Unit UT385 Manuel utilisateur

Laser Power

Meter

User Manual

P/N:110401109388X

Thank you for purchasing this brand new product. In order to use this product safely and correctly,

please read this manual thoroughly, especially the safety notes.

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

preferably close to the device, for future reference.

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 damages caused by accident,

negligence, misuse, 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.

UT 385 User Manual

Preface

Limited Warranty and Liability

1. INTRODUCTION

UT385 laser power meter is stable, safe and reliable tool for applications such as

laboratories, laser device manufacturers and industrial enterprises.

2. FEATURES

Precise laser sensor

Split design with retractable spring wire, which is easy to operate

LCD screen for clear readings

Data storage function

Selectable and customizable wavelengths

Threshold alarm function

Low power consumption

3. ACCESSORIES

Open the package and check if any item below is missing or damaged.

Device ---------------------------------- 1

9V battery ----------------------------- 1

English manual ---------------------- 1

USB cable ----------------------------- 1

UT 385 User Manual UT 385 User Manual

1. Introduction ----------------------------------------------------------------------------- 2

2. Features --------------------------------------------------------------------------------- 2

3. Accessories ----------------------------------------------------------------------------- 2

4. Safety instruction ---------------------------------------------------------------------- 3

5. Structure description ------------------------------------------------------------------ 4

6. Lcd functions ---------------------------------------------------------------------------- 5

7. Buttons description -------------------------------------------------------------------- 7

8. Operation instruction ------------------------------------------------------------------ 9

9. Operation steps and notices ------------------------------------------------------- 14

10. Parameters and specifications ---------------------------------------------------- 15

11. Online measurement ----------------------------------------------------------------- 17

12. Battery replacement ----------------------------------------------------------------- 18

Table of Contents

4. SAFETY INSTRUCTION

1) Never stare into the laser beam directly or expose eyes to the reflected laser light, otherwise

eyesight impairment or even blindness may occur. Especially the high-frequency laser, such as

UV-light, is invisible by naked eyes and requires extra attention.

2) No laser over 40mW is allowed to input, the sensor may be damaged by high-power laser.

3) To avoid inaccurate measurement, please keep the sensor illuminated surface clean and free

from scratch and contamination.

4) Check the device and accessories for any damage or abnormality before usage. Do not operate

the product if you find it damaged obviously, no display or you suspect it is faulty.

5) Operating instruction must be followed during measurement.

6) Do not open the meter shell or change the internal circuit to avoid damage to the meter.

7) Users should change the battery in time when the icon blinks on LCD. Remove the batteries

during long-time storage to avoid battery leakage.

8) Do not use or store the meter in the environment of high temperature, high humidity, flammable,

explosive or intense electromagnetic.

9) Clean the meter shell with a soft damp cloth and neutral detergent. Do not use abrasive or solvents,

to protect the meter from corrosion.

5. STRUCTURE DESCRIPTION

① Device

② Buttons

③ LCD screen

④ USB interface

⑤ Sensor illuminated window (laser entrance)

⑥ Sensor protection cover

⑦ Probe handle

⑧ Probe handle holder

⑨ Spring wire

UT 385 User Manual UT 385 User Manual

6. LCD FUNCTIONS Maximum measurement

Minimum measurement

Average measurement

Secondary display area for maximum,

minimum, average value and so on

Data storage number

Data storage icon

Wavelength unit nm

Wavelength value

Wavelength icon

Customized wavelength number 1

Customized wavelength number 2

Date and time

Lower limit icon

Main display area

Upper limit icon

Audio alarm

Data hold

Relative value

Auto range

USB connection

Auto power off

Battery status

Unit μW (main display area)

Unit mW (main display area)

Decibel unit dBm (main display area)

Unit μW (secondary display area)

Unit mW (secondary display area)

Unit dBm (secondary display area)

Simulation bar

Delete data

Obtain relative value

UT 385 User Manual UT 385 User Manual

7. BUTTONS DESCRIPTION

1) : Power on/off

In power off status, long press the button 1s to power on

In power on status, long press it 1s to turn on/off auto power off, short press to power off.

2) HOLD/ : HOLD/Backlight

Short press it to enter/exit HOLD mode. Long press it to turn on/off the backlight.

3) MODE: MAX/MIN/AVG modes

Short press it to switch between Maximum/Minimum/Average modes, and long press it to exit.

4) REL: Relative Value

Long press it to obtain relative value. Short press it to enter/exit the relative value mode.

5) : Settings

Short press it to enter setting mode. Short press or to switch the setting item according to the

codes below.

S.dt: set date and time

S.dlt: set lower limit threshold

S.ult: set upper limit threshold

rSt?: restore settings

dEL?: delete saved data

Short press button to exit the setting mode.

Short press button to enter the according item’s setting.

6) : Up/Audio Alarm

In normal measurement mode, long press the button to turn on/off audio alarm, and short press it to

switch between upper/lower/upper and lower limit test modes or exit.

In setting mode, short press it to switch setting item or increase setting value.

Note: only upper limit will be detected when the icon displays, and only lower limit will be

detected when the icon displays. Both the icons will be displayed when upper and lower

limit test modes are turned on simultaneously.

7) : Switch units and Auto Range

Short press the button to switch between μw/mW/dBm/auto range modes.

Note: the icon displays during auto range mode, otherwise it is in manual range.

8) : Review/Return

Short press the button to enter storage data review mode or return.

UT 385 User Manual UT 385 User Manual

9) : Save/Down

In normal measurement mode, long press the button to save the current measured value, the icon

will blink if 199 groups of data storage have been fulfilled. Short press it to check the date and

time. In setting mode, short press the button to switch setting item or decrease setting value.

10) : Wavelength/confirm

In normal measurement mode, short press the button to switch laser wavelength, and long press it

to enter wavelength setting.

In date and time setting, short press this button to switch the digit position.

In setting mode, short press this button to confirm selection or enter the item.

8. OPERATION INSTRUCTION

1) Date and Time Setting

Short press to enter setting interface, switch to S.dt and short press to enter date and time

setting interface as figure below:

Short press and button to adjust setting value (long press to rapidly adjust). Short press to

move the cursor to the left, while short press to move the cursor to the right.

After the setting is done, short press button, the blinking of the icon means the date and time

setting is saved, then short press to exit.

2) Upper/lower Limit Threshold Setting

Short press to enter setting interface, select S.dlt and short press to enter lower limit threshold

setting interface as figure below:

In setting interface, select S.ult and short press to enter upper limit threshold setting interface as

figure below:

UT 385 User Manual UT 385 User Manual

Short press and button to adjust setting value (long press to rapidly adjust).

After the setting is done, short press the button to confirm and save the setting, or short press

the button to exit and not to save.

3) Relative Value Mode

Long press REL button to set current measured value as relative value and displays it in the

secondary display area, as shown in figure:

Short press REL button can enter relative value mode. It will subtract the relative value from the

actual measuring value, the difference will be displayed in main display area as shown in figure:

4) Customized Wavelength Setting

Long press to enter customized wavelength setting interface, 2 customized wavelength can be

save as and , which can be switched by and button.

Short press to enter wavelength setting mode, the icon λ on LCD will blink as figure below:

Short press or long press or button to set customized wavelength.

Short press to save the current setting wavelength, the showing of icon means the wavelength

setting is saved, then short press to exit.

UT 385 User Manual UT 385 User Manual

5) Review or Delete Storage Value

Short press button to enter data review mode as shown in figure.

For example, the current storage data is:

A.The storage serial number is 2.

B.The measured data is 0.1μW.

C.The wavelength is 650nm.

D.The measured time is 09:04 (24-hour) 2nd December, 2019

Short press and to switch storage data. Short press button to select specified data as

figure below:

Then short press button again to delete specified data, short press to cancel deleting.

After setting, short press button to exit.

9. OPERATION STEPS AND NOTICES

1) Power on the meter.

2) Aim the laser at the middle illuminated surface of the sensor and keep the laser angle with the

illuminated surface 90°, at this point, the reading is the measured laser power. to be

3) According to the laser type, in case the measured laser output will be influenced by reflected

light of illuminated surface, please twist the angle a little bit to avoid the direct reflection on the

laser port.

4) In weak laser measurement (<1nW), in order to avoid the affection of the light interference such

as ambient light, it should be operated in a dark room.

UT 385 User Manual UT 385 User Manual

to be

10. PARAMETERS AND SPECIFICATIONS

1) Main Parameters

Function

Laser

power

Measured

range

Accuracy

Measured

range

Laser

wavelength

range

Laser

wavelength

options

Range Resolution Accuracy Remarks

The meter

calibrates

by the

wavelength

of 633nm

Formula:dBm=10*lg (mW)

2) General Specifications

LCD display: 4-digit LCD display, maximum display value: 3999

Over-range indication: OL will be displayed when the laser power exceeds the range of 39.99mW.

MAX/MIN/AVG mode: maximum/minimum/average value and the icon of MAX/MIN/AVG will be

displayed in MAX/MIN/AVG mode.

Data hold function: the icon of HOLD will be displayed during data hold.

Backlight: backlight can be turned on/off manually.

Auto power off: the meter will automatically shut down if no action was detected out within

5 minutes and auto power off can be turned off.

Sampling rate: 0.5s

Data storage: maximum 199 sets of data can be saved.

Impact resistance: 1m drop proof

Battery requirement: 1*9V battery, new battery should be replaced in time if the low battery

icon shows on LCD.

Product size: 198*104*35mm

Weight: 319g (includes battery)

UT 385 User Manual UT 385 User Manual

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