Manual Nokta Simplex ULTRA (page 28 of 32) (English)

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USER

MANUAL

READ CAREFULLY BEFORE OPERATION OF THE

DEVICE

LEGAL DISCLAIMERS

Comply with applicable laws and regulations governing

use of metal detectors while using this detector. Do not

use the detector without authorization in protected or

archeological sites. Do not use this detector around

unexploded ordnance or in restricted military zones

without authorization. Notify appropriate authorities

with details of any historical or culturally significant

artifacts you find.

WARNINGS

SIMPLEX is a state-of-the-art electronic device. Do not

assemble or operate the device before reading the user

manual.

Do not store the device and search coil under extremely

low or high temperatures for extended periods. (Storage

Temperature: - 20°C to 60°C / - 4°F to 140°F)

The device has been designed with IP68 rating as a

waterproof unit up to 5 meters / 16ft. (except for the

Bluetooth® headphones included in the ULTRA WHP-

wireless headphone pack!)

Pay attention to the items below after using the device

especially under salty water:

1. Wash the system box, shaft and the coil with tap

water and be sure no salt water is left in the connectors.

2. Do not use any chemicals for cleaning and/or for any

other purposes.

3. Wipe the screen and the shaft dry with a soft, non-

scratch cloth.

Protect the detector against impacts during normal

use. For shipping, carefully place detector in original

carton and secure with shock resistant packaging.

SIMPLEX metal detector may only be disassembled

and repaired by Nokta Authorized Service Centers.

Unauthorized disassembly/intrusion into the metal

detector control housing for any reason voids the

warranty.

IMPORTANT

Do not use the device indoors. The device may constantly

give target signals indoors where there are many metals

present. Use the device outdoors, in open fields.

Do not let another detector or an electromagnetic

device come in close proximity (10m (30ft.)) to the device.

Do not carry any metal objects while using the device.

Keep the device away from your shoes while walking.

The device may detect the metals on you or inside your

shoes as targets.

TABLE OF CONTENTS

ASSEMBLY

INTRODUCTION TO THE DEVICE

DISPLAY

BATTERY INFORMATION

HEADPHONES

CORRECT USE

QUICK GUIDE

TARGET ID

SEARCH MODES

SENSITIVITY

TARGET DEPTH

GROUND BALANCE

SETTINGS

COMMON SETTINGS IN ALL

VERSIONS (LITE/BT/ULTRA)

SETTINGS FOR ULTRA

VERSION ONLY

PINPOINT

LARGE OR SHALLOW TARGETS

FALSE SIGNALS AND REASONS

MAGNETIC MINERALIZATION INDICATOR

ROCKS AND SEARCHING IN ROCKY

TERRAINS

DETECTION ON THE BEACH AND

UNDERWATER

CHECK COIL ICON

SOFTWARE UPDATE

TECHNICAL SPECIFICATIONS

: 2

: 3

: 4

: 5

: 6

: 7

: 8-9

: 10

: 11-12

: 13

: 14-15

: 16-23

: 16-21

: 21-23

: 24

: 25

: 26

: 27

ASSEMBLY

(1) After inserting the washers on the lower shaft, place

the lower shaft in its location on the search coil. Secure

by tightening the screw and nut. Do not overtighten.

(2) To join the middle rod with the upper and lower rods,

open the lever latches and engage the pieces together.

After adjusting the length of the device to your height,

press the latches to secure.

(3) Wind the search coil cable on the shaft without

stretching too much. Then, plug the connector to the

search coil input socket on the system box and secure

by tightening the nut. While tightening, you may hear

clicks indicating that the connector is secured.

(4) If you want to adjust the armrest, ﬁrst remove the

screws. After sliding the armrest up or down one level,

align the holes and secure by tightening the screws.

You can attach the spare screw to the empty hole if

you do not want to lose it.

(5) Insert the armrest strap as shown in the picture and

adjust it to your arm size and tighten.

INTRODUCTION TO THE DEVICE

(1) LCD Display

(2) Power & Settings Button

Press the button once to turn the device on. To turn

o the device, press and hold it for around 3 seconds.

For a hard reset in case of any unresponsiveness of

the system, press and hold down for about 6 seconds.

(3) Pinpoint / Back Button

(4) Minus (-) Button: Reduce Sensitivity / Values of

Settings

(5) Plus (+) Button: Increase Sensitivity / Values of

Settings

(6) Right Arrow: Right side navigation between the

search modes and settings.

(7) Left Arrow: Left side navigation between search

modes and settings.

(8) Ground Balance / Conﬁrm Button

(9) Speaker

(10) LED Flashlight

(11) Search coil input socket

(12) Wired headphones and charger input socket

IMPORTANT! When the connector is not in use, keep it

closed with the cap!

4 99

28 3 4 657

DISPLAY

4 99

(1) Target ID scale

Shows the ID of the detected target on the ID

scale. It also indicates the IDs filtered by Notch

Discrimination setting.

(2) Search Modes

(3) Sensitivity Indicator

(4) Section which shows the Target ID upon

target detection, pinpoint mode as well as the

warning icons. In addition, the value of any

setting selected from the menu is displayed in

this field.

(5) Magnetic Mineralization Indicator

(6) Wireless Connection

(7) Instant Depth Indicator

(8) Battery Level Indicator

(9) Settings

BATTERY INFORMATION

SIMPLEX has an internal 2300mAh Lithium Polymer

battery.

Battery runtime is approximately 12 hours. Factors such

as usage of speaker or wired/wireless headphones (not

applicable in the LITE version), display backlight, LED

flashlight etc. will affect battery runtime.

Charging

Charge the SIMPLEX before initial use.

Charging will take approximately 3 hours.

To charge the battery, insert one of the ends of the

cable to the wired headphones / charger input socket

and the other end to a USB charging adapter.

Optional Waterproof Battery Pack

You can purchase the optional battery pack and use

it when the device’s internal battery is dead and you

cannot charge it. You can attach the battery pack easily

to the back of the armrest as shown in the pictures.

The battery pack takes 4 AA Alkaline or rechargeable

NiCd or NiMH batteries.

The battery pack does not come with the device, it is

an optional accessory and it does not include the 4 AA

batteries.

Because the input socket for the wired headphones

cannot be used when the optional battery pack is

attached to the device, you can attach your wired

headphones to the input socket on the battery pack.

When the battery pack is detached, the device will shut

down and you need to turn it on again.

IMPORTANT! Optional battery pack cannot be

recharged and 2 optional battery packs cannot be

attached back to back to the device. When you want to

charge the internal battery of the device, do not forget

to disconnect the optional battery pack! Do not attempt

to attach the charging adapter to the connector

on the optional battery pack. This input is for wired

headphones only!

Operating with a Powerbank

You can also power and charge the battery with a

powerbank. To do this, just insert one of the ends of

the cable the wired headphones / charger input socket

and the other end to the powerbank. Please note that

you will not be able to attach wired headphones to the

device when a powerbank is attached to the device.

IMPORTANT! Do NOT use the detector underwater

while connected to a power bank.

Low Battery Level

Battery icon on the display shows the battery life

status. When the charge decreases, the bars inside

the battery icon decrease, too. A battery icon with

an exclamation mark (!) appears on display when the

batteries are depleted and after flashing 6 times, the

device shuts down.

BATTERY WARNINGS

Do not expose the device to extreme temperatures (for

example a car’s trunk or glove compartment)

Do not charge the battery in temperatures over 35° C

(95° F) or below 0° C ( 32° F).

The SIMPLEX battery can only be replaced by Nokta

Detectors or its authorized service centers.

INFORMATION ABOUT HEADPHONES

SIMPLEX ULTRA WHP (Wireless Headphones Pack) comes

with Bluetooth® headphones. The wireless headphones

are NOT waterproof.

Turning the Bluetooth® connection On/Off (this

setting is NOT available in the LITE version):

1. Press the Power & Settings Button once. Select

‘’Options’’ in the settings and press the Ground Balance

/ Confirm button. The first setting Bluetooth® will be

selected.

2. You can turn on or off the Bluetooth® connection

using the plus (+) and minus (-) buttons. When it’s off,

the box will be displayed in white, when it’s on, it will

be in black.

When the Bluetooth® connection is enabled, you can

wait to go back to the main screen (approximately 10

seconds) or press the Power & Settings button.

3. When the Bluetooth® connection is turned on, the

Bluetooth® icon will start blinking in the middle of the

screen with 3 dots.

The device will search for the headphones it has been

paired with initially and try to connect to those. This will

prevent the device from connecting to other Bluetooth®

devices when the Bluetooth® setting is on. If you want

to pair the device with different Bluetooth® headphones

(other than those it was initially paired with) you must

perform a factory reset (this will also affect all your

other settings).

Once it pairs with any Bluetooth® headphones (Nokta

BT Headphones or other), one of the icons below will be

displayed in the info section:

Standard Bluetooth® headphones connected.

aptX™ Low Latency headphones connected.

The Bluetooth® connection will work as long as the

system box of the device is not submerged in the

water. In other words, you can use your wireless

headphones while searching in shallow water with the

coil submerged underwater. Please remember though

that the wireless headphones should not contact with

water.

In case of the system box being submerged underwater,

the wireless connection will not work. In this case, you

need to purchase our optional waterproof headphones

for land and underwater use. If you will not submerge

the headphones underwater but just the system box,

then you can also purchase our Nokta Koss Headphones

with waterproof connector.

For land use only, you can also purchase our optional

headphones adapter should you want to use the

SIMPLEX with your own wired headphones.

For more information on the Nokta BT Headphones,

please refer to the user guide supplied with the

headphones.

CORRECT USE

Shaft height is wrong

It is very important to adjust the shaft to your height

correctly to be able to search without discomfort and

fatigue.

Shaft height is correct

Adjust the height of the shaft so that you are standing

in an upright position, your arm is relaxed and the

search coil is approximately 5 cm (~2’’) above the ground.

CORRECT WAY OF SWEEPING

Wrong search coil angle

Correct search coil angle

Incorrect way of sweeping

It is important to keep the search coil parallel to the

ground in order to get accurate results.

Correct way of sweeping

The search coil must be parallel to the ground at all

times.

QUICK GUIDE

1) Assemble the device as per the instructions on page 2.

2) Press the Power & Settings Button once to turn on

the device.

3) When the device is turned on, it will start in the

2-tone Field mode. You can change the mode based

on ground conditions. For instance, if you are detecting

on wet beach sand, you may want to select the Beach

mode. You can find more details on search modes

further in this manual.

4) You can increase the sensitivity if needed. Increasing

the sensitivity will offer you greater depth. However, if

the surroundings or the ground cause excessive noise

in the device, you need to lower the sensitivity setting.

5) Testing the device with various metals would be

helpful for getting familiar with the sounds produced

by the device.

6) Use the Notch Discrimination setting to eliminate

unwanted metals from detection such as trash.

SIMPLEX’s Notch Discrimination consists of 50 small

boxes shown under the TARGET ID scale. Each box

represents two IDs. A single ID or multiple IDs can be

rejected or accepted based upon your preference.

7) If you are detecting in a very trashy area and the

device is getting too many iron signals, instead of Notch

Discrimination, you can use the Tone Volume setting to

lower or completely turn off the volume of ferrous

metals. This will provide more depth (this setting is

available in the ULTRA version only).

GROUND BALANCE

SIMPLEX is designed to work without ground

balancing in Field and Park modes on most

terrains. However, for experienced users and

on highly mineralized grounds, ground

balancing will bring extra depth and stability to the

device.

Ground balance can be performed in two ways with the

SIMPLEX: Automatic and Manual.

When you press the Ground Balance / Confirm button,

the device will switch to All Metal mode automatically

regardless of the selected search mode and the

threshold will be heard.

90.0

Automatic Ground Balance

Automatic ground balance is performed as follows in all

search modes:

1. Find a spot where there is no metal.

2. Press and hold down the Ground Balance / Confirm

button and start pumping the search coil up and down

from about 15-20 cm (~6’’- 8’’) above the ground down

to 3 cm (~1’’) off the ground with smooth movements

and keeping it parallel to the ground.

15 - 20 cm

3 cm

3. Continue until a beep, indicating the completion of

ground balance, is heard. Based on ground conditions, it

usually takes about 2-4 pumps for the ground balance

to be completed.

4. Upon completion of the ground balance, ground

balance value is shown on the display. The device

continues to ground balance and produce a beep sound

as long as you keep pumping the coil. In order to ensure

that the ground balance is proper, ground balance at

least 2-3 times and check the ground balance values

on the display. In general, the difference between the

values shall not be higher than 1-2 numbers.

42.3

5. If you cannot ground balance, in other words, if

no beep sound is produced, it means that either the

ground is too conductive or not mineralized or there is a

target right below the search coil. In such a case, retry

ground balance at a different spot.

NOTE: If the ground mineralization is too low, automatic

ground balance may fail to work in other modes except

for the Beach mode.

Manual Ground Balance

Allows you to manually modify the ground balance

value. It is not preferred mostly because it takes time.

However, it is the preferred option in cases where

automatic ground balance cannot be performed or fine

tuning is necessary for the automatic ground balance

value.

SIMPLEX is designed to allow for automatic ground

balancing conveniently on any type of ground. However,

the ground may not be suitable for automatic ground

balancing in some cases and the device cannot ground

balance on such grounds. For instance, wet beach

sand, soils containing alkali or salty water, trashy

sites, ploughed fields, highly mineralized grounds and

grounds with very low mineralization are not suitable

for automatic ground balance. In such terrains, you can

try manual ground balancing. However, manual ground

balance requires a skill which develops over time

through practice.

To perform manual ground balance:

1) Find a clear spot without metals and press the

Ground Balance / Confirm button once.

2) You need to listen to the sounds coming from the

ground in order to perform manual ground balance.

Pump the search coil up and down from about 15-20

cm (~6’’- 8’’) above the ground down to 3 cm (~1’’) off the

ground with smooth movements and keeping it parallel

to the ground.

15 - 20 cm

3 cm

If the sound gets higher when lifting off the search coil

above the ground, the ground balance value is too low,

in other words, the effect from the ground is negative

and the ground balance value needs to be increased

by using the plus ( + ) button. On the other hand, if the

sound gets higher when lowering the search coil to the

ground, the ground balance value is too high, in other

words, the effect from the ground is positive and the

ground balance value needs to decreased by using the

minus (-) button.

3) The ground balance value will be shown on the

display and remain there for a moment. You can return

to the ground balance screen by pressing the Ground

Balance / Confirm button again if the screen switches.

Manual ground balance functions within the range of

0-99.9. Press plus (+) or minus (-) buttons to increase

or decrease the ground balance value, respectively. If

the buttons are pressed once at a time, the values

count one by one and if they are held down, the values

will change quickly.

4) Repeat the above procedure until the sound heard

from the ground is eliminated.

The sound may not be eliminated completely in some

areas. In these cases, listen to the sounds produced

when moving the search coil towards and away from

the ground to check if the ground balance is correct. If

there is no difference between the two sounds then the

ground balance is set properly.

IMPORTANT! Experienced detectorists adjust the

ground balance setting to a slightly positive response

(weak but audible sound is produced when moving the

search coil closer to ground). This method may produce

favorable results for experienced users in certain fields

where small targets are searched for.

Ground Balance Value

Ground balance value provides information about the

ground you are searching on. Some typical ground

types are as follows:

0-25 Wet salt water or wet alkali soils.

25-50 Wet salt water and wet alkali soils covered with

dry layers.

50-70 Regular, low-quality soils.

70-90 Highly magnetic soils, magnetite or maghemite

and similar highly mineralized soils, black sand.

Iron Off

Each time the SIMPLEX is turned on, iron will be off.

In other words, the detector will not detect ferrous

targets. To turn the iron on, first access the settings by

pressing the Power & Settings button.

In the LITE and BT versions: After pressing the

Power & Settings button, use the right and left buttons

to select the Iron Off setting. You can turn the iron on

by using the plus (+) and minus (-) buttons.

In the ULTRA version: After pressing the Power &

Settings button, use the right and left buttons to select

the Discrimination setting. Press the Ground Balance /

Confirm button to access the upper settings. Using the

right and left buttons, select the Iron Off setting which

is the second setting. You can turn the iron on by using

the plus (+) and minus (-) buttons.

Once you are done, you can press the Pinpoint / Back

button to go back to the main settings or go back to the

main screen by pressing the Power & Settings button.

Iron Off setting cannot be used in the All Metal and

Beach modes and thus cannot be selected.

Ground Suppressor

It is used to eliminate false ground signals in tough

terrains. If you think your device is noisy and you are

getting false signals and cannot get rid of them by

dropping the sensitivity to 25, first set your sensitivity

back to where it was. Then increase the Ground

Suppressor gradually until you get rid of the noise. As

the value is increased, the sensitivity of the device will be

less to high conductors (silver, copper etc.).

Ground Suppressor setting cannot be used in the All

Metal mode and thus cannot be selected.

Ground Suppressor setting is set to 5 in the Beach

mode and to 0 in the other modes by default. It is

recommended to use this setting at the minimum levels

if you are not getting noise from the ground.

To use this setting, after accessing the settings menu,

use the right and left buttons to select the Ground

Suppressor setting and adjust it by the plus (+) and

minus (-) buttons.

OPTIONS

In all the versions of the SIMPLEX, to access the

Options, press the Power & Settings button to go

into settings and then use the right and left buttons

to select the Options. Next, you can press the Ground

Balance / Confirm button to access the upper settings.

Once you are in the upper settings, you can use the

right and left buttons to select any setting you want.

While in the upper settings, you can press the Pinpoint

/ Back button to go back to the main settings or go

back to the main screen by pressing the Power &

Settings button.

Bluetooth® ( BT/ULTRA)

This setting, which is not available in the LITE version,

is used to turn on and off the Bluetooth® headphones

connection.

After choosing the Bluetooth® connection setting, you

can turn on or off the connection with the plus (+)

and minus (-) buttons. When it is off, the box will be

highlighted in black and when it is on, it will be white.

For more detailed info about the wireless headphones,

please read the instructions included with the

headphones.

The Bluetooth® setting is restored to the final saved

setting when the device is turned off and on again. This

setting is common in all modes; change made in any

mode also applies to the other modes.

Vibration

This feature provides feedback to the user by producing

a vibration effect when a target is detected. It can be

used independently or together with the audio response.

When audio response is disabled, all responses during

target detection are provided to the user as vibration

only.

When the Vibration is turned on, the device provides

short vibration signals upon target detection. The

magnitude of the vibration effect can vary according

to the depth of the target and the swinging speed. This

setting is common in all search modes.

To turn on or off the Vibration, after selecting vibration

in the settings menu, use the plus (+) and minus (-)

buttons. When it is off, the box will be highlighted in

black and when it is on, it will be white.

Vibration may not be felt in the All Metal mode with

weak signals; it will be felt as the signal gets stronger.

In other words, vibration does not start at the depth

where the audio tones are heard but at a lesser depth.

Therefore, if you are detecting with vibration only and

audio tones are off, you can miss weaker and deeper

signals.

NOTE: It is recommended that you swing the detector

more slowly while using the vibration to prevent

missing targets.

The vibration setting is restored to the final saved

setting when the device is turned off and on again. This

setting is common in all modes; change made in any

mode also applies to the other modes.

Brightness

It enables you to adjust the display and keypad

backlight level according to your personal preference. It

works in 2 different ways: Continuously or automatically

meaning the backlight lights up only for a short period

of time when a target is detected or while navigating

the menu and then it goes off. The default setting is

automatic.

To adjust the Brightness, use the plus (+) and minus

(-) buttons. The dotted boxes indicate the automatic

backlight level and the solid ones indicate the continuous

backlight level. To switch from automatic to continuous,

keep pressing the plus (+) or the minus (-) button. When

the box is not selected, it means that the backlight is

off. The continuous operation of the backlight will affect

power consumption, which is not recommended.

The backlight setting is restored to the final saved

setting when the device is turned off and on again. This

setting is common in all modes; change made in any

mode also applies to the other modes.

LED Flashlight

It is the headlight used for lighting the area you are

scanning while detecting at night or in dark locations.

To turn on or off the LED Flashlight, after selecting it

in the settings menu, use the plus (+) and minus (-)

buttons.

The LED Flashlight will always revert back to off

position when the device is turned off and on again.

This setting is common in all modes; change made in

any mode also applies to the other modes.

LED Flashlight does not operate when the device is off.

It is recommended to turn it on only when necessary

since its operation consumes extra battery power.

Save and Factory Defaults

SIMPLEX will save all settings automatically once you

turn your detector off and on again except for the ones

listed below:

Ground Balance, Iron Off, Ground Suppressor, Frequency

Shift and LED Flashlight.

To revert back to factory defaults, press the plus (+) or

the minus (-) button once. After hearing 3 beeps, the

device will revert back to factory defaults and go back

to the main screen.

To adjust the Recovery Speed, press the Power &

Settings button. Then use the right and left buttons to

select the Recovery Setting. The current value will be

displayed on the screen. Adjust it by using the plus (+)

and minus (-) buttons.

Tone Settings

These advanced tone settings offer 3 options to modify

the sounds The SIMPLEX ULTRA generates for targets.

Tone Break, Tone Frequency and Tone Volume.

Press the Power & Settings button once. Select the

tone setting using the right and left buttons.

When tone is selected, you can see all the tone settings

in the second row over the settings. Press the Ground

Balance / Confirm button to access the upper settings.

To go back to the lower settings, press the Pinpoint /

Back button.

NOTE: To go back to the main screen from tone settings,

press the Power & Settings button.

Tone Break

The Tone Break setting allows you to move the point

that separates the target zones.

The default Tone Break points may not provide you

with the distinction you need between the targets you

are looking for. With the Tone Break setting, you can

adjust the start/end points of target zones.

Tone Break setting only affects the mode currently

selected; changes made in one mode do not affect the

others.

Once you are in the upper tone settings, using the right

and left buttons, select the Tone Break setting. The

Tone Break point of the selected zone will be displayed

on screen. The selected zone will be displayed with a

closed frame.

You can change the Tone Break point using the plus (+)

and minus (-) buttons. To select the next zone, press the

Ground Balance / Confirm button.

Once you are done, you can go back to main settings

by pressing the Pinpoint / Back button once or back

to the main screen, by pressing the Power & Settings

button.

PINPOINT

Pinpoint is to find the center or the exact location of a

detected target.

SIMPLEX is a motion detector. In other words, you are

required to move the search coil over the target or the

target over the search coil in order for the device to

detect the target. The pinpoint mode is a non-motion

mode. The device continues to give a signal when the

search coil is kept stationary over the target.

When the pinpoint button is pressed and held down,

a graphics consisting of a dot surrounded by 4 circles

will appear in the middle of the screen. As the target is

approached, the circles will disappear one by one and

when the center of the target is reached, only the dot

will be left on screen. In the pinpoint mode, the signal

tone increases in pitch and volume as the search coil

approaches the target. In this mode, the device does

not discriminate or give target IDs.

To perform pinpoint:

1) After a target is detected, move the search coil

aside where there is no target response and push the

pinpoint button.

2) Keep the button pressed down and bring the search

coil closer to the target slowly and parallel to the

ground.

3) Signal sound becomes stronger and changes in pitch

while getting closer to the target center and the circles

start disappearing in the pinpoint graphics.

4) Mark the position which provides the loudest sound

using a tool or your foot.

5) Repeat the above procedure by changing your

direction 90°. Actions to be performed from a couple

of different directions will narrow the target area and

provide you with the most exact details of the target

location.

NOTE: Inexperienced users may put the search coil on

the ground, press the pinpoint button and then scan

over the target until they get experienced to perform

the above pinpointing method.

LARGE OR NEAR-SURFACE

TARGETS

Targets which are near the surface may give multiple

different signals to the device. If you suspect a target

near the surface, lift the search coil and swing it more

slowly until a single signal is received.

FALSE SIGNALS AND REASONS

Sometimes, the device may produce signals which

are similar to a target signal although no metal target

is present. There are various reasons for the false

signals received by the device. The most common ones

are ground mineralization or rocks with high mineral

content, surrounding electromagnetic signals, operation

of another nearby detector, rusted or corroded iron or

foil in the soil or sensitivity value set too high.

You can see the mineralization level of the ground by

following the magnetic mineralization indicator on the

screen and adjust the sensitivity accordingly.

IMPORTANT! If the device receives a lot of noise and/

or emits false signals and you cannot eliminate it by

reducing the sensitivity to 25, first set your sensitivity

back to its original level. Then increase the Ground

Suppressor value until the noise is eliminated. As the

Ground Suppressor value is increased, the device’s

sensitivity to high conductive (silver, copper etc.) targets

will decrease.

Surrounding electromagnetic signals can be eliminated

by reducing the gain. If another detector is operating

nearby, you may attempt to shift the frequency or

perform your search at a distance where no interference

occurs.

MAGNETIC MINERALIZATION

INDICATOR

The Magnetic Mineralization Indicator consists of 5

levels. The indicator bars do not rise at low mineral

levels during search and at start up. In areas where the

magnetic mineral level is high, the indicator bars will

rise according to the intensity. This measurement can

be summarized as the level of magnetic property and

intensity of the ground.

This measurement is important from two aspects. First,

on grounds with high magnetic mineralization, search

depth is low and users should be aware of this fact.

Second, magnetic mineralization is a property which

is particularly seen with mineralized rocks and this

measurement plays an important role for the device

to eliminate the false signals produced by these rocks.

ROCKS AND SEARCHING IN ROCKY

TERRAINS

Challenging ground conditions arise especially when

conductivity and magnetic properties of the ground are

too intense. Operation of the device over such ground

is made possible by selecting the best operating mode,

sensitivity and ground balance settings.

Stones and rocks or cavities inside the ground are as

important as the ground itself in regards to the search

and target detection quality.

Hot rocks are classified as negative or positive based

on their ID being low or high in comparison to the ID

of the soil they are in. One or both of the types may

be present in a field. The negative and positive effects

mentioned here will only be valid if ground balancing is

properly done on the existing ground. Otherwise, soil

itself will not act differently from hot rocks in terms

of ID.

Positive rocks act just like metal and produce a metal

sound. In the All Metal mode they produce a “zip zip”

sound when the search coil is moved over them. If the

signal is strong enough, the device may produce an ID

for these rocks. Negative rocks in the All Metal mode,

produce a long “boing” sound when the search coil is

moved over them. The device does not give an ID for

these rocks even if the signal is strong.

Positive rocks provide a typical metal sound in

discrimination modes. Negative rocks do not provide a

sound in discrimination modes (except for rare cases of

false signals).

Therefore, you can make a decision by listening to

the audio responses produced by the device in the

field. If you receive a metal sound, it means that you

either detected a positive rock or a piece of metal. If

you receive a strong signal and a stable ID, you can

distinguish if the detected target is a rock or metal by

checking the ID. However, remember that weak signals

may produce different IDs and metals under rocks may

produce different metal signals. Therefore, the most

appropriate action is to dig up when a metal signal is

received.

www.noktadetectors.com

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Nokta Simplex ULTRA Manual

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