Whites DXF User manual

1
DXF®Table of Contents
Assembly.......................................................................................................................................................................................... 2
Batteries........................................................................................................................................................................................... 4
DXF™Quick Start .......................................................................................................................................................................... 8
Basic Adjustments ........................................................................................................................................................................ 14
1. Target Volume............................................................................................................................................................. 18
2. Audio Threshold ......................................................................................................................................................... 18
3. Tone (Audio Frequency) ............................................................................................................................................ 19
4. Audio Disc. ................................................................................................................................................................. 19
5. Silent Search............................................................................................................................................................... 20
6. Mixed Mode ............................................................................................................................................................... 21
7. A.C. Sensitivity .......................................................................................................................................................... 22
8. D.C. Sensitivity .......................................................................................................................................................... 22
9. Backlight .................................................................................................................................................................... 23
10. Viewing Angle............................................................................................................................................................ 24
Pro Options ................................................................................................................................................................................... 25
Audio ......................................................................................................................................................................................... 27
1. Ratchet Pinpointing .................................................................................................................................................... 27
2. S.A.T. Speed............................................................................................................................................................... 28
3. Tone I.D. ..................................................................................................................................................................... 29
4. V.C.O. ......................................................................................................................................................................... 29
5. Modulation ................................................................................................................................................................. 30
G.E.B./Trac ............................................................................................................................................................................... 30
6. AutoTrac®.......................................................................................................................................................................................................................................................................................... 31
7. Trac View ................................................................................................................................................................... 31
8. Trac Speed .................................................................................................................................................................. 32
9. Trac Offset.................................................................................................................................................................. 33
10. Trac Inhibit ................................................................................................................................................................. 33
11. Coarse G.E.B. ............................................................................................................................................................. 34
12. Fine G.E.B.................................................................................................................................................................. 35
Discrimination .......................................................................................................................................................................... 36
13. Disc. Edit.................................................................................................................................................................... 36
14. Block Edit .................................................................................................................................................................. 38
15-16. Learn Accept/Reject.............................................................................................................................................. 39
17. Recovery Speed.......................................................................................................................................................... 40
18. Bottlecap Reject ......................................................................................................................................................... 41
19. Hot Rock Reject ......................................................................................................................................................... 42
20. Sweep Speed .............................................................................................................................................................. 43
21. Ground Filtering......................................................................................................................................................... 44
Display....................................................................................................................................................................................... 45
22. Visual Disc. ................................................................................................................................................................ 45
23. Icons ........................................................................................................................................................................... 45
24. V.D.I. Sensitivity ........................................................................................................................................................ 46
25. D.C. Phase.................................................................................................................................................................. 47
26. Accumulate................................................................................................................................................................. 48
27. Average....................................................................................................................................................................... 48
28. Fade ............................................................................................................................................................................ 49
Preamp Gain............................................................................................................................................................................. 50
29. Preamp Gain............................................................................................................................................................... 50
Multi Frequency Method......................................................................................................................................................... 51
30. 2 Frequency (Best Data) ............................................................................................................................................ 51
31. 2 Frequency (Correlate) ............................................................................................................................................. 51
32. V.D.I. Normalization .................................................................................................................................................. 52
33. 1 Frequency (3 kHz) .................................................................................................................................................. 52
34. 1 Frequency (15 kHz) ................................................................................................................................................ 52
EEPROM Programs................................................................................................................................................................53-54
Program Settings Chart ..........................................................................................................................................................55-56
Glossary ......................................................................................................................................................................................... 57
Warranty ..................................................................................................................................................................................58-59
Warranty ..................................................................................................................................................................................58-59
Service .......................................................................................................................................................................................... 60
Contents Page

2
Assembly
Chapter 1 DFX™Assembly
ELBOW
CUP
STRAP ELBOW CUP
FOAM PADS
INSIDE ELBOW
CUP
CONTROL BOX
“S” ROD
LOOP
CABLE
CAMLOCKS
WASHERS
BETWEEN
EACH LOOP
EAR & CLEVIS
DISPLAY
1/ PRESET PROGRAMS
2/ BASIC ADJUSTMENTS
3/ PRO OPTIONS
4/ TARGET ID NUMBERS
5/ TARGET ID ICONS
6/ TARGET ID SIGNAGRAPH®
7/ BATTERY STRENGTH
CABLE RETAINERS
BATTERY
COMPARTMENT
DOOR
BATTERY
COMPARTMENT
LATCHES
LOOP CONNECTOR
HEADPHONE
JACK
CLEVIS
LOWER
ROD
TOUCH PADS
SELECT PROGRAMS
ADJUST CONTROLS
LOOP OR SEARCH
COIL
Trigger behind display activates
depth reading and
pinpoint mode.
COIN PROGRAM
SQUEEZE & RELEASE TRIGGER
AFTER BATT. CHECK.
SCROLL OPTIONS
ATER BATT. CHECK USE
TO SCROLL CURRENT SETTINGS
OR MAKE ADJUSTMENTS
GROUND BALANCE ONLY
WHILE SEARCHING HOLD THE
TRIGGER AND PRESS
BATTERY CHECK
WHILE SEARCHING, HOLD THE
TRIGGER AND PRESS
REVERSE DISPLAY
WHILE SEARCHING. HOLD
THE TRIGGER AND PRESS
PRESS FOR
LIGHT/DARK BACKGROUND.
RELEASE TRIGGER
BACKLIGHT
IN SEARCH MODE, HOLD THE
TRIGGER AND PRESS
RELEASE TRIGGER
PUSH
AIR/GND BALANCE
IN SEARCH MODE PRESS
TO RE-AIR/GND BALANCE
VIEW ANGLE
WHILE SEARCHING HOLD
THE TRIGGER AND PRESS
RELEASE TRIGGER
PUSH
"HOT KEY" SHORTCUTS
"X" "X"
Remove decal paper from the two rubber
bumpers. Install on the bottom of the control
box, one in each of the front corners (shown
below by "X"). Press in place and hold firmly
for a few seconds then release.
BOTTOM OF
CONTROL BOX
Twist and insert each end of
handle (provided) through top
of shipping carton into
second flap.
(CARRY CARTON)

3
Chapter 1 DFX™Assembly
readjust clevis/lower rod length with the spring
clip buttons so that the search coil can be held near
the floor without requiring stooping over.
7. Remove the protective paper from the two black
elbow cup foam pads. Carefully align pads on the
inside of the elbow cup, one on each side of the
center rod, and press firmly into place.
8. Adjust the elbow cup strap so that it is loose
enough for you to slide your arm in and out with-
out loosening each time you want to set the detec-
tor down. The elbow cup strap provides extra
leverage and control. However, some prefer not to
use it.
9. Install battery as described in the next section,
decal facing down, with plastic tab and steel contacts
facing toward inside of battery compartment.
10. It should be noted at this point that the detector
may not work as expected indoors due to the high
degree of metals used in modern construction. It is
best to tune and practice out-of-doors to ensure
stable, predictable results. Additionally, freshly-
buried targets will not produce the normal depth
and discrimination results of targets that have been
naturally lost and settled in the ground. Due to the
abnormality caused by digging a hole in the ground
matrix, and the sophistication of the ground rejec-
tion circuitry, it may take a number of years for
freshly-buried targets to respond at true depths and
discrimination accuracy. The best way to deter-
mine true detection depth is in real search condi-
tions.
Assembly Instructions
1. Remove all parts from shipping carton and
check the assembly page to make sure all parts are
present.
2. There are rubber washers between clevis/lower
rod and loop ears. Use only nonmetallic washers,
fiber bolt, and thumbnut to secure loop/search
coil to clevis/lower rod.
3. Unlock "S" rod camlock and insert clevis/
lower rod into curved "S" rod so that stainless
steel spring clip buttons line up and lock into one
of the adjustment holes in the curved "S" rod.
Turn camlock to secure. The second or third
adjustment holes are suitable for average size
adults. Individuals 6' or taller should use the fully
extended position. Individuals well over 6' tall
should purchase the optional Tall Man Rod.
4. Unravel loop cable and wind the cable around
the clevis and rod assembly, first revolution over
the top of the rod. Wind cable all the way to the
top of the curved "S" rod, about five revolutions.
Use the black cable retainers, one near the loop,
and one near the top of the curved "S" rod, to hold
the loop cable in place.
5. Unlock control box rod camlock and insert
curved "S" rod so that stainless steel spring clip
buttons line up and lock into the rod on top of the
control box. The "S" rod is designed to curve up
toward the display. However, those who prefer to
sweep the loop close to their feet may desire to
assemble the "S" rod to curve down toward the
ground. Turn camlock to secure. Plug loop con-
nector into control box, screw lock ring to secure.
6. Grip the instrument by the handle, with your arm in
the elbow cup with strap secure, and sweep the loop/
search coil over the floor. If the instrument fit feels
uncomfortable, adjust the elbow cup by removing
and repositioning the bolt/thumbnut and installing
in one of the optional positions. If necessary,

4
Batteries
Chapter 2 DFX™Batteries
CAUTION
Battery Holder #802-7150
LIFT TAB AND PULL
Standard Battery Holder
1. The standard battery holder (blue decal) holds
eight “AA” cell batteries. Alkalines are recom-
mended for use with this battery holder.
2. Non-alkaline batteries can be used in this holder.
When non-alkalines or rechargeable “AA”
cells are used, detecting time (before replacement/
recharge) may be reduced.
3. "LOW BAT" will automatically appear on the
display when the batteries become too low to
properly operate the detector.
4. The battery compartment opens by gently
pulling down on the front of each of the two
latches (on the bottom of the control box) releasing
the catch and hinging open the door.
The non-rechargeable battery holder can use many
different types of batteries, including rechargeable.
This holder is designed for standard size penlight
"AA" batteries which should be 50 mm ±.10mm.
Battery lengths shorter than this will likely cause
problems with this power supply.
When the instrument is turned on the battery volt-
age will momentarily appear after the opening
display. The detector will then continue to the
MAIN MENU. To recheck the battery voltage
during operation, squeeze and hold the TRIGGER
and press the ARROW DOWN control.
BATTERY CHECK
VOLTS
NICAD ALK
6 LOW OK 14.0
ARROW DOWN
TRIGGER
UNDER
DISPLAY POD
BLUE DECAL

5
Chapter 2 DFX™Batteries
Rechargeable Battery
A rechargeable battery (green decal) is provided
with your instrument. This battery can be recharged
hundreds of times as long as the battery hasn't been
stored for extended periods of time or overcharged.
Full charge can be achieved anytime during the
discharge cycle. When using the QUICK charge
setting use the Charging Hours chart on the follow-
ing page for charge time. A full charge will last ten
to fifteen hours of normal use.
Battery life will vary with temperature, the number
of targets found, and the exact settings used. Six
hours is not unusual for extreme high performance
settings, backlight use, or for batteries that have
experienced extensive use.
Your charger has a switch on it that selects the
QUICK charge, or OVERNIGHT charge options.
Always check the position of this switch prior to
charging. Always follow the charge hours on the
chart on the following page when the QUICK
charge setting is used. Overcharging with the
QUICK charge setting will damage the system.
CAUTION
Battery #802-5211
Using the
Standard Battery Holder
1. Slide open the battery holder lid (decal side of
battery holder) by applying gentle upward
pressure on the tab of the door so that it unlocks.
Slide the door away from the battery box
exposing the cell positions.
2. Remove any old cells from the holder. Note the
(+) and (-) positions of each cell and the (+)
and (-) for each position marked inside the cell tray.
Install new “AA” cells noting carefully the cor-
rect (+) and (-) positions.
If the cells are installed incorrectly, the detector
may require service by an Authorized
Service Center.
3. Slide the door closed so that it snaps securely.
4. Insert the battery holder into the detector so that
the decal is facing down, with the battery
holder door tab and metal contact points facing
toward the inside of the battery compartment.
Close the battery compartment door and secure the
two latches on the bottom of the case. Hook the
front of each latch first, then press down on the
rear.
QUICK
CHARGE
OR OVER-
NIGHT
SWITCH
GREEN
DECAL BATTERY
CHARGER
BATTERY
COMPARTMENT DOOR
BATTERY HOLDER
WITH DECAL SIDE DOWN AND
METAL CONTACTS TO FRONT
CHARGER PLUG

6
Chapter 2 DFX™Batteries
6. The battery will lose its charge during storage.
If stored inserted in your instrument, this loss will
be more noteworthy. It is recommended that the
battery be removed from the instrument during
periods of storage. It is not advisable to store
rechargeable batteries for long periods of time
without use. If however, storage is necessary, store
without a charge (discharged).
7. Do not discharge the battery in devices other
than your metal detector. Unnecessary discharging
and/or an absolute discharge will reduce battery life
and may damage the battery. Unlike older recharge-
able battery designs, the rechargeable battery
provided with your detector can be recharged at any
time. Regardless of whether or not it already has a
partial charge, memory will not occur.
8. White's has provided the leading edge of re-
chargeable battery technology with your instru-
ment. Disregard all advice which conflicts with the
above recommendations. Care for batteries pro-
vided by other manufacturers, or with other White's
models, may vary.
Charging
1. There is no harm charg-
ing overnight using the
OVERNIGHT charge
setting regardless of the
battery's current condition.
However, before charging
with the QUICK charge
setting, determine battery
condition by inserting
battery into the instrument
and turning the instrument
ON. If the instrument will
not turn ON, or if voltage
tests eight volts or below,
charge five hours with the
QUICK charge. If the battery voltage tests any other
voltage, refer to the Charging Hours chart above for
proper QUICK charge time.
2. To charge, insert the charger plug into the battery
pack jack, located near the plastic tab and
metal contact points.
3. Plug the charger into a standard wall outlet.
(110 volts for USA models).
4. Again, the QUICK charge setting uses the above
chart for a specific charge time. OVERNIGHT is
designed to charge the battery in as little as fourteen
hours. However, no harm will come to the system
leaving it charging for several days.
5. It is normal for the battery and charger to get
warm during use. However, if either the battery or
the charger gets too hot to hold or deforms due to
the heat, discontinue use and return for testing.
13 12 11.5 11 10.5 10 9.5 9 8.5 8 7.5 7 6.5 6
5
4.5
4
3
2.5
2
1.5
1
0.5
0
3.5
Any voltage reading
less than 8 volts-
charge for 5 hours
maximum on
Quick Charge
setting. Further
charging can
damage the
system.
Do not charge until
voltage reading drops
below 10.5 volts.
Charging
Hours
Using the Battery Charger on Quick Charge Setting
Battery Voltage Reading

7
Chapter 2 DFX™ Batteries
Battery Life & Memory
Volatile memory temporarily holds any program
changes or settings not yet saved in a Custom
Program. Short-term or volatile memory is retained
so long as a good battery remains in the detector.
To recover volatile memory immediately squeeze
and release the TRIGGER once the detector is
turned ON. If the battery is removed all volatile
memory is lost. Long-term memory (programs
saved in Custom Programs) is automatically saved
for up to ten years regardless of whether a battery is
in the detector or not.
When using fresh batteries, the voltage will initially
check somewhere in the 10 to 14 volt area. Unlike
standard batteries, the rechargeable battery voltage
will quickly drop to between 9 and 10 volts and
plateau there for most of its life. Once the recharge-
able battery voltage drops below this plateau, it will
quickly drop below a usable voltage level (eight
volts) and thus require a recharge. Low Battery will
automatically appear on the display when the
battery reaches eight volts.
Like a personal computer, there are times (such as
low battery conditions) when the microprocessor of
a metal detector becomes out of sequence with the
rest of the circuitry. This is often noted by pecu-
liarities in the nondiscrimination or pinpointing
(TRIGGER squeezed) modes. Symptoms may be
blaring or silent non-discriminate or pinpoint
modes, depth indication inaccuracies or general
abnormal operation. To correct such difficulties "re-
boot" by:
1. Install a good battery.
2. Turn ON wait for MAIN MENU to appear.
3. Open battery door and remove battery while
detector is still ON.
4. Wait one minute, reinstall battery, turn
detector ON, and check for proper function.
Use of maximum backlight may reduce battery life
by up to 50%, depending on battery type.
Rechargeable batteries gradually deteriorate. As
they age they do not provide the life-per-charge
they did when new. This is expected, and not
grounds for replacement under warranty. Addition-
ally, a damaged initial cell, which is caused by
overcharging with the QUICK option, is not re-
placed under warranty. Only cell failure through
normal use, or a defect due to a problem with a
White's warranted DFX™charger, is covered.

8
Chapter 3 DFX™Quick Start
DFX™ Quick Start Instructions
After you have assembled the DFX™and inserted the
battery pack, follow these simple steps to start
treasure hunting!
DFX™Quick Start
1With the TRIGGER in the center position,
press the ON/OFF control and an automatic
sequence will begin.
The display will momentarily show an
opening screen which lists the software
version.
The display then shows a battery check
screen.
The last automatic display screen to appear
is the MAIN MENU. Press the ENTER
control. ("BEEP")
The Preset Program COINS will appear on
the MENU. Press ENTER . ("BEEP")
You will be prompted to raise the search
coil (loop) to waist level. Press ENTER .
This air balances the DFX™.("BEEP")
Next, the ground balance prompt appears
asking you to lower the search coil (loop) to
the ground. Press ENTER. Ground mineral-
ization will be balanced out. ("BEEP")
The last screen will be the live search
screen. You will hear the THRESHOLD
"hum". Sweep the search coil over the
ground and listen for a solid repeatable/
consistent beep, then look at the display.
The icons tell what likely coin lies below.
V.D.I. number/chart on top of control box
and SignaGraph® provide greater detail.
Squeeze the trigger for pinpointing and
depth and it's time to dig!
2
3
4
TRIGGER
UNDER
DISPLAY POD
CENTER
POSITION
SOFTWARE
VERSION #
BATTERY CHECK
VOLTS
NICAD ALK
6 LOW OK 14.0
MAIN MENU PG. 1/1
PRESET PROGRAMS
BASIC ADJUSTMENTS
PRO OPTIONS
12
3
4
PROGRAMS PG. 1/3
COINS
COIN & JEWELRY
JEWELRY/BEACH
(press ENTER)
(press ENTER)
5
5
RAISE LOOP TO WAIST
LEVEL THEN PRESS
ENTER
LOWER LOOP TO GROUND
SURFACE THEN PRESS
ENTER
6
(press ENTER)
67
78
+84
25
¢
-95 +95
(press ENTER)
8
(LIVE SEARCH SCREEN)

9
Chapter 3 DFX™Quick
Start
Search Fundamentals
The loop/search coil must be in motion (sweep-
ing from side-to-side) for this instrument to
respond to metal. Practice a smooth sweep of the
loop from side-to-side keeping the loop close to the
ground throughout the swing. Each pass of the
loop should take approximately two seconds
from right to left, two seconds to return from left
to right.
Walk forward slowly. Take small steps no greater
than half normal strides. Make sure each pass of the
loop overlaps the last by at least half the length of
the loop. Do not lift the loop at the end of each
swing. Keep it close to the ground at all times.
To become comfortable with sweeping the loop
takes some practice. Try to loosen up and find a
comfortable grip on the handle. Premature fatigue
may result from gripping the handle too tightly,
improperly adjusted rod or elbow support, and
limited body movement. Hold the handle loosely.
Adjust the rod and elbow support for comfort and
keep the elbow strap loose. Use your arm, shoulder
and even your back a little to allow a smooth even
sweep of the loop.
Now that you're sweeping the loop smoothly over the
ground, you will notice that the detector starts making
sounds (beeps). Not all sounds are good targets;
some trash targets also make the detector beep.
As the loop is swept over the ground, ignore the
display and concentrate on the sounds the detector
makes.
As the loop is passed over metal that is likely trash,
the sound will be inconsistent. Trash targets typi-
cally produce a shorter, sputter-type sound, that is
often broken or double in nature. Place a steel-pop
bottlecap on the ground. Pass the loop over it
several times to become familiar with this sound at
different loop sweep speeds. Note that an aluminum
twist-off bottlecap cannot be used as it is a differ-
ent type of target. Also note that very old rusty
bottle caps may start reading as quarters due to the
elimination of the iron alloy through deterioration.
Once familiar with the sound typical bottle caps
produce, an operator may pass over such targets and
continue searching without consulting the display
information, saving more time for evaluating
possible good targets.
As the loop passes over metal that is likely a good
target, a more consistent and smooth sound will be
heard. A good target typically produces a longer,
more solid sound. Place a quarter on the ground and
sweep the loop over it several times to become
familiar with the sound of a good target.
Why Air/Ground Balance?
When the display prompts you to AIR BALANCE by
holding the loop at waist level and press ENTER. The
DFX™'s circuits are being prepared for ground balanc-
ing by measuring temperature and other variables that
affect electronic circuits. The DFX™"beeps" and you
lower the search coil to the distance above the ground
that you will be searching. Press ENTER to have the
DFX™"cancel/track out" or GROUND BALANCE
the ground mineralization. The DFX™then automati-
cally "tracks out" the varying mineralization as you
continue to search.

10
Chapter 3 DFX™Quick Start
Live Search Screen - what is it telling me?
VISUAL
DISCRIMINATION
INDICATION-V.D.I. NUMBER
("TARGET REFERENCE NUMBER")
POSSIBLE TARGET IDENTITIES
("ICONS")
SIGNAGRAPH
BARGRAPH
1. V.D.I. Visual Discrimination Indication
("target reference number")
In the upper left hand-side of the display there is a
V.D.I. number that corresponds to the V.D.I.
SCALE painted on the top right-hand side of the
control box. It also corresponds to the Discriminate
Edit feature allowing you to reject or accept targets
based on their V.D.I. reference number. There are
"+" numbers for nonferrous (not of iron) targets,
and "-" numbers for ferrous (iron) targets. Rejected
V.D.I. numbers may not appear if the VISUAL
DISCRIMINATION feature is ON. Reasonably
consistent V.D.I. reference numbers (±five digits),
in a desirable area of the chart is a vote for digging
the target.
2. Possible Target Identities ("Probable or most
likely target")
To the right of the V.D.I. number, possible target
identities will be represented graphically. These
graphics are called ICONS. A fairly consistent
indication of a desirable target is another vote to dig
the target. One or two possible target icons may
appear. There is significance to which icon appears
first. The first target to appear is always the most
likely, the second is another possibility, slightly less
likely than the first.
3. SignaGraph®
The SignaGraph®at the bottom of the display
provides a final vote as to whether or not the target
should be dug.
+48
-95 +95
A. Sweep the loop over the target several times and
look at the SignaGraph®. The SignaGraph® auto-
matically clears itself (FADE RATE) so that it
doesn't fill the screen with information from past
loop sweeps. An operator has limited time to look
at the SignaGraph®. If you want to look at the
information again, sweep the loop over the target
several more times. The fading of the SignaGraph®
information can be slowed or speeded (FADE
RATE) to operator preference. This is completed in
the PRO OPTIONS under DISPLAY. Automatic
AVERAGING and/or ACCUMULATING of
SignaGraph®information is also available (See
PRO OPTIONS).
B. Valuable targets will show up on the positive
side of the graph. The positive area of the chart is
the section located to the right of the zero.
C. Look for consistency. In ideal conditions, coins
and jewelry produce one or two bars to the right of
zero. Trash produces several bars, sometimes on
both sides of zero.
D. In less than ideal conditions, coins may produce
a wider pattern of bars. Most trash targets produce a
recognizably different pattern than valuable targets.
E. One of the most visual benefits of the
SignaGraph®is the ability to show a smear pattern
on iron targets that often fool the other methods of
identification. An iron target will likely show
definite bars on both the negative and positive sides
of the SignaGraph®, often smearing all the way
across the entire chart. Valuable targets should not
produce such obviously wide patterns. In very bad
ground conditions, a good target may have a few
small bar segments in the negative area due to
mineralization. However, the pattern will show
mostly positive bars, in a fairly narrow tall group.
MULTIFREQUENCY
METHOD
CURRENTLY IN
USE

11
Chapter 3 DFX™Quick Start
Live Search Screen Samples
+19
5
¢
-95 +95
+78
1
10
¢¢
-95 +95
+84 25
¢
-95 +95
+93
1
$
-95 +95
-95 +95 -95 +95
+95
-18
-95 +95
+10
-95 +95
FOIL
+30
-95 +95
+48
-95 +95
Nickel, or
possible ring.
Sometimes a
small (or half)
pull tab will
produce this
indication
Quarter. Could
be a worn half,
or large silver
jewelry.
Penny or a
dime. If the
screw cap and
penny ICON
are displayed,
the target
could be an
Indian Head or
zinc penny.
Dollar. Large
non-iron can
also produce
this indication
(large brass jar
lids).
IRON. REJECT
targets will
produce only a
SignaGraph®if
VISUAL DISC.
is ON
IRON. +95
ACCEPTED or
VISUAL DISC.
OFF
IRON. -18
ACCEPTED or
VISUAL DISC.
OFF.
Foil. Possible
ring. +10
ACCEPTED or
VISUAL DISC.
OFF.
Pull tab.
Possible ring.
+30 AC-
CEPTED or
VISUAL DISC.
OFF.
Ring. Possible
pull tab. +48
ACCEPTED or
VISUAL DISC.
OFF.

12
Chapter 3 DFX™Quick
Start
Pinpointing the Target
Once the decision has been made to dig, move the
loop off to one side of the target area, squeeze and
hold the TRIGGER on the handle, and "X" the loop
over the spot where you believe the target to be.
Note that the TRIGGER also has a locked forward
position that accomplishes the same thing as
squeezing and holding it.
While the TRIGGER is being held, the loop doesn't
need to be moving to detect the target. The loop
may be moved slowly over the area. The display
will indicate depth in inches and will also show the
strongest reading to aid in pinpointing exactly
where to dig. The shallowest reading on the depth
display, the loudest sound coming from the speaker,
and the two bars lining up with each other, indicate
the center of the target. Don't forget to "X" the
target as pinpointing cannot be accurate unless the
target is swept from at least two different directions.
Once pinpointing is complete, release the TRIG-
GER, or return it to the center position.
Pinpointing takes practice. The standard loop
provided with the DFX™ is a high-powered, 9.5
inch design. This harmonically tuned loop's stron-
gest traits are in the detection depth and ground
coverage areas. If pinpointing becomes difficult or
critical refer to the Advanced Pinpointing Tech-
niques on this page.
10.5"
+-12-+-+-9-+-+-6-+-+-3-+-+-0+-12-+-+-9-+-+-6-+-+-3-+-+-0
DEPTH SCREEN
DISPLAYED WHEN
THE TRIGGER
IS SQUEEZED
SQUEEZE TRIGGER
Advanced Pinpointing Techniques
1. Targets that are near the surface, because
they give a wider response, are harder to
pinpoint than deep targets. If the trigger is held
and the loop swept over the area, you may note
a shallow depth indication. Lifting the loop
slightly above the ground, releasing and re-
squeezing the TRIGGER and again "X" ing the
target will aid pinpointing.
2. In the Basic Adjustments, DC Sensitivity
(non-motion) directly controls the pinpointing
mode. Lower DC Sensitivity settings pinpoint
shallow targets better.
3. In the PRO OPTIONS under AUDIO, V.C.O.
(Voltage Controlled Oscillator) significantly aids
pinpointing.
4. The depth reading has two indication bars.
The top bar shows the current distance from
the target, and the bottom bar shows a memory
of the strongest reading. These two bars will be
even with each other when the loop is directly
over the center of the target.
"X" THE LOOP TO "PINPOINT"
THE TARGET

13
Chapter 3 DFX™Quick
Start
Ready to Dig
Permission - Prior to searching and digging you
must have permission to search private property,
from the owner or caretaker.
Laws - Know the laws that apply to the area you
are going to search. Laws vary a great deal with the
City, County, State, and Country, regarding the use
of metal detectors. Be respectful of private prop-
erty, public property, and the laws which govern
the use of metal detectors.
Tools - Care must be taken to dig in a way that is
friendly to the landscape. Tools and methods vary a
great deal with the area, season, and types of target
you are recovering. Check with your dealer for
recommended tools and methods for your area.
Trash - When searching, remove all trash you
come across. This not only makes your future
searches of the area more productive; it promotes
the hobby of metal detecting.
Get Involved - Your dealer knows of metal detect-
ing clubs and organizations which promote and
protect the hobby. A club is a great way to not only
learn good detecting habits, but to gain permission
to search areas as a group as well as have organized
competition hunts.
Factory Preset Programs
Reached from the MAIN MENU, the factory
PRESET PROGRAMS give a quick start for:
Coins: general purpose settings, discriminates
(rejects) most common junk items like nails, foil,
pull tabs, and hot rocks; and responds to most coins
and large jewelry. Use in lawns, parks, and play-
grounds where lots of trash rejection is desired.
Coin & Jewelry: less discrimination (less trash
rejection), desirable because of the high degree of
variance found in jewelry alloys. More digging
required. Good program for lawns, parks, and
playgrounds. Use screen in conjunction with sound.
Jewelry & Beach: similar to Coin & Jewelry, but
settings are optimized for salt water.
Relic: even less discrimination than Coin & Jewelry
or Jewelry & Beach, all types of metals except
small iron items like nails, and some stainless steel.
Brass, lead, aluminum, as well as copper, silver,
and gold all respond solidly. Ferrous (iron), such as
large nails, weapons, and cannon ball fragments
will also respond . Suitable for all significant targets
and separates ferrous/nonferrous by display indica-
tions.
Prospecting: NO AUDIO DISCRIMINATION. All
metals respond with beep. But V.D.I. numbers
show only for metals that could be gold. Dig only
V.D.I. number (possibility gold) targets and avoid
iron. Targets which cause an audio response, with-
out causing a V.D.I. number to appear on the
display, are not likely to be gold nuggets. Although
high-frequency gold-shooting detectors will re-
spond better, this mode will offer good results for
the occasional nugget hunter by responding to
nuggets in the six-grain and heavier category.

14
Chapter 4 DFX™Basic Adjustments
Basic Adjustments
MAIN MENU PG. 1/1
PRESET PROGRAMS
BASIC ADJUSTMENTS
PRO OPTIONS
Basics of Basic Adjustment
After you have had some field experience, you may
want to make some changes to the basic settings of
your detector. From the search mode press
MENU. At this point, the MAIN MENU will
appear on the display. Use the ARROW controls to
move the pointer to Basic Adjustments, and then
press ENTER. You may now use the ARROW
down control to scroll through the Basic Adjust-
ments.
Using the first adjustment screen (TARGET VOL-
UME) as an example, the screens with a graphic
control knob require you to first press ENTER
then use the ARROW up and down controls to
adjust. Note: when ENTER is pressed the square
around the title moves to the setting, indicating you
are ready to make adjustments with the ARROW
controls. After adjusting press MENU and use the
ARROW controls to continue viewing/setting other
Basic Adjustments, or squeeze and release the
TRIGGER to begin searching
Adjustment screens with an on/off selection need
only for you to press ENTER to change setting.
Pressing ENTER again changes back to the original
setting.
56
TARGET VOLUME
MIN MAX
56
TARGET VOLUME
MIN MAX
(press ENTER)
(press ENTER)
RECTANGLE AROUND
THE TITLE MOVES TO
THE SETTING
USE ARROW KEYS TO
ADJUST THE SETTING
UP OR DOWN
ADJUSTMENT
EXAMPLE:
TIP - To quickly increase to
maximum, hold ENTER and
press ARROW up. To quickly
decrease to minimum, hold
the ENTER and press
ARROW down.
SILENT SEARCH
ON
OFF
TO CHANGE PRESS ENTER
ADJUSTMENT
EXAMPLE:
1. TARGET VOLUME - How loud a target beeps when detected.
2. AUDIO THRESHOLD - The slight hum or background sound heard continuously during searching.
3. TONE (AUDIO FREQUENCY) - Selects the frequency or pitch of sound the detector produces.
4. AUDIO DISCRIMINATION - The ability to reject trash, different sounds for different types of targets.
5. SILENT SEARCH - The ability to operate without the threshold or background hum.
6. MIXED-MODE - DC non-discriminate mode, working simultaneously with AC discrimination mode.
7. A.C. SENSITIVITY - Degree instrument is responsive to signals in the discriminate (motion) modes.
8. D.C. SENSITIVITY - Degree instrument is responsive to signals in non-discriminate (non-motion) modes.
9. BACKLIGHT - Used in dark conditions to light the display improving visibility.
10. VIEWING ANGLE - Adjusts the display for low or high temperature visibility.
Basic Adjustments - what do they do?

15
Chapter 4 DFX™Basic Adjustments
More Basics
All the MENU items are tied together so that the
ARROW up and down controls scroll through every
adjustment screen. If you continue to press the
ARROW down you can go beyond the last BASIC
ADJUSTMENT (View Angle) and into the PRO
OPTIONS. If the ARROW up control is pressed
after VOLUME, you will be scrolling backwards
through the options starting with the end of the
Preset Programs, then the MAIN MENU, then the
end of the PRO OPTIONS.
An important feature of the ARROW controls; If a
BASIC ADJUSTMENT has been made (for ex-
ample Volume) and the trigger has been squeezed
and released to return to a search mode, you can
return to the volume adjustment simply by pressing
either of the ARROW controls. This shortcut
returns to the last adjustment that was made thereby
allowing an operator to switch directly from a
search mode to the adjustment currently being fine
tuned. This feature is desirable as you start using
BASIC ADJUSTMENTS or PRO OPTIONS that
are located further down the menu listings, or any
adjustment that may require some trial and error to
find the appropriate setting.
If care is taken to use a desired adjustment screen
last (just prior to squeezing and releasing the TRIG-
GER for a search mode), Custom Programs can use
this ARROW RETURN feature to allow quick easy
access to the most used feature. Use that feature
(adjustment screen) last, just prior to squeezing and
releasing the TRIGGER for searching. Then during
searching, press either ARROW to return directly to
that adjustment screen.
"Hot Key" Shortcuts
"HOT KEYS" will save time as they allow easy
access, from the search mode, to the most needed
adjustments. They are painted on the bottom of the
control box for field reference. NOTICE: "HOT
KEY" shortcuts will not function from a cold start
(batteries just installed). To function from a cold
start the DFX™must be turned on and air/ground
balanced in any mode, then turned off. "HOT KEY"
shortcuts will then function.
COIN PROGRAM - Squeeze & release TRIGGER
after automatic battery check.
SCROLL OPTION - After battery check, use
ARROWS to scroll all the current settings /menus.
AIR/GROUND BALANCE - In search mode,
press ENTER to re-Air/Ground Balance.
GROUND BALANCE ONLY - While searching,
hold the TRIGGER and press ENTER.
BATTERY CHECK - While searching, hold the
TRIGGER and press ARROW down. Squeeze and
release TRIGGER to return to searching.
REVERSE DISPLAY - While searching, hold the
TRIGGER and press ARROW DOWN. Press
ARROWs for light/dark background. Light or dark
background will not change battery life. It will
make the display easier for some to read, particu-
larly in certain light conditions. It will work in
combination with backlight. Reversed display is
only accessible through the "HOT KEYS".
BACKLIGHT - In search mode, hold TRIGGER
and press MENU. Release TRIGGER, press
ARROWS to set.
VIEW ANGLE - While searching, hold the TRIG-
GER and press ARROW up. Release TRIGGER,
press ARROWS to set.

16
A. LOAD will activate a prior custom pro-
gram stored in that position. After you have
SAVED or NAMED a program, you can
select LOAD and press ENTER, to use that
program.
B. SAVE saves your current settings in that
custom position with either a generic name or
a prior custom name you may have applied.
Selecting SAVE and pressing ENTER saves
the current program.
C. NAME is the preferred method. Select
NAME and press ENTER. You may now use
the ARROW and ENTER controls to name
your custom program. NAME automatically
SAVES, once you have chosen a name and
pressed MENU.
Custom EEPROM Programs
Saving Basic and Pro Option
adjustments for future use.
Save custom settings in any one of four EEPROM
program positions. They will remain permanently in
the DFX™memory regardless if the machine is
turned off or the battery removed. Custom
EEPROM Programs can be changed at any time by
saving new settings over a previously saved custom
program. EEPROM is a special type of computer
memory made for this purpose, (Electrical-Eras-
able-Programmable-Read-Only-Memory).
Chapter 4 DFX™Basic Adjustments
1SQUEEZE
TRIGGER
2
PROGRAMS PG. 1/3
COINS
COIN & JEWELRY
JEWELRY/BEACH
PRESS ENTER FOR PRESET PROGRAMS
MAIN MENU PG. 1/1
PRESET PROGRAMS
BASIC ADJUSTMENTS
PRO OPTIONS
PROGRAMS PG. 2/3
RELIC
PROSPECTING
EEPROM DP-SILVER
SCROLL DOWN WITH ARROW KEYS
3
THEN PUSH
MENU
EEPROM OPTIONS PG. 1/1
LOAD
SAVE
NAME
1. Once all of the changes you desire have been
made to any Preset Program or existing Custom
Program, squeeze and release the TRIGGER as if to
search.Then push MENU for MAIN MENU.
2. Use the ARROW controls to select one of the
four Custom Programs then press ENTER.
3. You now must make one of three choices (use
the ARROW controls to make your selection):
PROGRAMS PG. 2/3
RELIC
PROSPECTING
TRASHY PARKS
PROGRAMS PG. 2/3
RELIC
PROSPECTING
TRASH
4
PRESS ENTER
USE THEARROW KEYS TO SCROLL THE
FLASHING SYMBOLS, PRESS ENTER
PRESS ENTER
PRESS MENU
1
2
3

17
Chapter 4 DFX™Basic Adjustments
4. To NAME, use the ARROW controls to select the
first symbol, number, or letter of the name and press
ENTER. Use the ARROW controls to select the
second symbol, number, or letter of the name, press
ENTER. And so on using up to sixteen digits. To
leave a space, use the ARROWS to select the point
where no symbol or letter appears and press ENTER.
If you make a mistake and press ENTER when the
digit is not as you desire, simply keep pressing EN-
TER until that digit is again flashing, then use the
ARROWs to select the correct digit and again press
ENTER. It is wise to name the custom program
something that relates to what it is used for. For
example "TRASHY PARKS", "GHOST TOWN",
"NIGHT HUNT", "COMPETITION", etc. Once the
name is fully assembled press MENU.
5. Once you have SAVED and pressed ENTER, or
NAMED and pressed MENU, there are four directions
you can go:
A. Squeeze and release the TRIGGER to con-
tinue searching using your new custom program.
B. Press ENTER, select LOAD and press
ENTER to continue searching using your new
custom program.
C. Press MENU to return to choose or develop a
different program than what you stored.
D. Turn the detector OFF.
6. When the detector is turned back on, regardless of
whether a battery pack was left in the detector or
not, your custom program will be ready for you to use
again and again. Simply select it, press ENTER, select
LOAD, and press ENTER again. Follow the on-
screen instructions for Air/Ground Balance and then
search.
7. If you SAVE or NAME a program, then decide you
no longer want to keep it, you can replace it with a
new program using the same procedure as de-
scribed above. The old program can only be erased
when a new program is stored in that position.
8. You can NAME a custom program and at a later
date replace the program while maintaining the
same name. Develop the changes first to any pro-
gram, then use the SAVE method which maintains
the old name while storing the new program. To
keep the same program with a new name, first
LOAD that custom program, Air/Ground Balance,
then press MENU and go to that custom position
and press ENTER. Now select NAME and press
ENTER. You can now develop a new name for the
old program.
Other Custom EEPROM
Program Info
Ground Balance - When a Custom Program is
stored, the Ground Balance setting last used with
that program is also stored. This has advantages
particularly for those who manually set the Ground
Balance for speciality applications. The automatic
Air/Ground Balance sequence will always override
manual settings. To access the last Ground Balance
setting used with a Custom Program, first select the
desired Custom Program then press ENTER. Select
LOAD and press ENTER. Do not Air/Ground
Balance as the display suggests, simply squeeze and
release the TRIGGER. The last Ground Balance
setting will then be in use. If an appropriate Air/
Ground setting is not available, the instrument will
automatically require a new Air/Ground Balance.
Return ARROW Key - The last Basic Adjustment
or Pro Option screen used is remembered by your
Custom Program. From the search mode, either
ARROW control will access the last Basic Adjust-
ment or Pro Option screen used. This allows easy
access to the most used adjustment.
Factory Preloaded EEPROM PROGRAMS are
descrived on pages 53 and 54.
4

18
Chapter 4 DFX™Basic Adjustments
1. Target Volume 48 - 63
How loud a target beeps when detected.
Select TARGET VOLUME with the ARROW
controls and press ENTER. The current volume
level sounds continuously. The number designating
the current level is shown on the right side of the
display. To the left, the graphic knob indicates the
relationship of the current setting to minimum and
maximum levels.
Use the ARROW controls to select the volume level
you desire. Volume level will select the loudest
possible sound a shallow target can produce. High
volume levels will slightly reduce battery life.
Press MENU and use the ARROWS to continue
viewing and/or adjusting Basic Adjustments, or
Squeeze and release TRIGGER to begin searching.
56
TARGET VOLUME
MIN MAX
Tip - Select the loudest
comfortable level, lower
with headphones, higher
without. Settings from
48 - 63 are available.
23
AUDIO THRESHOLD
MIN MAX
2. Audio Threshold
The slight hum or background tone which is nor-
mally heard continuously during searching.
Select THRESHOLD with the ARROW controls,
and press ENTER . The current threshold level will
sound continuously. The number designating the
current level is shown on the right side of the
display. To the left the graphic knob indicates the
relationship of the current setting to minimum and
maximum levels. Note that the maximum threshold
level (42) is well below the minimum VOLUME
level. Thus with the THRESHOLD at maximum,
and the VOLUME at minimum, the detector will
still respond to metal. Use the ARROW control to
select the threshold level you desire. High thresh-
old levels will slightly reduce battery life.
Press MENU.
Tip - Select the lowest
level you can still hear.
Settings from 0 - 42 are
available

19
Chapter 4 DFX™Basic Adjustments
3. Tone (Audio Frequency)
Selects the frequency or pitch of the sound the
detector produces.
Select TONE (AUDIO FREQ.) with the ARROW
controls and press ENTER. The current TONE
will sound continuously. The number designating
the current level is shown on the right side of the
display. To the left, the graphic knob indicates the
relationship of the current setting to minimum and
maximum levels. Low frequencies, from about
100 down, begin to pulse. Select an audio fre-
quency that you can hear comfortably and pro-
vides the best definition for your ears. Press
MENU.
231
TONE(AUDIO FREQ)
MIN MAX
Tip - If you have trouble
hearing high frequencies
select low TONE levels
(low numbers). If you have
trouble hearing low fre-
quencies, select high
TONE levels (high num-
bers). Settings from 0-255
are available.
4. Audio Disc.
The ability of the detector to reject trash by
producing different sounds for different types of
targets. Trash is rejected by going silent or
producing a broken "cut-short" sound. Valuables
are detected by a smoother more solid sound.
Select AUDIO DISC. with the ARROW controls,
use the ENTER control to turn AUDIO DISC. ON
or OFF. When ON, specific targets will be accepted
or rejected based on the Program currently in use.
Audio Disc. turns ON or OFF the entire audio
discriminate feature. When OFF, all types of metals
produce an audio tone (beep). Only by selection of
a different Program, or by entering the Pro Options
under Discrimination, can specific targets (V.D.I.
numbers) acceptance or rejection criteria be altered.
Press ENTER.
AUDIO DISC.
ON
OFF
TO CHANGE PRESS ENTER
Tip - Use AUDIO DISC
ON for trash rejection,
AUDIO DISC OFF for
detection of all types of
metals.

20
Chapter 4 DFX™Basic Adjustments
5. Silent Search
The ability of the detector to be operated without
the threshold or background hum that is normally
heard continuously during operation. The
instrument is silent until a target is detected.
Select SILENT SEARCH with the ARROW
controls and use the ENTER control to turn
SILENT SEARCH ON or OFF.
To function, SILENT SEARCH requires AUDIO
DISC ON and MIXED MODE OFF. SILENT
SEARCH "ON" will automatically override both
AUDIO DISC and MIXED MODE menu
selection to perform the silent search function
regardless of your AUDIO DISC and MIXED
MODE selections. See chart on left side of this
page.
In Pro Options the Discriminate feature can be
used to accept all metal targets while using
SILENT SEARCH. It is not possible to achieve a
non-motion searching mode with SILENT
SEARCH ON. When SILENT SEARCH is ON
the all metal pinpointing mode continues to
produce a threshold. This may not be noticed, as
once the pinpoint mode detunes for better target
center locating the threshold is not present.
However, releasing, re-squeezing, and holding the
TRIGGER with the loop at waist level a threshold
will be noted. Press ENTER.
SILENT SEARCH
ON
OFF
TO CHANGE PRESS ENTER
Tip - A threshold hum is
recommended as it often
fades over rejected
targets providing
information about targets
and ground conditions. If
the constant noise
bothers or distracts you
and reduced AUDIO
THRESHOLD doesn't
help, select SILENT
SEARCH.
AUDIO
DISC
SELECTION
ON
OFF
ON
OFF
ON
OFF
ON
OFF
SILENT
SEARCH
SELECTION
OFF
OFF
ON
ON
OFF
OFF
ON
ON
MIXED
MODE
SELECTION
OFF
OFF
OFF
OFF
ON
ON
ON
ON
RESULT
THRESHOLD
DISCRIMINATION
ALL-METAL
NON-DISCRIMINATION
SILENT SEARCH
DISCRIMINATION
SILENT SEARCH
DISCRIMINATION
MIXED MODE
MIXED MODE
SILENT SEARCH
DISCRIMINATION
SILENT SEARCH
DISCRIMINATION