Jaycar Electronics QP2303 User Manual

LCD Portable
Metal Detector

With In Built Speaker

User Manual

1

Assembly

1. Relax the end of the bend-shape tube sleeve clockwise, and insert the

aluminum tube which connects the search coil into the tube sleeve, adjusting
the length so that you can stand comfortably and straighten your arms,when
the search coil is from the ground about 1/2 inches,then lock the tube sleeve
anti-clockwise.( Fig.1 and Fig.2)

2.

Fig. 1

Fig. 2

3. Let the plastic pillar with two nuts on the bottom of the detector control box
align with the two holes of the bend shape aluminum tube,and then lock it with bolts.
(Fig.3)

Fig. 3

Coil the cable of the search coil onto the stem,elasticity within measure so that the
cable won’t sway, and then insert the cable plug into the lower right plug of the

2

control box.(Fig.4)

Fig. 4

4. The arm support has two positions,t he initial position is that the arm support is
in longer location, if your arms are shorter then you can adjust the arm support
position. Please release the left and right screw under the arm support when regulation
to loosen the left and right arm support, and remove the arm support forward to
another position,then tighten the two screws.(Fig.5)

Fig. 5

Batteries

Please use 6 x Alkaline AA batteries (not included).

1. Press the “key” on the battery cover in the direction of the arrow,pull out the

battery cover.(Fig 6)

3

Fig. 6

2. Insert the 6 x AA batteries into the compartment as indicated by the polarity

symbols marked inside the compartment. (Fig 6)

Fig. 7

3. Close the battery cover. Please notice the “UP” direction indication on the battery

cover.
6 x Alkaline batteries can operate up to 40 hours battery life . If you don’t use detector
for a week or more, please remove the batteries from the battery box.

Function and indicator

1． LCD screen (Fig 8)

Fig. 8

4

On the top of LCD screen is the TARGET ID，namely target identification
cursor. On the bottom is the DEPTH-SENS, namely the depth and sensitivity shared
cursor. The central left is the low-voltage indication cursor.

 When searching,the target identification cursor divide the metal targets into

three categories :
Silver Higher conductivity metals,such as silver, aluminum and copper.
MID RANGE——Medium conductivity metals, such as nickel and some coins.

Generally golden rings can be also illumined at this point.

IRON——Low conductivity metals, such as iron and all types of ferrous metals

can be illumined at this point.

 When presetting the Target Identification button to discriminate mode,it

indicates as the discrimination mode.

 When turning on the unit,the DEPTH-SENS instructs the sensitivity cursor,

turn to the initial state, the three segments of the left is lighted,it means the

sensitivity is in the third level. Press the "SENSTIVITY" "+" key,the detector

sounds four tones,the four segments of the DEPTH-SENS are all lighted, it

means the sensitivity is in the fourth level,that is the most advanced level.

Press the "SENSTIVITY" "-" keys,the tones of the detector are reduced one

time,and the segments of lighted are also reduced one section, it means the

sensitivity is reduces a level.

 When searching,the DEPTH-SENS directs the target depth. The first

segment that is also the "0" segment illuminated and flickered,it indicates the
metal target is near the ground. The fourth segment that is the "6" segment
illuminated and flickered, it indicates the target is at about the 6 inches
position. Of course, It only shows the relative depth of the metal objects,
rather than the precise depth.

 When it find the targets, The TARGET ID and DEPTH ID will flicker about 5

seconds, and then the cursor of the discriminate mode and the sensitivity
instruction will come back to the pre-set position,and will remain unchanged
until find the metal targets next time.

 The low battery indication cursor
When the cursor on the left of the LCD is lighted,which indicates you it’s the
time to change the battery.

2，Three kinds of sounds

Press the “POWER ON” button, the detector will sound the three frequencies of

“low,medium,high” tones,the sensitivity ruler mark illumines three segments,which
means the sensitivity is in the third level. The Target Indication cursor isn’t
illuminated, which means the discrimination mode is set in the ALL METAL state.

When sweeping the four types of metals 2 inches above the top of search coil,the

detector will respond with different sound.,the target identification on LCD will be
illumined correspondingly.

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Target categories Indication sound TARGET ID indication

Iron nail Low tone

Nickel,coins Medium tone

25 cents High tone

IRON is illumined and flickered

about 5 seconds

MID RANGE is illumined and

flickered about 5 seconds

SILVER is illumined and flickered

about 5 seconds

3， Four kinds of discrimination modes

The detector is automatically set to the ALL METAL mode,when it’s powered

on,n amely it will respond to all types of metals. Press the “MODE” button,it will
eliminate the metals that you don’t want, press“MODE”button for several times,the
operator can choose from the four kinds of different discrimination settings.

Four kinds of modes Indication sound

Initial state High tone Not illumined

press“MODE”button Low tone Iron is illumined Iron is eliminated

TARGET ID

indication

The Eliminated

metals

Can’t eliminate any

metals

press“MODE” button

again

press“MODE”button

again

press“MODE” button

again

Medium tone

Low tone and

medium tone by

turns

High tone Not illumined

Mid range is

illumined

Iron and Mid

range are all

illumined

Nickel, Coins

Iron, nickel, coins

are eliminated at the

same time

Can’t eliminate any

metals and in the

ALL METAL state

Note:the times of the detector sounding the tone is the same with the sensitivity
level,which means when the sensitivity is at the fourth level,the detector will sound
four times.

Quick Start

1. Lay the metal detector properly

 In order to avoid the metals influencing the detector, be sure to lay the the

metal detector properly. Place the detector on a wooden or plastic table. Let the
search coil exceed the table edge about more than 15cm, and adjust the search
coil so that the flat part points upwards.(Fig 9)

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Fig. 9

 Please take off any watches, rings or other metal objects on your hand or arm.

Keep the detector away from any walls, floors and other metal objects.

 Be sure to keep the detector away from the light, TV, computer or mobile

phones, which can cause electro-magnetic interference.

3． Turn on

Press the POWER ON button,the detector will sound the three frequencies of
low, medium and high tones,and together with three “ID” tones. The liquid
crystal pattern scans once, and then shows the discrimination mode and the
sensitivity.

TARGET ID——Not illumined It means it’s in the ALL METAL state.
DEPTH –SENS——illumines the third segment It means the sensitivity is at the

third level.

Note:if you don’t change the discriminate mode and the sensitivity level, the
LCD will hold the line. When the detector finds the metal,the TARGET ID will
indicate the kind of the metal,and the DEPTH-SENS will show the approximate depth
of the target objects. After flicking about 5 seconds,the LCD comes back to the setting
state.

4． All metals

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When turning on the unit, the detector is at the ALL METAL state,sweep the
metal sample above the center of the search coil (5cm)

Operate

Indicatio

n tone

LCD

TARGET

ID

LCD

DEPTH-

SENS

Chart Note

Turn on

Sweep

Nickel,

iron

nail

coins

Silver

Turn on

indicatio

n

a low

tone

a

medium

tone

a high

tone

Nothing

displayed

The IRON

is

illuminate

d and

MID

RANGE

is

illuminate

d and

flickers

SILVER

is

illuminate

d and

flicker

SENS-3

is illuminated

DEPTH-2

is illuminated

and flickers

DEPTH-2

is illuminated

and flickers

DEPTH-2

is illuminated

and flicker

If the height of

the metal

sample from

the search coil

is changed, the

lighted

segments of the

LCD height

mark cursor

will be changed

correspondingl

y.

5． Eliminate iron

Operate

Press

MODE

button

Indicatio

n tone

Three

low

tones

LCD

TARGET ID

IRON

LCD

DEPTH-SENS

SENS-3

is illuminated

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Chart Note

Press the
MODE
button,the
times of
the
detector

Sweep

iron nail

Silent

IRON

flickers once

SENS-3

flicker sonce

Nickel,

coins

Silver

A

medium

tone

A high

tone

MID

RANGE is

illuminated

and flicker

SILVER

is

illuminated

and flicker

DEPTH-2

is illuminated

and flickers

DEPTH-2

is illuminated

and flickers

6. Eliminate the medium conductivity metals

Operate

Press

MODE
button

Indication

tone

Three

medium

tones

LCD

TARGET

ID

MID

RANGE is

illuminated

LCD

DEPTH-SENS

SENS-3 is

illuminated

Chart Note

Sweep

iron nail

Nickel,

Silver

coins

A low

tone

Silent

A high

tone

IRON

is

illuminated

and flickers

MID

RANGEis

flickers

once

SILVER

is

illuminated

and flickers

DEPTH-2

is illuminated

and flickers

SENS-3

flickers once

DEPTH-2

is illuminated

and flickers

9

R

7. Eliminate the iron and the medium conductivity metals at the
same time

Operate

Press

MODE

button

Nickel,
Coins

Indicatio

n tone

It

responds

with

low,

medium

tone

alternate

ly,and

repeats

three

times

Silent

LCD

TARGET

ID

IRON、

MID

RANGE

is
illuminated
at the same

time

IRON、

MID

RANGE

flicker

sonce

LCD

DEPTH-

SENS

SENS-3

is illuminated

SENS-3

flickers once

Chart Note

Pres the

MODE

button

again,it

comes

back to

METAL

ALL

mode

Silver

A high

tone

SILVE

is
illuminated

and flickers

DEPTH-2

is illuminated

and flickers

Operating the detector outdoors

1.Turn on

Press the “power on” button, the cursors on the LCD screen will be illuminated
one by one, and the detector will sound the three frequency tone of low,medium and
high, the detector is now ready. It’s the Initial State：

TARGET ID cursor is not lit,which means it’s in the ALL METAL state.

DEPTH-SENS 3 segments are lit,which means the sensitivity is at the third level.

2.Choose the sensitivity

Press the “SENSTIVITY ” “+”or “-” button, you can regulate the sensitivity.
Generally speaking,we set it to the highest level,if there is much electromagnetic
interference around or the soil is highly mineralized, the detector will have an erratic
tone, and if this happens, you should reduce the detector’s sensitivity.

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Note: If you detect with your more than one metal detector, please keep at least
5m apart.

3.Choose the discrimination modes

Press the Mode button, you can choose from the four discrimination modes,if
you are not interested in iron targets, you can choose to reject the iron,if the pull-tabs
off cans disturb your detection, you can choose to reject the pull-tabs. Please be
sure,not to reject the noble metal such as gold.

Generally, you can choose ALL METAL mode, which is used to detect all
metals, when you find a metal target, adjust the different discrimination mode to
determine the kind of the object. This would help you to determine whether it is worth
digging.

Note:Once you’ve set the sensitivity and discrimination mode, if you don’t reset

the settings, it will not change until you turn the unit OFF,. Every time the detector
find the target object,the TARGET ID will show the target category, while the
DEPTH-SENS will show the approximate depth of the target object,and will flicker
for about 5 seconds, the LCD will come back to the state which you have set.

4.Motion detect

When detecting,slowly sweep the search coil, let the search coil parallel with and
about 1-5cm)above the surface. Never sweep the search coil as if it were a
pendulum.(Fig 10、11)

Fig. 10

Fig. 11

Most worthwhile metal objects will bring a repeatable tone, if the signal can’ t be
repeated it is more than likely trash metals. When a clear sound is heard to show you
the buried target objects, you can get the approximate target type and depth on the
LCD screen,and you can also try sweeping the detected targets above the search coil

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quickly,to help you get the more steady signal.

5.Pinpoint the target

When there is a clear signal to show you the location of the buried target
objects,you can “X” the target at different angles to zero on the exact spot on the
ground where the “beep” occurs. You can do a "X" scan in this district, generally the
bottom of the intersection point is the target object.(Fig 12)

Fig.12

6.Power off pr ompt

If you forget to power off the metal detector after use, the metal detector will
emit three short beeps every 10 minutes, and start the automatic scanning procedure
as power on to remind you power off the unit in time.

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