Uni-T UT659D Manual de Usario

Uni-T Equipo de medición UT659D

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P/N:110401108963X

Preface

Thank you for purchasing the new LED tester. In order to use this product

safely and correctly, please read this manual thoroughly, especially the

Safety Warning part.

After reading this manual, it is recommended to keep the manual at an

easily accessible place, preferably close to the device, for future reference.

Limited Warranty and Liability

Uni-Trend guarantees that the product is free from any defect in material

and workmanship within one year from the purchase date. This warranty

does not apply to caused by accident, negligence, misuse, damage

modification, contamination or improper handling. The dealer shall not be

entitled to give any other warranty on behalf of Uni-Trend. If you need

warranty service within the warranty period, please contact your seller

directly.

Uni-Trend will not be responsible for any special, indirect, incidental or

subsequent damage or loss caused by using this device.

I. Safety Warning

This manual contains warning information and safety regulations. Please

observe them strictly to ensure the safety of the user and tester.

Caution:

1. Please read and understand the contents of the manual before using

the tester.

2. Please be sure to understand the safety aspects of the manual in detail.

3. Uni-Trend is not responsible for any damage caused by improper use

or violation of the safety regulations in the manual.

4. This manual is subject to change without prior notice.

Safety symbol “ ” has three meanings in the manual. Users should

pay special attention to the operation with the symbol when reading.

Danger----- identifies conditions and actions that are likely to pose

serious or fatal hazards.

Warning---- identifies conditions and actions that may pose serious

or fatal hazards.

Caution----- identifies conditions and actions that may pose minor

injury or damage the tester.

This tester is a power output device. Please do not use it to test

live circuits.

This tester can output up to 30mA current/300V voltage. Please

do not touch both ends of the output test leads.

Danger

This tester is a power output device. Do not use it to test circuits

connected to vulnerable components, such as CPU on the board.

When the tester is testing at 30mA/300V, if the voltage rises but

there is no LED lit, please discontinue the test.

Warning

Do not look directly at the high-brightness LED light source for a

long time.

Do not light high-power LED lamps for a long time to avoid

overheating of the tester.

If the tester is not used for a long time, please unplug the power.

Caution

The meaning of the symbols associated with this tester:

Equipment protected throughout by DOUBLE INSULATION

or REINFORCED INSULATION

Danger, Warning or Caution

Caution, possibility of electric shock

Please read the instructions before use.

II. Features

The UT659A/UT659D LED tester supports full voltage (85V~265V, 50Hz

/60Hz) input, which can be used after powering it up for 1 minute to ensure

stable voltage output. When performing a LED test at 30mA/300V, the

LED polarity can be automatically identified (short-circuit the positive and

negative ends of the test leads continuously for about 5s to switch between

automatic identification of polarity and non-automatic identification of

polarity), and the output voltage is adaptively adjusted according to the

forward voltage drop of the tested LED. The internal chip of the tester has

over temperature, overcurrent and overload protection functions.

1. UT659A

1) When the toggle switch is placed in the 30mA/300V position, the LCD

displays the output voltage and output current.

2) When the toggle switch is placed in the position for circuit continuity

test, the LCD displays the resistance value or OL.

2. UT659D

1) When the toggle switch is placed in the 2mA/24V position for single

LED lamp bead test, automatic identification of LED polarity is not

performed.

2) The LCD only displays the output voltage.

III. Tester Appearance and Main Accessory

UT659A UT659D

Input socket

LCD

Toggle switch

Output ports

Input power cord

Test lead slots

IV. Specifications

1. Technical indicators

30mA/300V DC 320V

DC 5V

33mA

50mA

±2%±5 digit

30mA/300V

2mA/24V

DC 320V

DC 24V

33mA

2mA

±2%±5 digit

UT659D

UT659A

Input voltage

AC 85V~265V, 50Hz/60Hz

Function

Output

voltage

(MAX)

Output

current

(MAX)

Voltage

display

accuracy

Current

display

accuracy

Resistance

display

accuracy

Function Output voltage

(MAX)

Output current

(MAX)

Voltage display

accuracy

2. Measurement Range (Function)

1) 30mA/300V:

Tests the TV backlight, LED lamp and other series circuit of multiple

lamp beads with automatic identification of LED polarity (Note: LED

Short-circuit the positive and negative ends of the test leads continuously

for about 5s to switch between automatic identification of polarity and

non-automatic identification of polarity; in the automatic identification

of polarity mode, when the backward impedance for the series circuit

of multiple LED lamp beads is too large, which is similar to open circuit

for the output of DC 300V, manually change the polarity of the test

leads for testing).

Do not discard the tester or its accessories as unsorted

municipal waste. Please dispose properly in accordance

with local regulations.

2) 2mA/24V:

Tests a single LED lamp bead without automatic identification of LED

polarity.

3) :

Tests circuit continuity.

3. General Specifications

1) Application Standard

CAT II 300V

2) Working Environment

Operating temperature: 32°F~104°F (0°C~40°C)

Relative humidity: 80%RH≤

Altitude: 2000 meters≤

3) Storage Conditions

Storage temperature: 14°F~122°F (-10°C~50°C)

Relative humidity: 75% RH≤

4) Product Size

56mm*150mm*42mm

5) Product Weight

About 170g

6) Accessories

Power cord ------------- 1 pc

Test leads --------------- 1 pair

User manual ------------1 pc

V. Testing the TV Backlight, LED Lamp and

Other Series Circuit of Multiple LED Lamp

Beads (UT659A & UT659D)

1. Automatic Identification of Polarity

1) Place the toggle switch in the 30mA/300V position and plug in the

power cord. The tester defaults to automatic identification of polarity

and the “AUTO” symbol on the LCD lights up. Wait for 1 minute to

ensure stable voltage output.

2) Connect the output test leads with both ends of the circuit under test

respectively.

3) The tester automatically identifies the polarity of the circuit and adjusts

the positive and negative poles of the output voltage. The multiple LED

lamp beads are lit gradually. If a LED lamp bead is not lit, it is damaged.

4) When the positive and negative ends of the test leads are connected

with both ends of the circuit under test in reverse and the backward

impedance of the circuit is as large as approximately open circuit, the

test output has no response. In this case, manually change the polarity

of the test leads for testing.

5) If the test output still has no response after step 4), the circuit under

test is broken.

2. Non-Automatic Identification of Polarity

1) In the automatic identification of polarity mode, short-circuit the positive

and negative ends of the test leads continuously for about 5s, and the

“AUTO” symbol on the LCD screen will go out, indicating switching to

the non-automatic identification of polarity.

2) Connect the positive end of the test leads with the positive pole of the

circuit under test, and negative end with the negative pole.

3) The multiple LED lamp beads are lit gradually. If a LED lamp bead is

not lit, it is damaged.

Caution:

VI. Single LED Lamp Bead Test (UT659D)

1. Place the toggle switch in the 2mA/24V position.

2. Connect the output test leads with both ends of the LED lamp bead

under test respectively.

3. If the polarity connection is correct and the LED lamp bead is lit, the

LED is normal.

4. If the LED lamp bead is not lit, change the polarity of the test leads for

testing. If the LED lamp bead is still not lit, the LED is damaged; if the

LED lamp bead is lit, the LED is normal (the previous polarity connection

is incorrect).

VII. Continuity Test (UT659A)

1. Place the toggle switch in the position.

2. Connect the output test leads with both ends of the circuit under test

respectively.

3. When the circuit resistance is 100Ω, the LCD displays the resistance ≤

value, and when the resistance value is ≤30Ω, the buzzer beeps; when

the circuit resistance is >100Ω, the LCD displays OL.

VIII. Maintenance and Repair

1. Cleaning the Casing

Clean the casing of the tester gently with a dry cloth. Do not use alcohol

or solvent as it is corrosive to the casing, especially the LCD. Please

prevent the tester from being wet.

2. Repair

Please contact your seller directly if the following issues occur.

1) The casing of the tester is broken or the tester is damaged.

2) The LCD displays abnormally.

3) Unexpected test data occur under normal use.

4) The toggle switch does not function normally.

In the automatic identification of polarity mode, when the tested circuit is

connected in parallel with a component or circuit with a lower forward

voltage drop, the polarity judgment will be misled. At this time, switch to

the non-automatic identification of polarity mode for testing.

Especificaciones del producto

Marca:	Uni-T
Categoría:	Equipo de medición
Modelo:	UT659D

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