UPRtek MK350S PREMIUM User Manual

uSPECTRUM PC Software

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uFLICKER PC Software

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uSPECTRUM APP

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Purchase Date：

V1.0

MK350S PREMIUM

手持式分光光譜計・Spectrometer・ハンディタイプ分光光度計

使用說明書

User Manual

簡易取扱説明書

Contents

Contents

Introduction

1

1.1 Features

1.2 Package Contents

1.3 Product Description

1.4 Annual Product Calibration

1.5 Product Notes and Precautions

How to use this product

2

2.1 Preparation before Using

2.2 Taking a Measurement

2.3 Setup Items in OPTION

.........................................................................................

..........................................................................

.........................................................................

Home Screen (Page 1)

3.1 BASIC

3.2 SPECTRUM

3.3 CIE 1931

3.4 CIE 1976

3.5 CRI

3.6 TM-30

3.7 COMPARE

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1

2

3

4

5

6

11

13

17

21

22

23

24

25

26

Home Screen (Page 3)

5

5.1 CHECKER

5.2 BIN

5.3 BROWSER

Miscellaneous

6

6.1 Bracket

6.2 SD card

6.3 Connecting with Mobile APP

6.4 Connecting with uSPECTRUM

6.5 Connecting with uFLICKER

6.6 Troubleshooting

Specification

7

7.1 Specification

7.2 General Attributes

Appendix

8

8.1 Q&A

8.2 Product Warranty

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49

51

55

56

57

58

59

61

62

63

67

72

73

Home Screen (Page 2)

4

4.1 FLICKER

4.2 FREQUENCY

4.3 FLICKER RISK

4.4 BLUE HAZARD

4.5 TRANSMIT

4.6 LUX. G

4.7 LOG

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33

35

37

39

41

43

44

1.1 Features

1.2 Packing Contents

MK350S Premium handheld Spectrometer Keeps the excellent designs and mul-funconal
user friendly operaon mode. Beside, it enhances the abilibty of LUX dynamic range from
100k lx to 150k lx. Auto dark calibraon is embedded to reduce the noise interference from
each temperature and lighng environment changes. Also, Cosine receiving surface is
opmized to conform with both JIS AA and DIN B Illuminance Meter class. Overall, it’s the
professional instrument with the cerficated accuracy and measuring speed.

Light source measuring funcons supersede the last generaon model (MK350S) with
outstanding performance. Users can choose from more than 40 light measurement units
(CCT, LUX, CRI, CIE1976, CIE1931,PPFD & PFD, CQS, Duv, LambdaP, S/P rao, TLCI, GAI and
others) to create their customized list. For further analysis and research, MK350S Premium
Spectrometer added "Flicker and Blue light Hazard" assessment funcons which can make
you measure light more producvely.

Please ensure the following are included in package of this product: In case of any flaw
and/or loss please call the dealer or this Company for help.

Case

Power Adaptor

PC software uSPECTRUM/ uFLICKER.)

Protection Bag Screen Wiper

LOCK

GB

MK350S Premium

Spectrometer

USB Cable

( It is used to connect with

Cap Strap

Lithium Battery

Neck Strap

- 1 -

SD Card

Warranty Card WiFi Wing

Tripod / Stand Bracket

wireless remote control card

( It is used to connect with APP.)

- 2 -

User Manual

1.3 Appearance Introduction

Opcal Sensor

Flicker Sensor

Video Cam Lens

1.4 Annual Product Calibration

As the product is a high-precision instrument, please use it cauously. To ensure the
accuracy of measurements, annual calibraon is recommended. Please consult the agent or
the customer service department for the calibraon service.

Measure Key

4.3" touch panelStrap Hole

Power buon

SD Card Slot

Reset Key
Baery Recharge
LED

Power On LED

Mini USB

Power Jack

Baery Cover

If the system crashes, please press the power key for 3 seconds to turn off the system.

1.
If the problem still can’t be fixed, please use a pin to press the reset key to turn off the system.

2.

- 3 -

- 4 -

1.5 Product Notes and Precautions

2.1 Preparing Before Use

MK350S Premium Spectrometer is a high-precision instrument. Please unpack with care.

1.

Any vibraon or collision may cause instrument damage. If the product doesn’t work
normally or needs repair, please don’t aempt any repairs. All repairs must be
performed by the authorized customer service agent.

Most LCD screens have a very small and inconsequenal defecve pixel rate (usually less

2.

than 0.1%). This results in occasional pinpoints of white or other colors but will not affect
the accuracy of measurements.

Please read the following precauons to avoid fire, excessive heat, chemical leakage and

Precautions / Warnings

explosion :

■

Do not disassemble or modify the baery.

■

Do not expose the baery to heat (fire) or water/moisture.

■

When disposing used/old baeries, wrap with insulaon tape to shield the baery from
electrical contact with metallic objects, which might ignite a fire or explosion.

■

If the unit is plugged into the power adapter and the baery seems to be overheang, or
if there is smoke or peculiar odors emanang from the unit, unplug immediately to avoid
the possibility of fire.

■

However, do not touch the cables if there is heat emanang from near the cables as
melted or deformed cables could expose wiring and result in burns or electric shock.

■

Do not use cloth or anything to wrap or cover the equipment while charging – this could
cause the unit to overheat, melng the casing or causing fire.

■

If the unit is accidently immersed in water, or if moisture has seeped inside, or metal
objects have dropped into the casing, immediately remove the baery to avoid fire or

electric shock.

■

Do not operate or store the baery in high-temperature environments-it will cause
baery leakage and/or shorten the life of the baery .

■

Do not use paint thinner, benzene or other organic solvents to clean the equipment –
this may damage the exterior finish or touch screen, and may even ignite fire.

Baery installaon

Charge the battery full for 6 hours before using it for the first time.

1.
To prevent power outage during using this product, please check whether the red light has

2.
turned off (fully charged) according to instructions given in next page item1. Once this product
is enabled keep an eye on indicator of balance of battery charge at upper right corner of
screen.
In case a battery goes exhausted soon after fully charged then its life cycle has ended. Please

3.
call your dealer for replacement with new one.
Time span your battery can last varies with its life cycle. Newly shipped battery after full charge

4.
may last around 5 hours.

Remove the back cover from underneath the MK350S

1

Premium by inserng your fingernail into the notch,
located below the end of the cover, and sliding your
nail along the underside of the edge to unhinge one
side - do the same for the other side.

Install the baery as shown with the correct

2

orientaon. The baery will install in only one
direcon – do not force the baery in.

Replace the back cover.

3

- 5 -

- 6 -

2.1 Preparing Before Use

2.1 Preparing Before Use

Baery charging

Connect charger to charging port of this product to start charging its baery.

1. Product in off mode: The Baery Recharge LED lights red during baery charging and
turns off aer it is fully charged.

2. Product in on mode: A flash symbol displays at upper right corner of screen of this
product during charging and disappears aer it is fully charged.

Install SD card

You may save measurement data in file of Excel (xls) format and image data (spectrum and
chromacity coordinates diagram) in format of (JPG) in SD card with capacity at 1GB or

more.

Insert SD card in direcon as indicated

※

Press to remove SD card

※

1

2

Strap installaon

Step1. Unscrew the strap.
Step2. Tie the strap to the strap hole of MK350S Premium.
Step3. Tie the strap to the sensor cover.
Step4. Screw the strap.

3

1

- 7 -

2

The SD card features a card latch design to prevent it from loosening You may feel that the SD

1.
card is stuck when it is inserted in or removed. In case it is like this, pull or push it a little harder
to get it in place or removed. To remove SD card: Press it as shown in step ①, pull it out after
it ejecting a little as shown in step ②.

4

- 8 -

2.1 Preparing Before Use

2.1 Preparing Before Use

Power on

Press the Power buon for 1 second and then release it.

When the power is on, the Power On LED will light the green indicator.
When the power is off, the green indicator will be off.

Dark calibraon

MK350S Premium will display splash screen and then the screen prompts with message for
dark calibraon.

1

“Do you want to do dark calibraon?” Please select “Yes” .

2

Aer the sensor cover is put on, please select “OK”.

3

When the screen shows “Dark calibraon finish.”, please press “OK” to

enter the main page.

Set up date and me

Set up date and me before taking any measurement.

1

Tap the “Flip Page”

corner to enter the
next page.

4

2

Tap the “Flip Page”

corner to enter the
next page.

5

3

Click “Opon” icon.

6

Press and hold power key for 1 second to power on this product.

1.
Press and hold power key for 3 seconds to power it off.

2.
Please run dark calibration after each power on of this product.

3.

- 9 -

Press“Date”and“Time”
for its sengs.

Once date is set, press

Yes to exit to setup

opon page.

- 10 -

Once me is set, press

Yes to exit to setup

opon page.

2.2 Basic Measurement

2.2 Basic Measuremen

Measurement

Click “BASIC” mode to enter measurement page.

Point opcal sensor to light

1

source to be tested.

+

Beep sound

while measuring

Save measurement data

1

Press Save key on the lower
right of the screen.

EXCEL file name：

ESPDYYYY_MMDD_HHMMSS

.xls

( year ) (month)(day) (hour/min/seconds)

regular

▲ You may save entire source data.

2

select “Yes” key.

JPG file name：
VIEWYYYY_MMDD_HHMMSS

.JPG

( year ) (month)(day) (hour/min/seconds)

regular

42 3

▲ You may save the photo of viewport screen.

JPG file name：
IMGYYYY_MMDD_HHMMSS

.JPG

( year ) (month)(day) (hour/min/seconds)

regular

Press the “Measure”
buon on the le side
(marked with an M).

A viewport will display on the
screen with a “cross hair” mark

in the middle.

Press the “Measure” buon on
the le side at appropriate

distance.

- 11 -

This product beeps once
aer measurement is done
and displays results on

screen.

3

Measurement data is now
saved in SD card. You may
note down file name if
necessary.

▲You may save measurement screen in “BASIC mode”,
“SPECTRUM mode” and “CIE 1931.1976 mode”.

- 12 -

2.3 Setup Items in OPTION

Click OPTION icon in main screen to set up this product.

No SD card
System can’t read the SD card

or no SD card inside.

：

2.3 Setup Items in OPTION

Remaining power displayed

The Baery Status indicator appears on most
screens at the very top right corner. The
status shows remaining charge in blue

When charging with the AC adapter, a
lightning bolt
disappear when fully charged
cannot maintain a charge, you need to
purchase a new baery.

a

.

b

icon will appear – it will

c

. If the baery

a

b

c

SD card ready
User can storage funcon.

Previous

1

2

page

Back to

main menu

- 13 -

Next
page

3

：

4

5

You cannot set up battery. The screen remains intact after you tap it.1.

6

7

- 14 -

8

3 Home Screen（Page 1

）

The interface of the product is touch screen operaon. By touching the screen with your
figure, you may select the target menu or opon. The sub menus of each measurement
mode are as shown on the right.

3.1 BASIC

3.2 SPECTRUM

- 15 -

3.3 CIE 1931

3.5 CRI

3.7 COMPARE

3.4 CIE 1976

3.6 TM-30

You can access the Home
Screen Page 2 by tapping
the “Flip Page” icon in the
lower right corner on Page

1.

- 16 -

3.1 BASIC

3.1 BASIC

This screen shows a list of light measurements recorded aer pressing the “Measure”
buon as demonstrated.

Integraon mode

：Auto

：Manual

Capture funcon

：one time

：Continuous

：Continuous measurement in progress

Charge left

：Charging

：Charge left indicator

：Low charge indicator

Customize the five measurement items in BASIC mode.

The 5 items on the Basic list can be customized with different units of measure according to
your preference.

Click the item to be changed.

1

List of available items displays, click down

2

arrow key ”

> ” to scroll down to next page.

- 17 -

Click items to be shown in posion

3

①. Click “” key at boom of screen

to back to last page without selecng
any item.

- 18 -

Default item changed. Follow the same

4

steps to change other default items.

3.1 BASIC

Measurement seng

Please go to measurement page to do measurement sengs. There is a “Tools” icon in the
lower le cornera. Note that this icon is the Measurement Tools Icon as opposed to the
System Tools icon on the Home Screen.

I-Time

Setup

a

b

c

A

-Automac

M

-Manual

Auto Auto Manual Manual

Off On Off On

60

60

60

μs

μs

~

5000

ms

A

M

ms

-Automac+Long Time Exposure

L

-Manual+Long Time Exposure

L

500

~

500

60

μs

~

μs

~

5000

ms

a

b

c

The system will prompt you to do Dark
calibraon aer you turn on/off “Long
exposure me”. This procedure will take you
around 1min and 15 secs. We strongly
recommend that you to execute Dark

ms

Calibraon every me you on/off “Long me
exposure” setup.

1

This opon is turned on can
be file naming when you
saving measured data.

Continuous capture function allows users to take consecutive measurements and review

1.
results quickly without bothering with buttons - however, it does NOT allow you to save data to
the SD Card. (see the LOG function for continuous captures with data-save to an SD Card).
Live view mode only for BASIC, SPECTRUM, CIE1931, CIE1976, CRI measurements.

2.

Previous

page

Back to

measurement page

2

When saving data (e.g.
from the BASIC screen), you
can choose to save to an
Excel file, or Excel & JPG
files (screen shots).

Next

page

3 4

Integration time can be
automatically set by the MK350S
Premium (Auto Mode) or
Manually (Manual Mode). If
Manual Mode is chosen,
you must set “Integration
time”

- 19 -

This option is turned on in

low light conditions (LUX ≦

50). It allows you to set the
Integration time (exposure
time) higher.

5

The length of time, in µs,
that the MK350S Premium
captures light data in one
measurement (like exposure
time).

6

You can set the MK350S
Premium to take snapshots
continuously (Continuous
capture). As soon as you press
the “Measure” button, the unit
will begin to capture at 3 second
intervals. Press “Measure”
again to stop capturing.

7

This turns on and off the
audible beep that occurs
when you take a measurement

- it takes up to 3 seconds
take a measurement – the
unit beeps when it is done.

- 20 -

8

This item gives you the option
of reviewing the viewport
before you take a measurement
with the “Measure” button.

9

You are always prompted to
do a Dark calibration when
you turn on the unit.
However, you can perform a
dark calibration anytime
with this option.

3.2 SPECTRUM

3.3 CIE1931

Light Spectrum of the latest measurement taken.

The CIE1931 chromacity x, y values of the latest measurement taken.

- 21 -

- 22 -

3.4 CIE1976

3.5 CRI

The CIE1976 chromacity u’, v’ values of the latest measurement taken.

The CRI R1-R15 values of the latest measurement taken.

Click one of the bars R1~R15
and its index displays in second
row at top right of screen.

- 23 -

- 24 -

3.6 TM-30

3.7 COMPARE

TM-30 provides equaons and direcon for calculang Rf and Rg, including the spectral
reflectance funcons for the 99 CES. The IES (Illuminang Engineering Society of North
America) TM-30 color rendion method was developed by representaves of the
manufacturing, specificaon, and research segments of the lighng industry.

Touch the graph to

switch the table

between Color Vector

Graphic and Rf-Rg Plot.

gray line
reference source

Color Vector Graphic：one of the outputs of TM-30.
This graph can tell us how, on average, various colors are distorted.

1. outward arrows mean more saturated colors

2. inward arrows mean duller colors

3. sideways arrows mean a hue shift

4. no arrow means that the color isn’t distorted

Rf：Fidelity Index
Rf takes a maximum value of 100. If Rf is 100, it is a match to the

reference source (true to the “real color”, similar to CRI Ra 100). If
color shifts occur, the arrows get longer and Rf decreases (to a
minimum value of zero).

Rg：Gamut Index

Rg=100 means that the test light source doesn’t change the hue or
saturation of the CES compared to the reference source.

Rg>100 indicates that the test light source increases the saturation

of the CES producing colors that are more vivid.

Rg<100 indicates that the test light source decreases the

saturation of the CES producing colors that are less saturated.

red line
test source

- 25 -

Dark gray area



Light gray area



Rf-Rg Plot: location analysis diagram
For comparing different light source

Rf range: 50~100
Similarity of individual standard colors with

reference to when exposed to test light source.

Rg range: 60~140
Change in saturation of individual standard

colors with the reference to when exposed to

test light source.

The Compare item allows you to compare two measurements side by side. You can compare
two consecuve measurements or compare a measurement against historical data (SD
card).

BASIC

CIE1931

CRI

SPECTRUM

CIE1976

When you press the COMPARE
icon (on Home Screen), the
COMPARE Menu will display,
which is similar to the Home
Screen. You can tap any of the
icons depending on what type
of data you want to compare.

The examples in the following pages only describe how to compare data in the BASIC and

1.
SPECTRUM screens, - comparing CRI, CIE 1976, CIE 1931 data are similar.

- 26 -

3.7 COMPARE

3.7 COMPARE

Compare two consecuve measurements

1

Select the BASIC icon. The
le column and right column
will represent the data you

are comparing.

4

2

First, tap the le column.

A red border will appear
around the right column.

5

Point the MK350S Premium

3

to a light source and take a
measurement.

Take another measurement.

6

7

Compare against historical data

1

2

A file browser appears

3

showing the files on the
SD card. Select one of
the Excel files.

The data will appear in

4

the column you selected.

Folder icon

To compare against historical data ( saved on SD
Card ), first tap either the le or right column
then tap the “Folder”

corner.

2

icon in the lower right

1

, and

The measurement data
will fill the le column.

Next, tap the le column.
A green border will appear.

- 27 -

The new data will fill the

right column. You can

now compare the two

measurements.

The list items in the COMPARE screen (e.g. CCT, CRI, LUX etc.) is the same list configured

1.
for the BASIC Screen. If you change the list items on the BASIC screen, it will also change on
the COMPARE screen.

- 28 -

3.7 COMPARE

3.7 COMPARE

Spectrum data comparison

1

Select the SPECTRUM icon. You
will get a screen with a similar
le/right column format, similar
to the BASIC List comparison.

3

2

You can tap one of the columns.

4

It is also possible to see the relave difference between the spectrum data between the
first measurement and the second measurement.

1

Press the Tools icon on
the boom le boom

corner.

2

Click down arrow key
”

> ” to scroll down to

next page.

3

Press the “Compare
mode” item.

4

Take a measurements or access historical data.
( do the same for the other column )

- 29 -

The spectrum data will fill the
chart with the data in the form
of a red graph line and a green
graph line, represenng the le
and right columns respecvely.

Select the “Absolute” radial
buon and tap “Yes”.

- 30 -

4 Home Screen（Page 2

）

You can access the Home Screen Page 2 by tapping the “Flip Page” icon in the lower right
corner on Page 1. The interface of the product is touch screen operaon. By touching the
screen with your figure, you may select the target menu or opon. The sub menus of each
measurement mode are as shown on the right.

4.1 FLICKER

4.2 FREQUENCY

- 31 -

4.3 FLICKER RISK

4.5 TRANSMIT

4.7 LOG

4.4 BLUE HAZARD

4.6 LUX．G

You can access the Home
Screen Page 3 by tapping
the “Flip Page” icon in the
lower right corner on Page

2.

- 32 -

4.1 FLICKER

4.1 FLICKER

Flickers are caused by electrical currents, especially with conflicng AC current of the power
supply and DC current of the lamp design. In most cases these light source induced effects
are hard to be detected by human eyes. Yet they weaken sight and impose damage to
personal health, including visual fague and migraine headaches. Users may idenfy these
by checking the flicker measurement index of the light source.

Customize the five measurement items in FLICKER mode.

The 5 items on the Flicker list can be customized with different units of measure according
to your preference.

Click the item to be changed.

1

Click items to be shown in posion

2

①. Click “” key at boom of screen

to back to last page without selecng
any item.

- 33 -

Default item changed. Follow the same

3

steps to change other default items.

- 34 -

4.2 FREQUENCY

4.2 FREQUENCY

Flickers are subject to periodic fluctuaons and may be analyzed by frequency or me

domain.

Touch the graph to switch the

table between Flicker

Frequency-domain Graphic

and

Flicker Time-domain Graphic.

Sampling rate measurement sengs

1

Press the Tools icon on
the boom le boom

corner.

4

2

Click down arrow key
”

> ” to scroll down to

next page.

5

3

Press “Sampling me”
and “Flicker resoluon ”
for its sengs.

- 35 -

Once Sampling me is
set, press Yes to exit to
setup seng page.

Once Flicker resoluon
is set, press Yes to exit
to setup seng page.

- 36 -

4.2 FREQUENCY

4.2 FREQUENCY

Set up frequency domain

1

Press the Tools icon on
the boom le boom

corner.

4

2

Click "Frequency domain
(start)" and "Frequency
domain (end)" to set up.

3

Use keyboard to set
the values. Press OK to
save the seng.

Set up me domain

1

Press the Tools icon on
the boom le boom

corner.

4

2

Click "Time domain (start)" and "Time
domain (end)" to set up.

3

Use keyboard to set
the values. Press OK to
save the seng.

Frequency domain display

range changed.

- 37 -

Time domain display range

changed.

- 38 -

4.3 FLICKER RISK

4.4 BLUE HAZARD

The flicker risk model, based on IEEE PAR 1789-2015 flicker safety specificaon standard,
provides users with more intuive, simpler ways to assess risks of target light source.

Red colored area：DANGER ZONE

Yellow colored area：LOW RISK
Green colored area：NO EFFECT

Area without impact: border of upper limit of green colored area
Frequency above 90Hz

Modulation (%)< 0.0333×Frequency



Addressing blue light measurement requirements: employ IEC TR 62778 and apply IEC
62471 to assess hazards of blue light by LEDs and lamps and help users in prevenng blue
light hazards (BLH) effecvely. Blue light: light of wavelength in range of 400-500nm.

Blue light hazard spectral weighting function : B(λ)
Spetral Radiance : E(λ)
Blue light weighted irradiance (EB) = B(λ) * E(λ)

Blue light hazard efficacy of luminous radiation (Kbv) = EB / Y ( Lux)
BLH Risk Group (RG)

Define the four RG grades of blue light damage risk according to the maximum exposure
me (the maximum safe me for rena under direct exposure to light source) measured by
blue light radiance under this standard as shown in table below:

Blue light injury risks are defined in four grades

Low risk area: border of upper limit of yellow colored area
Frequency below 90Hz
Frequency above 90Hz

Modulation (%)< 0.025×Frequency



Modulation (%)< 0.08×Frequency



- 39 -

RG 0

RG 1

RG 2

RG 3

Grade

Exempt

Low

Moderate

High

blue-light radiance

0-100

100-10,000

10,000-4,000,000

>4,000,000

Maximum exposure
time in seconds

Without definition

100-10,000

0.25-100

<0.25

(Dislike reaction)

- 40 -

Recommendation

Better not look at light source for long time

DO NOT look at light source

Direct gazing at light source briefly may still

hurt.

4.5 TRANSMIT

4.5 TRANSMIT

Transmit measuring mode with user-friendly to measure the transmiance of various color
film and provide penetrang light spectrum.

1

First, tap the A column.
A red border will appear

around the column.

4

2

Measuring with the MK350S

Premium.

5

3

The content A will turn
into red when measuring

completed.

Seng the ranges

1

To set the ranges, tap
the “Tool” icon in the
lower le corner.

4

2

User can check the

transmiance of the
specific wave band.

5

3

Input lower limits with
keyboard, press "OK"
to save sengs and exit

to measurement setup
page.

Next, tap the B column. A
green border will appear

around the column.

Put the filter or sample on the

light sensor and then processing
the second measurement.

- 41 -

The content B will turn into
green when measuring completed.
The transmiance data will
be displayed on the right
column of the screen.

Input upper limits with
keyboard, press "OK"
to save sengs and exit

to measurement setup
page.

Get transmit rate from
specified wavelength range.
The spectrum graph will
display two orange doed

lines.

- 42 -

4.6 LUX．G

4.7 LOG

The LUX. G item is a unique feature important for interior designers and lighng
professionals. It gives a visual representaon of light distribuon in a scene, giving you a
reference for environment light design (homes, libraries, offices, museums etc.).

Normal View button

Tap this buon to return to
normal view.

The LUX. G screen
inially displays the
viewport in normal
view mode.

Aer tapping the
LUX buon, the light
distribuon appears
in the viewport. The
brightest and darkest

areas are indicated in

the color bar below
the viewport ( red =
brightest, blue = darkest
).

LUX button

Tap this buon in the upper le
to view the light distribuon.

The LOG funcon is used to connuously capture several measurements in sequence. It is
similar to the “Capture” funcon in the Measurement Tools. However, with Logging, the
data will capture AND save to the SD Card.

- 43 -

- 44 -

4.7 LOG

4.7 LOG

1

Configure the sengs by
pressing the “Tool” buon
at the lower le corner.

2

Setup the logging parameters.

1

2

3

You can begin a Log session
by tapping the play icon in
the lower right corner.

3

4

4

You can stop the logging by

tapping the stop icon.

5

5

The Count opon will reset
to its default sengs aer

measurement is done.

I-Time is the “Integration Time” or the amount of time that the MK350S captures light informa-

1.
tion ( similar to exposure time). The Log function allows you to setup Integration Time criteria
during the Logging session.
It's recommended to execute Dark Calibration after you turn on/off the "Long time exposure"

2.
item.

- 45 -

1 2 3

4

5

Refer P26 for I-Time Setup chart.

The range of Interval is 00:00:20~24:00:00.

Range of measurement frequency: 1~9999999. You may set it to
"INF" to keep on saving measurements unl the SD card gets full.

- 46 -

5 Home Screen（Page 3

）

You can access the Home Screen Page 3 by tapping the “Flip Page” icon in the lower right
corner on Page 2. The interface of the product is touch screen operaon. By touching the
screen with your figure, you may select the target menu or opon. The sub menus of each
measurement mode are as shown on the right.

5.1 CHECKER

5.3 BROWSER

5.2 BIN

- 47 -

You can access the Home
Screen Page 1 by tapping
the “Flip Page” icon in the
lower right corner on Page

3.

- 48 -

5.1 CHECKER

The Checker funcon allows you to see if the values of an LED measurement fall within an
acceptable range of values.

Seng the Ranges

5.1 CHECKER

1

To set the ranges, tap the
“Tool” icon in the lower le

corner.

2

Set the maximum and minimum

ranges for each of the items
in the CHECKER screen.

3

Use keyboard to set the
minimum values. Press OK
to save the seng.
± : plus and minus
BS : backspace

4

Use keyboard to set the
maximum values. Press OK
to save the seng.
± : plus and minus
BS : backspace

5

You can take a reading by
pressing the Measure buon.

6

The measurement values will
display and the numbers will
be compared against preset
ranges and display an “ ”
(ok) or an “ ” (out of range
), indicang if the ranges fall
within acceptable ranges.

The list in the Checker screen (e.g. CCT, CRI, LUX etc.) is the same list configured for the

1.

BASIC Screen ( see P18 Customizing the Basic List). If you change the list on the BASIC
screen, it will also change in the CHECKER screen.

- 49 -

- 50 -

5.2 BIN

5.2 BIN

The BIN funcon serves to assist LED manufacturers and buyers in measuring and then
classifying LEDs for “Bins” as defined by classificaons according to USA Energy Star ANSI
C78.377.

When you take a measurement for an LED from
this screen, a bin number displays next to the
“BIN” label indicang which BIN that LED
belongs to based on USA Energy Star ANSI
C78.377 standards.

BIN ranking can also be customized by loading a
modified BIN chart, using a PC and the
uSPECTRUM soware (see Note below).

Mode switch set up

1

To set the ranges, tap
the “Tool” icon in the
lower le corner.

4

2

Press the “Mode” item.

3

You may toggle switch
between SDCM or BIN

modes.

Please make sure you go to the UPRtek website to register licence and download the PC

1.
software, uSPECTRUM.

- 51 -

Screen display changed to
"SDCM".

- 52 -

5.2 BIN

5.2 BIN

To use a modified BIN chart, you must download the new BIN chart, which you create using
the uSpectrum PC soware.

Use a USB cable to connect the MK350S Premium to a PC. Click the uSpectrum icon on

1

the PC.

Tap the BIN icon on the le side and then tap "Load BIN to Device" at the top of the

2

screen.

Browse to your modified BIN Chart and press OK to load the new BIN chart.

3

(Note: Modifying the BIN chart is covered in the uSpectrum PC Soware secon)

Your modified BIN chart is now uploaded and ready to use.

4

- 53 -

- 54 -

5.3 BROWSER

6.1 Bracket

The Browser (on Home Screen) allows you to review historical data that was previously
saved to the SD card.

1

When you press the “Browser”
icon, a file browser will
display showing the files
on the SD card.

Previous page

Back to main menu

Return to the previous folder

Next page

2

If you select an excel
file, a review menu will
display, similar to the
Home Screen. You will
have access to all the
data and charts that were
available when the
measurement was taken.
Press any of the icons
to review the data.

3

Displaying the data of
excel file.

Previous file

Back to main menu

Next file

You can aach an oponal accessory bracket to the MK350S Premium that will allow you to
use a stand or tripod for hands free LED measurements.

- 55 -

- 56 -

6.2 SD Card

6.3 Connecting with Mobile APP

BASIC
SPECTRUM

CIE1931

CRI

TM-30

FLICKER
FREQUENCY

FLICKER RISK

BULE HAZARD

LUX．G

This unit can write measurement data onto an SD Card (only
support for above 1GB ~ up to 32GB). Simply insert the card into
the card reader slot. Data is wrien as excel files (.xls) or jpg
image files (for light spectrums and color gamuts).

Naming RuleExcel File JPG FileMode

Excel File

ESPDYYYY_MMDD_HHMMSS

JPG File

IMGYYYY_MMDD_HHMMSSCIE1976

JPG File

VIEWYYYY_MMDD_HHMMSS

Excel File
JPG File
Excel File
JPG File
Excel File
JPG File
TRANSMITYYYY_MMDD_HHMMSSTRANSMIT
Normal View
LUX View

LOGYYYY_MMDD_HHMMSSLOG
CHKYYYY_MMDD_MMSSCHECKER
BINYYYY_MMDD_HHMMSSBIN

：

：

：

FLICKERYYYY_MMDD_HHMMSS

：

FLICKERYYYY_MMDD_HHMMSS

：

FLKRISKYYYY_MMDD_HHMMSS

：

FLKRISKYYYY_MMDD_HHMMSS

：

ESPDYYYY_MMDD_HHMMSS

：

IMGYYYY_MMDD_HHMMSS

：

LUXYYYY_MMDD_HHMMSS

：

LUXGYYYY_MMDD_HHMMSS

：

WiFi Wing wireless remote control card

Insert WiFi Wing card to the system. At IOS or Android plaorm, download MK350S
Premium APP and install it on your mobile. Then you can connect with system for the
measurement of wireless control.

WiFi Wing

wireless remote control card
( It is used to connect with APP.)

For more operaon, please refer to Wing user manual. Please visit UPRtek official site, hp://www.uprtek.com

※

Install APP

Download and install the MK350S Premium APP on your Mobile.

MK350S Premium

Select WiFi UPRtek_Wing.

Measure

UPRtek_Wing

WiFi connection

- 57 -

- 58 -

6.4 Connecting with uSPECTRUM

6.4 Connecting with uSPECTRUM

Install uSPECTRUM PC soware

Please visit UPRtek official site, hp://www.uprtek.com, Download and install uSpectrum
soware on the PC. Then you can connect it with the system for USB control of

measurement.

uSPECTRUM

Install file

Set USB PC connecon mode

You may connect this product to a Windows PC with USB (rather than Type-C USB) cable.
Note: Please select PC connecon in USB mode in items of OPTION mode.

Mass storage：

Save measurement data
in SD card of MK350S

Premium.

PC connection：

Connecon MK350S Premium to PC
via USB cable for measurement
use with uSpectrum .

Measure

Aer connecon, the MK350S Premium screen will display as shown.

USB connection

uSPECTRUM

PC software

Select “Opon”. Select “USB mode”. Select “PC connecon”

and press Yes.

- 59 -

- 60 -

6.5 Connecting with uFLICKER

6.6 Troubleshooting

Install uFLICKER PC soware

Please visit UPRtek official site, hp://www.uprtek.com, Download and install uFLICKER
soware on the PC. Then you can connect it with the system for USB control of

measurement.

uFLICKER
Install file

Set USB PC connecon mode

Select “Opon”. Select “USB mode”.

Select “PC connecon”

and press Yes.

In case of system failure or stuck (screen gets locked) please press and hold the power key
for 3 seconds to shut down this product. Then power it on again and see does it back to
normal. In the problem persists, run steps below to reset this product.

To reset this product : Reset this product by pressing the reset key with sharpened pencil.

Measure

USB connection

- 61 -

uFLICKER PC software

DO NOT use sharp point objects with diameter less than 1mm (e.g., paper clip and ball pen) to

1.
press the key as it may lead to board circuit induction or damage and failure to this product.
DO NOT use pencils with broken point to press the key as the pigment core may jam the key

2.
for reset or lead to damage and failure to this product.

- 62 -

7.1 Specification

7.1 Specification

Sensor

Illuminance meter class

Wavelength Range

Wavelength Data Increment

Spectral Bandwidth

Wavelength Reproducibility

Measurement Range

Illuminance Accuracy

Illuminance Repeatability (2σ)

Color Accuracy

Color Repeatability (2σ)

CCT Accuracy

CRI Accuracy @ Ra

Stray Light

Integraon Time Range

Digital Resoluon

Measurement Range

Sampling Rate

Frequency Range

Frequency Resoluon

Flicker Accuracy

Spectrum

CMOS Linear Image Sensor

Direconal response conforms to JIS C 1609-1:2006 for General Class AA.

Direconal response conforms to DIN 5032 Part 7 Class B.

380 to 780 nm

1 nm　

Approximately 12 nm (Half Bandwidth)

*1

± 1 nm

1 to 150,000 lx

± 2.5%

0.2% (100 to 150,000 lx)

0.5% (5 to 100 lx)

1% (1 to 5 lx)

x y: ± 0.002 (100 to 150,000 lx)

x y: ± 0.0025 (5 to 100 lx)
Illuminant A @ 2,856 K
x y: ±0.003 (1 to 5 lx)
at 20,000 lx
x y: 0.0002 (500 to 150,000 lx)

x y: 0.0004 (30 to 500 lx)

x y: 0.001 (5 to 30 lx)

x y: 0.002 (1 to 5 lx)

± 2%

± 1.5%

-25 dB max.

60us to 5,000 ms

16 bits　

1 to 150,000 lx

100k sample/sec

5 to 50k Hz

2, 4, 8, 16, 32 Hz

± 5%

*2

*3

Flicker

Feature

Capture Funcon

Operaon Mode

Integraon Mode

Dark Calibraon

Measuring Modes

One me / Connuous

*4

Standalone Mode / WiFi Mode

USB Mode (MSC Mode

Auto / Manual

Yes (Auto)

1. Basic Mode

2. Spectrum Mode

3. CIE1931 Chromacity Mode

4. CIE1976 Chromacity Mode

5. CRI Mode

6. TM-30-15 Mode

7. Measurement Comparison Mode

8. Flicker Mode

9. Frequency Mode

10. Flicker Risk Mode

11. Blue Light Hazard Mode

12. Transmit Mode

13. LUX Image Distribuon Mode

14. Log Mode

15. Quality Control Checker Mode

16. BIN Chart Mode

17. Browser Mode

18. Opon Mode

1. Illuminance (LUX)/Foot Candle (fc)

2. Correlated Color Temperature (CCT)

3. CIE Chromacity Coordinates

(1) CIE 1931 x,y Coordinates

(2) CIE 1976 u',v' Coordinates

(3) CIE 1931 XYZ Value

4. △x , △y , △u' , △ v'

5. Delta uv (Duv)

6. Dominant Wavelength(λd)

*5

/

+ PC connecon)

- 63 -

- 64 -

7.1 Specification 7.1 Specification

Measuring Capabilies

Display

Max. Files

7. Excitaon Purity

8. BIN ANSI C78.377 or Customized

9. Standard Deviaon Color Matching(SDCM)

10. Color Rendering Index (CRI, Ra)/R1 to R15

11. Color Quality Scale (CQS)

12. Gamut Area Index (GAI)

13. Television Lighng Consistency Index (TLCI)

14. TM-30-15 (Rf, Rg, Color Vector Graphic)

15. Flicker Frequency

16. Percent Flicker

17. Flicker Index

18. Stroboscopic Effect Visibility Measure (SVM)

19. Photosynthecally Acve Radiao (PAR)

2

*

(1) PPFD (400 to 700nm) µmol/(m

(2) PFD-UV (380 to 400nm) µmol/(m

(3) PFD-B (400 to 500nm) µmol/(m

(4) PFD-G (500 to 600nm) µmol/(m

(5) PFD-R (600 to 700nm) µmol/(m

(6) PFD-FR (700 to 780nm) µmol/(m

20. Spectral Power Distribuon (SPD) mW/m

s)

2

*

s)

2

*

s)

2

*

s)

2

*

s)

2

*

s)

2

21. Peak Wavelength (λp)

22. Peak Wavelength Value ((λpV)

23. Intergraon Time (I-Time)

24. Scotopic and Photopic Rao (S/P)

25. Transmiance

26. Flicker Risk - IEEE

27. EB

28. Kbv

29. RG

System Configuraons

4.3" 800X480 Resisve Touch LCD

≒ 21,000 Files @ 8GB SD Card (Excel + JPG)

Baery Operaon Time

Power

≦ 4 hours / Fully Charged

Adapter; 2500 mAh (3.7V Rechargeable Li-ion Baery)

SD card ( SD2.0 , SDHC/up to 32G)/

Data Output Interface

Mini USB Port (USB 2.0)/

WiFi SD Card compable with iOS and Android

Data Format

Dimensions

Weight (with Baery)

Operang Temperature/Humidity

Storage Temperature/Humidity

Display languages

Compable Excel/JPG

163 x 81 x 26.6 mm (H x W x D)

260 g ± 10 g

0 to 35 ℃, relave humidity 70% or less without condensaon

-10 to 40 ℃, relave humidity 70% or less without condensaon

English/Tradional Chinese/Simplified Chinese/

Japanese/Spanish/German/French/Italian/Russian

Camera Resoluon

2M pixels

*1：Input source must be a stable light source.
*2 ：Temperature 23±2℃ and relave humidity 50% or less.
*3：Input the 550nm monochromac light and measure the stray light rao at 550nm ± 40nm.

*4：It can be connected to mobile phones and tablets.
*5：MSC- Mass Storage Class.

The company reserves the right to change product specificaons at any me without prior noce.

Figure 1：Cosine Correction

0

7

5

7

0

8

5

8

0

9

5

2

0

3

5

3

0

4

5

4

0

5

5

5

0

6

5

6

0

5

5

1

0

1

5

1

0

2

0

1

5

2

0

2

5

3

0

3

5

4

0

4

5

5

0

5

5

6

0

6

5

7

0

7

5

8

0

8

5

9

0

Ideal value

MK350S Premium

- 65 -

- 66 -

7.2 General Attributes

7.2 General Attributes

Abbreviation

CCT

The color temperature is the color radiated by a black-body radiator under different temperatures. CCI has
the color that is the closest to the ideal black-body radiator.

CRI (Ra)

As defined by CIE, R1~R8 represent the value of eight standard colors, while CRI(Ra) is the average
value of R1~ R8. The value 100 indicates the best quality of light source, while the value 0 indicates the
worst quality of light source.

R1、R2….R15

Varieties of color rendering index
It represents the quality of light source, with the indexes corresponding to 15 standard colors, including:
R1: light grey-red; R2: dark grey-yellow; R3: saturated yellow-green; R4: middle yellow-green; R5: light
yellow-green; R6: lightblue; R7: light purple-blue; R8: light red-purple; R9: saturated red; R10: saturated
yellow; R11: saturated yellow; R12: saturated yello; R13: white skin color; R14: Leaf green; and R15:
yellow skin color.

Lux

It is the light flux received by each unit area.

λp

It is the wavelength with the highest power in the measured spectrum.

λpV

It is the highest power in the measured spectrum.

λd

The dominant wavelength is used to express the color of the measured light. It could be hybrided by the
spectrum color of the wavelength and the standard illuminant E(x,y = 0.333, 0.333).

I-Time

The integration time measured by the spectrometer.

x,y,X,Y,Z

Chromaticity chart CIE1931 by Commission International de l'Eclairage (CIE) Represent light color with
plane (2-dimension) coordinates (x, y).

u',v'

Chromaticity chart CIE1976 by CIE Represent light color with plane (2-dimension) coordinates (u', v').

Duv

It is the uv distance between CIE1960 coordinate and the Planck’s blackbody radiation with the same
color temperature. The value close to 0 indicates the color temperature and color are closer to that of the
blackbody radiation. The positive value indicates it is above the blackbody radiation, while the negative
value indicates it is below the blackbody radiation.

Full Name



Correlated Color Temperature

Color Rendering Index

Illuminance

Peak Wavelength

Peak Wavelength Value

Dominate wavelength

Integration time

CIE1931 color coordinate

CIE1976 color coordinate

CIE1960 uv color coordinate difference

- 67 -

Unit

nm

mW/m

nm

us

Abbreviation

K

lx

2

Δx

It is the x difference between CIE1931 coordinate and the Planck’s blackbody radiation with the same
color temperature.

Δy

It is the u' difference between CIE1976 coordinate and the Planck’s blackbody radiation with the same
color temperature.

Δu'

It is the u' difference between CIE1976 coordinate and the Planck’s blackbody radiation with the same
color temperature.

Δv'

It is the v' difference between CIE1976 coordinate and the Planck’s blackbody radiation with the same
color temperature.

fc

It is based on the unit lm/ft

Purity

It is the percent of the dominant wavelength in the standard illuminant. The closer the color purity is to
100%, the closer it is to the dominant wavelength.

PPFD

It is the Photosynthetic Photon Flux Density defined in 400~700nm.

PFD-R

PFD in range of 600~700nm.

PFD-G

PFD in range of 500~600nm.

PFD-B

PFD in range of 400~500nm.

PFD

Number of photons in range of 380~780nm subjected by unit area in unit time.

PFD-UV

PFD in range of 380~400nm

PFD-FR

PFD in range of 700~780nm

CQS

CQS is a new light source quality parameter developed by NIST for the new solid-state lighting markets.
Addressing CRI, assess light source with the 15 new colors: with a scale of 0-100, scores 100 suggest the
best quality and zero the worst.

Full Name

CIE1931 color coordinate difference

CIE1931 color coordinate difference

CIE1976 color coordinate difference

CIE1976 color coordinate difference

Footcandle

2

.

Color purity

Photosynthetic Photon Flux Density

PFD in red field

PFD in green field

PFD in blue field

Photosynthetic Photon Flux Density

PFD in UV field

PFD in FR field

Color Quality Scale

- 68 -

Unit

%

µmol/(m2*s)

2

µmol/(m

µmol/(m

µmol/(m

µmol/(m

µmol/(m

µmol/(m

*s)

2

*s)

2

*s)

2

*s)

2

*s)

2

*s)

fc

7.2 General Attributes

7.2 General Attributes

Abbreviation

GAI

The Gamut Area Index is the ratio between the area of the eight standard colors (R1~R8) on CIE1976
coordinate measured by CRI and the area measured with the standard illuminant E(x,y = 0.333, 0.333).
The higher the value is, the more saturated and bright the color is.

TLCI

The parameter is defined by referring to European Broadcasting Union (EBU), which is used to evaluate
the light source under for television lighting.

IRR

It is the irradiance within the range of the wavelength specified in the specification.

S/P (SP-ratio)

The sensitivity of human eyes varies with the light of different wavelength. It can get the data such as
illuminance based on the brightness function. However, the brightness function is different for human
eyes under high brightness and low brightness. Therefore, it defines the ratio of photopic vision under
high brightness and scotopic vision under low brightness, which is called S/P ratio.

BIN

To classify the chromaticity of LED, ENERGY STAR combines with ANSI C78.377 standard to classify
various classes and make uniform BIN types. So the user may distinguish the chromaticity of LED
products easily.

SDCM

SDCM has the same meaning with that of Macadam Ellipse. The color within Macadam Ellipse (SDCM=1)
drawn on the coordinate can’t be identified by human eyes.

TRANSMIT

The transmittance is defined as (the radiant flux transmitted/the radiant flux received)x100 %, based on
which the wavelength response can be obtained.

Rf / Rg

It is a rating method proposed by IES for the performance of light source. Different from 8 standard colors,
it defines 99 standard colors to present the performance of various wavelengths. Rf represents the
similarity between the target light source and the reference light source under the standard colors. The
value 100 represents it is identical, while the value 0 represents great difference. Rg represents the
saturation difference between the target light source and the reference light source under the standard
colors. The value 100 represents the saturation is the same, while the value larger than 100 represents
saturation is higher, and the value smaller than 100 represents saturation is lower. Moreover, it could
identify the difference more obviously through the color vector diagram and the color tolerance diagram.

Flicker Idx

Flicker index= Area above the mean value /area below the mean value. Higher value represents obvious
flicker.

Full Name

Gamut Area Index

Television Lighting Consistency Index

Irradiance

Scotopic vision / photopic vision ratio

Standard Deviation Color Matching

Transmittance

TM30 Rf / TM30 Rg

Flicker index

- 69 -

Unit

W/m

%

Abbreviation

Fpercent (Pct Flicker)

2

Flicker percent=(Maximum value-minimum value)/ ( Maximum value + minimum value). Higher value
represents obvious flicker.

SVM

SVM is an index used to quantify the flicker effect. Higher value represents obvious flicker effect.

Frequency

It is the flicker rate of the measured light, or the frequency shown per second.

Twave

It is the countdown of the flicker frequecny of the measured light, or the time of one flicker.

RMS(%)

Flicker RMS is the square root of the average of a set of squares of statistical data.

RMS(dB)

Flicker RMS is the square root of the average of a set of squares of statistical data.

Avg

Waveform average.

Min

Waveform minimum.

Max

Waveform maximum.

min/max (%)

Waveform minimum / maximum.

min/max (dB)

Waveform minimum / maximum.

Flicker Risk

The flicker risk model provides users with risk value of target light source according to IEEE PAR 1789-2015
flicker safety specification standards.

EB

The IEC62471 specification has blue light damage spectral function B (λ) built in. Determine major scope of

blue light damage to human eyes with this function and factor in the light source spectral irradiance to obtain
blue light radiation damage irradiance.

Kbv

Based on Kbv = EB/E (blue light hazard radiance, EB, and total luminance of the light source) to analyze
individual light source spectrum radiation and level of blue light injury on human eyes.

Full Name

Flicker percent

Stroboscopic Effect visibility Measure

Flicker Frequency

Flicker Cycle

Flicker square root

Flicker square root

Blue light weighted irradiance

Blue light hazard efficacy of luminous radiation

- 70 -

Unit

dB

dB

W/m

W/lm

Hz

ms

%

%

V

V

V

%

2

7.2 General Attributes

8.1 Q&A

Abbreviation

RG

Define the four RG grades of blue light damage risk according to the maximum exposure time (the maximum
safe time for retina under direct exposure to light source) measured by blue light radiance.

Full Name

BLH Risk Group

Unit

The following situaons are not fault. Please double check it before requesng for repair. If
it doesn’t work normally aer the inspecon, it could be caused by fault of the device. In
this case, please take out the baery and contact the seller or the vendor for repair.

State : Power-on failure (No display)

1. Check whether the baery is installed correctly.
Please don’t install the baery inversely, or push it in violently, which may destroy the



baery spring.

2. Check whether the baery runs out of power.

Please charge the baery for 6hours for the first use. (Please refer to 2.1)



3. Check whether the baery connector is dirty.
Please wipe it with dry cloth.



Why I feel the card is stuck when inserng and unplugging it?

It is the an-shedding funcon designed specially. It prevents SD card shedding in case of



collision under external force, which may cause write-in error.

What is the funcon of dark calibraon?

The dark calibraon is also known as zero calibraon. As the temperature change of the



environment affects the measurement results, the user is suggested performing dark
calibraon before measurement, so as to improve the measurement accuracy.

Why my SD card can’t be used on MK350S Premium?

The SD card should be formaed into FAT before being inserted into MK350S Premium.



Moreover, the memory of SD card is required to be 1G or higher.

- 71 -

- 72 -

Appendix

Product Warranty

- 73 -

Warranty Policy

UPRTEK provides the service of repairing or changing equivalent products for the
customer in case of the material or functional defect and fault during the product
warranty period.

1. Changing new product

■

If the consumer finds any functional defect or fault or finds any part missing
within 7 days after purchasing the product, it should consult the original seller
and report to the vendor immediately. Moreover, it should leave the contact
information, so the customer service personnel of the original vendor will check
it out and generate the number of changing new product for the customer. In this
case, the original vendor provides the service of “changing new product” within
7 days.

The customer should return the product to the original vendor within 30 days

■

after getting the repair number. As for the international customer, it permits the
flexibility of logistical time and expands the time for returning the product to the
original vendor.

Remarks：It requires complete package when returning the product to the original
vendor. There should be no part missing or scratch on the surface unless the part
is found missing when the product is delivered. Under this circumstance, the
original vendor reserves the ultimate right to determine whether to change new
product.

2. Repair service

■

If it exceeds the period for changing new product (seven days), the functional
non-compliance or defect found on the product should go through RMA
workflow. When any product needs to be returned to the original vendor for
repair, it should consult the business service personnel via Email, fax or phone
call to apply for repair number before returning the product to the original vendor
for repair service.

After the original vendor receives the returned product, the internal engineer of

■

the Company will check it initially and confirms the causes for product defect. If
it is within the warranty period and it is the functional fault of the product, it
should follow the general repair workflow. However, if the engineer checks it is
human damage rather than functional fault, it is inapplicable to the warranty
term.

：

：

- 74 -

Remarks：To avoid damage during the product transportation, we strongly
recommend choosing international express service and protecting the product
carefully.

Limited Warranty

The warranty term is inapplicable to the damage caused by unnatural or external
factors, such as the following circumstances

When the fault is caused by the natural disaster and improper human operation

1.
rather than the product itself.

When the product is repaired or disassembled by others rather than the

2.
technician authorized by the company.

When the warranty volume label or disassembly-proof volume label is modified,

3.
damaged or gone.

When the product serial number is wrong, damaged or unclear

4.

Exemption from Liabilities

UPRTEK is not liable to the product defect or damage caused by any factor

■

during the transportation of sending MK350 series product for repair. It is
recommended taking out the storage device, packing and transporting the
product properly on your own before sending the product for repair.

■

UPRTEK is not liable to the compensation for the operation loss, expected cost
loss, data loss caused by or related to the usage of the product of the Company,
as well as any other indirect, accident or derivative loss or damage provided it
is permitted by the laws.

：

Applicable Subjects for Warranty Terms

UPRTEK’s warranty service terms are only applicable to the consumers who
purchase the company products through formal or legal sales channels.

Warranty Period

1. Host of MK350 series product
UPRTEK provides three years of warranty service for all MK350 series products,
with free calibration service for one time.

2. Product supplies and related accessories：
The product suppliers and the related accessories such as battery, tripod and neck
strap, are excluded from the warranty service.

Services Provided by Authorized Agent or Distributor

■

The qualifies agent or distributor may receive or deliver the host of MK350
series product for basic inspection, so as to confirm whether the device needs
to be returned to the original vendor for further calibration service.

URL of qualified agents or distributors: www.uprtek.com.

■

The basic inspection service provided for the consumer is charged based on the

■

announcement made by UPRTEK

Other Notes

UPRTEK doesn’t produce or manufacture all materials and parts of the product. If
the target material and part is discontinued within the warranty period, UPRTEK is
entitled to replace it with equivalent alternative to finish repair.

Delivery Methods

UPRTEK doesn’t produce or manufacture all materials and parts of the product. If
the target material and part is discontinued within the warranty period, UPRTEK is
entitled to replace it with equivalent alternative to finish repair.

Sending for Repair

：

.

- 75 -

Consumer may send the product back to the original vendor RMA repair service
through either of the following two methods

：

- 76 -

The consumer sends the product to UPRTEK’s agent or distributor which will

■

return it to the original vendor for repair.

■

The consumer sends the product to UPRTEK for repair directly.

Service after Warranty Period

If any damage or fault occurs to MK350 series product after three years of warranty
period, the consumer may still return the product to UPRTEK for repair. However,
the repair service should be charged based on the product fault or damage
condition. If the engineer finds the following situations, it is suggested purchasing
new product

■

The MK350 series product or part is not available anymore.

■

The functions of the device can’t be recovered due to the damage caused by
water, strong collision, serious contamination or corrosion.

■

The product is deformed due to falling or strong collision, and the functions can’t
be recovered even if the main parts are replaced.

■

The product is aging or used in adverse environment, so many parts don’t work
normally. In this case, it has to be changed.

■

The part is not available even if it is it the warranty period.

：

- 77 -