113
118
119
220
.
221
.
221
.
3
3
4
4
5
5
5
7
1
8
8
9
0
0
1
3
3
4
6
6
7
7
7
8
8
8
9
9
9
0
1
1
0
e
2
2
TERMINOLOGY
The following terms are used throughout the manual, and are standard
terminology among treasure hunters.
EELLIIMMIINNAATTIIOON
Reference to a metal being "eliminated" means that the detector will not
emit a tone, nor light up an indicator, when a specified object passes
through the searchcoil’s detection field.
DDIISSCCRRIIMMIINNAATTIIOON
When the detector emits different tones for different types of metals, and
when the detector "eliminates" certain metals, we refer to this as the
detector "discriminating" among different types of metals.
Discrimination is an essential feature of professional metal detectors.
Discrimination allows the user to ignore trash and other undesirable
objects.
RREELLIIC
C
A relic is an object of interest by reason of its age or its association with
the past. Many relics are made of iron, but can also be made of bronze
or precious metals.
IIRROON
N
Iron is a common, low-grade metal that is an undesirable target in certain
metal detecting applications. Examples of undesirable iron objects are
old cans, pipes, bolts and nails.
Sometimes, the desired target is made of iron. Property markers, for
instance, contain iron. Valuable relics can also be composed of iron;
cannon balls, old armaments, and parts of old structures and vehicles
can also be composed of iron.
FFEERRRROOUUS
Metals which are made of, or contain, iron.
PPIINNPPOOIINNTTIINNG
Pinpointing is the process of finding the exact location of a buried object.
Long-buried metals can appear to the eye exactly like the surrounding
soil, and can therefore be very hard to isolate from the soil.
PPUULLLL--TTAABBS
Discarded pull-tabs from beverage containers are an especially
bothersome trash item for treasure hunters. They come in many
different shapes and sizes. Pull-tabs can be eliminated from
detection, but some other valuable objects can have a magnetic
signature similar to pull-tabs, and will also be eliminated when
discriminating out pull-tabs.
GGRROOUUNNDD BBAALLAANNCCE
Ground Balancing is the ability of the detector to ignore, or "see through"
the earth’s naturally occurring minerals, and only sound a tone when a
metal object is detected. The Gold Bug incorporates proprietary circuitry
and programming to eliminate false signals from severe ground conditions.
N
N
S
G
S
E
3
3
SETTING UP
Biaxial Searchoil
Wing nut
No tools required.
1
1
Insert the lower stem (plastic tube) into the middle
l
stem.
2
2
Position the lower stem with the silver
l
button toward the back.
Using the bolt and wing nut,
attach the search coil to the
lower stem.
Press the button on
3
3
l
the upper stem,
and slide the
lower stem
assembly into the
upper stem.
Adjust the stem to
a length that lets you maintain a comfortable upright posture, with
your arm relaxed at your side, and the search coil parallel to the
ground in front of you.
Wind the cable securely around the stem.
4
4
l
5
5
Insert the plug into the matching connector on the right underside of
l
the detector body. Be sure that the key-way and pins line up correctly.
6
6
After the stem length is adjusted to your height, tighten the two
l
locking collars to stabilize the stems.
UUssee mmiinniimmaall ffiinnggeerr pprreessssuurree tto
ssttaarrtt tthhrreeaadd.. DDoo nnoott ffoorrcce
tthhrreeaaddss.
NNuutt mmaayy nnoott ccoommpplleetteellyy ccoovveerr aalll
tthhrreeaaddss wwhheenn ffuullllyy eennggaaggeedd.
.
o
e
l
.
Arm Rest Adjustment
If you wish to change the position
of the arm rest, remove the screw
and move the arm rest to one of
the alternate hole locations.
4
4
BATTERIES
TTwwoo 99--VVoolltt bbaatttteerriieess aarre
ssuupppplliieedd wwiitthh tthhee FF22.
The batteries have been
inserted backwards in the
compartment for storage
during transportation.
Please remove batteries,
turn them around, and install
correctly.
AALLKKAALLIINNE
Use
only.
DDoo nnoott mmiixx oolldd aanndd nneew
bbaatttteerriieess.
.
E
batteries
e
.
w
To install the batteries:
1
1
Remove the battery cover
l
by disengaging the clip at the
back.
DDoo nnoott hhiinnggee ddoooorr uuppwwaarrd
straight back
Align the polarity of the batteries correctly, with the positive "+"
2
2
l
toward the coil plug connection, as indicated by the + indicator
on the housing.
3
3
Insert (2) 9-Volt
l
and press down on the back of the batteries to snap them into place.
Some brands of batteries will require moderate force to clear the
retaining tabs.
4
4
Replace the battery door.
l
Most metal detector problems are due to improperly installed
batteries, or the use of non-alkaline or discharged batteries.
ddeetteeccttoorr ddooeess nnoott ttuurrnn oonn,, pplleeaassee cchheecckk tthhee bbaatttteerriieess..
AALLKKAALLIINNE
; pull
d
E
batteries, with the contacts pointed inward,
IIff tthhe
e
USING HEADPHONES
Using headphones (not included) improves
battery life, and prevents the sounds from
annoying bystanders.
It also allows you to hear subtle changes in the
sound more clearly, particularly if searching in a
noisy location. For safety reasons, do not use
headphones near traffic or where other
dangers are present. This device is to be used
with interconnecting cables/headphone
cables shorter than three meters.
5
5
QUICK-START DEMONSTRATION
II.. SSuupppplliieess NNeeeeddeed
• A Nail • A Quarter
A Pull-Tab from a beverage can • A Zinc Penny (dated after 1982)
•
•
• A Nickel
IIII.. PPoossiittiioonn tthhee DDeetteeccttoor
a. Place the detector on a
table, with the search
coil hanging over the
edge. (or better, have a
friend hold the detector,
with the coil off the
ground).
b. Keep the searchcoil
away from walls, floors,
and metal objects.
c. Remove watches, rings and other jewelry or metal objects from
hands and wrists.
d. Turn off appliances or lights that cause electromagnetic
interference.
e. Pivot the search coil back
toward the detector body.
IIIIII.. PPoowweerr UUp
IIVV.. WWaavvee eeaacchh OObbjjeecctt oovveerr tthhee
SSeeaarrcchh CCooiil
a.Notice a different tone for
b.Motion is required. Objects
p
Press the ON/OFF touch pad.
each object.
LLooww TToonnee:
LLooww MMiidd TToonnee:
MMeeddiiuumm TToonnee:
HHiigghh TToonnee:
must be in motion over the
search coil to be detected.
d
r
l
Nail
:
Pull-Tab
:
Zinc Penny
:
Quarter
:
VV.. PPrreessss tthhee DDIISSCC ttoouucchh ppaad
The detector will beep and
2 “R”’s will appear under
the iron indicators.
6
6
d
QUICK-START DEMONSTRATION
(continued)
VVII..WWaavvee tthhee NNaaiill oovveerr tthhee SSeeaarrcchh CCooiil
a. The Nail will not be detected.
b. The Nail has been "Discriminated Out."
VVIIII.. PPrreessss tthhe
““DDIISSCCRRIIMMIINNAATTIIOONN
ttoouucchh ppaadd 33 ttiimmeess.
Five “R”s are now
displayed.
VVIIIIII.. WWaavvee aallll oobbjjeeccttss oovveerr tthhe
SSeeaarrcchh CCooiil
The Nail and Pull-Tab will
not be detected.
The other objects will be
detected with their own distinctive tones.
IIXX.. PPrreessss tthhee NNOOTTCCHH ttoouucchh ppaadd.
A flashing “▲” will
appear under the IRON-1
segment.
XX.. PPrreessss tthhee DDIISSCCRRIIMMIINNAATTIIOON
+
+
The flashing “▲” will move
to the 5¢ segment.
e
++”
.
l
ttoouucchh ppaadd 33 ttiimmeess.
”
e
.
N
.
l
XXII..PPrreessss tthhee NNOOTTCCHH ttoouucch
ppaadd aaggaaiin
The “R” will disappear under
5¢ segment.
XXIIII..WWaavvee tthhee nniicckkeell oovveerr tthhe
sseeaarrcchh ccooiill..
The nickel is detected.
XXIIIIII..WWaavvee tthhee ppeennnnyy oovveerr tthhee sseeaarrcchhccooiill..
XXIIVV..PPrreessss tthhee NNOOTTCCHHttoouucchh ppaadd ttwwiiccee.
The arrow under the 1¢ segment will flash & then the “R” will illuminate.
XXVV.. WWaavvee tthhee ppeennnnyy oovveerr tthhee sseeaarrcchh ccooiill aaggaaiinn.
The penny (the most recently detected item) is eliminated from
detection.
XXVVII.. PPrreessss tthhee PPIINNPPOOIINNTT ttoouucchh ppaadd.
Hold one of the metal objects motionless over the search coil.
• All Metal objects are now detected.
•
One monotone sound indicates the presence of any type of metal.
•
A 2-digit numerical display indicates approximate target depth, in inches.
n
h
e
.
.
.
7
7
Sweep back end
of searchcoil over
suspected bottle cap.
(Low Tone = Bottle Cap)
CONTROL PANEL
TThhee ooppeerraattiinngg ccoonnttrroollss aarree aass ffoolllloowwss:
:
SENSITIVITY + AND –
These controls change the detector’s sensitivity;
higher settings enable detection of deeper
targets. At power-up, the detector is pre-set to
75% of maximum sensitivity. At minimum, the
sensitivity is 35% of maximum. With each press of
the + or – touch pads, the sensitivity level is
displayed on the bar graph on the left of the
display. Upon reaching the minimum or maximum
sensitivity setting, the detector will beep twice.
While higher levels of sensitivity enable detection of deeper targets,
operation at high levels of sensitivity make the detector
ttoo eelleeccttrroommaaggnneettiicc iinntteerrffeerreennccee..
to false signals in difficult ground conditions. Use lower sensitivity settings
to suppress interference or false signals from soil minerals when necessary.
IIff tthhee ddeetteeccttoorr ““CChhaatttteerrss””,, rreedduuccee sseennssiittiivviittyy.
Higher sensitivity settings can also lead
.
mmoorree ssuusscceeppttiibblle
AUTO TUNE (All Metal)
PPrreessss tthhiiss ppaadd aanndd ““AALLLL MMEETTAALL”” aappppeeaarrss oonn tthhee ddiissppllaay
This mode is a ground-balanced all-metals
motion search mode. This mode offers the
maximum amount of sensitivity under most
ground conditions. The search coil must be in
motion to detect metal. One monotone sound
is emitted. No discrimination or target
identification is possible in this mode.
y
e
Use the
background hum. Maximum sensitivity to buried metal objects is
achieved with a slightly audible background hum.
TToo aacchhiieevvee aann aauuddiibbllee bbaacckkggrroouunndd hhuumm:
11..
22..
33..
The Sensitivity control works like a course adjustment in this mode.
The Threshold control works like a fine adjustment in this mode.
The AUTO TUNE mode must be ground-balanced to eliminate interfering
signals from soil minerals. See the section on ground balancing for a
description of this procedure.
8
8
SSeennssiittiivviitty
Press AUTO TUNE pad to enter this mode.
SSeennssiittiivviittyy+
Press
This sensitivity setting may be the highest “quiet” setting, or you may
hear a faint background hum.
TThhrreesshhoolldd++oor
Press
y
TThhrreesshhoolldd
or
+
or
pads until you reach a desired setting.
-
-
r
pad until you reach a comfortable volume level.
-
-
controls to change the sensitivity or
:
Loading...