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MultiSync® WD551

Please nd your model name in the label on the rear side of the monitor.

MODEL: WD551

LCD MONITOR

User’s Manual

Index

Important Information ...................................................................................................................English-3

Safety Precautions and Maintenance ..............................................................................English-3

Recommended Use & Maintenance .............................................................................................English-9

Features .......................................................................................................................................English-10

Contents .......................................................................................................................................English-11

Installation ....................................................................................................................................English-12

Setup Overview ................................................................................................................English-12

Mounting (for customer) ...................................................................................................English-14

Mounting (for NEC qualied personnel) ...........................................................................English-14

Parts Name and Functions ...........................................................................................................English-17

Control Panel ...................................................................................................................English-17

Terminal Interface.............................................................................................................English-18

Wireless Remote Control .................................................................................................English-19

Operating Range for the Remote Control ........................................................................English-20

Power Indicator ................................................................................................................English-20

Active pen ........................................................................................................................English-21

Charger ............................................................................................................................English-22

Connection ...................................................................................................................................English-23

Wiring Diagram ................................................................................................................English-23

Connections .....................................................................................................................English-23

Install the cable clamps ....................................................................................................English-23

Computer and USB Connection .......................................................................................English-24

Connecting to a Computer with USB Type-C ...................................................................English-24

Connecting to a Computer with HDMI..............................................................................English-24

Connecting a USB device ................................................................................................English-24

Connecting to a Network ..................................................................................................English-24

Input Detection Function ..................................................................................................English-25

About the Audio Settings of the Computer .......................................................................English-25

Operation Modes..............................................................................................................English-26

OSD (On-Screen Display) Controls ..............................................................................................English-27

General setting .................................................................................................................English-27

General Setting ................................................................................................................English-28

Advanced Setting .............................................................................................................English-29

External Control ............................................................................................................................English-31

Connecting interface ........................................................................................................English-31

Controlling the Monitor via RS-232C................................................................................English-32

Controlling the Monitor via LAN .......................................................................................English-33

Firmware Update ..........................................................................................................................English-34

Troubleshooting ............................................................................................................................English-35

Specications - Compatible signal list ..........................................................................................English-37

Specications - WD551 ................................................................................................................English-38

Manufacturer’s Recycling and Energy Information ......................................................................English-39

Disposing of your old NEC product ..................................................................................English-39

Energy Saving ..................................................................................................................English-39

Appendix Trademark and Software License ..............................................................................English-40

English-1

English

Cable Information

CAUTION: Use the attached specied cables with this color monitor so as not to interfere with radio and television reception.

For D-Sub 9-Pin, USB, HDMI and USB-C please use a shielded signal cable.

Use of other cables and adapters may cause interference with radio and television reception.

FCC Information

WARNING: The Federal Communications Commission does not allow any modications or changes to the unit EXCEPT those

specied by NEC Display Solutions of America, Inc. in this manual. Failure to comply with this government regulation could void

your right to operate this equipment.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the

FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.

This equipment generates, uses, and can radiate radio frequency energy, and, if not installed and used in accordance with

the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will

not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can

be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of

the following measures:

● Reorient or relocate the receiving antenna.

● Increase the separation between the equipment and receiver.

● Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

● Consult your dealer or an experienced radio/TV technician for help.

If necessary, the user should contact the dealer or an experienced radio/television technician for additional suggestions.

The user may nd the following booklet, prepared by the Federal Communications Commission, helpful: “How to Identify and

Resolve Radio-TV Interference Problems.” This booklet is available from the U.S. Government Printing Ofce, Washington,

D.C., 20402, Stock No. 004-000-00345-4.

SUPPLIER’S DECLARATION OF CONFORMITY

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions. (1) This device may

not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause

undesired operation.

U.S. Responsible Party: NEC Display Solutions of America, Inc.

Address: 3250 Lacey Rd, Ste 500

Downers Grove, IL 60515

Tel. No.: (630) 467-3000

Type of Product: Display Monitor

Equipment Classication: Class B Peripheral

Model: WD551

• The intended primary use of this product is as an Information Technical Equipment in an ofce or domestic environment.

• The product is intended to be connected to a computer and is not intended for the display of television broadcast signals.

English-2

(For Customers in U.K.)

IMPORTANT

• The wires in this mains lead are coloured in accordance with the following code:

GREEN-AND-YELLOW: “Earth”

BLUE: “Neutral”

BROWN: “Live”

• As the colours of the wires in the mains lead of this apparatus may not correspond with the coloured markings identifying the

terminals in your plug proceed as follows:

• The wire which is coloured GREEN-AND-YELLOW must be connected to the terminal in the plug which is marked by the letter E

or by the safety earth symbol or coloured green or green-and-yellow.

• The wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured black.

• The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured red.

• Ensure that your equipment is connected correctly. If you are in any doubt consult a qualied electrician.

“WARNING: THIS APPARATUS MUST BE EARTHED.”

NOTE: (1) The contents of this manual may not be reprinted in part or whole without permission.

(2) The contents of this manual are subject to change without notice.

(3) Great care has been taken in the preparation of this manual; however, should you notice any questionable points,

errors or omissions, please contact us.

(4) The image shown in this manual is indicative only. If there is inconsistency between the image and the actual

product, the actual product shall govern.

(5) Notwithstanding articles (3) and (4), NEC will not be responsible for any claims on loss of prot or other matters

deemed to result from using this device.

(6) This manual is commonly provided to all regions so they may contain descriptions that are pertinent for other

countries.

English-3

English

Important Information

Safety Precautions and Maintenance

FOR OPTIMUM PERFORMANCE, PLEASE NOTE

THE FOLLOWING WHEN SETTING UP AND

USING THE LCD COLOR MONITOR:

About the Symbols

To ensure safe and proper use of the product, this manual uses a number of symbols to prevent injury to you and others as well

as damage to property. The symbols and their meanings are described below. Be sure to understand them thoroughly before

reading this manual.

WARNING Failing to heed this symbol and handling the product incorrectly could result in accidents leading

to major injury or death.

CAUTION Failing to heed this symbol and handling the product incorrectly could result in personal injury or

damage to surrounding property.

Examples of symbols

Indicates a warning or caution.

This symbol indicates you should be careful of electric shocks.

Indicates a prohibited action.

This symbol indicates something that must be prohibited.

Indicates a mandatory action.

This symbol indicates that the power cord should be unplugged from the power outlet.

WARNING

1UNPLUG THE

POWER CORD

Unplug the power cord if the product malfunctions.

Should the product emit smoke or strange odors or sounds, or if the product has been dropped

or the cabinet broken, turn off the product’s power, then unplug the power cord from the power

outlet. Contact your dealer for repairs.

Never try to repair the product on your own. Doing so is dangerous.

Do not open or remove the product’s cabinet.

Do not disassemble the product.

There are high voltage areas in the product. Opening or removing product covers and modifying

the product may expose you to electric shock, re, or other risks.

Refer all servicing to qualied service personnel.

Do not use the product if it has structural damage.

If you notice any structural damage such as cracks or unnatural wobbling, please refer servicing

to qualied service personnel. If the product is used in this condition, the product may fall or

cause personal injury.

English-4

WARNING

Handle the power cord with care. Damaging the cord could lead to re or electric shock.

• Do not place heavy objects on the cord.

• Do not place the cord under the product.

• Do not cover the cord with a rug, etc.

• Do not scratch or modify the cord.

• Do not bend, twist or pull the cord with excessive force.

• Do not apply heat to the cord.

If the cord gets damaged (exposed core wires, broken wires, etc.), turn off the product’s power,

then unplug the power cord from the power outlet. Ask your dealer to replace it.

5Do not touch the power plug if you hear thunder. Doing so could result in electric shock.

Please use the power cord provided with this product in accordance with the power cord table.

If a power cord is not supplied with this product, please contact NEC. For all other cases, please

use the power cord with the plug style that matches the power socket where the product is

located. The compatible power cord corresponds to the AC voltage of the power outlet and has

been approved by, and complies with, the safety standards in the country of purchase.

For proper installation it is strongly recommended to use a trained service person.

Failure to follow the standard installation procedures could result in damage to the product or

injury to the user or installer.

Please install the product in accordance with the following information.

This product cannot be used or installed without the table top stand or other mounting accessory

for support.

When transporting, moving, or installing the product, please use as many people as necessary

to be able to lift the product without causing personal injury or damage to the product.

We recommend two or more people.

Please refer to the instructions included with the optional mounting equipment for detailed

information about attaching or removing.

Do not cover the vent on the product. Improper installation of the product may result in damage

to the product, an electric shock or re.

Do not install the product in the locations below:

• Poorly ventilated spaces.

• Near a radiator, other heat sources, or in direct sunshine.

• Continual vibration areas.

• Humid, dusty, steamy, or oily areas.

• Outdoors.

• High-temperature environment where humidity changes rapidly and condensation is likely to

occur.

• A ceiling or wall that is not strong enough to support the product and mounting accessories.

Do not mount the product upside down.

English-5

English

WARNING

Prevent tipping and falling for earthquakes or other shocks.

To prevent personal injury or damage to the product caused by tipping over due to earthquakes

or other shocks, make sure to install the product in a stable location and take measures to

prevent falling.

The measures to prevent falling and tipping are intended for reducing the risk of injury, but may

not guarantee the effectiveness against all earthquakes.

The product may tip causing personal injury.

• When using the product with the optional table top stand, fasten the product to a wall using a

cord or chain that can support the weight of the product in order to prevent the product from

falling. Fasten the cord or chain to the product using the clamps and screws provided with the

product or the table top stand.

Depending on the table top stand, the stand has the structure for preventing tipping.

Please refer to the table top stand manual.

• Be sure to remove the cord or chain from the wall before moving the product to prevent

personal injury or damage to the product.

The product may fall causing personal injury.

• Do not attempt to hang the product using an installation safety wire.

• Please install the product in an area on the wall or ceiling strong enough to support the weight

of the product.

• Prepare the product using mounting accessories, such as hook, eyebolt, or mounting parts,

and then secure the product with a safety wire. The safety wire must not be tight.

• Please make sure the mounting accessories are strong enough to support the product weight

and size before installing it.

Stability Hazard.

The product may fall, causing serious personal injury or death. To prevent injury, this product

must be securely attached to the oor/wall in accordance with the installation instructions.

Many injuries, particularly to children, can be avoided by taking simple precautions such as:

• ALWAYS use stands or installation methods recommended by the manufacturer of the

product set.

• ALWAYS use furniture that can safely support the product.

• ALWAYS ensure the product is not overhanging the edge of the supporting furniture.

• ALWAYS educate children about the dangers of climbing on furniture to reach the product or

its controls.

• ALWAYS route cords and cables connected to your product so they cannot be tripped over,

pulled or grabbed.

• NEVER place a product in an unstable location.

• NEVER place the product on tall furniture (for example, cupboards or bookcases) without

anchoring both the furniture and the product to a suitable support.

• NEVER place the product on cloth or other materials that may be located between the product

and supporting furniture.

• NEVER place items that might tempt children to climb, such as toys and remote controls, on

the top of the product or furniture on which the product is placed.

• If the existing product is going to be retained and relocated, the same considerations as

above should be applied.

10 Do not place this product on a sloping or unstable cart, stand or table. Doing so could lead to

falling or tipping and cause personal injury.

Do not insert objects of any kind into the cabinet slots. It may cause electric shock, re, or

product failure. Keep objects away from children and babies.

If objects get into the cabinet slot, turn off the product’s power, then unplug the power cord from

the power outlet. Contact your dealer for repairs.

English-6

WARNING

Do not spill any liquids into the cabinet or use your product near water.

Immediately turn off the power and unplug your product from the wall outlet, then refer servicing

to qualied service personnel. It may cause an electric shock or start a re.

13 Do not use ammable gas sprays to remove dust when cleaning the product. Doing so could

lead to a re.

Do not open the fuse cover, remove or replace the fuse.

It may cause electric shock.

English-7

English

CAUTION

Handling the power cord.

Handle the power cord with care. Damaging the cord could lead to re or electric shock.

• When connecting the power cord to the product’s AC IN terminal, make sure the connector is

fully and rmly inserted.

• Fasten the power cord to the product by attaching the screw and clamp to prevent loose

connection. (Recommended Fasten Force: 29.5 - 49 N•cm).

• Do not connect or disconnect the power cord with wet hands.

• When connecting or disconnecting the power cord, pull the power cord out by holding onto its

plug.

• When cleaning the product, for safety purposes, unplug the power cord from the power outlet

beforehand. Regularly dust off the power cord by using a soft dry cloth.

• Before moving the product, make sure the product power is off, then unplug the power cord

from the power outlet and check that all cables connecting the product to other devices are

disconnected.

• When you are not planning to use the product for an extended period of time, always unplug

the power cord from the power outlet.

• This equipment is designed to be used in the condition of the power cord connected to the

earth. If the power cord is not connected to the earth, it may cause electric shock. Please

make sure the power cord is connected to the wall outlet directly and earthed properly. Do not

use a 2-pin plug converter adapter.

2Do not bind the power cord and the USB cable. It may trap heat and cause a re.

Do not connect to a LAN with excessive voltage.

When using a LAN cable, do not connect to a peripheral device with wiring that might have

excessive voltage. Excessive voltage on the LAN port may cause an electric shock.

Do not climb on the table where the product is installed. Do not install the product on a wheeled

table if the wheels on the table have not been properly locked. The product may fall, causing

damage to the product or personal injury.

Installation, removal, and height adjustment of the optional table top stand.

• When installing the table top stand, handle the unit with care to avoid pinching your ngers.

• Installing the product at the wrong height can cause tipping.

Please install your product at proper height to prevent personal injury or damage to the

product.

6Do not push or climb on the product. Do not grab or hang onto the product.

The product may fall, causing damage to the product or personal injury.

7Do not impact the LCD panel surface, it can cause serious damage to the product or personal

injury.

Incorrect usage of batteries can result in leaks or bursting.

• Insert batteries matching the (+) and (-) signs on each battery to the (+) and (-) signs of the

battery compartment.

• Do not mix battery brands.

• Do not combine new and old batteries. This can shorten battery life or cause liquid leakage of

batteries.

• Remove dead batteries immediately to prevent battery acid from leaking into the battery

compartment.

• Do not touch exposed battery acid, it may injure your skin.

• Disposal of a battery into re or a hot oven, or mechanically crushing or cutting of a battery,

can result in an explosion.

• Leaving a battery in an extremely high temperature surrounding environment, or a battery

subject to extremely low air pressure, can result in an explosion or the leakage of ammable

liquid or gas.

• Contact your dealer or local authorities when disposing of batteries.

English-8

CAUTION

9Suitable for entertainment purposes at controlled luminous environments, to avoid disturbing

reections from the screen.

To ensure the product’s reliability, please clean the ventilation holes at the rear side of the

cabinet at least once a year to remove dirt and dust. Failure to do so could lead to re or electric

shock or damage to the product.

Power Cord Table

Plug Type North America European Continental U.K. Japanese

Plug Shape

Region U.S.A./Canada EU U.K. Japan

Voltage 120* 230 230 100

* Please use this power cord under 125 V power supply.

NOTE: This product can only be serviced in the country where it was purchased.

Image Persistence

Image persistence occurs when a residual or “ghost” image of a previous image remains visible on the screen. Unlike CRT

monitors, LCD monitors’ image persistence is not permanent, but a still image being displayed for a long period of time should

be avoided.

To alleviate image persistence, turn off the monitor for as long as the previous image was displayed. For example, if an image

was on the monitor for one hour and a residual image remains, the monitor should be turned off for one hour to erase the image.

NOTE: As with all personal display devices, NEC DISPLAY SOLUTIONS recommends using a moving screen saver at

regular intervals whenever the screen is idle, or turn off the monitor when not in use.

English-9

English

Recommended Use & Maintenance

Recommended Use

Ergonomics

To realize the maximum ergonomic benets, we recommend the following:

• For optimum performance of the monitor, allow 20 minutes for warming up. Avoid reproduction of still patterns on the monitor

for long periods of time to avoid image persistence (after image effects).

• Rest your eyes periodically by focusing on an object at least 5 feet away. Blink often.

• Position the monitor at a 90° angle to windows and other light sources to minimize glare and reections.

• Adjust the monitor’s brightness controls to enhance readability.

• Get regular eye checkups.

• Use the preset Size and Position controls with standard input signals.

• Use the preset color settings.

• Use non-interlaced signals.

• Do not view the primary color blue on a dark background. It is difcult to see and may cause eye fatigue due to insufcient

contrast.

Maintenance

Cleaning the LCD Screen

• When the LCD screen is dusty, please gently wipe with a soft cloth.

• Clean the LCD screen surface with a lint-free, non-abrasive cloth. Avoid using any cleaning solution or glass cleaner!

• Please do not rub the LCD screen with a hard or abrasive material.

• Please do not apply pressure to the LCD screen surface.

• Please do not use OA cleaner as it will cause deterioration or discoloration on the LCD screen surface.

Cleaning the Cabinet

• Unplug the power supply.

• Gently wipe the cabinet with a soft cloth.

• To clean the cabinet, dampen the cloth with a neutral detergent and water, wipe the cabinet and follow with a dry cloth.

NOTE: DO NOT clean with benzene thinner, alkaline detergent, alcoholic system detergent, glass cleaner, wax, polish

cleaner, soap powder, or insecticide. Rubber or vinyl should not be in contact with the cabinet for an extended period

of time. These types of uids and materials can cause the paint to deteriorate, crack or peel.

English-10

Features

Windows Certied

Microsoft certied “Windows collaboration display”.

Microsoft certied “Azure Certied Device”.

Featuring Microsoft Teams certied 4k cameras, microphones, and speakers.

Simple and convenient

- Connects to a computer with a single USB Type-C cable.

- Equipped with a 4k camera, microphone, and speaker.

- Input detection automatically switches the input terminal when connecting a computer.

- Operate a connected computer via the touch panel.

- Provides a power supply of up to 65W from the USB Type-C port and charges a connected computer while using the monitor.

Equipped with various sensors

- Presence sensor detects when people are present in the room and automatically turns the display on or off. This setting can

be enabled or disabled (see ).page 29

- Temperature, humidity, light, and CO2 sensor data can be uploaded to the cloud, and the environment data can be evaluated

using a cloud service. (Please contact your dealer for cloud service information.)

English-11

English

Contents

Your new monitor box* should contain the following:

• LCD monitor • Wireless Remote Control and AAA Batteries x 2*2

• Power cord*1 • Active Pen x 2, Charger

• Bracket(for Charger) • USB Type-C Cable

• Power cord clamp • Cable clamp x 2*3

• Setup Manual • Bracket (for charger) mounting screw (spare) x 2*

Setup Manual Power cord

clamp

Cable clamp x 2*3

USB Type-C Cable Active Pen x 2, Charger

Wireless Remote Control

and AAA Batteries x 2*2

Power cord*1

Bracket (for Charger) Bracket (for charger)

mounting screw (spare) x 2*3

Setup Manual

* Remember to save your original box and packing material to transport or ship the monitor.

*1 Type and number of power cords included will depend on the where the LCD monitor is to be shipped. When more than one

power cord is included, please use a power cord that matches the AC voltage of the power outlet and has been approved by

and complies with the safety standard of your particular country.

*2 Depending on the country where the LCD monitor is shipped to, AAA batteries are not included in the box contents.

*3 Added from July 2022 production.

*4 Use the screws already installed to the main unit to install the bracket (see ).page 22

English-12

CAUTION:

For proper installation, it is strongly recommended to use a trained, NEC authorized service person. Failure to follow NEC

standard mounting procedures could result in damage to the equipment or injury to the user or installer. Product warranty does

not cover damage caused by improper installation remodeling or natural disasters. Failure to follow these recommendations

could result in voiding the warranty.

Installation

Setup Overview

1. Determine the installation location

CAUTION:

• Installing your LCD monitor must be done by a qualied

technician. Contact your supplier for more information.

• Moving or installing the LCD monitor must be done by two

or more people. Failure to follow this caution may result in

injury if the LCD monitor falls.

• Do not mount or operate the monitor upside down.

NOTE:

To avoid scratching the LCD panel, always place a soft

cloth, such as a blanket that is larger than the monitor’s

screen area, on the table before laying the monitor face

down when installing the mounting accessories.

2. Install the remote control batteries

The remote control is powered by two 1.5V AAA batteries.

To install or replace batteries:

A B C

A. Press-and-hold the lock tab, then lift the battery

compartment cover from the remote control.

B. Align the batteries according to the (+) and (–) indications

inside the case.

C. Replace the cover.

NEC recommends the following battery use:

CAUTION:

Incorrect usage of batteries can result in leaks or bursting.

• Place “AAA” size batteries matching the (+) and (-) signs

on each battery to the (+) and (-) signs of the battery

compartment.

• Do not mix battery brands.

• Do not combine new and old batteries. This can shorten

battery life or cause liquid leakage of batteries.

• Remove dead batteries immediately to prevent battery

acid from leaking into the battery compartment.

• Do not touch exposed battery acid, it may injure your skin.

NOTE:

If you do not intend to use the Remote Control for a long

period of time, remove the batteries.

3. Connect external equipment

Refer to the user’s manual of your equipment for further

information.

4. Connect the supplied power cord

• The equipment should be installed close to an easily

accessible power outlet.

• Fasten the power cord to the LCD monitor by attaching the

clamper.

• Fully insert the Plug into the power outlet socket.

A loose connection may cause image degradation.

WARNING:

• Please refer to the “Important Information” section of this

user’s manual for proper selection of an AC power cord.

(Recommended Fasten Force: 29.5 - 49 N•cm)

English-13

English

5. Cable information

CAUTION:

Use the provided specied cables with this color monitor so

as not to interfere with radio and television reception.

For D-Sub 9-Pin, USB, HDMI, and USB Type-C please use

a shielded signal cable.

Use of other cables and adapters may cause interference

with radio and television reception.

When using USB-C port for video / audio, please use

SuperSpeed USB (USB 3.2 Gen 1) cable with USB

compliance logo.

6. Power ON and OFF Modes

Switch the main power to the ON position.

Press the button on the Control Panel or button on the

Remote Control to turn on the monitor.

The monitor’s power LED indicates the current status of the

monitor. Please refer to the table for information about the

LED indicator.

It is possible to shift to standby mode by holding down the

button on the main unit for 2 seconds during operation

OFF

Main Power Switch

Power Button

POWER ON button

NOTE: When connected with a computer, switch on the

power of the computer rst.

English-14

Mounting (for customer)

WARNING:

DO NOT mount the monitor yourself. This device cannot

be used or installed without a mounting accessory for

support. For proper installation, it is strongly recommended

to use a trained, qualied technician. Failure to follow NEC

standard mounting procedures could result in damage to

the equipment or injury to you. Please contact your supplier

as they may be able to provide a list of qualied installation

professionals. Mounting on a wall or ceiling and hiring a

technician is the customer’s responsibility.

Maintenance

• Periodically check for loose screws, gaps, distortions,

or other problems that may occur with the mounting

equipment. If a problem is detected, please refer to

qualied personnel for service.

• Regularly check the mounting location for signs of damage

or weakness that may occur over time.

DO NOT block ventilated openings with mounting

accessories or other accessories.

Mounting (for NEC qualied personnel)

Stability Hazard.

The device may fall, causing serious personal injury or death.

To prevent injury, this device must be securely attached to

the oor/wall in accordance with the installation instructions.

Carefully inspect the location where the unit is to be

mounted. Not all walls or ceilings are capable of supporting

the weight of the unit. Weight of this monitor is mentioned in

the Specication (see ).page 38

Product warranty does not cover damage caused by

improper installation, re-modeling, or natural disasters.

Failure to comply with these recommendations could result in

voiding the warranty.

To ensure safe installation, use two or more brackets to

mount the unit. Mount the unit to at least two points on the

installation location.

WARNING:

Failure to follow NEC standard mounting procedures could

result in damage to the equipment or injury to the user or

installer.

Please note the following when mounting on wall or ceiling

• NEC recommends mounting interfaces that comply with

UL1678 standard in North America.

• NEC strongly recommends using size M8 screw

(18-20 mm + thickness of bracket and washers in length).

If using screws longer than 18-20 mm, check the depth of

the hole. (Recommended Fasten Force:1000 - 1200N•cm).

• Prior to mounting, inspect the installation location to

ensure that it is strong enough to support the weight of the

unit so that the unit will be safe from harm.

• For detailed information, refer to the instructions included

with the mounting equipment.

• Make sure that there is no gap between the monitor and

the bracket.

Screw

Unit

18-20 mm Thickness of bracket

and washers

No gap

Washers

Mounting Bracket

No thread 2 mm

Installing a safety wire

CAUTION:

The monitor may fall causing damage to the monitor or

personal injury. To prevent the monitor from falling off from

the wall or ceiling, NEC strongly recommends using a safety

wire.

• Do not attempt to hang the monitor using an installation

safety wire. The monitor must be properly installed.

• Please install the monitor in a spot of the wall or ceiling

strong enough to support the monitor.

• To prevent the monitor from falling off from the wall or

ceiling, NEC strongly recommends using a safety wire.

• Prepare the monitor using mounting accessories such

as hook, eyebolt or mounting parts and then secure the

monitor with a safety wire. The safety wire must not be

tight.

• Please make sure the mounting accessories are strong

enough to support the monitor before mounting it.

English-15

English

Mounting location

CAUTION:

Improper installation of the monitor may result in damage

to the monitor, an electric shock or re. Do not install the

monitor in the locations below:

• DO NOT install in locations where a door or gate can hit

the unit.

• DO NOT install in areas where the unit will be subjected to

strong vibrations and dust.

• DO NOT install the monitor next to a location where the

main power supply is fed into the building.

• DO NOT install the monitor in a location where people

can easily grab and hang onto the unit or the mounting

equipment.

NOTE:

• The ceiling or wall must be strong enough to support the

monitor and mounting accessories.

• To avoid scratching the LCD panel, always place a soft

cloth, such as a blanket that is larger than the monitor’s

screen area, on the table before laying the monitor face

down when installing the monitor stand or mounting

accessories.

• Be careful not to crush the camera or buttons.

Attaching Mounting Accessories

The monitor is designed for use with a mounting system.

Be careful to avoid tipping the monitor when attaching

accessories.

inch Spec. (A x B) Standard screw

(C x D)

Quantity

WD551 400 x 200 mm M8 x 25 mm 4

Mounting accessories can be attached with the monitor in the

face down position. Make sure there is nothing on the table

that can damage the monitor.

NOTE: Prior to installation, place the monitor face down

on a at even surface that is larger than the

monitor screen. Use a sturdy table that can easily

support the weight of the monitor.

Ventilation Requirements

When mounting in an enclosed space or recessed area,

leave adequate room between the monitor and the enclosure

to allow heat to disperse, as shown below.

150 mm

100 mm

150 mm

27 mm

Allow adequate ventilation or provide air conditioning around

the monitor, so that heat can properly dissipate away from

the unit and the mounting equipment.

English-16

Initial Setup

When using the monitor for the rst time, follow the screen

instructions to perform the initial setup.

1. Start the initial setup

Press the [Start] button to start the initial setup.

2. Select a language

Select the language for the OSD menu.

You can select a language from the following 9 available

languages.

English / French / German / Spanish / Italian / Russian /

Swedish / Chinese / Japanese

3. Select a mode

Select the operation mode of the monitor.

Select the WCD mode to fully use the functions of the

monitor.

4. Set the time

Select whether to set the time automatically or manually.

To set the time automatically, connect the monitor to a

network using the LAN port and select a time zone.

To set the time manually, disable [Network Time].

Set the date and time after selecting the time zone.

5. Initialization complete

The Welcome screen is displayed when the initial setup is

complete.

Produktspecifikationer

Varumärke:	Nec
Kategori:	Övervaka
Modell:	MultiSync WD551
Färg på produkten:	Blauw
Vikt:	17 g
Blåtand:	Ja
Bluetooth-version:	4.0
Bluetooth-profiler:	A2DP, AVRCP, HFP, HSP
Anslutningsteknik:	Draadloos
Medföljande kablar:	USB
Förvaringsväska:	Ja
Bärmetod:	In-ear
Rekommenderad användning:	Sporten
Typ av headset:	Stereofonisch
Placera högtalare hörlurar:	Intraauraal
Mikrofontyp:	In lijn
Batteri/Batteri laddningstid:	2 uur
Standbytid:	240 uur
Taltid:	8 uur
Typ produkt:	Headset