Dell Computer Monitor ST2220TC User Manual

Dell™ ST2220T monitor User's Guide  
Notes, Notices, and Cautions  
NOTE: A NOTE indicates important information that helps you make better use of your computer.  
NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.  
CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death.  
Information in this document is subject to change without notice.  
© 2010 Dell Inc. All rights reserved.  
Reproduction of these materials in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.  
Trademarks used in this text: DELL and the DELL logo are trademarks of Dell Inc; Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corporation in  
the United States and/or other countries; ENERGY STAR is a registered trademark of the U.S. Environmental Protection Agency. As an ENERGY STAR partner, Dell Inc. has  
determined that this product meets the ENERGY STAR guidelines for energy efficiency.  
Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc. disclaims any  
proprietary interest in trademarks and trade names other than its own.  
Model ST2220Tc  
September 2010 Rev. A00  
 
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USB up stream cable (enables USB ports and touch  
function on the monitor)  
Documentation (Safety Information, Quick Start Guide,  
and CD)  
Cleaning cloth  
Product Features  
The ST2220T monitor has an active matrix, thin-film transistor (TFT), liquid crystal display (LCD). The monitor features include:  
21.5 inches (546.8 mm) diagonal.  
1920 X 1080 resolution, plus full-screen support for lower resolutions.  
Touch sensitivedetects your finger or any other pointing device close to the screen.  
Tilt adjustment capability.  
Plug and play capability if supported by your system.  
On-Screen Display (OSD) adjustments for ease of set-up and screen optimization.  
Software and documentation media which include an information file (INF), Image Color Matching File (ICM), and product documentation.  
Energy Saver feature for Energy Star compliance.  
Security lock slot.  
2 x 2 watt built-in speakers.  
Identifying Parts and Controls  
Front View  
Front View  
Label  
Description  
     
1
2
3
Preset Modes select  
Brightness/Contrast select  
OSD menu select  
4
5
EXIT  
Power button (with light indicator)  
Back View  
Back view  
Back View with monitor stand  
Label  
Description  
Use  
1
2
Barcode serial number label  
Regulatory rating label  
To contact Dell for technical support.  
Lists the regulatory approvals.  
3
Cable holder  
To organize cables by placing them through the holder.  
4
5
USB downstream port  
Security lock slot  
To connect the USB cable.  
To help secure your monitor.  
Side View  
Left view  
Right view  
Bottom View  
Bottom view  
Label  
Description  
1
2
3
4
5
6
Power cord connector  
DVI connector  
HDMI connector  
VGA connector  
Audio Line-in  
USB upstream connector  
Monitor Specifications  
The following sections give you information about the various power management modes and pin assignments for various connectors of your monitor.  
Power Management Modes  
If you have VESA's compliance display card or software installed in your PC, the monitor can automatically reduce its power consumption when not in use. This  
is referred to as Power Save Mode. If the computer detects input from keyboard, mouse, or other input devices, the monitor automatically resumes functioning.  
The following table shows the power consumption and signaling of this automatic power saving feature:  
VESA Modes  
Horizontal Sync  
Vertical Sync  
Video  
Power Indicator  
Power Consumption  
Normal operation and  
USB active  
Normal operation  
Active  
Active  
Active  
White  
55 W (maximum)  
Active  
Inactive  
-
Active  
Inactive  
-
Active  
Blanked  
-
White  
Amber  
Off  
28 W (typical)  
1 W  
Active-off mode  
Switch off  
0.5 W  
NOTE: The OSD functions in the 'Normal operation' mode. One of the following messages appears when the menu key is touched in Active-off mode.  
or  
Activate the computer and 'wake up' the monitor to gain access to the OSD.  
   
NOTE: This monitor is ENERGY STAR®-compliant.  
Zero power consumption in OFF mode can only be achieved by disconnecting the main cable from the power adapter.  
Pin Assignments  
VGA Connector  
Pin Number  
15-pin Side of the Connected Signal Cable  
1
Video-Red  
Video-Green  
Video-Blue  
GND  
2
3
4
5
Self-test  
GND-R  
6
7
GND-G  
8
GND-B  
9
Computer 5V  
GND-sync  
GND  
10  
11  
12  
13  
14  
15  
DDC data  
H-sync  
V-sync  
DDC clock  
DVI Connector  
Pin Number  
24-pin Side of the Connected Signal Cable  
1
2
3
4
5
TMDS RX2-  
TMDS RX2+  
TMDS Ground  
Floating  
Floating  
6
DDC Clock  
DDC Data  
Floating  
7
8
9
TMDS RX1-  
TMDS RX1+  
TMDS Ground  
Floating  
10  
11  
12  
13  
Floating  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
+5V power  
Self test  
Hot Plug Detect  
TMDS RX0-  
TMDS RX0+  
TMDS Ground  
Floating  
Floating  
TMDS Ground  
TMDS Clock+  
TMDS Clock-  
HDMI Connector  
Pin Number  
19-pin Side of the Connected Signal Cable  
1
T.M.D.S. Data 2-  
T.M.D.S. Data 2 Shield  
T.M.D.S. Data 2+  
T.M.D.S. Data 1+  
T.M.D.S. Data 1 Shield  
T.M.D.S. Data 1-  
T.M.D.S. Data 0+  
T.M.D.S. Data 0 Shield  
T.M.D.S. Data 0-  
T.M.D.S. Clock +  
T.M.D.S. Clock Shield  
T.M.D.S. Clock -  
CEC  
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
Reserved (N.C. on device)  
SCL  
SDA  
DDC/CEC Ground  
+5V Power  
Hot Plug Detect  
Universal Serial Bus (USB) Interface  
This section gives you information about the USB ports that are available on the left side of your monitor.  
NOTE: This monitor supports High-Speed Certified USB 2.0 interface  
Transfer speed  
High speed  
Full speed  
Data Rate  
480 Mbps  
12 Mbps  
Power Consumption  
2.5W (Max., each port)  
2.5W (Max., each port)  
2.5W (Max., each port)  
Low speed  
1.5 Mbps  
USB Upstream Connector  
 
Pin Number  
4-pin Side of the connector  
1
2
3
4
DMU  
VCC  
DPU  
GND  
USB Downstream Connector  
Pin Number  
4-Pin Side of the Signal Cable  
1
2
3
4
VCC  
DMD  
DPD  
GND  
USB Ports  
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1 upstream at bottom  
3 downstream at side  
NOTE: USB 2.0 functionality requires a USB 2.0-capable computer  
NOTE: The monitor's USB interface works only when the monitor is on or in power save mode. If you turn off the monitor and then turn it on, the attached pe  
to resume normal functionality.  
Plug and Play Capability  
You can install the monitor in any Plug and Play-compatible system. The monitor automatically provides the computer system with its Extended Display  
Identification Data (EDID) using Display Data Channel (DDC) protocols so the system can configure itself and optimize the monitor settings. Most monitor  
installations are automatic; you can select different settings if desired. For more information about changing the monitor settings, see Operating the monitor.  
Monitor Specifications  
Screen type  
Panel Type  
Active matrix - TFT LCD  
IPS  
21.5 inches (21.5-inch measured diagonally viewable image  
size)  
Screen dimensions  
Preset display area:  
Horizontal:  
475.2 mm (18.71 inches)  
Vertical:  
267.3 mm (10.52 inches)  
0.2475 mm  
Pixel pitch  
Viewing angle  
Luminance output  
Contrast ratio  
178° (vertical) typical, 178° (horizontal) typical  
250 CD/m² (typical)  
1000:1 (typical)  
Dynamic contrast  
ratio  
50,000:1 (typical)  
Faceplate coating  
Backlight  
Glare with Anti-Smudge coating (4H)  
CCFL  
Response Time  
8 ms with Overdrive (g-to-g)  
 
Color Depth  
Color Gamut  
16.7 mil colors  
82%*  
* ST2220T color gamut (typical) is based on CIE1976 (82%) and CIE1931 (72%) test standards.  
Touch Screen Specifications  
Touch Technology  
Touch Method  
Optical touch  
Finger, stylus or any pointer  
Stylus Diameter  
Minimum 7 mm  
Mouse functionalityclick, drag, double-click and right-click  
Capabilities  
Touch functionalitysupport Win7 multi-touch gestures  
Resolution  
Accuracy  
1920 X 1080  
+/-2.5 mm over 95% of touchable area (Microsoft Windows 7  
compliant )  
Touch Activation Force  
Touch Durability  
No pressure required  
Unlimited  
Touch Response Time  
Typical response time 15 ms  
Touch screen OS compatibility  
Function  
XP  
Vista  
Win7  
Starter  
Win7  
Home  
Basic  
Win7  
Home  
Premium  
Win7  
Ultimate  
Win7 Pro  
Win7  
Other  
Enterprise Operating  
Systems  
Single-touch  
-
-
Yes  
-
Yes  
-
Yes  
-
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
-
-
Multi-touch(two points)  
NOTE:  
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Support native Win7 multi-touch. (plug & play)  
Support single-touch (mouse behavior) in Vista. (Need to install touch screen driver. Please find the touch screen driver for Vista in the CD)  
Supports Windows Vista and Windows 7 operating systems only.  
Touch screen is out of alignment when the desktop is not full screen.  
Win7 OS will automatically install touch screen driver each time when the USB cable is plugged into a USB port.  
If you want to enable the touch screen functionality on the secondary monitor:  
1. Set the primary monitor as an extended display.  
2. Go to Start -> Control Panel -> Tablet PC Settings. Click Setup and follow the instructions on the screen.  
Resolution Specifications  
Horizontal scan range  
Vertical scan range  
30 kHz to 83 kHz (automatic)  
56 Hz to 76 Hz (automatic)  
1920 x 1080 at 60 Hz  
Optimal preset resolution  
Highest preset resolution  
1920 x 1080 at 60 Hz  
Video Supported Modes  
Video display capabilities (DVI  
playback)  
480i/480p/576i/576p/720p/1080i/1080p  
(Supports HDCP)  
Preset Display Modes  
Display Mode  
Horizontal  
Frequency  
(kHz)  
Vertical  
Frequency (Hz)  
Pixel Clock  
(MHz)  
Sync Polarity  
(Horizontal/Vertical)  
640 x 350  
31.47  
31.47  
31.47  
31.50  
31.47  
37.88  
46.880  
48.36  
60.02  
67.50  
63.98  
79.98  
66.587  
55.62  
70.09  
70.09  
59.94  
75.00  
70.08  
60.32  
75.00  
60.00  
75.03  
75.00  
60.02  
75.02  
59.934  
49.92  
25.18  
25.18  
25.17  
31.5  
+/-  
-/+  
-/-  
640 x 400  
640 x 480  
640 x 480  
-/-  
720 x 400  
28.32  
40.00  
49.50  
65.00  
78.75  
108.00  
108.00  
135.00  
138.50  
141.50  
-/+  
+/+  
+/+  
-/-  
800 x 600  
800 x 600  
1024 x 768  
1024 x 768  
1152 x 864  
1280 x 1024  
1280 x 1024  
1920 x 1080-R  
1920 x 1080  
+/+  
+/+  
+/+  
+/+  
+/-  
-/+  
Electrical Specifications  
Analog RGB, 0.7 Volts +/- 5%, positive polarity at  
75 ohm input impedance  
Digital DVI-D TMDS, HDMI, 600mV for each  
differential line, positive polarity at 50 ohm input  
impedance  
Video input signals  
Audio Input and Output signals  
Synchronization input signals  
Input signal level: 2Vrms without chipping  
Separate horizontal and vertical synchronizations,  
polarity-free TTL level, SOG (Composite SYNC on  
green)  
100 to 240 VAC/50 or 60 Hz + 3 Hz/1.6A (Max.)  
AC/DC Adaptor input voltage/frequency/current  
Inrush current  
For use only with power supply DELL,  
DA65NS4-00.  
120 V: 30 A (Max.)  
240 V: 60 A (Max.)  
Physical Characteristics  
Connector type  
15-pin D-sub miniature, blue connector; DVI-D, white connector; HDMI, Black connector  
Digital: Detachable, DVI-D, Solid pins, shipped detached from the monitor  
Analog: Detachable, D-Sub, 15pins, shipped attached to the monitor  
HDMI: Detachable, HDMI-A, Solid pins, shipped without cable  
Signal cable type  
Dimensions  
Height  
14.96 inches (380.1 mm)  
20.79 inches (528.1 mm)  
2.3 inches (58.5 mm)  
Width  
Depth  
Weight  
Weight with packaging  
Weight with cables  
8.03 kg (17.7 lbs)  
6.30 kg (13.9 lbs)  
Environmental Characteristics  
Temperature  
Operating  
0° to 40° C (32° to 104° F)  
Storage: -20° to 60° C (-4° to 140° F)  
Shipping: -20° to 60° C (-4° to 140° F)  
Non-operating  
Humidity  
Operating  
10% to 80% (non-condensing)  
Storage: 5% to 90% (non-condensing)  
Shipping: 5% to 90% (non-condensing)  
Non-operating  
Altitude  
Operating  
Non-operating  
3,657.60 m (12,000 ft) max  
12,192 m (40,000 ft) max  
222.3 BTU/hour (maximum)  
188.1 BTU/hour (typical)  
Thermal dissipation  
Maintenance Guidelines  
Cleaning Your Monitor  
CAUTION: Before cleaning the monitor, unplug the monitor power cable from the electrical outlet.  
For best practices, follow the instructions in the list below while unpacking, cleaning, or handling your monitor:  
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To clean your touch screen, use the supplied soft, clean cloth. Do not use benzene, thinner, ammonia, abrasive cleaners, or compressed air. Avoid  
wiping the top corners of the monitor where the optics are located.  
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Use a lightly-dampened, warm cloth to clean the monitor. Avoid using detergent of any kind as some detergents leave a milky film on the monitor.  
Handle your monitor with care; any scratch on the monitor will show scuff marks.  
To help maintain the best image quality on your monitor, use a dynamically changing screen saver and turn off your monitor when not in use.  
   
Appendix  
Dell™ ST2220T monitor User's Guide  
CAUTION: Safety Instructions  
CAUTION: Use of controls, adjustments, or procedures other than those specified in this documentation may result in exposure to shock,  
electrical hazards, and/or mechanical hazards.  
For information on safety instructions, see the safety information that shipped with your monitor.  
FCC Notices (U.S. Only) and Other Regulatory Information  
For FCC notices and other regulatory information, see the regulatory compliance website located at www.dell.com\regulatory_compliance.  
Contact Dell  
For customers in the United States, call 800-WWW-DELL (800-999-3355).  
NOTE: If you do not have an active Internet connection, you can find contact information on your purchase invoice, packing slip, bill, or  
Dell product catalog.  
Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some services may not be  
available in your area. To contact Dell for sales, technical support, or customer service issues:  
1. Visit support.dell.com.  
2. Verify your country or region in the Choose A Country/Region drop-down menu at the bottom of the page.  
3. Click Contact Us on the left side of the page.  
4. Select the appropriate service or support link based on your need.  
5. Choose the method of contacting Dell that is convenient for you.  
       
Setting Up Your Monitor  
Dell™ ST2220T monitor  
If you have a Dell™ desktop or a Dell™ portable computer with internet access  
1. Go to http://support.dell.com, enter your service tag, and download the latest driver for your graphics card.  
2. After installing the drivers for your graphics Adapter, attempt to set the resolution to 1920 X 1080 again.  
NOTE: If you are unable to set the resolution to 1920 x 1080, please contact Dell™ to inquire about a graphics Adapter that supports these resolutions.  
 
Setting Up Your Monitor  
Dell™ ST2220T monitor  
If you have a non Dell™ desktop, portable computer, or graphics card  
1. Right-click on the desktop and click Properties.  
2. Select the Settings tab.  
3. Select Advanced.  
4. Identify your graphics controller supplier from the description at the top of the window (e.g. NVIDIA, ATI, Intel etc.).  
5. Refer to the graphic card provider website for updated driver (for example, http://www.ATI.com OR http://www.NVIDIA.com ).  
6. After installing the drivers for your graphics adapter, attempt to set the resolution to 1920 X 1080 again.  
NOTE: If you are unable to set the resolution to 1920 x 1080, please contact the manufacturer of your computer or consider purchasing a graphics  
adapter that will support the video resolution of 1920 x 1080.  
 
Operating the Monitor  
Dell™ ST2220T monitor User's Guide  
Turn On the Monitor  
Press the  
button to turn on the monitor  
Using the Front Panel OSD Controls  
Use the buttons on the side of the monitor to adjust the image settings.  
Side panel button  
A
Description  
Use the Preset modes button to choose from a list of preset color modes. See Using the OSD Menu.  
Preset modes  
Brightness / Contrast  
Menu  
B
Use the Brightness / Contrast button to direct access to the "Brightness" and "Contrast" control menu.  
C
Use the Menu button to open the on-screen display OSD).  
D
     
Use the Exit button to exit on-screen display (OSD) from menu and sub-menus.  
Exit  
Front panel controls  
Use the buttons on the side of the monitor to adjust the image settings.  
Side panel button  
A
Description  
Use the Up button to adjust (increase ranges) items in the OSD menu.  
Up  
B
Use the Down button to adjust (decrease ranges) items in the OSD menu.  
Down  
C
Use the OK button to confirm your selection.  
OK  
D
Use the back button to go back to the main menu.  
Back  
Using the On-Screen Display (OSD) Menu  
Accessing the Menu System  
NOTE: If you change the settings and then either proceed to another menu or exit the OSD menu, the monitor automatically saves the changes. The  
changes are also saved if you change the settings and then wait for the OSD menu to disappear.  
1. Press any key to launch the OSD menu and press  
to display the main menu.  
Main Menu  
   
2. Press the  
and  
buttons to toggle between options in the Menu. As you move from one icon to another, the option name is highlighted.  
again.  
3. To select the highlighted item on the menu press the  
4. Press the  
and  
buttons to enter the slide bar and then use the  
to return to previous menu without accepting current settings or  
buttons to select the desired parameter.  
5. Press the  
or  
button, according to the indicators on the menu, to make your changes.  
to accept and return to previous menu.  
6. Select the  
The table below provides a list of all the OSD menu options and their functions.  
Icon  
Menu and Submenus  
Description  
BRIGHTNESS/CONTRAST Use the Brightness and Contrast menu to adjust the Brightness/Contrast.  
Back  
Press the  
Allows you to adjust the brightness or luminance of the backlight.  
Press the button to increase brightness and press the button to decrease brightness (min 0 ~ max 100).  
button to go back to the main menu.  
Brightness  
Contrast  
Allows you to adjust the contrast or the degree of difference between darkness and lightness on the monitor screen. A  
brightness first, and adjust contrast only if you need further adjustment.  
Press the  
button to increase contrast and press the  
button to decrease contrast (min 0 ~ max 100).  
AUTO ADJUST  
Use this button to activate automatic setup and adjust menu. The following dialog appears on a black screen as the mo  
adjusts to the current input:  
Auto Adjustment allows the monitor to self-adjust to the incoming video signal. After using Auto Adjustment, you can fu  
your monitor by using the Pixel Clock (Coarse) and Phase (Fine) controls under Image Settings.  
NOTE: Auto Adjust does not occur if you press the button while there are no active video input signals or attached cables.  
INPUT SOURCE  
Use the Input Source menu to select different video signals that may be connected to your monitor.  
Press the  
button to go back to the main menu  
Select VGA input when you are using the analog (VGA) connector. Press the  
Select DVI-D input when you are using the digital (DVI) connector. Press the  
Select HDMI input when you are using the digital (HDMI) connector. Press the  
button to select the VGA input source.  
button to select the DVI input source.  
button to select the HDMI input sourc  
Select Auto select to let the monitor search for available input signals.  
COLOR SETTINGS  
Use the Color Setting menu to adjust the monitor's color settings.  
Color setting mode  
submenu  
Back  
Press the  
button to go back to the main menu.  
Input Color Format  
Allows you to set the video input mode to:  
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RGB: Select this option if your monitor is connected to a computer or DVD player using the HDMI cable or the HDM  
adapter.  
YPbPr: Select this option if your DVD player supports only YPbPr output.  
Mode Selection  
Allows you to set the display mode to:  
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Graphics: Select this mode if your monitor is connected to your computer.  
Video: Select this mode if your monitor is connected to a DVD player.  
NOTE: Depending upon the Display Mode, select the Preset Modes available for your monitor change.  
Preset Mode  
Allows you to choose from a list of preset color modes.  
In the Graphics mode, you can set the color to the following preset values:  
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Standard: Loads the monitor's default color settings. This is the default preset mode.  
 
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Multimedia: Loads color settings ideal for multimedia applications.  
Game: Loads color settings ideal for most gaming applications.  
Warm: Increase the color temperature. The screen appears warmer with a red/yellow tint.  
Cool: Decreases the color temperature. The screen appears cooler with a blue tint.  
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Custom (RGB): Allows you to manually adjust the color settings. Press the  
and  
buttons to adjust the R  
and Blue values and create your own preset color mode.  
In the Video mode, you can set the color to the following preset values:  
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Movie: Loads color settings ideal for movies. This is the default preset mode.  
Game: Loads color settings ideal for most gaming applications.  
Sports: Loads color settings ideal for sports.  
Nature: Loads color settings ideal for nature.  
Hue  
Allows you to adjust the skin tone of the image. Use  
or  
button to adjust the hue from '0' to '100'.  
NOTE: Hue adjustment is available only in the Video mode.  
Allows you to adjust the color saturation of the image. Use  
NOTE: Saturation adjustment is available only in the Video mode.  
Saturation  
Demo Mode  
or  
button to adjust the saturation from '0' to '100'.  
Vertically splits the screen into two segments. The left half of the screen in the normal mode and the right half of the sc  
displayed in the color enhanced mode.  
NOTE: Demo Mode is only available for video input.  
Reset Color Settings  
DISPLAY SETTINGS  
Resets your monitor's color settings to the factory defaults.  
Display setting mode  
submenu  
Back  
Press the  
Use the  
button to go back to the main menu.  
Wide Mode  
and  
button to adjust image wide.  
Horizontal Position  
Use the  
and  
buttons to adjust image left and right (min 0 ~ max 100).  
NOTE: When using DVI or HDMI source, the Horizontal Position setting is not available.  
Vertical Position  
Use the  
and  
buttons to adjust image up and down (min 0 ~ max 100).  
NOTE: When using DVI or HDMI source, the Vertical Position setting is not available.  
Allows you to increase or decrease the sharpness of the image.  
Sharpness  
Pixel Clock  
Use  
and  
buttons to adjust the sharpness from '0' to '100'.  
The Phase and Pixel Clock adjustments allow you to adjust your monitor to your preference. These settings are access  
main OSD menu, by selecting 'Display Settings'.  
Use the  
and  
buttons to adjust for best image quality.  
Phase  
If satisfactory results are not obtained using the phase adjustment, use the Pixel Clock (coarse) adjustment and then  
(fine).  
NOTE: Pixel Clock and Phase Adjustments are only available for "VGA" input.  
Dynamic Contrast  
The dynamic contrast helps get a higher contrast if you choose Game preset, Movie preset, Sports preset, and Nature p  
Use the  
Use the  
button to enable the Dynamic Contrast adjustment.  
button to disable the Dynamic Contrast adjustment.  
NOTE: Brightness control is disabled in Dynamic Contrast mode.  
Response Time  
Response time is the time required for an LCD pixel to change from fully active (black) to fully inactive (white), then back  
again.  
You can set the response time to:  
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Normal  
Overdrive (default).  
Reset Display Settings  
AUDIO SETTINGS  
Resets the monitor's display settings to the factory defaults.  
Use the Audio Settings menu to adjust the audio settings.  
Audio Setting mode  
submenu  
Speaker Volume  
Line Out Source  
Power Save Audio  
Adjust the volume of the speaker.  
Select the source of the audio input.  
Allows you to turn on or off the power to the audio during the audio power save mode.  
Default is "On".  
On Allows you to turn off the line-out to the sound bar when the monitor is in standby mode.  
Off Allows you to turn on the line-out to the sound bar when the monitor is in standby mode.  
Resets your monitor audio settings to the factory defaults.  
Reset Audio Setting  
Exit Menu  
Press the  
button to exit the OSD main menu and Press the  
button to accept changes.  
OTHER SETTINGS  
Back  
Press the  
button to go back to the main menu.  
Language  
Allows you to set the OSD display to one of six languages: English, Espanol, Francais, Deutsch, Simplified Chinese, or J  
Allows you to adjust the OSD background from opaque to transparent.  
Menu Transparency  
Menu Timer  
Allows you to set the time for which the OSD remains active after you press a button on the monitor.  
Use the  
and  
buttons to adjust the slider in 1 second increments, from 5 to 60 seconds.  
Menu Lock  
Controls user access to adjustments. When Lock is selected, no user adjustments are allowed. All buttons are locked e  
button.  
NOTE: When the OSD is locked, pressing the  
button takes you directly to the OSD settings menu, with 'OSD Lock'  
on entry. Choose Unlock and allow user access to all applicable settings.  
DDC/CI  
DDC/CI (Display Data Channel/Command Interface) allows a software on your computer to adjust the monitor display s  
the brightness, color balance etc.  
Enable (Default): Optimizes the performance of your monitor and provides a better customer experience.  
Disable: Disables the DDC/CI option and the following message appears on the screen.  
Select Yes to disable DDC/CI or No to return.  
LCD Conditioning  
LCD conditioning helps eliminate any image retention and may take several hours.  
NOTE: Severe cases of image retention are known as burn-in. LCD Conditioning does not remove burn-in.  
Disable: This is the default option.  
Enable: Enables LCD conditioning and the following message appears on the screen. Select Yes to proceed and No to  
NOTE: Press any button on the monitor to terminate LCD Conditioning at any time.  
Factory Reset  
PERSONALIZE  
Resets all OSD settings to the factory preset values.  
Allows you to adjust shortcut button for: 1. Brightness & Contrast 2. Preset Modes.  
OSD Warning Messages  
The following warning messages may appear on the screen to indicate that the monitor is out of synchronization.  
This means that the monitor cannot synchronize with the signal that it is receiving from the computer. Either the signal is too high or too low  
for the monitor to use. See Specifications for the Horizontal and Vertical frequency ranges addressable by this monitor. Recommended mode  
is 1920 X 1080 at 60Hz.  
When the monitor enters Power Save mode, one of the following messages appears :  
If you press any button other than the power button, one of the following messages will appear depending on the selected input:  
s for more information.  
Setting the Maximum Resolution  
To set the maximum resolution for the monitor:  
1. Right-click on the desktop and select Properties.  
2. Select the Settings tab.  
3. Set the screen resolution to 1920 x 1080.  
4. Click OK.  
If you do not see 1920 x 1080 as an option, you may need to update your graphics driver. Depending on your computer, complete one of the following  
procedures:  
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If you have a Dell desktop or portable computer:  
Go to support.dell.com, enter your service tag, and download the latest driver for your graphics card.  
If you are using a non-Dell computer (portable or desktop):  
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Go to the support site for your computer and download the latest graphic drivers.  
Go to your graphics card website and download the latest graphic drivers.  
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Configure the monitor to the desired position to use  
   
NOTE: The stand is attached when the monitor is shipped from the factory.  
Using the Touch Screen  
NOTE: Ensure that the USB cable is connected between the monitor and the computer.  
The Dell™ ST2220T monitor is touch sensitive—you can control the computer simply by touching the screen.  
The touch screen allows you to interact with the computer in a similar way to a mouse as follows:  
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Tap the screen once for a single mouse click.  
Tap the screen twice in quick succession for a double mouse click.  
Touch down and then move your finger to drag an object.  
Touch and hold for a right mouse click.  
To select a menu option, touch down on the menu, then move your finger to the required option, then lift your finger to select the option. Alternatively,  
tap the menu, then tap the option required as you do with a mouse.  
The touch screen does not require pressure to sense a touch. For best results, point at roughly right angles to the screen and keep the rest of your hand clear  
of the glass.  
 
Setting Up Your Monitor  
Dell™ ST2220T monitor  
Setting the display resolution to 1920 x 1080 (Maximum)  
For optimal display performance while using the Microsoft® Windows® operating systems, set the display resolution to 1920 x 1080 pixels by performing the  
following steps:  
1. Right-click on the desktop and click Properties.  
2. Select the Settings tab.  
3. Move the slider-bar to the right by pressing and holding left-mouse button and adjust the screen resolution to 1920 X 1080.  
4. Click OK.  
If you do not see 1920 x 1080 as an option, you may need to update your graphics driver. Please choose the scenario below that best describes the  
computer system you are using, and follow the provided directions:  
 
Dell™ ST2220T monitor  
Information in this document is subject to change without notice.  
© 2010 Dell Inc. All rights reserved  
Reproduction of these materials in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.  
Trademarks used in this text: DELL and the DELL logo are trademarks of Dell Inc; Microsoft, Windows, and Windows Vista are either registered trademarks or trademarks of  
Microsoft Corporation in the United States and/or other countries; ENERGY STAR is a registered trademark of the U.S. Environmental Protection Agency. As an ENERGY STAR partner,  
Dell Inc. has determined that this product meets the ENERGY STAR guidelines for energy efficiency.  
Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc. disclaims any  
proprietary interest in trademarks and trade names other than its own.  
Model ST2220Tc  
September 2010 Rev. A00  
 
Setting Up the Monitor  
Dell™ ST2220T monitor User's Guide  
Connecting Your Monitor  
CAUTION: Before you begin any of the procedures in this section, follow the Safety Instructions.  
NOTE: USB uplink cable needs to be connected for touch function.  
To connect your monitor to the computer:  
1. Turn off your computer and disconnect the power cable.  
2. Connect the HDMI cable, white (digital DVI-D), or blue (analog VGA) display connector cable to the corresponding video port on the back of your  
computer. Do not use all the cables on the same computer. Use all of the cables only when they are connected to different computers with appropriate  
video systems.  
Connecting the Blue VGA Cable  
Connecting the White DVI Cable  
Connecting the HDMI Cable  
   
NOTE: The graphics are used for the purpose of illustration only. Appearance of the computer may vary.  
Connecting the USB Cable  
After you have completed connecting the DVI/VGA/HDMI cable, follow the procedure below to connect the USB cable to the computer and complete your  
monitor setup:  
1. Connect the downstream USB connector (cable supplied) to an appropriate USB connector on your computer.  
2. Connect USB peripherals to the upstream USB connectors on the monitor.  
3. Plug the power cables for your computer and monitor into a nearby outlet.  
4. Turn on the monitor and the computer.  
If your monitor displays an image, installation is complete. If it does not display an image, see Solving Problems.  
5. Use the cable holder on the back of monitor stand to organize the cables.  
Connecting the Audio Cable  
Connecting the audio cable:  
1. Connect the audio cable from the audio-in port on monitor to the audio-out port on your computer.  
2. Turn on the monitor and computer.  
3. Use the cable holder on the back of monitor to organize the cables.  
Organizing Your Cables  
After attaching all necessary cables to your monitor and computer, (see Connecting Your Monitor) use the cable holder to organize all cables as shown above.  
 
Troubleshooting  
Dell™ ST2220T monitor  
CAUTION: Before you begin any of the procedures in this section, follow the Safety Instructions.  
Self-Test  
Your monitor provides a self-test feature that allows you to check whether your monitor is functioning properly. If your monitor and computer are properly  
connected but the monitor screen remains dark, run the monitor self-test by performing the following steps:  
1. Turn off both your computer and the monitor.  
2. Unplug the video cable from the back of the computer or monitor. To ensure proper self-test operation, remove the HDMI, Digital (white connector), and  
the Analog (blue connector) cables from the back of the computer or monitor.  
3. Turn on the monitor.  
The floating dialog box should appear on the screen (against a black background) if the monitor cannot sense a video signal and is working correctly.  
While in self-test mode, the power LED remains white. Also, depending upon the selected input, one of the dialogs shown below will continuously  
scroll through the screen.  
or  
or  
4. This box also appears during normal system operation, if the video cable becomes disconnected or damaged.  
5. Turn off your monitor and reconnect the video cable; then turn on both your computer and the monitor.  
If your monitor screen remains blank after you use the previous procedure, check your video controller and computer, because your monitor is functioning  
properly.  
Built-in Diagnostics  
Your monitor has a built-in diagnostic tool that helps you determine if the screen abnormality you are experiencing is an inherent problem with your monitor, or  
with your computer system and graphic card.  
NOTE: You can run the built-in diagnostics only when the video cable is unplugged and the monitor is in self-test mode.  
To run the built-in diagnostics:  
1. Ensure that the screen is clean (no dust particles on the surface of the screen).  
2. Unplug the video cable(s) from the back of the computer or monitor. The monitor then goes into the self-test mode.  
3. On the front panel, press and hold the shortcut key 1 and shortcut key 4 keys on the front panel, simultaneously for 2 seconds. A gray screen  
appears.  
   
4. Ensure that the screen is looking normal.  
5. Press the shortcut key 4 key on the front panel again. The color of the screen changes to red.  
6. Repeat steps 5 to inspect the display in green, blue, black, and white colored screens.  
The test is complete when the white screen appears. To exit, press the shortcut key 4 key again.  
If you do not detect any screen abnormalities upon using the built-in diagnostic tool, the monitor is functioning properly. Check the video card and computer.  
Common Problems  
The following table contains general information about common monitor problems you might encounter and the possible solutions.  
Common Symptoms  
What You See  
Possible Solutions  
No Video/Power LED No picture  
off  
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Ensure that the video cable connecting the monitor and the computer is properly connected and secure.  
Verify that the power outlet is functioning properly using any other electrical equipment.  
No Video/Power LED No picture or no  
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Increase brightness & contrast controls via OSD.  
Perform monitor self-test feature check.  
Check for bent or broken pins in the video cable connector.  
Press Shortcut key 4 to call out the Input Select Source OSD menu. Select the correct input source.  
Run the built-in diagnostics.  
on  
brightness  
Poor Focus  
Picture is fuzzy,  
blurry, or ghosting  
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Perform Auto Adjust via OSD.  
Adjust the Phase and Pixel Clock controls via OSD.  
Eliminate video extension cables.  
Reset the monitor to Factory Settings.  
Change the video resolution to the correct aspect ratio (16:9).  
Shaky/Jittery Video  
Wavy picture or fine  
movement  
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Perform Auto Adjust via OSD.  
Adjust the Phase and Pixel Clock controls via OSD.  
Reset the monitor to Factory Settings.  
Check environmental factors.  
Relocate the monitor and test in another room.  
Missing Pixels  
LCD screen has  
spots  
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Turn off the monitor and then turn it back on.  
Pixel that is permanently off is a natural defect that can occur in LCD technology.  
Run the built-in diagnostics  
Stuck-on Pixels  
LCD screen has  
bright spots  
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Turn off the monitor and then turn it back on.  
Pixel that is permanently off is a natural defect that can occur in LCD technology.  
Run the built-in diagnostics  
Brightness Problems Picture is too dim or  
too bright  
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Reset the monitor to Factory Settings.  
Auto Adjust via OSD.  
Adjust brightness & contrast controls via OSD.  
Geometric Distortion Screen is not  
centered correctly  
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Reset the monitor to Factory Settings.  
Auto Adjust via OSD.  
Adjust brightness & contrast controls via OSD.  
NOTE: When using 'DVI-D' or 'HDMI', the positioning adjustments are not available.  
Horizontal/Vertical  
Lines  
Screen has one or  
more lines  
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Reset the monitor to Factory Settings.  
Perform Auto Adjust via OSD.  
Adjust Phase and Pixel Clock controls via OSD.  
Perform monitor self-test feature check and determine if these lines are also in self-test mode.  
Check for bent or broken pins in the video cable connector.  
Run the built-in diagnostics  
NOTE: When using 'DVI-D' or 'HDMI', the Pixel Clock and Phase adjustments are not available.  
Synchronization  
Problems  
Screen is scrambled  
or appears torn  
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Reset the monitor to Factory Settings.  
Perform Auto Adjust via OSD.  
Adjust Phase and Pixel Clock controls via OSD.  
Perform monitor self-test feature check to determine if the scrambled screen appears in self-test mode.  
Check for bent or broken pins in the video cable connector.  
Restart the computer in the safe mode.  
Safety Related  
Issues  
Visible signs of  
smoke or sparks  
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Do not perform any troubleshooting steps.  
Contact Dell immediately.  
 
Intermittent  
Problems  
Monitor malfunctions  
on & off  
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Ensure that the video cable connecting the monitor to the computer is connected properly and is secure.  
Reset the monitor to Factory Settings.  
Perform monitor self-test feature check to determine if the intermittent problem occurs in self-test mode.  
Missing Color  
Wrong Color  
Picture lacks color  
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Perform monitor self-test feature check.  
Ensure that the video cable connecting the monitor to the computer is connected properly and is secure.  
Check for bent or broken pins in the video cable connector.  
Run the built-in diagnostics  
Picture color not  
good  
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Change the Color Setting Mode in the Color Settings OSD to Graphics or Video depending on the  
application.  
Try a different Color Preset Setting in Color Settings OSD. Adjust R/G/B value in Color Settings OSD if the  
Color Management is turned off.  
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Change the Input Color Format to PC RGB or YPbPr in the Advance Setting OSD.  
Run the built-in diagnostics  
Image retention from Faint shadow from  
a static image left on the static image  
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Use the Power Management feature to turn off the monitor at all times when not in use (for more  
information, see Power Management Modes).  
Alternatively, use a dynamically changing screensaver.  
the monitor for a  
displayed appears on  
the screen  
long period of time  
Product-Specific Problems  
Specific Symptoms  
Screen image is too small  
What You See  
Image is centered on screen,  
but does not fill entire viewing  
area  
Possible Solutions  
Reset the monitor to Factory Settings.  
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Cannot adjust the monitor withOSD does not appear on the  
Turn off the monitor, unplug the power cord, plug back, and then turn on the monitor.  
the keys on the front panel  
screen  
No Input Signal when user  
controls are pressed  
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Check the signal source. Ensure that the Computer is not in the power saving mode by  
moving the mouse or pressing any key on the keyboard.  
Check whether the signal cable is plugged in properly. Re-plug the signal cable if  
necessary.  
No picture, the LED light is  
white. When you press "up",  
"down" or "Menu" key, the  
message appears  
Reset the computer or video player.  
The picture does not fill the  
entire screen.  
The picture cannot fill the  
height or width of the screen  
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Due to different video formats (aspect ratio) of DVDs, the monitor may display in full  
screen.  
Run the built-in diagnostics  
NOTE: When choosing DVI-D or HDMI mode, the Auto Adjust function is not available.  
Universal Serial Bus (USB) Specific Problems  
Specific Symptoms  
USB interface is not working  
What You See  
USB peripherals are not  
working  
Possible Solutions  
Check that your monitor is turned ON.  
Reconnect the upstream cable to your computer.  
Reconnect the USB peripherals (downstream connector).  
Switch off and then turn on the monitor again.  
Reboot the computer.  
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Some USB devices like external portable HDD require higher electric current; connect the  
device directly to the computer system.  
High Speed USB 2.0 interface isHigh Speed USB 2.0  
slow. peripherals working slowly or  
not working at all  
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Check that your computer is USB 2.0-capable.  
Some computers have both USB 2.0 and USB 1.1 ports. Ensure that the correct USB port  
is used.  
Reconnect the upstream cable to your computer.  
Reconnect the USB peripherals (downstream connector).  
Reboot the computer.  
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Touch Screen problems  
Common Symptoms  
Possible Solutions  
Touch screen does not respond  
to touches  
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Make sure the USB cable is connected from the monitor to the computer.  
Make sure the touch screen is connected to a USB port that provides enough power for it (some peripherals, such as key  
USB ports that do not provide sufficient power for some devices). Try connecting the touch screen to a different USB port  
Make sure Control panel -> System & security -> System -> Device Manager->.  
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HID touch device is recognized as shown below.  
       
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Before changing any settings, try restarting the computer.& Dell™ ST2220T.  
The cursor does not accurately  
follow your finger when you  
touch the screen  
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Try restarting the computer & Dell™ ST2220T.  
If the above remedies do not work, the touch screen needs calibrating. To fix the problem, see Calibrating the Touch Scr  
The cursor moves erratically  
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Make sure there is nothing blocking the optics of the touch screen. There are three sensors in the top corners and a left  
the screen that need unobstructed views across the surface of the display to the bottom and side edges.  
Clean the panel surface and edges of the screen. See Maintenance for instructions.  
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If the above remedies do not work, Try restarting the computer.& Dell™ ST2220T.  
Calibrating the Touch Screen  
ST2220T uses standard Windows7 calibration:  
1. Run Windows Control Panel -> Hardware & Sound -> Tablet PC -> Calibrate.  
2. Touch your finger (or stylus) on the screen at that center of black cross until the cross moves.  
3. The pointer moves to fifteen further positions in sequence for the first calibration and three further positions in sequence if previous calibration data is  
stored.  
4. Store the calibrated data to complete the touch screen calibration procedure.  
This completes the touch screen calibration procedure.  
NOTE: When removing your finger, lift it straight off the screen, making sure you dont drag it across the screen. Dell ST2220T monitor.  
NOTE: Test the calibration by moving the mouse pointer around the screen checking that it closely follows your finger.  
NOTE: If the calibration is not satisfactory, you can re-calibrate.  
NOTE: Make sure your finger is placed accurately at each calibration point.  
NOTE: If your finger pointed with poor accuracy, press & hold the point to go back to the previous state.  
   

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