FP231W LCD Color Monitor 23.0" LCD Panel Size Users Manual

Welcome

i Copyright
Copyright 2005 by BenQ Corporation. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of BenQ Corporation.

ii Disclaimer

BenQ Corporation makes no representations or warranties, either expressed or implied, with respect to the contents hereof and specifically disclaims any warranties, merchantability or fitness for any particular purpose. Further, BenQ Corporation reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of BenQ Corporation to notify any person of such revision or changes.
Please follow these safety instructions for best performance, and long life for your monitor iii Power Safety
The AC plug isolates this equipment from the AC supply. The power supply cord serves as a power disconnect device for pluggable equipment. The socket outlet should be installed near the equipment and be easily accessible. This product should be operated from the type of power indicated on the marked label. If you are not sure of the type of power available, consult your dealer or local power company.

iv Care And Cleaning

Cleaning. Always unplug your monitor from the wall outlet before cleaning. Clean the LCD monitor surface with a lint-free, non-abrasive cloth. Avoid using any liquid, aerosol or glass cleaners. Slots and openings on the back or top of the cabinet are for ventilation. They must not be blocked or covered. Your monitor should never be placed near or over a radiator or heat source, or in a built-in installation unless proper ventilation is provided. Never push objects or spill liquid of any kind into this product.

v Servicing

Do not attempt to service this product yourself, as opening or removing covers may expose you to dangerous voltages or other risks. If any of the above mentioned misuse or other accident such as dropping or mishandling occurs, contact qualified service personnel for servicing.

i Table of Contents

Getting started..... 5 Getting to know your Monitor.... 7 Front View....7 Back View (1)....7 Back View (2): Locations of plugs & sockets..8 How to install your monitor hardware... 9 Adjusting Your Monitor...11 Getting the most from your BenQ monitor... 13 How to install the monitor on a new computer..14 How to upgrade the monitor on an existing computer..15 How to install on Windows XP systems..16 How to install on Windows 2000, ME, & 98 systems...17 How to complete the Windows Upgrade Device Driver Wizard..18 How to adjust the screen resolution.... 20 How to adjust the screen refresh rate... 21 How to set the picture optimization.... 22 How to adjust your Monitor.... 23 A Look at the Control Panel...23 Hot Key Mode....24 Main Menu Mode....24 Troubleshooting..... 33 Frequently Asked Questions (FAQ)...33 Need More Help?...34 Supported operating modes.... 35 Specifications..... 37

Table of Contents

1 Getting started
When unpacking please check you have the following items. If they are missing or are damaged, please immediately contact the dealer at which you purchased the goods. BenQ LCD Monitor

Monitor Stand

Quick Start Guide

CD-ROM Disk

Power Cord

Adapter

Getting started

Signal cable: D-Sub

USB Cable

Signal Cable: DVI-D

Audio Cable (optional)
Speaker Unit: SRS (optional)

Webcam Unit (optional)

2 Getting to know your Monitor

Front View

Back View (1)
Getting to know your Monitor
Back View (2): Locations of plugs & sockets

1. 2. 3. 4. 5. 6. 7.

Power AC Input Jack Composite Video Input S-Video Input DVI-D Connector D-Sub Connector Audio Connector USB Connectors
3 How to install your monitor hardware
Make sure that the computer and monitor's power are both turned off. Please go along with the following steps to install your LCD monitor. 1. Unpack the package and place the monitor stand firmly.
2. Align the slots on the monitor against the notches on the monitor stand.
3. Place the monitor on the monitor stand and push it forward until you hear a clicking sound.
How to install your monitor hardware
4. Connect one end of the D-Sub cable to the monitor and the other end to your computer.
5. Connect one end of the DVI-D cable to the monitor and the other end to the signal connector of your computer. (Optional).
6. Connect one end of the USB cable into the second plug (from right to left) of the monitor and the other end to your computer.
7. Connect the power plug to your monitor.
8. Routing the cables in the Cable Bracket as shown.
9. Plug the other end of the power cord in a nearby wall socket.
10. Press the Power button on the side panel of the monitor. The power indicator will light up.

Adjusting Your Monitor

Monitor Height To prevent from the springing out of the monitor stand, please press the top edge of monitor stand while you press the release button to adjust the monitor at a preferred height.

Monitor Angle

4 Getting the most from your BenQ monitor
How do I gain the most benefit from my new monitor? To gain the most benefit from your new BenQ color LCD flat screen monitor, you should install the custom BenQ LCD Monitor driver software as provided on the BenQ LCD Monitor CD-ROM. The circumstances under which you connect and install your BenQ LCD Monitor will determine which process you need to follow to successfully install the BenQ LCD Monitor driver software. These circumstances relate to which version of Microsoft Windows you are using, and whether you are connecting the monitor and installing the software onto a new computer (without existing monitor driver software), or whether you are upgrading an existing installation (which already has existing monitor driver software) with a newer monitor. In either case however, the very next time you turn on your computer (after connecting the monitor to your computer), Windows will automatically recognise the new (or different) hardware, and will launch its Found New Hardware wizard. Follow the wizard instructions until it asks you to select a monitor model. At that point, click the Have Disk button, insert the BenQ LCD Monitor CD-ROM and select the appropriate monitor model. Further details and step-by-step instructions for both an automatic (new) or upgrade (existing) installation follow. See: How to install the monitor on a new computer. How to upgrade the monitor on an existing computer

If you require a User Name and Password to login to your Windows computer, you must be logged on as an Administrator or as a member of the Administrators group in order to install the monitor driver software. Furthermore, if your computer is connected to a network which has security access requirements, network policy settings may prevent you from installing software on your computer.
Getting the most from your BenQ monitor
How to install the monitor on a new computer
This instruction details the procedure for selecting and installing the BenQ LCD Monitor driver software on a new computer which has never had a monitor driver installed before. This instruction is only suitable for a computer which has never been used before, and for which the BenQ LCD Monitor is the first ever monitor to be connected to it.
If you are adding the BenQ LCD Monitor to an existing computer that has already had another monitor connected to it (and has monitor driver software installed), you should not be following these instructions. You should instead be following the instructions for How to upgrade the monitor on an existing computer.
1. Follow the instructions in How to install your monitor hardware.
When Windows (2000 or later) starts, it will automatically detect the new monitor and launch the Found New Hardware Wizard. Follow the prompts until it displays the option to Install Hardware Device drivers.
2. Insert the BenQ LCD Monitor CD-ROM into a CD drive on the computer. 3. Check Search for a suitable driver for my device option, and click Next. 4. Check the option for CD-ROM drives (uncheck all others) and click Next. 5. Look to confirm that the wizard has selected the correct name of your monitor as "BenQ FP231W" and click Next. 6. Click Finish.
Windows will continue installing other devices it finds. If you connected the USB 2.0 hub cable to a suitable USB 2.0 port on the computer, Windows will automatically detect it and install the appropriate drivers for it. You need not do anything more to get the hub to work for you.

7. Restart the computer.

How to upgrade the monitor on an existing computer

This instruction details the procedure for manually updating the existing monitor driver software on your Microsoft Windows computer. It is currrently tested as compatible (and recommended only) for Windows 98, Windows ME, Windows 2000, and Windows XP Operating System (OS).
The BenQ LCD Monitor driver for your model may well function perfectly with other versions of Windows, however, as at the time of writing, BenQ has done no testing of this driver on other versions of Windows and cannot guarantee its operation on those systems.
Installing monitor driver software involves selecting an appropriate information file (.inf) on the BenQ LCD Monitor CD-ROM for the particular model monitor you have connected, and letting Windows install the corresponding driver files from the CD. You need only steer it in the right direction. Windows has an Upgrade Device Driver Wizard to automate the task and guide you through the file selection and installation process. See: How to install on Windows XP systems. How to install on Windows 2000, ME, & 98 systems.
How to install on Windows XP systems
1. Open Display Properties.
The quickest shortcut to Display Properties is through the Windows desktop. Right-click the desktop and select Properties from the popup menu. Alternatively, the Windows menu to Display Properties is located in Control Panel. In Windows XP version, Control Panel is located directly under the main Start menu item. The menu options displayed will depend upon which type of view is selected for your system. Under the Classic view, click Start | Control Panel | Display. Under the Category view, click Start | Control Panel | Appearance and Themes | Change the screen resolution. The Display Properties window will display.
2. Click the Settings tab and the Advanced button.
The Advanced Display Properties window will display.
3. Click the Monitor tab and select the Plug and Play Monitor from the list.
If there is only one monitor in the list, it will already be selected for you.
4. Click the Properties button.
The Monitor Properties window will display. If the driver provider is listed as BenQ, and the model matches that of your new monitor, the proper drivers are already installed, and you need do nothing further. Cancel out of these property windows. However, if BenQ is not listed as the manufacturer, or the correct model is not currently shown, you will need to continue with these instructions.

5. Click the Driver tab and the Update Driver button.
The Hardware Update Wizard will display. Follow the wizard instructions noting the steps below:
6. Insert the BenQ LCD Monitor CD-ROM into a CD drive on the computer you attached the monitor to. 7. Check the option Install from a list or specific location and click Next. 8. Check the option Search for the best driver in these locations and also check Search removable media, then click Next.
Please wait while the wizard searches for drives and the BenQ LCD Monitor CD inserted in step 6. When complete, the wizard should have found and selected the BenQ driver on the CD appropriate to your monitor model, in this case BenQ FP231W in the location d:\driver\FP231W.inf or similar.
The drive letter for your CD drive may differ from the example above depending upon your system it may be D: or E: or F: etc.
9. Select (single-click) the file named BenQ FP231W on the CD, and click the Next button.
This will copy and install the appropriate monitor driver files to your computer.

10. Click Finish.

This will close the wizard and return you to the Monitor Properties window, now renamed BenQ FP231W Properties.
11. Click Close, OK, and OK.
This will close the Display Properties windows. You do not need to restart Windows XP, as the BenQ LCD monitor drivers will operate immediately with no further action required by you.
16 Getting the most from your BenQ monitor
How to install on Windows 2000, ME, & 98 systems
You do not need to follow this instruction if you are installing onto a computer which has a Windows XP (or later) version system. In that case, see the instructions at How to install on Windows XP systems.
The quickest shortcut to Display Properties is through the Windows desktop. Right-click the desktop and select Properties from the popup menu. Alternatively, the Windows menu to Display Properties is located in Control Panel. In Windows 2000, ME, & 98 versions, Control Panel is located under the Settings menu item. Click Start | Settings | Control Panel | Display. The Display Properties window will display.

3. In Windows 2000, click the Monitor tab and the Properties button.
The Monitor Properties window will display. Alternatively, on Windows ME or 98, click the Monitor tab and the Change button. This will jump you directly to the Upgrade Device Driver Wizard, skipping the next step.
4. In Windows 2000, click the Driver tab and the Update Driver button.
The Upgrade Device Driver Wizard will display.
See How to complete the Windows Upgrade Device Driver Wizard.
How to complete the Windows Upgrade Device Driver Wizard
1. Load the BenQ LCD Monitor CD-ROM which came with your monitor.
Insert the CD-ROM into a CD drive on the computer you attached the monitor to. The autorun Users Guide language selection page will display in your web browser. You can select a language and view the online version of this manual from the next window. You could then print it out for reference if you wish to work off-line. When youre ready, Cancel the browser as it is not required for the Windows Upgrade Device Driver Wizard.
2. Launch the Windows Upgrade Device Driver Wizard and click Next.
For instructions, see How to install on Windows 2000, ME, & 98 systems.
3. Check the option Display a list of known drivers. and click Next. 4. Click the Have Disk button.
The Install From Disk window will display.
5. Click the Browse button and navigate to the BenQ LCD Monitor CD-ROM.
This is the CD you loaded in step 1 above. The CD Drive will have a Windows designated drive letter (like D: or E: or F:). Select the drive letter corresponding to the drive you put the CD into.
6. Double-click the folder labelled Driver.
The contents of the Driver folder will display.
7. Click the Open button.
This will return you to the Install from Disk window, and it will have entered the address to the BenQ LCD Monitor CD Driver folder into the field titled Copy manufacturers files from:. The field will contain something like "D:\Driver", or "E:\Driver", or "F:\Driver".

8. Click the OK button.

This will return you to the Upgrade Device Driver Wizard.
9. Select (single-click) the file named BenQ FP231W, and click the Next button. 10. Click Next.
This will copy the appropriate monitor driver files to your computer.

11. Click Finish.

On Windows 2000, this will close the wizard and return you to the Monitor Properties window, now renamed BenQ FP231W Properties. Alternatively, on Windows ME and 98, this will return you to the Advanced Display Properties window, skipping the next step. Should you wish to do so, this is where you can change the screen refresh rate and other monitor properties to suit your needs. See How to adjust the screen refresh rate for details.

12. In Windows 2000, click Close.
This will close the BenQ FP231W Properties window and return you to the Advanced Display Properties window. Should you wish to do so, this is where you can change the screen refresh rate and other monitor properties to suit your needs. See How to adjust the screen refresh rate for details.
13. In Windows 2000, click OK, or in Windows 98 or ME, click Close.
This will close the Advanced Display Properties window, and return you to the Display Properties window.
18 Getting the most from your BenQ monitor
Should you wish to do so, this is where you can change the screen resolution (area and color). See How to adjust the screen resolution for details.

14. Click OK.

This will close the Display Properties window, and if you made any changes to the screen resolution, Windows 2000 will prompt you for confirmation to effect the changes, and further confirmation to accept the changes. Click OK and Yes respectively. Alternatively, Windows ME or 98 will ask you if want to make the changes and reboot or not reboot. You should select the reboot option as this causes Windows to load the new drivers when it next restarts.
How to adjust the screen resolution 1
Due to the nature of liquid crystal display (LCD) technology, the picture resolution is always fixed. The best possible picture for your FP231W is achieved with a resolution of 1920x1200. This is called Native Resolution or maximal resolution that is, the clearest picture. Lower resolutions are displayed on a full screen through an interpolation circuit. However flaws do occur with the interpolated resolution.
To take full advantage of LCD technology you should select the native resolution setting of 1920x1200.
1. Open Display Properties and select the Settings tab.
You can open Display Properties by right-clicking on the Windows desktop and selecting Properties from the pop-up menu.
2. Use the slider in the Screen area section to adjust the screen resolution.
Select the recommended resolution of 1920x1200 then click Apply.
If you select some other resolution, be aware that this other resolution is interpolated and may not accurately display the screen image as well as it could do at the native resolution setting.
3. Click OK then Yes. 4. Close the Display Properties window.
How to adjust the screen resolution
How to adjust the screen refresh rate 1
You dont have to choose the highest possible refresh rate on an LCD display, because it is not technically possible for an LCD display to flicker. The best results are obtained by using the factory modes already set in your computer. There is a table with the factory modes in the specification section of this Users Manual.

You can choose 60 Hertz for the native resolution of 1920x1200.
1. Double click the Display icon in Control Panel. 2. From the Display Properties window, select the Settings tab and click the Advanced button. 3. Select the Adapter tab, and select an appropriate refresh rate to match one of the applicable factory modes as listed in the specification table. 4. Click Change, OK, then Yes. 5. Close the Display Properties window.
How to adjust the screen refresh rate
How to set the picture optimization 1
The easiest way to obtain an optimal display is to use the i key function. Press the i key to optimize and adjust the screen settings automatically for you. Refer to How to adjust your Monitor for button locations and functionality. If you wish to, you can always adjust the screen settings manually using the buttons on the monitor panel. To assist you in this endeavour, BenQ has provided a screen test image utility which you can use to check for screen color, grayscale and line gradient display. 1. Run the test program auto.exe from CD-ROM. You could also use any other image, such as the desktop of your operating system. However, we recommend that you use auto.exe. As you run auto.exe, a test pattern displays. 2. Press the Enter key to access the monitor On-Screen Display (OSD) menu. 3. If you notice a vertical noise, press the t or u keys to select Geometry and press the Enter key. Then press thet or u keys to select Pixel Clock and press the Enter key again. Then, press thet or u key to adjust the monitor until the noise disappears. 4. If you notice a horizontal noise, press thet or u keys to select Geometry and press the Enter key. Then press thet or u keys to select Phase and press the Enter key again. Then, press t or u keys to adjust the monitor until the noise disappears. To make sure the i key function performs well, you have to select one of the supported modes. If the i key does not work properly and the NON PRESET MODE message is on the OSD, it means you are not using one of the supported modes. Please set your monitor to use one of the supported modes as listed at the end of this manual.
How to set the picture optimization
8 How to adjust your Monitor
A Look at the Control Panel
There are 7 keys for users control including Enter, t , u, Exit, "Input" and iKey and a power switch. The following descriptions are the introduction of these keys & switch. 1. Power: Turn the power on or off. 2. Enter key: Activate OSD, enter sub menu, select items, confirm selection. 3. 4.
t (Up) key: For Up/Increase adjustment. The key is also the hot key for Brightness. u (Down) key: For Down/Decrease adjustment. The key is also the hot key for Contrast.
5. Exit key: Back to previous menu or exit OSD. 6. "Input" key: Switch the input signal. 7. iKey : Adjust vertical position, phase, horizontal position and pixel clock automatically.

How to adjust your Monitor

Hot Key Mode

Brightness and Contrast hot key Press t to enter Brightness menu, press t or u key to adjust the degree of brightness and press Exit to exit OSD.
Press uto enter Contrast menu, press t or u key to adjust the degree of Contrast and press Exit to exit OSD.
Input hot key Press the "Input" key to enter Input menu, and press t or u key to indicate the input source and press "Enter." When done, press Exit to exit OSD.

Main Menu Mode

Control Functions Available in Main Menu Main Menu

Luminance sub menu

Press t or u key to adjust the degree of Brightness, press Exit to return to the previous menu.
Press t or u key to adjust the degree of Contrast, press Exit to return to the previous menu.

Geometry sub menu

Press t or u key to adjust the Horizontal Position, press Exit to return to previous menu.
Press t or u key to adjust the Vertical Position, press Exit key to return to previous menu.
Press t or u key to adjust the value of the Pixel Clock, press Exit to return to previous menu.
Press t or u key to adjust the degree of Phase, press Exit to return to previous menu.

Color sub menu

User Preset: User may set the color balance of Red, Green and Blue.

OSD sub menu

Press t or u key to adjust the Horizontal Position of the OSD, press Exit to return to previous menu.
Presstor u key to adjust the Vertical Position of the OSD, press Exit to return to previous menu.
Press t or u key to adjust the display time of the OSD, press Exit to return to previous menu.

Languages sub menu

PIP sub menu
Press t or u key to indicate the PIP Source as S-Video or Composite, or choose Off to disable this function. When done, press "Enter" to activate the settings. To return to previous menu, press "Exit."
Press t or u key to specify the PIP Size. When done, press "Enter" to innitiate the settings. Press "Exit" to return to previous menu.

Press t or u key to set the PIP Brightness value between 0 and 100. When done, press "Enter" to innitiate the settings. Press "Exit" to return to previous menu.
Press t or u key to set the PIP Contrast value between 0 and 100. When done, press "Enter" to innitiate the settings. Press "Exit" to return to previous menu.
Press t or u key to adjust the the Horizontal Position of PIP. This is a value between 0 and 100. When done, press "Enter" to activate the settings. To return to previous menu, press "Exit."
Press t or u key to adjust the the Vertical Position of PIP. This is a value between 0 and 100. When done, press "Enter" to activate the settings. To return to previous menu, press "Exit."
Press t or u key to adjust the value of Hue between 0 and 100. When done, press "Enter" to activate the settings. To return to previous menu, press "Exit."
Press t or u key to adjust the value of Saturation between 0 and 100. When done, press "Enter" to activate the settings. To return to previous menu, press "Exit."

Recall sub menu

Press t or u key to confirm Color Recall, press Enter to recall color settings, or press Exit to return to previous menu.
Press t or u key to confirm Recall All, press Enter key to recall position and color settings, or press Exit key to return to previous menu.

Miscellaneous sub menu

Input Select: Select D-sub (analog), DVI (digital), S-Video, or Composite input.
Display Mode: Press t or u key to toggle between these three options: Full, 1:1, or Aspect. When done, press "Enter" to activate the settings. To return to previous menu, press "Exit."

Display Information.

9 Troubleshooting
Frequently Asked Questions (FAQ)
The image is blurred: Read the How to adjust the screen resolution section, and then select the correct resolution, refresh rate and make adjustments based on these instructions. How do you use a VGA extension cable?
Remove the extension cable for the test. Is the image now in focus? If not, optimize the image by working through the instructions in the How to adjust the screen refresh rate section It is normal for blurring to occur due to conduction losses in extension cables. You can minimize these losses by using an extension cable with better conduction quality or with a built-in booster.

Does the blurring only occur at resolutions lower than the native (maximum) resolution?
Read the How to adjust the screen resolution section. Select the native resolution.
Pixel errors can be seen: One of several pixels are permanently black, one or more pixels are permanently white, one or more pixels are permanently red, green, blue or another color.
Clean the LCD screen. Cycle power on-off. These are pixels that are permanently on or off and is a natural defect that occurs in LCD technology.
The image has a faulty coloration: It has a yellow, blue or pink appearance.
On the monitor, press Enter key and presst or u key to move to the Recall icon and press Enter key to enter Recall sub menu. Presst or u key to select Color Recall and select Yes in Color Recall sub menu, then press Enter key to recall to factory settings. If the image is still not correct and the OSD also has faulty coloration, this means one of the three primary colors is missing in the signal input. Now check the signal cable connectors. If any pin is bent or broken off, please contact your dealer to get necessary support.
No image can be seen: Is the prompt on the display illuminated in green?
If the LED is illuminated in green and there is a message Out of Range on the screen, this means you are using a display mode that this monitor does not support, please change the setting to one of the supported mode. Please read Supported operating modes section.
Is the prompt on the display illuminated in orange?
If the LED is illuminated in orange, the power management mode is active. Press any button on the computer keyboard or move the mouse. If that does not help, check the signal cable connectors. If any pin is bent or broken off, please contact your dealer to get necessary support.
Is the prompt on the display not illuminated at all?
Check the power supply mains socket, the external power supply and the mains switch.

Troubleshooting

The image is distorted, flashes or flickers: Read the How to adjust the screen resolution section and then select the correct resolution, refresh rate and make adjustments based on these instructions. The image is displaced in one direction: Read the How to adjust the screen resolution section and then select the correct resolution, refresh rate and make adjustments based on these instructions.

Need More Help?

If your problems remain after checking this manual, please contact your place of purchase or e-mail us at: Support@BenQ.com
10 Supported operating modes

Incoming display mode (Input timing) Resolution Horizontal Frequency (KHz) 31.47 31.47 31.47 35.00 37.86 37.50 37.88 48.08 46.87 49.72 48.36 56.48 60.02 60.24 67.50 68.68 61.80 71.81 60.0 64.00 75.83 80.00 81.75 Vertical Frequency (Hz) 70.08 70.08 60.00 67.00 72.80 75.00 60.32 72.19 75.00 74.55 60.00 70.10 75.00 74.93 75.00 75.06 66.00 76.60.00 71.53 75.00 76.60 Pixel Frequency (MHz) 25.17 28.32 25.18 30.24 31.50 31.50 40.00 50.00 49.50 57.29 65.00 75.00 78.75 80.00 108.00 100.00 94.50 108.108.00 128.00 135.00 135.162 Comment

Multi-scan operation

Actual display resolution
640x350 720x400 640x480 640x480 640x480 640x480 800x600 800x600 800x600 832x624 1024x768 1024x768 1024x768 1024x768 1152x864 1152x870 1152x900 1152x900 1280x960 1280x1024 1280x1024 1280x1024 1280x1024 1600x1200 1920x1200
DOS DOS DOS Macintosh VESA VESA VESA VESA VESA Macintosh VESA VESA VESA Macintosh VESA Macintosh SUN 66 SUN VESA VESA IBMI VESA SPARC2 VESA VESA

full screen 1920x1200

Modes not listed in the table may not be supported. For an optimal picture, we recommended you choose a mode listed in the table above. There are 25 available modes that are compatible with Windows. Image disruption may occur as a result of signal frequency differences from VGA cards which do not correspond with the usual standard. This is not, however, an error. You may improve this situation by altering an automatic setting or by manually changing the phase setting and the pixel frequency from the Geometry menu. If you switch off the monitor, interference lines can occur on your screen. But do not be concerned about this, as it is normal.
Supported operating modes 35
To extend the service life of the product, we recommend that you use your computer's power management function.
Supported operating modes

11 Specifications

Model Display type Viewable diagonal Native (maximum) resolution Colors Contrast / Brightness Response time Viewing angle (left/right, up/down) Line frequency Image frequency Image checks 23.0" , active, TFT 58.42 cm 1920x1200 16.7 million 500:1 / 250 cd/mms 88/88, 88/88 (CR=10) 30 - 81 kHz Multi- frequency monitor 50 - 76 Hz modes within these parameters Digital, Screen OSD Technology, iKey (automatic image setting) 6 buttons and iKey. Contrast, brightness, vert. & hor. image position, phase, pixel clock, color balance, color palette, choice of language (8 language OSD), OSD position, status indicator VESA DPMS, EPA 120 Watt Max 24 V 5A <5W RGB analog 0.7 Vpp/75 Ohm positive Digital: DVI-D Synchronisation Temperature (operating) Air humidity (operating) Certifications TTL separate signal connection 15-pin mini D-sub cable 5 C - 40 C 20% - 80% TCO 03, TV/Ergonomics, TV/ GS, FCC Class B, ISO 13406-2, VCCI, UL, CB Report, CE, C-Tick, BSMI, Fimko, GOST Automatic switched mode power supply, 90-264 V, 47-63Hz 465.5 x 534.8 x 248.5 mm 8.8 kg