Whites TDI Pro User manual

TDI Pro Owner’s Guide 1
TDI Pro
O
WNER’S
White’s Electronics, Inc. -
Manufacturers of the World’s Finest Metal Detectors
GUIDE
™

2 TDI Pro Owner’s Guide
Although the new Pulsescan TDI Pro
was designed with the Gold Prospector
in mind, its features and performance will
be just as valuable to Beach, Relic, and
serious coin Hunters.
During the development of the Pulsescan TDI Pro, we kept in mind the
comfort of the user, easy to operate, in addition to producing outstanding
performance at an affordable price.
The Pulsescan TDI Pro is a deep searching, sensitive pulse induction
metal detector which incorporates a user controlled manual ground
balancing feature, a by product of which is the ability to produce an audio
tone, for possible identification of the detected target.
User controlled manual balancing of the ground has the additional benefit
of giving the user the option of fine tweaking for different situations, thus
increasing the probability of hearing the faint signals of small or deep
targets.
The Manual Ground Balance feature of the Pulsescan TDI Pro can be
turned off if the ground mineralization is not severe enough to require it,
as the pulse circuitry itself is able to ignore most ground mineralization by
its very nature. In this situation, with the FINE GEB off, there is no audio
tone variation all metal targets will sound alike, and additional depth can
be attained in low mineralized grounds.
White’s is proud to have been able to work with Eric Foster, of Oxford,
England, who enjoys the worldwide reputation of being the “Father of
Pulse Technology”.

TDI Pro Owner’s Guide 3
Contents -
Assembly..............................................................................................................4
Charging Systems and Batteri es.............................................................7
CONTROLS.................................................................................................................10
ON/ OFFGAIN.........................................................................................................10
VOLUME.....................................................................................................................11
THRESHOLD................................................................................................................12
TARGET CONDUCTIVITY..............................................................................................14
FREQUENCY ...............................................................................................................18
PULSE DELAY.............................................................................................................18
GEB (GROUND EXCLUSION BALANCE)......................................................................20
INITIALSET-UP...................................................................................................23
More Vari able Audio....................................................................................27
More Pulse Del ay..........................................................................................29
Whi te’s Warrant y Ser vice Centers......................................................31
Whi te’s Warranty..........................................................................................32
Whi te’s Warrant y UK...................................................................................34

4 TDI Pro Owner’s Guide
ASSEMBLY-
HIP MOUNTABLE
Washers between each
loop ear & clevis
Search Coil
Cable Retainer
Camlock
Clevis Lower Rod
S-rod
Search Coil
Connector
Control Box
Battery
Compartment
Door
Headphone
Jack
Battery
Compartment
Latches
Shown on TDI
*Assembly same for all TDI models

TDI Pro Owner’s Guide 5
1. Remove all parts from the shipping carton and check assembly page to
make sure all parts are present.
2. Install black rubber washers on fiber clevis/lower rod, insert lower rod
onto loop ears. Use only nonmetallic washers, fiber bolt, and fiber thumb-
nut to secure loop/search coil to clevis/lower rod.
3. Unlock “S” rod cam-lock 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 sized adults.
Individuals six feet or taller should use the fully extended position.
Individuals well over six feet tall should purchase the optional Tall Man
Rod accessory.
4. Unravel search coil 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, (10-16) revolutions. Use the black cable
retainers, one near the search coil, and one near the top of the curved “S”
rod, to hold the loop cable in place.
5. Unlock control box cam-lock and insert curved “S” rod so that stainless
steel spring clip buttons line up and lock into the rod on top the control
box. The “S” rod is designed to curve up towards the display. However,
those who prefer to sweep the search coil close to their feet may desire
to assemble the “S” rod to curve down towards the ground. Turn cam-lock
to secure. Plug search coil connector into control box (only fits one way),
screw lock ring finger tight to secure.
6. Grip the instrument by the handle, with your arm in the elbow cup with
strap and sweep the search coil over the floor. If the instrument fit feels
uncomfortable, readjust clevis/lower rod length with spring clip button and
cam-lock so that the loop/search coil can be held near the floor without
requiring bending at your waist (stooping over).

6 TDI Pro Owner’s Guide
7. Remove the protective paper from the two black arm 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 of the arm-cup without lessening the strap each time
you want to set the detector down to dig. The elbow cup strap provides
extra leverage and control. However, some prefer not to use it.
9. Charge and install battery as described in the next section.
10. It should be noted at this point that the detector might not work as ex-
pected indoors due to the high degree of metal used in modern construc-
tion. It is best to tune and practice out-of-doors to ensure stable, predict-
able results. Additionally, freshly buried targets will rarely produce the
typical depth and tone results of targets that have been naturally lost and
settled in undisturbed ground. Due to the abnormalities caused by digging
a hole in the ground matrix, and the lack of normal target to soil reactions,
it may take a number of years for freshly buried targets to respond at true
depths. The best way to determine true detection depth is in real search
conditions.
11. Hip or Chest Mounting;
a) Disconnect the search coil cable from the control box. On top
of the control box, the rod mounting plate has four Phillips head screws.
Remove these four screws and remove the rod/loop/arm cup assembly
from the top of the control box. To prevent moisture/dirt from entering the
control box, replace the four screws on top the control box (sink all the
way) without the rod or mounting plate.
b) Unravel enough loop cable from around the rod to allow slack
to sweep the rod/search coil. Connect the rod/search coil cable to the
control box. Use two black Velcro straps provided to secure loop/search

TDI Pro Owner’s Guide 7
coil cable to rod, one near the search coil and one near the last revolution
of the cable around the rod.
c) The control box can be worn on ones chest, hip, or waist based
on personal preference and comfort. Belt hook provided on bottom of
control box as well as four “D” rings to attach common camera/dog leash
connector type straps.
BATTERY AND CHARGINGSYSTEMS -
The Pulsescan TDI Pro uses a rechargeable Lithium Ion Battery pack as
the power supply. This type of battery is required to supply the high cur-
rent levels while weighing much less than other battery packs that have
similar power characteristics. It supplies a nominal voltage of 14.4 volts
and approximately 500 ma of current during use.
Lithium Ion Batteries require special handling during shipping and travel.
UN #3481 & 3480, DOT09042901 (60.2 watt hours). It must be carried on
passenger aircraft with contacts taped to prevent shorting. It Cannot be
transported if physically damaged.
The GREEN Battery Light on the top right side of the control box indi-
cates battery condition. When this Green Battery Light glows brightly, the
batteries have enough voltage to operate the Pulsescan TDI Pro properly.
Once the green light no longer shines, stop using the Pulsecan TDI Pro

8 TDI Pro Owner’s Guide
and recharge the battery. Continuing to use a battery “without the green
light shining” can damage the Lithium Ion Battery. Typically the Lithium
Ion battery will operate the Pulsescan TDI Pro approximately 8 hours per
charge.
Two battery chargers are supplied with the Pulsescan TDI Pro.
1. The Smart Charger (Part Number 509-0040) is used to recharge the
Lithium Ion Battery from a household wall outlet. It has two internal LED
lights that indicate the status of the battery charging cycle.
a. Connect the battery pack to the charger first and then plug the
charger into a household wall outlet.
b. The LED lights in the charger will flash RED-GREEN-RED-GREEN.
This is a self-check that indicates the charger and battery are
operating correctly.
c. The RED light then comes on steady to indicate the charger is
charging and the battery is accepting a charge.
d. When the battery reaches a full charge (a minimum of 7 hours),
the red light fades and the green light comes on indicating the
battery is fully charged and ready to use.
e. If the battery is left connected to the charger for an excessive
amount of time, the lights will return to the initial RED-GREEN-
RED-GREEN cycle indicating the system is no longer charging.
First unplug the charger from the wall, and then disconnect the
battery from the charger.
f. Only use the charger indoors, it is not weather proof.

TDI Pro Owner’s Guide 9
g. Do not cover the charger.
h. Do not use the charger in an ambient temperature greater than
140 degrees Fahrenheit / 40 degrees Celsius.
i . Charger and/or battery may get very warm during charging. This
is normal.
j . During recharging, position battery on the least combustible
surface available.
k. All rechargeable batteries slowly loose their charge during
storage, particularly if stored in the metal detector. After periods
of storage, recharge the battery prior to use.
l . Lithium Ion batteries can be recharged regardless if a partial
charge remains.
2. Optional 12 Volt (Automobile Accessory Jack) Battery Charger
a. Connect the 12 Volt charger to the 14.8 Volt Lithium-Ion Battery pack.
b. Connect the Charger to a 12-volt automobile accessory/cigarette
lighter plug in.
c. The charger light will flash RED-GREEN-RED GREEN. This
self-check cycle indicates the charger is working properly.
d. The RED light will turn on to indicate the battery is charging.
e. When the battery reaches full charge in about 3 hours, the GREEN
light will turn on and the battery will be ready to use.
f. Disconnect the charger from the 12-volt automobile accessory
/cigarette lighter plug in first, and then disconnect the battery from the
charger.
g. It is normal for the charger and battery to get warm during the
charging cycle. Position the battery on the least flammable surface
available.
h. This is a fast charger (3 hours) compared to the standard wall
charger that requires a minimum of 7 hours. Fast charging is not
recommended as the sole means of battery charging.
i . Do not use the charger in an ambient temperature greater than
140 degrees Fahrenheit or 40 degrees Celsius.

10 TDI Pro Owner’s Guide
WARNING -
• Use only to recharge White’s 14.8 Volt Lithium-Ion battery
pack #510-0023.
• Do not expose the battery or charger to rain or severe
humidity (it is not weather resistant).
• Keep all charger and batteries out of reach of children.
• During charging, position battery and charger on least
combustible surface available.
• Designed for use with negative ground 12 volt electrical
systems only.
CONTROLS
ON/ OFFGain -
What it does
The ON/OFF GAIN control turns the Pulsescan TDI Pro, ON (clockwise)
and OFF (fully counterclockwise) and selects the range at which the de-
tector will hear a given target. Gain increases or decreases the amplifica-
tion of the receive signal determining both how deeply the Pulsescan TDI
Pro will hear a target (in ideal conditions) combined with how it is influ-
enced by ground and external interference (in less than ideal conditions).
How to use it
Ground mineralization gets in the way of hearing target signals. This so-
called bad ground can be balanced out by a ground balance procedure (a
form of filtering) so that targets can be heard clearly. This process can be
accomplished more easily and effectively if the Gain is set at an appropri-
ate level.

TDI Pro Owner’s Guide 11
Never assume that the higher the Gain is set, the deeper the detector
will go. Although environmental noise EMI (electromagnetic interference)
can affect the level of Gain that can be used, the ground mineralization
has the greatest influence on how high the Gain can be set for optimum
performance.
By attempting to use more Gain than the ground minerals will allow, the
detector circuit can go into overload and in that condition will not be able
to perform properly. In that situation, reducing Gain will allow the detector
to effectively balance the ground and operate with increased performance
and improved penetration.
When operating the Pulsescan TDI Pro with a Threshold that is as smooth
as possible, the clarity of a true target signal will not be confused or hid-
den by false signals, chatter, or blanking of the Threshold, often the result
of too high a Gain setting. Keeping the detector ground balanced is very
important, however, the best way to maintain smooth stable operation is to
use the appropriate amount of Gain for the area conditions.
Inability to maintain a reasonable Threshold and/or Ground Balance, er-
ratic operation, false signals, or noisy, are all signs the Gain is set to high
for the area.
Volume -
What it does
The Volume control increases or decreases the loudness of the audio
influencing both target responses and the Threshold level.

12 TDI Pro Owner’s Guide
How to use it
Starting at the fully clockwise (maximum) position, anytime during searching
select a volume level comfortable for your hearing. It is recommended to set
volume to maximum prior to selecting a Threshold hum. Then, if target signals
are too loud, reduce volume during searching. The Threshold level may need to
be readjusted after significant Volume control changes. The Pulsescan TDI Pro
requires a Threshold level higher than most metal detectors to exceed noise.
By selecting this threshold above noise, and then reducing the Volume control,
the Threshold level, and the overall loudness of a target response, can both be
optimized to your hearing. When using headphones with separate built in volume
controls, it may be best to leave the Pulsescan TDI Pro Volume control at maxi-
mum, reducing the volume with the headphone volume control.
THRESHOLD -
What it does
The Threshold adjusts the steady faint background hum heard continuously dur-
ing searching. This is the edge of responding, providing the best overall sensitiv-
ity to targets as well as indicating what is occurring within the Pulsescan TDI
Pro’s electronics.
How to use it
In most detectors, including the Pulsescan TDI Pro, the Threshold is adjusted to
a faintly audible level, edge of responding. Unique to the Pulsescan TDI units, it
is best to adjust the Threshold past the chatter point so that the sound is reason-
ably steady and continuous. After selecting a Threshold level above the noise
level, the Volume control can be reduced to further reduce Threshold to a mini-
mum audible level while still taking into consideration adequate target response
volume for your hearing. Again, when using headphones with built in volume
controls leave Pulsescan TDI Pro Volume at maximum and reduce volume with
headphone control.

TDI Pro Owner’s Guide 13
THRESHOLD LEVELS ...
Noise
Threshol d
Level
Noise
Chatter can be heard in Threshol d
Threshol d
Level
Threshol d set above chatter so chatter is not
heard. Reduce volume wi th headphones
NOT RECOMMENDED
IDEAL

14 TDI Pro Owner’s Guide
TARGET CONDUCTIVITY-
What it does
This control allows the user to select whether to hear only low- conductive
targets, only high-conductive targets, or both types of targets. Low-con-
ductive targets, like small-to-medium sized gold nuggets will make a high-
tone sound. High-conductive targets like coins, except nickels, will make
a low-tone sound. This feature only works if the FINE Ground Balance
control is clockwise from the OFF position. When FINE ground balance
control is OFF, the Target Conductivity switch must be set to ALL or LOW
and all signals will sound the same.
How to use it
Set FINE GEB clockwise from OFF, Set TARGET CONDUCTIVITY to
low for low-conductive metals only, including small to medium-sized
gold nuggets, most small to large specimen gold in quartz, small gold
rings, very small silver rings and small gold coins, nickels, small thin ham-
mered silver coins, small bronze Roman coins, small boot tacks, lead bird
shot, tiny broken bits of iron, small to medium aluminum & pull-tabs, foil
and bits and tips of small nails, etc.
Set FINE GEB clockwise from OFF, Set TARGET CONDUCTIVITY to high
for high-conductive metals only, including all USA coins (except nickels),
most silver rings, silver U.S. coins, very large gold rings, large gold nug-

TDI Pro Owner’s Guide 15
gets, very high content gold nuggets (not common), U.S. gold coins above
2.5 dollars, 24K gold bullion (e.g. Canadian Maple leaf), small to large
nails when laying flat in the ground and large pieces of iron, large pieces
of lead, lead mini balls, lead musket balls, lead loom weights, bronze
buckles, bronze weights, bronze artifacts, etc.
IMPORTANT –TARGET CONDUCTIVITY Toggle only functions when
the FINE GEB is ON (clockwise from OFF). If the FINE
GEB is in the OFF position, you must set the
CONDUCTIVITY TOGGLE to either ALL or LOW
If the TARGET CONDUCTIVITY toggle is set to HIGH with FINE GEB
OFF, there will be NO SOUND on any metal target.

16 TDI Pro Owner’s Guide
Only
High Conducti vity Targets
RESPOND
Both
High and Low Conducti vity
Targets
RESPOND
Only
Low Conducti vity Targets
RESPOND
ALL
LOW
HIGH

TDI Pro Owner’s Guide 17
NOTE: Ground mineralization coil size, and ground balance
settings can also influence or even reverse the readings. Some
low-conductive metals could make a low tone, and/or some high-
conductive metals could make a high tone. Set to ALL for both high
and low-conductive metals. As long as FINE GEB control is ON,
Variable Audio will be heard.
When prospecting for gold, it is possible to reject a large nugget when se-
lecting to only hear low-conductive metals. The size where a nugget can
be classified as large is not exact as its shape and configuration can also
be a factor. However, most all small-to-medium sized gold nuggets will
fall in the low-conductive category. Prospectors should possibly opt
to search while hearing both high and low-conductive metals until a
determination is made as to how targets, including trash, are re-
sponding. If the gold in the area being searched is predominately small to
medium sized, then searching in low conductivity only will find most gold,
and eliminate most iron trash. Coin hunters can avoid digging small/me-
dium aluminum, foil and small bits of iron trash by using high conductive
only. Relic and beach hunters will ultimately find a way to make use of this
innovative feature. There is much to be learned by extensive field use, but
the possibilities appear to be endless.
MORE about Target Conductivity is listed under VARIABLE AUDIO on
page 27 of this guide.

18 TDI Pro Owner’s Guide
Frequency-
What it does
This control makes small adjustments up or down to the transmitter pulse
frequency or rate. This is used to counteract any interference which
might be due to outside electromagnetic sources, such as radio stations,
microwave, short wave, electric fences, power lines, lightening, electrical
storms, or other metal detectors being used nearby. This interference is
recognized by a warbling or pulsing of the audio threshold in a repetitive
way, and can mask target signals. The Pulsescan TDI Pro has a frequen-
cy range of 3.25 kHz to 3.37 kHz pulses per second.
How to use it
Electrical interference is not exclusive to urban areas, where power line
harmonics, local radio transmissions, or microwave transmissions can
raise havoc with the audio threshold. Getting too close to another metal
detectors being operated, or electric fences, or invisible pet fences, will
also cause this problem. A slight adjustment of the frequency control can
help make the audio more stable.
Pulse Delay-
What it does
The Pulsescan TDI Pro transmits a pulse and then after a time delay,
samples the received signal. This is the control knob for adjusting the
sample pulse delay. It alters the time between the end of each transmitter
pulse, and the start of the receiver-sampling period.

TDI Pro Owner’s Guide 19
How to use it
PULSE DELAY is measured in microseconds (uS). 10 uS is the lowest
setting, which samples as close as possible to end of the transmitter
pulse. This setting gives the highest sensitivity to all objects regardless of
conductivity. However, raising the pulse delay toward 25 uS can minimize
ground mineralization signals and maximize the signal to high-conductive
metals such as silver or larger targets by suppressing the signal from low
conductivity targets. This setting can be set anywhere between 10 uS and
25 uS depending on the circumstances to enhance performance.
If you wish to concentrate on detecting low-conductive targets for maxi-
mum sensitivity, you would want to set your Pulse Delay as close to 10 uS
as possible for the ground being searched. Low-conductive targets would
include small to medium gold nuggets, small or thin gold rings, and chains
as well as very thin, small hammered silver coins. If you were detecting for
thin gold rings at a beach, this would also be the proper setting to achieve
the most sensitivity.
Of course, at 10 uS you will also hear small bits of iron trash, bits of foil,
boot tacks and bits of nails, and very small pieces of lead like bird shot.
You may hear nails when swept across the broadside, but not when
sweeping from tip to tip. Aluminum & pull-tabs will also be heard. Very
low pulse delays can also result in the detection of conductive salt water
when detecting along beaches. Typically 17.5 uS is the best Pulse Delay
when searching wet salt.
If you were primarily looking for high conductive metals, such as silver,
increase the Pulse Delay toward the maximum setting of 25 uSec-
onds, thus reducing the signals from very small trash items such as small
iron and foil. Large iron usually falls into the category of silver, and gives
a stronger signal at higher Pulse Delays as well. One important thing to
remember is that whenever you change your Pulse Delay, you should
check and readjust your ground balance as necessary.

20 TDI Pro Owner’s Guide
MORE about Target Conductivity is listed under VARIABLE AUDIO
on page 27 of this guide.
GEB, Fine & Coarse (GROUND EXCLUSION BALANCE)-
What it does
These two GEB controls FINE & COARSE adjust or balance the inter-
ference from ground mineralization. FINE makes minor adjustments,
COARSE major adjustments. They are only operative when the FINE
control is set clockwise from the OFF position.
When FINE GEB is in the OFF position, the Pulsescan TDI Pro reverts
to a straight pulse induction detector which hears all metal targets with-
out Variable Audio, has no TARGET CONDUCTIVITY option, and no
COARSE or FINE manual ground balance control.
Again, FINE is used to make minor adjustments. COARSE is used to
make major adjustments. In any FINE ON (clockwise from off) position,
the Manual Ground Balance and the Audio Tone features are functional.
How to use it
Ground Balance must be done with the Target Conductivity control set to
All.
To ground balance Pulsescan TDI Pro, the search coil is pumped slowly
up and down from 1 inch near the ground to 6 inches above the ground
while listening for a change in sound.
Start this process with both the FINE and COARSE Controls at the center