dahua E231 Series LED Monitor User Manual

dahua E231 Series LED Monitor

Product Information

Specifications
The E231 Series LED Monitor is manufactured by Zhejiang Dahua Vision Technology Co., Ltd. It is a high-quality LED monitor designed for various applications. The following are the available models

• DHI-LM24-E231
• DHI-LM27-E231

Safety Instructions
The user manual provides important safety instructions that should be followed to ensure the safe and proper use of the device. The manual uses signal words to indicate the level of potential hazard

result in death or serious injury.
WARNING| Indicates a medium or low potential hazard which, if not
avoided, could result in slight or moderate injury.
CAUTION| Indicates a potential risk which, if not avoided, could result
in property damage, data loss, reductions in performance, or
unpredictable results.
TIPS| Provides methods to help you solve a problem or save time.
NOTE| Provides additional information as a supplement to the
text.

Privacy Protection Notice
As the user of the device, it is important to comply with local privacy protection laws and regulations when collecting personal data of others. Measures such as providing clear identification of surveillance areas and contact information should be implemented to protect the rights and interests of individuals.

Product Usage Instructions

About the Manual
The user manual serves as a reference guide for the installation, functions, and operations of the E231 Series LED Monitor. It is important to note the following

• The manual is for reference only and slight differences may exist between the manual and the actual product.
• Operating the product in ways that are not in compliance with the manual may result in losses for which we are not liable.
• The manual will be updated according to the latest laws and regulations. For the most detailed information, refer to the paper user’s manual, CD-ROM, scan the QR code, or visit the official website.
• All designs and software are subject to change without prior notice, which may result in differences between the actual product and the manual. Contact customer service for the latest program and supplementary documentation.
• Errors or deviations in the description of functions, operations, and technical data may be present. In case of doubt or dispute, we reserve the right to provide the final explanation.
• If the manual (in PDF format) cannot be opened, try upgrading the reader software or using other mainstream reader software.
• All trademarks, registered trademarks, and company names mentioned in the manual belong to their respective owners.
• If any problems occur while using the device, visit the website, contact the supplier, or reach out to customer service for assistance.
• In case of uncertainty or controversy, we reserve the right to provide the final explanation.

Important Safeguards and Warnings
The user manual provides important safeguards and warnings to ensure the safe and proper use of the E231 Series LED Monitor. It is essential to read and follow these instructions carefully. The safeguards and warnings include

• Read and understand all instructions before using the device.
• Keep the manual in a safe place for future reference.
• Do not use the device near water or in a damp environment to prevent electric shock or damage to the device.
• Do not block any ventilation openings on the device to prevent overheating.
• Do not expose the device to direct sunlight or other heat sources.
• Do not insert any objects into the openings of the device.
• Do not use the device if it is damaged or malfunctions. Contact customer service for assistance.
• Unplug the device from the power source during lightning storms or when unused for long periods of time.
• Refer all servicing to qualified personnel. Do not attempt to disassemble or repair the device yourself.

Installation
Follow these steps to properly install the E231 Series LED Monitor

1. Choose a suitable location for the monitor, ensuring it is placed on a stable surface.
2. Connect the monitor to a power source using the provided power cable.
3. Connect the monitor to a computer or other video source using the appropriate cable (e.g., HDMI, VGA).
4. Adjust the position and angle of the monitor for optimal viewing.
5. Power on the monitor and adjust the settings as desired.

Functions and Operations
The E231 Series LED Monitor provides various functions and operations to enhance the user experience. Refer to the manual for detailed instructions on accessing and utilizing these features.

Troubleshooting
If any issues or problems arise while using the E231 Series LED Monitor, refer to the troubleshooting section in the manual for possible solutions. If the problem persists, contact customer service for further assistance.

FAQ

• Q: What should I do if the monitor does not power on?
  A: If the monitor does not power on, ensure that it is properly connected to a power source and that the power cable is securely plugged in. Try using a different power outlet or cable to eliminate potential issues. If the problem persists, contact customer service for further assistance.

• Q: How do I adjust the brightness and contrast settings?
  A: To adjust the brightness and contrast settings of the monitor, access the on-screen display (OSD) menu using the provided controls or buttons. Navigate through the menu options and locate the brightness and contrast settings. Use the corresponding buttons to increase or decrease the values as desired. Save the changes and exit the OSD menu.

• Q: Can I connect multiple devices to the monitor simultaneously?
  A: Yes, the E231 Series LED Monitor supports multiple input sources. You can connect multiple devices, such as computers, gaming consoles, or media players, to the monitor using the available ports (e.g., HDMI, VGA). Use the input selection option in the OSD menu to switch between the connected devices.

Foreword

General
This manual introduces the installation, functions and operations of the E230C Series LED Monitor Devices (hereinafter referred to as the “Devices”). Read carefully before using the device, and keep the manual safe for future reference.

Models
DHI-LM24-E231, DHI-LM27-E231.

Safety Instructions

The following signal words might appear in the manual.

Revision History

Privacy Protection Notice
As the device user or data controller, you might collect the personal data of others such as their face, fingerprints, and license plate number. You need to be in compliance with your local privacy protection laws and regulations to protect the legitimate rights and interests of other people by implementing measures which include but are not limited: Providing clear and visible identification to inform people of the existence of the surveillance area and provide required contact information.

About the Manual

• The manual is for reference only. Slight differences might be found between the manual and the product.
• We are not liable for losses incurred due to operating the product in ways that are not in compliance with the manual.
• The manual will be updated according to the latest laws and regulations of related jurisdictions. For detailed information, see the paper user’s manual, use our CD-ROM, scan the QR code or visit our official website. The manual is for reference only. Slight differences might be found between the electronic version and the paper version.
• All designs and software are subject to change without prior written notice. Product updates might result in some differences appearing between the actual product and the manual. Please contact customer service for the latest program and supplementary documentation.
• There might be errors in the print or deviations in the description of the functions, operations and technical data. If there is any doubt or dispute, we reserve the right of final explanation.
• Upgrade the reader software or try other mainstream reader software if the manual (in PDF format) cannot be opened.
• All trademarks, registered trademarks and company names in the manual are properties of their respective owners.
• Please visit our website, contact the supplier or customer service if any problems occur while using the device.
• If there is any uncertainty or controversy, we reserve the right of final explanation.

Important Safeguards and Warnings
This section introduces content covering the proper handling of the device, hazard prevention, and prevention of property damage. Read carefully before using the device, and comply with the guidelines when using it.

Operation Requirements

WARNING

• Do not tread on or squeeze the power line, especially the plug or connection point of the power line to the product.
• Please firmly grasp the plug of the connecting line when inserting and removing. Pulling the connecting line might cause damage to it.
• Turn off the power when cleaning the product.
• Do not touch any fixed components inside the product. Failure to do so can result in damage to the product or person.
• Make sure that the power supply of the device works properly before use.
• Do not pull out the power cable of the device while it is powered on.
• Only use the device within the rated power range.
• Transport, use and store the device under allowed humidity and temperature conditions.
• Prevent liquids from splashing or dripping on the device. Make sure that there are no objects filled with liquid on top of the device to avoid liquids flowing into it.
• Do not disassemble the device.
• Notice and observe all the warnings and illustrations.
• Make sure the power is turned off and the connecting lines are removed when moving the product.
• Do not use uncertified connecting lines, which might cause equipment failure.
• Avoid collisions with the product. This may cause equipment failure.
• Please turn off power for safety if not using the product for a long time.

Installation Requirements

WARNING

• Connect the device to the adapter before power on.
• Strictly abide by local electrical safety standards, and make sure that the voltage in the area is steady and conforms to the power requirements of the device.
• Do not connect the device to more than one power supply. Otherwise, the device might become damaged.
• Do not hang or lean on the product. Doing so can cause the product to fall or become damaged. It may also cause injury to people. Pay special attention when children are nearby.
• If the product is installed on the wall, please make sure the wall’s load bearing capacity is sufficient. To avoid falling and injuring people, install according to the included instructions with mounting hardware.
• Do not put the product in flammable or corrosive gaseous environment, which may cause fire or damage the product. Placing the product in proximity to flammable gas can easily result in a dangerous explosion.
• Observe all safety procedures and wear required protective equipment provided for your use while working at heights.
• Do not expose the device to direct sunlight or heat sources.
• Do not install the device in humid, dusty or smoky places.
• Install the device in a well-ventilated place, and do not block the ventilator of the device.
• Use the power adapter or case power supply provided by the device manufacturer.
• The power supply must conform to the requirements of ES1 in IEC 62368-1 standard and be no higher than PS2. Note that the power supply requirements are subject to the device label.
• Connect class I electrical appliances to a power socket with protective earthing.
• Do not block the ventilation opening. Install the product according to this handbook.
• Do not place any items on the product. The product may be damaged if foreign objects enter the internal unit.
• Failure to properly secure all screws during installation can result in a fall of the product. Ensure all mounting hardware and other installation accessories are properly secured during installation.
• Mounted height <2m.
• Protective earthing terminal. The apparatus should be connected to a mains socket outlet with a protective earthing connection.
• ~Alternating Current.

Maintenance Requirements

WARNING

• Cut off power and the connecting line immediately and contact the after-sales service center if the product or the connecting line is damaged for some reason. Continued use without maintenance might cause smoking or off-odor.
• Please turn off power or unplug the power cable immediately if there is smoking, off-odor, or abnormal noise. Contact the after-sales service center for maintenance after confirming there is no more smoke or odor. Further use could result in fire.
• Do not adjust, maintain or modify if you do not have appropriate qualifications.
• Do not open or remove the rear cover, box or cover board of the product. Please contact the dealer or after-sales service center when in need of adjustment or maintenance.
• Only qualified service people can maintain. If the product gets any kind of damage, such as damage to the plug, foreign matter or liquid into the unit, exposure to rain or humidity, loss of function, or dropped, please contact dealer or after-sales service center.
• Be careful during maintenance of product even if the power is off. Some components are equipped with UPS, and can continue to supply power which is dangerous to people.

Packing List
Table 1-1 Packing list description

The above appendix products are for reference only, the supporting products of different models of monitors may be slightly different from those in the figure, and everything is subject to reality.

Monitor Adjustments
Some displays can be angled by tilting forward and backward, and typically, it can tilt 5±2° forward and 20±2° backwards. The specific adjustment function is subject to the adjustment function of the actual model.

• Tilting angle: -5.0°(±2.0°) to +20°(±2.0°).
• When adjusting the angle of the monitor, be sure not to touch or press the area of the screen. The above figure is for reference only, and everything is subject to the actual adjustment function.

Button Description

Table 3-1 Indicator and button description

The above content is for reference only, and everything is subject to actual conditions.

4 Cable Connection

Input and-output: ports+

to the HDMI OUT interface of a PC.
AUDIO OUT| x1/ Use to connect with external sound output devices such as headphones or earphones.

The above ports are for reference only, the actual ports of different types of monitors may be slightly different from the ports in the figure, and everything is subject to the ports and functions of the  actual product.

5 Menu Description

• The color and shape of the OSD menu of the actual computer may be slightly different from that shown in the figure, and everything that has been actually displayed shall prevail.
• Specifications of the OSD menu may change with improvements of functions without prior notice. The on-screen display (OSD) menu can be used to adjust the settings of the monitor and is displayed on the screen after turning on the monitor and pressing the button.

1. Step 1 Press one of the buttons to activate the Navigation window. Table 5-1 Icon function
2. STEP 2 Press to enter the OSD screen.
3. STEP 3 Press to browse through the functions.
   • Select the desired function, then press the button to enter the submenu.
   • Press to browse the sub-menus, and then press the key to confirm the  selection of the desired function.
   • Press to select an option, then press to confirm the setting and exit the  current menu.
4. STEP4 Press  to exit the menu interface.

ECO Modes and Gameplus

1. STEP1 Press any one of the buttons ) to activate the navigation window.
2. STEP 2 Press ) button to switch ECO modes. These modes (STANDARD, MOVIE, RTS, FPS,  GAME, and TEXT) can be used to optimize settings according to your activity. Standard mode is suitable for most activities. 
3. STEP 3 Press ( ) button to switch Gameplus modes. Choose the crosshair icon best suited for your game. These game icons are primarily designed to optimize your aim during shooting games, though they can be used for other scenarios.

Operation Menu(OSD) Function Descriptions

Figure 7-1 OSD menu description

/ITALIANO/ESPAÑOL/PORTUGUÊSTURKCE/POLSKI/NEDERLANDS/PУ

ССКИЙ/한국/日本語

OSD H. POS.| 0-100
OSD V. POS.| 0-100
OSD TIMER| 5-60
TRANSPAREN

CY

| 0-100
RESET| IMAGE AUTO

ADJUST

| –
COLOR AUTO

ADJUST

| –
RESET| –
MPRT| OFF/ON
MISC| SIGNAL

SOURCE

| DP/HDMI1/HDMI2
VOLUME| 0-100
LOW BLUE

RAY

| 0-100
ADAPTIVE-

SYNC

| ON/OFF
OVER DRIVER| OFF/HIGH/MIDDLE/LOW
LED EFFECT| NORMAL/OFF/FLICKER

The OSD features in the table above are for reference only and may differ from the actual display, so the OSD features of the actual display shall prevail.

Product Specifications

Table 8-1 Product Specifications

Product Dimensions

Lifting base

| Without

base

| 539.6 x 321.3 x 64.5 mm| 619 x 365.5 x 63.7 mm
With base| 539.6 x 406.5 x 184.8 mm| 619 x 445.5 x 196.9 mm
Speaker| No| No
Height range| No| No
Rotation angle| No| No
Vertical angle| No| No
Tilting angle| Forward tilting : 5° ± 2°;    Backward tilting: 20° ± 2°
Environmental conditions| Action|

• Temperature: 0°C~ 40°C (32°F ~ 104°F)
• Humidity: 10%~90% RH (non-condensing)

Storage|

• Temperature: -20°~ 60° (-4°F ~ 140°F)
• Humidity: 5%~95% RH (non-condensing)

The above parameters are for reference only, and the parameters of the actual model shall prevail.

Appendix 1 Troubleshooting

Appendix Table 1-1 FAQ

• Check if the power is on.
• Check if the power cord is connected.

Impossible plug-and-play|

• Check if the function of plug-and-play of the device  is compatible with PC.
• Check if the display card is compatible with the plug-and-play function.

Dimming picture| Adjust brightness and contrast.
Flickering picture or

picture with ripples

| There may be electrical appliances or equipment with electronic disturbance.
The power indicator light is on (flickering),but the monitor has no pictures.|

• Check if the PC power is on.
• Check if the PC display card is inserted properly.
• Check if the signal cable of the monitor is correctly connected with the PC.
• Check the signal cable plug of the monitor and make sure everypin has no bending.
• Observe the indicator light by pressing the Caps Lock key on the PC
• keyboard and check if the PC is working.

Color shortage (red, green and blue)| Check the signal cable of the monitor and make sure every pin has no

bending.

The picture is not in the middle, or the size is not right| Hot key(A UTO)
Picture with color

difference (white looks not white)

| Adjust RGB color or reselect color temperature.
Screen font blur under VGA signal| Select the “E” to automatically adjust the image.
Screen color error under VGA signal| Select “Auto color” in OSD to correct under the white output screen.

The above workarounds are for reference only. If you have any problems, please contact the after- sales service center or find a professional to help.

Appendix  Cybersecurity Recommendations

Cybersecurity is more than just a buzzword: it’s something that pertains to every device that is connected to the internet. IP video surveillance is not immune to cyber risks, but taking basic steps toward protecting and strengthening networks and networked appliances will make them less susceptible to attacks. Below are some tips and recommendations from Dahua on how to create a more secured security system.

Mandatory actions to be taken for basic device network security

1. Use Strong Passwords
   Please refer to the following suggestions to set passwords.

   • The length should not be less than 8 characters.
   • Include at least two types of characters; character types include upper and lower case letters, numbers and symbols.
   • Do not contain the account name or the account name in reverse order.
   • Do not use continuous characters, such as 123, abc, etc.
   • Do not use overlapped characters, such as 111, aaa, etc.

2. Update Firmware and Client Software in Time

   • According to the standard procedure in Tech-industry, we recommend to keep your device (such as NVR, DVR, IP camera, etc.) firmware up-to-date to ensure the system is equipped with the latest security patches and fixes. When the device is connected to the public network, it is recommended to enable the “auto-check for updates” function to obtain timely information of firmware updates released by the manufacturer.
   • We suggest that you download and use the latest version of client software.

“Nice to have” recommendations to improve your device network security:

1. Physical Protection
   We suggest that you perform physical protection to device, especially storage devices. For example, place the device in a special computer room and cabinet, and implement well-done access control permission and key management to prevent unauthorized personnel from carrying out physical contacts such as damaging hardware, unauthorized connection of removable device (such as USB flash disk, serial port), etc.

2. Change Passwords Regularly
   We suggest that you change passwords regularly to reduce the risk of being guessed or cracked.

3. Set and Update Passwords Reset Information Timely
   The device supports password reset function. Please set up related information for password reset in time, including the end user’s mailbox and password protection questions. If the information changes, please modify it in time. When setting password protection questions, it is suggested not to use those that can be easily guessed.

4. Enable Account Lock
   The account lock feature is enabled by default, and we recommend you to keep it on to guarantee the account security. If an attacker attempts to log in with the wrong password several times, the corresponding account and the source IP address will be locked.

5. Change Default HTTP and Other Service Ports
   We suggest you to change default HTTP and other service ports into any set of numbers between  1024–65535, reducing the risk of outsiders being able to guess which ports you are using.

6. Enable HTTPS
   We suggest you to enable HTTPS, so that you visit Web service through a secure communication channel.

7. MAC Address Binding
   We recommend you to bind the IP and MAC address of the gateway to the device, thus reducing the risk of ARP spoofing.

8. Assign Accounts and Privileges Reasonably
   According to business and management requirements, reasonably add users and assign a minimum set of permissions to them.

9. Disable Unnecessary Services and Choose Secure Modes
   If not needed, it is recommended to turn off some services such as SNMP, SMTP, UPnP, etc., to reduce risks.
   If necessary, it is highly recommended that you use safe modes, including but not limited to the following services:

   • SNMP : Choose SNMP v3, and set up strong encryption passwords and authentication passwords.
   • SMTP : Choose TLS to access mailbox server.
   • FTP : Choose SFTP, and set up strong passwords.
   • AP hotspot: Choose WPA2-PSK encryption mode, and set up strong passwords.

10. Audio and Video Encrypted Transmission
    If your audio and video data contents are very important or sensitive, we recommend that you use encrypted transmission function, to reduce the risk of audio and video data being stolen during transmission.
    Reminder : encrypted transmission will cause some loss in transmission efficiency.

11. Secure Auditing

    • Check online users: we suggest that you check online users regularly to see if the device is logged in without authorization.
    • Check device log: By viewing the logs, you can know the IP addresses that were used to log in to your devices and their key operations.

12. Network Log
    Due to the limited storage capacity of the device, the stored log is limited. If you need to save the log for a long time, it is recommended that you enable the network log function to ensure that the critical logs are synchronized to the network log server for tracing.

13. Construct a Safe Network Environment
    In order to better ensure the safety of device and reduce potential cyber risks, we recommend:

    • Disable the port mapping function of the router to avoid direct access to the intranet devices from external network.
    • The network should be partitioned and isolated according to the actual network needs. If there are no communication requirements between two sub networks, it is suggested to use VLAN, network GAP and other technologies to partition the network, so as to achieve the network isolation effect.
    • Establish the 802.1x access authentication system to reduce the risk of unauthorized access to private networks.
    • Enable IP/MAC address filtering function to limit the range of hosts allowed to access the device.

More information
Please visit Dahua official website security emergency response center for security announcements and the latest security recommendations.

ENABLING A SAFER SOCIETY AND SMARTER LIVING

ZHEJIANG DAHUA VISION TECHNOLOGY CO., LTD.

• Address : No. 1399, Binxing Road, Binjiang District, Hangzhou, P. R. China |
• Website : www.dahuasecurity.com
• Postcode : 310053
• Email : dhoverseas@dhvisiontech.com
• Tel : +86-571-87688888 28933188

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