Dawson DCT220 User manual

DCT220
CABLE LOCATOR
User’s Manual

CONTENTS CONTENTS
Safety Information ....................................2
1.1 Prouduct introduction...........................7
Open-case lnspection ................................1
1.2 Features..........................................8
1.3 Description.......................................9
2. .....................12Measurement Preparation
2.1 Measurement precautions.................12
2.2 Connection Methods .......................13
2.3 Usage Example..............................15
3. ....................................17Using the Meter
3.1 One-pole application ..........................17
3.2 application Dual-pole ........................27
1.Overview................................................7
3.3 Increasing the effective detecting
radius in charged circuits.....................32
3.4 Non-Contact Voltage detection...............34
4.Other Functions......................................35
4.1 Voltmeter functionality on the transmitter......35
4.2 Work light function ...............................35
4.3 Back light function ...............................35
5. .......................................36Specifications
5.1 Transmitter Specifications.....................36
5.2 Receiver Specifications........................36
4.4 Detecting deeply laid circuits...................35
4.5 Auto power off function..........................35
6. .........................37Repair and Maintenance
6.1 Troubleshooting.................................38
6.2 Checking the transmitter's fuse................38
6.3 Cleaning.........................................39
6.4 Replacing the battery...........................39
6.5 Calibration.......................................40
Contact Dawson........................................40

01 02
OPEN-CASE INSPECTION
When receiving the Cable Locator,please it
carefully to ensure no damage has occurred during
transport.Control switches and connectors need to be
checked.If there is any obviousdamage or functional
failure,please contact your supplier.
inspect
Alligator clips: 2 pcs
(1 red and 1 black)
Battery: 2 pcs
(9V alkaline batteries)
Test leads: 2 pcs
(1 red and 1 black)
Test probes: 2 pcs
(1 red and 1 black)
SAFETY INFORMATION
WARNING
This cable locator is produced in accordance with
safety specifications for electronic testing instruments.
Before using this device, please read this manual
carefully and follow all procedures within. Failure to
do so could lead to personal injury or damage to the
meter.
Safety Symbols
Before using this product,please read the following
safety instructions carefully.
Important information. Read manual
before using.
Danger; use caution.
Unit conforms to European Union (EU)
safety standards.
Misuse may cause personal injury or
damage to the meter.
Misuse may cause personal injury or
damage to the meter.
Suggestions or tips for operation.

03 04
Attention
Please observe the following instructions to ensure safe
operation and optimal performace.
1)Preliminary Inspection
Check the meter and accessories thoroughly before use.
Contact your local distributor if the meter or any components
are damaged or malfunction.
WARNING
Follow all standard safety procedures regarding the
use of electrical testing instruments when using the
cable locator.
2)Placement
To avoid failures,please don’t place the cable locator
under the following environments:
• Avoid direct exposure to sunlight to ensure extended life of
the meter.
• Do not place the meter in any environment with high
pressure, high temperature, dust, explosive gas or vapor.
• Do not place the meter near a strong magnetic field which
may cause false readings.
• Avoid placing the meter on any surface with a high
mechanical vibration.
3)Use
To prevent personal injury or damage to the meter
during use, the following safety instructions should
be carefully observed.
1. Follow all industrial safety codes to avoid electric shock
when using the meter on live circuits.
2. Always use caution when working with voltages above
60VDC or 30VAC rms. Keep fingers behind probe barriers
at all times.
3. Observe the polarity of the battery when changing.
Reversing the battery polarity can damage the meter and
cause a potentially dangerous situation.

05 06
WARNING
1. Measurements near electrical installations should only be
performed by professionals.
2. Remove test leads from any live circuit before disconnecting
leads from transmitter.
3. Do not dismantle battery.The electrolyte contained in a
battery has a high risk of corrosion if exposed.If the
electrolyte contacts skin or clothes, quickly rinse affected
area with water.If electrolyte contacts eyes, rinse with cold
water and contact a physician immediately.
4. As the connection of the transmitter with the mains may
generate circuit current of milliampere level,in live condition
the Grounding hole of the transmitter can be only connected
with a neutral conductor. If transmitter connection is
reslized from the phase towards the protective conductor,the
functional safety of the protective conductor must be tested
first,in compliance with DIN VDE 0100.The reason is that
when connecting the transmitter from phase towards ground,
all parts being connected to the earth may be live in the
event of an error(if the earth resistance does not comply with
the prescriptions).
5. Do not use the instrument if the safety of the user cannot
be ensured.
Potential examples are:
• Signs of obvious damage to the unit.
• Measurement results highly deviate from estimated result.
• Instrument stored in unsuitable conditions for extended period.
• Instrument was subjected to physical/mechanical stress
during transport.
6. This instrument is designed to be used as specified within
this manual.The safe use of the instrument cannot be
guaranteed with any modifications to the instrument.
1. Operating temperature of the instrument is
0-40°C (32-104°F).
2. Always protect the device against exposure
to excessive mechanical vibration or
dropping during use.
3. Calibration and repair should only be carried
out by trained personnel.
4. Check the instrument before initial use to
ensure no damage occurred during delivery.
Do not use the instrument if any damage is
observed.
5. Do not attempt to measure voltages that may
exceed the rated voltage listed in the
technical specifications.
6. Avoid exposure to direct sunlight to ensure
the long life of the instrument.
7. Do not place the instrument in a high
electromagnetic field to avoid inaccurate
readings.
8. Only use batteries as listed in the
specifications.
9. Avoid exposing the battery to humidity.
Replace as as the low battery symbol appears.

07 08
1. If the instrument has been stored in unfavorable
conditions, place the instrument in a more favorable
climate before using.
2. When the transmitter is connected to the mains, if
the negative side of the transmitter is connected to
the protective ground phase, the current leakage
(if any) in the power supply line may combine with
the current of the transmitter, which may lead to
tripping the circuit breaker.
3. Keep the original packaging for future shipping
purposes (ex. calibration)
1. OVERVIEW
1.1 Product Introduction
This cable locator is a transmitter and receiver with advanced
integrated circuitry for a highly stable and reliable performing
meter. The transmitter sends a modulated AC digital signal
along the cable or pipe and moving the receiver along the path
of the cable or pipe to track it inside the wall.The receiver will
change tone based on the intensity of the signal received.
The transmitter also has built in AC/DC voltmeter capabilities
to display the voltage of the line being tested along with a
warning when testing live conductors.The cable locator is
useful in maintenance and construction/installation of
telecommunication lines, power lines and building pipelines.
1.2 Features
• Detecting cables, electrical lines, water/gas supply lines
buried in the wall/ground.
• Detecting breaks or shorts in cables and electrical lines
buried in the wall/ground.
• Detecting fuses and current directions.
• Detecting interruptions and short-circuits in floor heating;
• Integrated AC/DC voltmeter function to measure 12-400V.
• The sensitivity of the receiver can be adjusted manually or
done automatically.
• The receiver automatically detects the selected transmitted
signal.
• The receiver has a built in flashlight for use in dark areas.
• Both the transmitter and receiver have backlights for use in
dark areas.

1
2
3
4
5
6
7
1
2
3
4
5
6
7
8
9
10
Low Battery
Signal Level
Auto Detection Sensitivity
Manual Detection
Sensitivity
Signal Strength
Signal Strength(bar graph)
Audio Mute
Detection Sensitivity
NCV Mode
Signal Code
1.3.3 Receiver
09 10
Receiver Tip
LCD Screen
Power Button
Flashlight Button
Backlight/Audio Mute Button
Up Button
Flashlight(under tip)
Manual Sensitivity Button
Non-Contact Voltage Button
Down Button
1.3.4 Receiver display
1
3
4
5
6
7
8
9
10
2
1.3 Description
1.3.1 Transmitter
Ground(-) Jack
Input/Output(+) Jack
LCD Screen
Power Button
Power Level Select Button
Backlight/Audio Mute Button
Up Button
Start/Stop Tranmission Button
Code Select Button
Down Button
1.3.2 Transmitter display
Low Battery
Signal Level
Signal Code
AC/DC Voltage
Voltage Measurement
Audio Mute
Transmission Indicator
2
1
3
4
5
6
7
8
10
9

11 12
1.3.5 Receiver's display using different
modes
(1) Automatic mode (2) Manual mode
(2)Non-Contact Voltage mode
2. MEASURING PREPARATION
2.1 Measurement Precautions
1. Because the transmitter, when connected
to a live socket/mains, may generate a
small current, the negative side of the
transmitter should only be connected to
the neutral line. If connected to the
grounding line, test the line first to ensure
it complies with DIN VDE 0100 safety
standards. The grounding line may be
compromised if an error during testing
occurs and the line does not meet the
above safety standards.
2. When the transmitter is connected with
live mains,if the Grounding hole of the
transmitter isconnected with protective
ground phase,the current leakage (if any)
in the power supply line may join the ciruit
current of the transmitter,leading to
tripping of the leakage circuit,i,e.tripping
of FI/RCD .
1. Sometimes there might be a small spark
when connecting the leads of the
transmitter to a voltage source. This is
normal.
2. When the transmitter is in either code
select, level select or transmission modes,
the other two mode's are disabled.
3. If the receiver is in manual mode, NCV mode
is disabled; in NCV mode, manual mode is
disabled.

13 14
1. Ensure the transmitter is connected in a
closed circuit before performing any
function.
2. The cable locator can only detect lines
that are connected in this .manner
2.2 Connection Methods Optional connections:
1. One-pole connection: Connecting the
transmitter using one lead. Because of the
high-frequency signal generated by the
transmitter, only one conductor can be
located and traced. The second lead serves
as ground.
2. Double pole connection: Connecting the
transmitter using both leads (for both live
and inactive circuits.
Live circuits:
Connect the "+" lead of the transmitter to the
live line and the "-" lead to the neutral line. If
there is no load placed on the circuit, the
modulated signal from the transmitter will
simply go through the mains and return back to
the neutral side of the transmitter.
Dead circuits:
Connect the "+" lead of the transmitter to one
end of the of the circuit and the "-" lead to the
other end. Alternatively, connect the "+" lead to
end of the line and the "-" end to a grounded
terminal.

15 16
2.3 Examples of Typical Application
Take a 15-20ft piece of multi-core shielded cable with a
diameter of about 1.5mm and attach the cable to a wall.
Don't connect the cable to any power source. Make sure
the wall is accessible from both sides.Create a break in
one of the core wires about 5 ft. from the end and connect
it to the positive (+) end of the transmitter and the negative
(-) end of the transmitter to a suitable ground.Connect all
the other core wires not broken to the ground as well.
See figure 2-2 for a connecting example.
Turn on the transmitter. Set the transmitter power and
code if necessary by pressing the level select or code
select buttons. Press START/STOP on the transmitter to
start transmitting the signal through the cable. Move to
the opposite side of the wall and turn on the receiver.
Move the tip along the wall following the path of the cable
toward the break. The receiver the should produce a tone
to indicate it is receiving the signal from the transmitter.
As the tip of the receiver passes the break in the cable,
the tone should stop, indicating the receiver is no longer
receiving the signal from the transmitter.This will indicate
where the break in the cable is.
To further verify the precise position of the break,
press the manual button on the receiver and set the
sensitivity to its lowest setting while still receiving a signal
and move the tip along the cable again until it loses the
signal. This will give you a more precise location of where
the breakage is.
1.Make sure the
ground is properly
installed before
measurement.
2. Adjust the
transmitting power
depending on the
depth of the cable
in the wall or the type
of cable being used.
To help, mark the
position of the break
on the opposite side
of the wall when
testing at the lowest
sensitivity receivable
in manual mode.

3.1.1 Open Circuit
Detecting interruptions in in-wall/buried lines.
Find/track lines, sockets, junction boxes, switches, etc.
in home installations.
Detecting breaks and obstructions in metal pipes
When using the meter in this manner, ensure
the grounding wire is connected properly
beforehand.
1. Open circuit testing is suitable for finding
sockets and switches in dead equipment.
2. Tracking depth depends on the material
the line is inside.Typically the meter is
capable of tracking lines at a depth <2m
(~6.5ft). The ground terminal of a socket/
outlet can be used and connected to the "-"
side of the transmitter.
3. USING THE METER Must be a dead circuit
Neutral and ground lines must be correctly connected
and operational.
Connect the "+" end of the transmitter to the hot line and
the "-" end to the ground like in fig. 3-1-2.
1. Check to make sure ground is working properly.
2. For one-pole operation in this configuration,
adjacent circuits can be tracked (the fuse must be
removed first).
3.If the supply cable fed with the signals via the
transmitter is located ,e.g.directly in parallel to
other conductors(e.g.cable groove o duct),or if
these conductors are crossed ,the signals are also
input into the other conductors.
4. While tracking, the closer the receiver is to the line
being tracked, the stronger the signal will be
displayed.
5. Adjust the transmitter level to compensate for
differing detection depths.
3.1.2 Track and find connected lines/sockets.
17 18
3.1 One-pole Application

19 20
Must be a dead circuit
3.1.3 Finding interruptions
Connect adjacent lines to an auxiliary ground like in
fig. 3-1-3
Connect the "+" lead of the transmitter to the line under
test and the "-" lead to an aux.ground. like in fig. 3-1-3.
1. Ensure the ground is connected properly.
2. The transition resistance of the interruption must be higher
than 100kΩ.
3. When tracking interruptions on multi-line cables, all other
lines inside the cable's casing/conduit need to be grounded.
If not, the transmitter's signal might bleed into other
conductors and throw off the reading from the receiver.The
tracking depth for shielded or multi-line cables may differ
due to the lines wrapping around each other.
1. The auxiliary ground connected to the "-" side of the
transmitter can be the included grounded rod, the ground
line of a grounded socket, or any other apparatus that is
properly grounded.
2. The point at which the signal received by the receiver drops
abruptly will be the location of the interruption.
3. Adjust the transmitter level to compensate for differing
detection depths.
4. In manual mode, the proper sensitivity setting is crucial to
locating the interruption.
3.1.4 Locating interruptions using two transmitters
When using the transmitter to locate an interruption in a
line, depending on the conditions, finding the interruption
can be difficult to pinpoint precisely. This problem can be
overcome with the use of two transmitters; one connected
at each end of the line and each set to a different code.
CANNOT be a live circuit.
All parallel lines not used
need to be connected to
an auxiliary ground.
Connect transmitters to
opposite sides of the line
as in fig. 3-1-4.
If the transmitters are connected as
in fig. 3-1-4, the receiver will pick up
one signal on the left side of the
break and the other signal on the
right side of the break.If the receiver
is above the break, no code will be
displayed due to overlapping
signals.
Preconditions:
1. Adjust the
transmitter level to
compensate for
differing detection
depths.
2. In manual mode, the
proper sensitivity
setting is crucial to
locating the
interruption.

21 22
1. Ensure the ground is connected properly.
2. The transition resistance of the interruption must be higher
than 100kΩ.
3. When tracking interruptions on multi-line cables, all other
lines inside the cable's casing/conduit need to be grounded.
If not, the transmitter's signal might bleed into other
conductors and throw off reading from the receiver. The
tracking depth for shielded or multi-line cables may differ
due to the lines wrapping around each other.
4. The auxiliary ground connected to the "-" side of the
transmitter can be the included grounded rod, the ground
line of a grounded socket, or any other apparatus that is
properly grounded.
3.1.5 Tracking interruptions in an electrical floor
heater
CANNOT be a live circuit
All parallel lines not used need to be connected to an
auxiliary ground
Connect transmitters to opposite sides of the line as in
fig. 3-1-5b
1. If there's a shield mat
above the heating wires, a
ground connection might
not exist. If necessary,
separate the mat from the
ground connection.
2. Ensure the ground is
connected properly. There
should be considerable
distance between the
ground terminal of the
transmitter and the target
line. If not, the interruption
might be difficult to
precisely locate.
Preconditions:
1. The point at which the signal
received by the receiver
drops abruptly will be the
location of the interruption.
2. Adjust the transmitter level
to compensate for differing
detection depths.
3. In manual mode, the proper
sensitivity setting is crucial
to locating the interruption.
4. For use with a single
transmitter, see fig. 3-1-5a.
For use with 2 transmitters,
see fig. 3-1-5b.
3.1.6 Detecting narrowing or blockage within a
nonmetallic pipeline
Pipeline must be made of a non-conductive material.
Pipeline cannot be charged
Connect transmitter to a metal tube/flexible conduit
(inserted into the pipeline) and to an auxiliary ground
as shown in fig. 3-1-6.
1. If there is current
present in the pipeline,
disconnect power and
properly ground the
pipeline so no current is
present when power is
turned on.
2. The ground of the
transmitter needs to be
far enough away from
the pipeline in order for
the signal to be clearly
received by the receiver.
Preconditions:

23 24
3.1.7 Tracking in laid metal pipelines
The pipeline needs to be metallic (such as galvanized
steel)
The pipeline should not be grounded and there should
be a relatively high resistance
between the pipeline and the soil/wall, otherwise the
detection distance will be fairly short.
Make sure to properly ground the negative end of the
transmitter.
Connect the positive end of the transmitter to the
pipeline using a connecting line.
Turn off all power
to connected equipment
to avoid injury or
damage to the meter.
1. If you don't have a metal tube/flexible conduit, you can use
a non-conductive tube with a metal wire of at least 1.5mm in
diameter in the tube to carry the signal from the transmitter.
2. When using the receiver, the stronger the signal received,
the closer the transmitter is to the conductive tube/wire.
3. During detection, when the signal suddenly attenuates, this
position is where the blockage is at.
4. Adjust the transmitter power to get an adequate signal
depending on the detection environment. You can also
put the receiver into manual mode and adjust its sensitivity
to pick up the signal from the transmitter adequately.
Preconditions:
1. The ground of the transmitter needs to be far enough away
from the pipeline in order for the signal to be clearly
received by the receiver.
2. Adjust the transmitter power to get an adequate signal
depending on the detection environment.
3. When using the receiver, the stronger the signal received,
the closer the transmitter is to the conductive tube/wire.
4. You can put the receiver into manual mode and adjust its
sensitivity to pick up the signal from the transmitter
adequately.
The detection of laid tap water pipe and heating pipe
is shown in Fig.3-1-7a and Fig.3-1-7b respectively:

25 26
The circuit CANNOT be charged
Connect the transmitter as shown in fig. 3-1-9
Make sure to properly ground the negative end of the
transmitter.
Put the transmitter into automatic mode.
Use the displayed signal strength to track the circuit.
1. The ground of the transmitter needs to be far enough
away from the pipeline in order for the signal to be clearly
received by the receiver.
2. Adjust the transmitter power to get an adequate signal
depending on the detection environment.
3. When using the receiver, the stronger the signal received,
the closer the transmitter is to the circuit.
3.1.8 Detecting power supply circuitry on the
same floor
1. Turn off the main switch on the distribution board.
2. Disconnect the neutral wire in the distribution box from
the neutral wires of other floors.
3. Connect the transmitter as shown in fig. 3-1-8
1. Make sure to properly ground the negative end of the
transmitter. The ground of the transmitter needs to be far
enough away from the pipeline in order for the signal to be
clearly received by the receiver.
2. Adjust the transmitter power to get an adequate signal
depending on the detection environment.
3. When using the receiver, the stronger the signal received,
the closer the transmitter is to the conductive tube/wire.
4. You can put the receiver into manual mode and adjust its
sensitivity to pick up the signal from the transmitter
adequately.
When detecting the power supply circuit on the same
floor,please take the following steps:
Preconditions:
3.1.9 Tracking underground circuits

27 28
3.2.2 Find correct breaker
Connect the transmitter to a socket connected to the
breaker panel under test and adjust the transmitter
power to a suitable level.
Turn off all switches at the breaker box
Connect the transmitter to the test socket as in fig. 3-2-2
Please observe
standard safety
precautions when
connecting the
transmitter to a
charged circuit.
1. Correctly identifying proper breakers is greatly
influenced by the wiring of the breaker box. In order to
more precisely find the correct breaker, one can remove
the cover from the breaker panel and search for the
feeder line to the breaker.
2. During the identifying process, the breaker with the
strongest and most stable signal will be the target
breaker. Due to potential coupling of signals, the
receiver may detect signals in other breakers, but the
strength of those signals will be relatively weaker.
1. During detection, it's best to put the tip of the receiver
directly into the fuse box to achieve the best results.
2. Adjust the transmitter power to get an adequate signal
depending on the detection environment.
3.2.1 Closed circuits
For use on charged or uncharged circuits
For uncharged circuits, the transmitter only sends signals
to be received by the receiver.For charged circuits, the
transmitter not only sends signals for the receiver, but
also measures the voltage of the connected circuit.
Please observe
standard safety
precautions when
connecting the
transmitter
to a charged circuit.
1. The maximum input voltage of the transmitter is 400V AC/DC
2. The closed circuit application works for detecting
connected sockets, switches, fuses, etc.
3. Detection depth depends on the type of circuit, cable, usage
of cable/circuit, etc. Normal operating depth is <0.5m.
4. Adjust the transmitter power to get an adequate signal
depending on the detection environment.
3.2 Dual-pole Applications

29 30
3.2.3 Finding a short in a circuit
CANNOT be a live circuit
Connect the transmitter as in fig. 3-2-3.
Follow the example for measurement as shown.
1. Cut off power to make sure there is no current in the
circuit to be measured beforehand.
2. When attempting to locate shorts in insulated wires/cables,
detection depth may vary. Detection of shorts may only be
possible in circuits with an impedance of less than 20Ω.
1. If the impedance of the short circuit is more than 20Ω, switch
to finding a breakage in the circuit. Use a relatively large
current to temporally bridge the short or break it to get the
best results.
2. If the signal suddenly attenuates while searching using the
receiver, this indicates where the short may be.
3. Adjust the transmitter power to get an adequate signal
depending on the detection environment.
4. You can put the receiver into manual mode and adjust its
sensitivity to pick up the signal from the transmitter ad
equately.
Preconditions:
CANNOT be a live circuit
Connect the transmitter as shown in fig. 3-2-4
The distance between the laid line and the connecting
line to the transmitter needs to be greater than 2-2.5m.
Follow the example as shown
3.2.4 Detecting deeply laid circuits
In dual pole applications, if the measured line is made of
multiple wires within the same cable (i.e. standard power
cable), the detection depth can be very limited due to the
short distance between feeding line and loop line causes
a distorted magnetic field. If a separate, longer loop line
is used to connect the transmitter to the ends of the of the
tested line, this problem can be worked around because
the extra line should help diffuse the magnetic field.The
distance between the extra line and the line to be
measured should be greater than 2m (~6.5ft).
Preconditions:

31 32
1. In this application, the humidity or material of the wall in
comparison to the depth of the line is insignificant.
2. When using the receiver, the stronger the signal received,
the closer the transmitter is to the cable.
3. Adjust the transmitter power to get an adequate signal
depending on the detection environment.
4. You can put the receiver into manual mode and adjust its
sensitivity to pick up the signal from the transmitter
adequately.
3.2.5 Classifying bundled circuits
CANNOT be live circuits.
Twist ends of core wires together.
Connect transmitter as shown in fig. 3-2-5
Follow the measurement example in the figure.
Preconditions:
1. If the cable is powered, turn off power first before
connecting transmitter.
2. The ends of core wires must be connected together and
conduct with each other.
3. If only one transmitter is available, perform multiple
measurements by switching between core wires.
1. When switching the connection between core wires, switch
codes to better distinguish between them.
2. Adjust the transmitter power to get an adequate signal
depending on the detection environment.
3. Add on additional transmitters to use different signal codes
simultaneously.
3.3 Increasing the effective detecting radius in
charged circuits
When connecting the transmitter to a live socket using
the live and neutral lines, the signals are sent on parallel
lines, so the twisting of circuits can cause the two signal
to counteract each other, leading to the effective detection
radius being less than 0.5m. In order to reduce this effect,
connect the side of the transmitter as shown in
figure 3-3-2, where the neutral line is connected to a
separate cable to increase that effective detection radius
to as much as 2.5m when connected as shown in the figure.
positive
Please observe standard
safety precautions when
connecting the transmitter
to a charged circuit.
Keep in mind the distance
between the transmitter and
circuit to be detected in
order to get a clear signal
on the receiver.

33 34
1. The transmitter only indicates the existence of an AC
signal in the circuit being tested. The actual voltage
present can only be determined using a connected
transmitter.
2. When detecting over multiple lines in close proximity,
connect each line to the power signal separately.
1. You do not need the transmitter to perform non-contact
voltage detection. The transmitter can perform voltage
level tests during NCV detection, but does not affect NCV
detection.
2. The signal strength displayed and the frequency of the tone
from the receiver are related to the voltage present and the
distance from the circuit. The higher the voltage and the
shorter the distance to the circuit, the greater the displayed
signal and the higher the frequency of the tone produced
1. When using the receiver,
the stronger the signal
received, the closer the
transmitter is to the cable.
2. Adjust the transmitter
power to get an adequate
signal depending on the
detection environment.
3. You can put the receiver
into manual mode and
adjust its sensitivity to
pick up the signal from the
transmitter adequately.
3.4 Non-Contact Voltage detection
Must be a charged circuit.
Follow the example as shown in fig. 3-4.
Set the receiver to NCV mode to begin detection
Preconditions:

35 36
4. Other Functions
4.1 Voltmeter functionality on the transmitter
Using the test lead jacks on the transmitter, you can
connect test leads to a circuit and measure its AC voltage.
As long as the voltage present is larger than 12V, the
display will show the measured voltage on the lower left
corner. The voltage range of the transmitter is 12-400V
DC/AC (AC: 50-60Hz)
Press the work light button on the receiver to light up
the area directly in front of the receiver. Press the button
again to turn off the work light.
4.2 Work light function
4.3 Back light function
4.4 Audio mute
Press the back light button on either the transmitter or
receiver to light up the display to see in darker
environments.Press the button again to turn off the back
light.
Hold the mute button on either the transmitter or receiver
to mute the audible beeps of the meter (button presses/
signal strength, etc.) Hold the button again to return the
meter'saudio to normal.
4.5 Auto power off function
If the receiver is not used for about 10 minutes, it will
automatically turn itself off. Press the power button to
turn it back on.
Note: transmitter has no auto off function
5. Specifications
5.1 Transmitter Specifications
Output signal
Voltage test range
125kHz
DC 12~400V±2.5%;AC 12~400V(50~60Hz)±2.5%
LCD,with function display and column chart
Display
Max.input voltage Max.400 AC/DC
Overload protection CAT III 300V
Pollution degree 2
Power supply 1x9V.IEC 6LR61
About 31mA
MIN current
MAX current
Power
consumption About 115mA
Fuse F 0.5A 500V,6.3x32mm
Working 0°C to 4
80%(non-condensation)
0°C,with maximun relative humidity of
In storage -20°C to 6
80%(non-condensation)
0°C,with maximun relative humidity of
Environmental
Temperature
Aititude Max.2000m
Dimensions(HxWxD) 190mmx89mmx42.5mm
Without battery
With battery
About 360g
About 420g
Weight