Dell U2312HM User manual

Dell™ U2312HM Flat Panel Monitor
User Guide
Setting the display resolution to 1920 x 1080 (maximum)
Information in this document is subject to change without notice.
© 2011Dell 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 trademarks or registered
trademarks of Microsoft Corporation in the United States and/or other countries, Intel is a registered trademark of Intel Corporation in the U.S.
and other countries; and ATI is a trademark of Advanced Micro Devices, Inc. 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 U2312HMt
June 2011 Rev. A00

Dell™ U2312HM Flat Panel Monitor User's Guide
About Your Monitor
Setting Up the Monitor
Operating the Monitor
Troubleshooting
Appendix
Notes, Notices, and Cautions
NOTE: A NOTE indicates important information that helps you make better use of your computer.
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid
the problem.
WARNING: A WARNING indicates a potential for property damage, personal injury,or death.
Information in this document is subject to change without notice.
© 2011Dell 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 trademarks or
registered trademarks of Microsoft Corporation in the United States and/or other countries, Intel is a registered trademark of Intel
Corporation in the U.S. and other countries; and ATI is a trademark of Advanced Micro Devices, Inc. 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 U2312HMt
June 2011 Rev. A00

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Setting Up Your Monitor
Dell™ U2312HM Flat Panel Monitor
Setting the display resolution to 1920 x 1080 (maximum)
For maximum display performance with Microsoft®Windows®operating systems, set the display resolution to 1920 x
1080 pixels by performing the following steps:
In Windows XP:
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 the left-mouse button and adjust the screen resolution to
1920 x 1080.
4. Click OK.
In Windows Vista®or Windows®7:
1. Right-click on the desktop and click Personalization.
2. Click Change Display Settings.
3. Move the slider-bar to the right by pressing and holding the 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:
1: If you have a Dell™ desktop or a Dell™ portable computer with internet access.
2: If you have a non Dell™ desktop, portable computer, or graphics card.
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About Your Monitor
Dell™ U2312HM Flat Panel Monitor User's Guide
Package Contents
Product Features
Identifying Parts and Controls
Monitor Specifications
Plug and Play Capability
Universal Serial Bus (USB) Interface
LCD Monitor Quality and Pixel Policy
Maintenance Guidelines
Package Contents
Your monitor ships with the components shown below. Ensure that you have received all the components and contact Dell if something is missing.
NOTE: Some items may be optional and may not ship with your Monitor. Some features or media may not be available in certain countries.
NOTE: To set up with anyother stand, please refer to the respective stand setup guide for setup instructions.
Monitor
Stand

Power Cable
VGA Cable
DVI Cable
USB up stream cable (enables the USB ports on the monitor)
Drivers and Documentation media
Quick Setup Guide
Product and Safety Information Guide

Product Features
The U2312HM flat panel display has an active matrix, Thin-Film Transistor (TFT), Liquid Crystal Display (LCD). The monitor features include:
■23-inch (58.42 cm) viewable area display (Measured diagonally). 1920 x 1080 resolution, plus full-screen support for lower resolutions.
■Wide viewing angle to allow viewing from a sitting or standing position, or while moving from side-to-side.
■Tilt, swivel, vertical extension and rotate adjustment capability. (with Enhanced Menu Rotation).
■Removable pedestal and Video Electronics Standards Association (VESA™) 100 mm mounting holes for flexible mounting solutions.
■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 includes an information file (INF), Image color Matching File (ICM), PowerNap software application and product documentation.
■Energy Saver feature for Energy Star compliance.
■Security lock slot.
■Asset Management Capability.
■Capability to switch from wide aspect to standard aspect ratio while maintaining the image quality.
■EPEAT Gold Rating.
■Halogen Reduced.
■Arsenic-Free glass and Mercury Free for Panel only.
■Energy Gauge shows the energy level being consumed by the monitor in real time.
■High Dynamic Contrast Ratio (DCR).
■PowerNap and Dynamic Dimming Software included (comes in the CD attached with the monitor).
■TCO Certified Displays.
Identifying Parts and Controls

Front View
Front View Front panel controls
Label Description
1Preset Modes (default, but configurable)
2Brightness & Contrast (default, but configurable)
3Menu
4Exit
5Power (with power light indicator)
Back View

Back view Back view with monitor stand
Label Description Use
1VESA mounting holes (100 mm x 100 mm
- behind attached VESA Plate)Wall mount monitor using VESA-compatible wall mount kit (100 mm x 100 mm) .
2Regulatory label Lists the regulatory approvals.
3Stand release button Release stand from monitor.
4Security lock slot Secures monitor with security cable lock.
5Dell Soundbar mounting brackets Attaches the optional Dell Soundbar.
6Barcode serial number label Refer to this label if you need to contact Dell for technical support.
7USB downstream ports Connect your USB devices.
8Cable management slot Use to organize cables by placing them through the slot.
Side View

Left view Right view
Bottom View
Bottom view Bottom view with monitor stand
Label Description Use
1AC power cord connector Connect the power cable
2DC power connector for Dell Soundbar. Connect the power cord for the soundbar (optional)

3DisplayPort connector Connect your computer DP cable
4DVI connector Connect your computer DVI cable
5VGA connector Connect your computer VGA cable
6USB upstream port Connect the USB cable that came with your monitor to the monitor
and the computer. Once this cable is connected,you can use the USB
connectors on the side and bottom of the monitor
7USB downstream ports Connect your USB devices. You can only use this connector after you
have connected the USB cable to the computer and USB upstream
connector on the monitor.
8Stand lock feature To lock the stand to the monitor using M3x6 mm machine screw
(screw not provided)
Monitor Specifications
Flat Panel Specifications
Screen type Active matrix - TFT LCD
Panel type IPS
Screen dimensions 23 inches (23-inches viewable image size)
Preset display area: 509.2 (H) X 286.4 (V) mm
Horizontal 509.2 mm (20.05 inches)
Vertical 286.4 mm (11.28 inches)
Pixel pitch 0.265 mm
Viewing angle 178° (vertical) typical
178° (horizontal) typical
Luminance output 300 cd/m²(typical)
Contrast ratio 1000 to 1 (typical), 2M : 1 (typical Dynamic Contrast On)
Faceplate coating Antiglare with hard-coating 3H
Backlight LED edgelight system
Response Time 8 ms gray-to-gray (typical)
Color depth 16.7 million colors
Color Gamut 82%*
*[U2312HM] color gamut (typical) is based on CIE1976 (82%) and CIE1931 (72%) test standards.

Resolution Specifications
Horizontal scan range 30 kHz to 83 kHz (automatic)
Vertical scan range 56 Hz to 76 Hz (automatic)
Maximum preset resolution 1920 x 1080 at 60 Hz
Supported Video Modes
Video display capabilities (DVI & DP playback) 480p, 576p, 720p, 1080p, 480i, 576i, 1080i
Preset Display Modes
Display Mode Horizontal Frequency (kHz) Vertical Frequency (Hz) Pixel Clock (MHz) Sync Polarity (Horizontal/Vertical)
VESA, 720 x 400 31.5 70.0 28.3 -/+
VESA, 640 x 480 31.5 60.0 25.2 -/-
VESA, 640 x 480 37.5 75.0 31.5 -/-
VESA, 800 x 600 37.9 60.0 40.0 +/+
VESA, 800 x 600 46.9 75.0 49.5 +/+
VESA, 1024 x 768 48.4 60.0 65.0 -/-
VESA, 1024 x 768 60.0 75.0 78.8 +/+
VESA, 1152 x 864 67.5 75.0 108.0 +/+
VESA, 1280 x 1024 64.0 60.0 108.0 +/+
VESA, 1280 x 1024 80.0 75.0 135.0 +/+
VESA, 1920 x 1080 67.5 60.0 148.5 +/+
Electrical Specifications
Video input signals
Analog RGB, 0.7 Volts +/- 5%, positive polarity at 75 ohm input impedance
Digital DVI-D TMDS, 600mV for each differential line, positive polarity at 50 ohm
input impedance
DP 1.1a signal input support
Synchronization input signals TTL levels required and separate syncs (including Trigger points), SOG (Composite
SYNC on green)

AC input
voltage/frequency/current 100 to 240 VAC / 50 or 60 Hz +3 Hz / 1.5 A (Typical)
Inrush current 120 V : 30 A (Max)
240 V : 60 A (Max)
Physical Characteristics
Connector type 15-pin D-subminiature, blue connector; DVI-D, white connector;
DP, black connector.
Signal cable type Digital: Detachable, DVI-D, Solid pins, shipped detached from the
monitor
Analog: attachable, D-Sub, 15pins, shipped detached from the
monitor
Dimensions (with stand)
Height (extended) 493.9 mm (19.44 inches)
Height (compressed) 365.0 mm (14.37 inches)
Width 546.4 mm (21.51 inches)
Depth 185.4 mm (7.30 inches)
Dimensions (without stand)
Height 323.3 mm (12.73 inches)
Width 546.4 mm (21.51 inches)
Depth 59.5 mm (2.34 inches)
Stand dimensions
Height (extended) 401.2 mm (15.80 inches)
Height (compressed) 358.1 mm (14.10 inches)
Width 279.8 mm (11.02 inches)
Depth 180.3 mm (7.10 inches)
Weight
Weight with packaging 6.47 kg (14.26 lbs)
Weight with stand assembly and
cables 5.18 kg (11.42 lbs)
Weight without stand assembly 2.96 kg (6.53 lbs)

(For wall mount or VESA mount
considerations - no cables)
Weight of stand assembly 1.72 kg (3.79 lbs)
Front Frame Gloss 5.0 gloss unit (max.) (Black Frame)
20.0 gloss unit (max.) (Silver Frame)
Environmental Characteristics
Temperature
Operating 0 °C to 40 °C
Non-operating Storage: -20 °C to 60 °C (-4 °F to 140 °F)
Shipping: -20 °C to 60 °C (-4 °F to 140 °F)
Humidity
Operating 10% to 80% (non-condensing)
Non-operating Storage: 5% to 90% (non-condensing)
Shipping: 5% to 90% (non-condensing)
Altitude
Operating 3,048 m (10,000 ft) max
Non-operating 10,668 m (35,000 ft) max
Thermal dissipation 238.85 BTU/hour (maximum)
102.36 BTU/hour (typical)
Power Management Modes
If you have VESA's DPM™ 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 Active Active Active Blue 70W (maximum) **
30W (typical)
Active-off mode Inactive Inactive Blanked Amber Less than 0.5 W
Switch off - - - Off Less than 0.5 W
The OSD will only function in the normal operation mode. When any button is pressed in Active-off mode, one of the following messages will be displayed:

Activate the computer and 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 monitor.
** Maximum power consumption with max luminance, Dell Soundbar, and USB active.
Pin Assignments
VGA Connector
Pin
Number 15-pin Side of the Connected Signal Cable
1Video-Red
2 Video-Green
3 Video-Blue
4 GND

5 Self-test
6 GND-R
7 GND-G
8 GND-B
9Computer 5V/3.3V
10 GND-sync
11 GND
12 DDC data
13 H-sync
14 V-sync
15 DDC clock
DVI Connector
Pin
Number 24-pin Side of the Connected Signal Cable
1TMDS RX2-
2TMDS RX2+
3TMDS Ground
4 Floating
5 Floating
6DDC Clock
7DDC Data
8 Floating

9TMDS RX1-
10 TMDS RX1+
11 TMDS Ground
12 Floating
13 Floating
14 +5V/+3.3V power
15 Self test
16 Hot Plug Detect
17 TMDS RX0-
18 TMDS RX0+
19 TMDS Ground
20 Floating
21 Floating
22 TMDS Ground
23 TMDS Clock+
24 TMDS Clock-
DisplayPort Connector
Pin
Number 20-pin Side of the Connected Signal Cable
1 ML0(p)
2 GND
3 ML0(n)
4 ML1(p)
5 GND
6 ML1(n)

7 ML2(p)
8 GND
9 ML2(n)
10 ML3(p)
11 GND
12 ML3(n)
13 GND
14 GND
15 AUX(p)
16 GND
17 AUX(n)
18 HPD
19 DP_PWR Return
20 +3.3V DP_PWR
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.
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 Data
Rate Power Consumption
High speed 480 Mbps 2.5W (Max., each port)
Full speed 12 Mbps 2.5W (Max., each port)
Low speed 1.5 Mbps 2.5W (Max., each port)
USB Upstream Connector

Pin Number 4-pin Side of the Connector
1DMU
2 VCC
3DPU
4GND
USB Downstream Connector
Pin Number 4-Pin Side of the Signal Cable
1VCC
2DMD
3DPD
4GND
USB Ports
1 upstream - back
4 downstream - 2 on back; 2 on left 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 peripherals may take
a few seconds to resume normal functionality.

LCD Monitor Quality and Pixel Policy
During the LCD Monitor manufacturing process, it is not uncommon for one or more pixels to become fixed in an unchanging state which are hard to see and do not affect the
display quality or usability. For more information on Dell Monitor Quality and Pixel Policy, see Dell Support site at: support.dell.com.
Maintenance Guidelines
Cleaning Your Monitor
WARNING: Read and follow the safety instructions before cleaning the monitor.
WARNING: 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:
To clean your antistatic screen, lightly dampen a soft, clean cloth with water. If possible, use a special screen-cleaning tissue or solution suitable for the antistatic coating. Do
not use benzene, thinner, ammonia, abrasive cleaners, or compressed air.
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.
If you notice white powder when you unpack your monitor, wipe it off with a cloth.
Handle your monitor with care as a darker-colored monitor may scratch and show white scuff marks more than a lighter-colored monitor.
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.
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Setting Up the Monitor
Dell™ U2312HM Flat Panel Monitor User's Guide
Attaching the Stand
Connecting the Monitor
Organizing Your Cables
Attaching the Soundbar (optional)
Removing the Stand
Wall Mounting (Optional)
Attaching the Stand
NOTE: The stand is detached when the monitor is shipped from the factory.
NOTE: This is applicable for a monitor with a stand. When any other stand is bought, please refer to the respective stand setup guide for set up
instructions.
To attach the monitor stand:
1. Remove the cover and place the monitor on it.
2. Fit the two tabs on the upper part of the stand to the groove on the back of the monitor.
3. Press the stand till it snaps into its place.
Connecting Your Monitor
WARNING: Before you begin any of the procedures in this section, follow the Safety Instructions.
To connect your monitor to the computer:
1. Turn off your computer and disconnect the power cable.
Connect the blue (VGA) cable from your monitor to your computer.
NOTE: If your computer supports a white DVI connector, unscrew and detach the blue (VGA) cable from the monitor and then connect
the White DVI cable to the monitor and the white DVI connector on your computer.
NOTE: Do not connect the blue VGA, the white DVI, or the black DisplayPort cables to the computer at the same time.
2. Connect the white (digital DVI-D) or the blue (analog VGA) or the black (DisplayPort) display connector cable to the corresponding video port on the back of your
computer. Do not use the three cables on the same computer. Use all the cables only when they are connected to three different computers with appropriate video
systems.
Connecting the white DVI cable