HP Lp2480zx User Guide

							IconMain MenuSubmenuDescription
●Fill to Screen—image fills the entire screen and may look
distorted or elongated because of non-proportional scaling of
height and width
●Fill to Aspect Ratio—image is sized to fit the screen and
maintains proportional image
●One-to-one—disables video scaling, displays an image that
is smaller in size than the monitor’s capability and centers the
image on the screen in the active viewing area
●Overscan—enables over-scanning of the image for HDMI,
Component, S-video, and Composite inputs
●Crop Right Side—crops the video on the right side of the
image (enabled for the supported horizontal resolutions over
1920 pixels)
●Crop Left Side—crops the video on the left side of the image
(enabled for the supported horizontal resolutions over 1920
pixels)
●Crop Left and Right (Center)—crops the video on the left and
right sides in equal amounts and centers the image (enabled
for the supported horizontal resolutions over 1920 pixels)
ClockMinimizes any vertical bars or strips visible on the screen
background. Adjusting the Clock will also change the horizontal
screen image.
Clock PhaseAdjusts the focus of the display. This adjustment allows you to
remove any horizontal noise and clear or sharpen the image of
characters.
 Black LevelAdjusts the black level or offset of the monitor. The factory default
value is 128 (no offset) and the range is 0 to 255.
 OverDriveDisables or enables the overdrive feature. The factory default is
Enabled.
NOTE:OverDrive improves the response time of the panel for
watching motion video.
 HueAdjusts the Hue settings for the HDMI, Component, S-Video, and
Composite inputs.
 SaturationAdjusts the Saturation settings for the HDMI, Component, S-
Video, and Composite inputs.
PIP Control Sets up PIP functionality.
NOTE:DVI-I, HDMI, and DisplayPort are supported for the main
window. Component, S-Video, and Composite are supported for
the secondary window.
 PIP ModeEnables PIP mode (PIP or Side-by-Side).
 PIP PositionSets the position of the PIP window on the screen. The choices
are top right, top left, bottom right, or bottom left.
  Sub Picture Select Selects the input source for the PIP window. The choices are
Component, S-Video, or Composite video signal inputs.
Table 4-2  OSD Menu (continued)
Adjusting the Monitor Settings 25
 
						

							IconMain MenuSubmenuDescription
LanguageSelects the language in which the OSD menu is displayed. The
factory default is English.
ManagementSelects the power management features of the monitor.
Power SaverEnables the power saving feature. Select:
●On
●Off
The factory default is On.
Power On RecallRestores power to the monitor following an unexpected removal
of power. Select:
●On
●Off
The factory default is On.
DDC/CI SupportAllows the computer to control the OSD controls and calibrate the
monitor. Set to:
●On
●Off
The factory default is On.
 Firmware Update
SupportEnables or disables the monitor support of firmware updates. The
factory default is On.
NOTE:The Firmware Update Support is automatically disabled
when DDC/CI Support is disabled.
 Bezel Button LEDDisables or enables the bezel button backlight LEDs.
 Auto EDID UpdateDisables or enables the monitor’s automatic update of the DVI,
DisplayPort, and HDMI extended display identification data
(EDID) based on the selected Color Space preset. The EDID will
only be updated for the input selected for the primary window.
Sleep TimerProvides the timer adjustment menu options:
●Set Current Time—sets the current time in hours and minutes
●Set Sleep Time—sets the time you want to place the monitor
in sleep mode
●Set On Time—sets the time you want the monitor to wake up
from sleep mode
●Timer—sets the Sleep Timer feature On or Off. The default
setting is Off
●Sleep Now—immediately sets the monitor to enter sleep
mode
OSD Control Provides a menu for adjusting the on-screen display (OSD)
controls.
Table 4-2  OSD Menu (continued)
26 Chapter 4   Operating the Monitor
 
						

							IconMain MenuSubmenuDescription
Horizontal OSD PositionChanges the viewing position of the OSD menu to the left or right
area of the screen. The factory default range is 50.
Vertical OSD PositionChanges the viewing position of the OSD menu to the top or
bottom area of the screen. The factory default range is 50.
 Function ControlSelects the operation of the front panel Function button. The
options are Color Space, Brightness, Color Temp, Reset to Last,
Black Level, OverDrive, Custom Scale, Crop (L-C-R), and PIP
Control.
 Monitor Status MessageDisables or enables the Power-On Status Display and selects the
position the OSD message is displayed on the screen.
 Warning MessagesEnables or Disables OSD recommendation messages.
 Calibration LimitSets the limit (in backlight hours) for the calibration message. The
range is 0 to 5,000 hours. The factory default is 1000 hours. A
value of 0 disables the timer. The number of backlight hours since
the last calibration is also displayed.
 OSD Button LabelsDisables or enables the front panel button label display on the
screen.
 Mode DisplayDisables or enables the mode display information that is displayed
on the bottom of the main menu.
OSD TransparencyAdjust to view the background information through the OSD.
OSD TimeoutSets the time duration in seconds that the OSD is visible after the
last button is pressed. The range is 10 – 60 seconds. The factory
default is 40 seconds.
 OSD RotationRotates the OSD menus and messages to support the monitors
Pivot feature. The choices are 0 and 90 degrees.
Video Input
ControlProvides a menu of the input options. The default input selection
is DVI-I 1.
DVI-1 Analog/DigitalSelects DVI-I 1 as the primary video input. This input accepts
either analog or digital signals.
DVI-2 Analog/DigitalSelects DVI-I 2 as the primary video input. This input accepts
either analog or digital signals.
  HDMISelects HDMI as the primary video input.
  DisplayPortSelects DisplayPort as the primary video input.
  ComponentSelects Component as the primary video input.
  S-VideoSelects S-Video as the primary video input.
  CompositeSelects Composite as the primary video input.
Input Auto-SwitchingEnables or disables the monitor automatically switching to an
active input if the current signal is inactive. The factory default is
Enabled.
InformationSelects and displays important information about the monitor.
Current Settings Provides the current input video mode.
Table 4-2  OSD Menu (continued)
Adjusting the Monitor Settings 27
 
						

							IconMain MenuSubmenuDescription
Recommended SettingsProvides the recommended resolution mode and refresh rate for
the monitor.
Serial NumberReports the serial number of the monitor. The serial number is
needed if contacting HP technical support.
VersionReports the firmware version of the monitor.
  Last CalibrationDisplays the number of backlight hours since the last calibration.
Backlight hoursReports the total hours of backlight operation.
Factory ResetReturns all OSD menu settings and DDC/CI controls to the factory
default settings, except the Language.
CAUTION:A Factory Reset will result in the loss of all user
control and Color Space settings. Use this feature only if other
attempts to troubleshoot the monitor have been unsuccessful.
Exit Exits the OSD menu screen.
Optimizing Digital Conversion
Two controls in the on-screen display can be adjusted to improve image performance: Clock and Clock
Phase.
NOTE:The Clock and Clock Phase controls are adjustable only when using an analog input. These
controls are not adjustable for digital inputs.
The Clock must first be set correctly since the Clock Phase settings are dependent on the main Clock
setting. Use these controls only when the auto-adjustment function does not provide a satisfactory
image.
●Clock—Increases/decreases the value to minimize any vertical bars or stripes visible on the screen
background.
●Clock Phase—Increases/decreases the value to minimize video distortion or video jitter.
NOTE:When using the controls, you will obtain the best results by using the auto-adjustment pattern
software utility provided on the CD.
When adjusting the Clock and Clock Phase values, if the monitor images become distorted, continue
adjusting the values until the distortion disappears. To restore the factory settings, select Yes from the
Factory Reset menu in the on-screen display.
Using the HP Display Assistant Software
HP Display Assistant software, included on the software and documentation CD, is a software utility that
guides you through the tuning process with easy to understand instructions and background patterns
designed for each monitor control. It provides:
●The ability to set up and select from multiple color space presets.
●Software control of the monitor image and color settings to eliminate dependence on the monitor’s
front panel buttons and On-Screen Display (OSD) menu.
Table 4-2  OSD Menu (continued)
28 Chapter 4   Operating the Monitor
 
						

							●Defined preset display settings for each individual user in a multi-user environment.
●Asset Management and Power Management capabilities that include remote control for individual
or a group of displays on the domain from a centralized console application.
●Theft deterrence to help reduce unauthorized relocation of the monitor.
NOTE:Refer to the HP Display Assistant software user guide for additional information about the
software.
Identifying Monitor Conditions
Special messages will appear on the monitor screen when identifying the following monitor conditions:
●Input Signal Out of Range, Change Settings to 1920 x 1200 – 60Hz—Indicates the monitor does
not support the input signal because the resolution and/or refresh rate are set higher than the
monitor supports.
●No Input Signal—Indicates the monitor is not receiving a video signal from the PC on the monitor
video input connector. Check to determine if the PC or input signal source is off or in the power
saving mode.
●Auto Adjustment is in Progress—Indicates the auto-adjustment function is active.
●Monitor Going to Sleep—Indicates the screen display is entering a sleep mode.
●Check Video Cable—Indicates the video cable is not properly connected to the computer.
●OSD Lockout—The OSD can be enabled or disabled by pressing and holding the Menu button
on the front panel for 10 seconds. If the OSD is locked, the warning message OSD Lockout
displays for ten seconds.
◦If the OSD is locked, press and hold the Menu button for 10 seconds to unlock the OSD.
◦If the OSD is unlocked, press and hold the Menu button for 10 seconds to lock the OSD.
●Power Button Lockout—Indicates the power button is locked. If the power button is locked, the
warning message Power Button Lockout displays.
◦If the power button is locked, press and hold the power button for 10 seconds to unlock the
power button function.
◦If the power button is unlocked, press and hold the power button for 10 seconds to lock out
the power button function.
●Recommend Recalibration for Best Color Performance—Indicates the calibration limit has
been reached or a change has been made to one of the color controls (RGB primaries, Gamma,
Luminance, WhitePoint, or Black Level)
●Color Settings have Changed, Recommend you Update the Monitor Color Profile—Indicates
the need to change the color profile for the OS when the active color space preset or settings have
been changed.
●Recommend Minimum 30 Minute Warm-up for Best Color Performance—Indicates a minimum
30 minute warm-up period is recommended after the monitor is first powered on or comes out of
Sleep mode (when not displaying video for 30 minutes or more).
Identifying Monitor Conditions 29
 
						

							●Scanning Inputs. Please Wait—Indicates the monitor is in the process of scanning the DVI
(analog and digital), DisplayPort, and HDMI inputs.
●Color Gamut Remapping Enabled—Indicates the color gamut remapping has been enabled
because the monitor video input or video signal changed from YUV to an RGB signal.
●Color Gamut Remapping Disabled—Indicates the color gamut remapping has been disabled
because the monitor video input or video signal changed from RGB to a YUV signal.
Sleep Timer Mode
The Sleep Timer mode is an energy-saving feature that enables you to set a time for the monitor to
power on and off at the same time every day. This also extends the life of the backlight bulbs in the
monitor. The Sleep Timer has five settings:
●Set Current Time
●Set Sleep Time
●Set On Time
●Timer: On/Off
●Sleep Now
To set the timer:
1.Press the Menu button on the monitor front panel to display the OSD Menu.
2.Scroll down and highlight Management.
3.Press the Menu button to select Management.
4.Scroll down and highlight and select Sleep Timer > Set Current Time.
NOTE:You must set the current local time before you reset the time for Sleep Time or On
Time. Note that the time is displayed in a 24–hour clock format. For example, 1:15 p.m. is displayed
as 13 hours 15 minutes.
5.Press the Menu button once to enter the adjustment mode for hours.
6.Press the - (Minus) or + (Plus) button to adjust the hour.
7.Press the Menu button again to enter the time for minutes.
8.Press the - (Minus) or + (Plus) button to adjust the minutes.
9.Press the Menu button to lock in the time chosen.
10.After setting the current time, the highlight automatically skips to Set Sleep Time hours. Repeat
steps 6 through 9 to set Sleep Time.
11.If you do not want to set Sleep Time, press the Menu button twice, then select Save and
Return to exit the menu.
12.After setting Sleep Time, the highlight automatically skips to Set On Time hours. Repeat steps 6
through 9 to set On Time.
30 Chapter 4   Operating the Monitor
 
						

							13.Set the Timer mode to On to activate the Sleep Timer settings.
14.When you are finished, select Save and Return to exit the menu.
The fifth selection, Sleep Now, turns the monitor backlights off immediately and stays in sleep mode
until the next On Time activates or a monitor button is pressed.
Recommended Options
For Microsoft Windows and Macintosh users, HP recommends purchasing the HP/X-Rite color
calibration kit. The calibration kit is required to set up new color space presets and calibrate the monitor
to maintain the color performance. For more information on the color calibration kit, refer to
http://www.hp.com.
For best color performance, HP recommends the monitor be used in an environment with minimal
ambient light. If the monitor is used in a typical office environment with bright overhead lights, HP
recommends using a monitor hood to minimize ambient light. For more information on the monitor hood,
refer to 
http://www.hp.com.
Recommended Options 31
 
						

							A Advanced Color Management Features
and Usage
The HP LP2480zx monitor provides several advanced features that make it particularly well-suited to
color-critical applications, such as professional computer graphics development, video production, and
similar uses. These include:
●True 10-bit drivers in the LCD panel itself, and the ability to support true 10 bits/color (30 bits/pixel)
video through the DisplayPort 1.1 and HDMI 1.3 inputs.
●An LED backlight unit (instead of the usual cold-cathode fluorescent, or CCFL type) with
independent control of the red, green, and blue channels. This permits white point control using
the backlight, and a very wide range of white level (peak luminance) settings.
●The LED backlight, coupled with specially-selected color filters in the LCD, provides a very wide
gamut (133% of the 1953 NTSC gamut area, as expressed in the CIE 1976 u′v′ space) for this
monitor. As this gamut encloses a number of standard output device gamuts, such as Adobe RGB
and sRGB/Rec. 709, this enables accurate emulation of these standards by means of gamut-
adaptation capabilities built into the monitor.
NOTE:In the earlier 1931 CIE xy space, the gamut area of the LP2480zx is 110% that of the
1953 NTSC gamut.
●The monitor “front-end” electronics provides support for the gamut adaptation mentioned above,
including numerous factory-adjusted color space presets, which permit the user to quickly set up
the monitor to accurately emulate these standard output device specifications. The factory-
calibrated presets include Adobe RGB, sRGB, ITU-R Rec. BT-709, SMPTE-C, and the Digital
Cinema Initiative reference projector (informally known as DCI-P3, also SMPTE-431-2) output
device spaces, in addition to space for a user-adjustable preset.
●The user preset permits the setup of a custom color space emulation, with full control over the
desired RGB primaries, white point, white luminance, and gamma (display transfer function).
This Appendix will detail the operation and usage of these features provided on the LP2480zx monitor.
32 Appendix A   Advanced Color Management Features and Usage
 
						

							Color Gamut and Color Space Coverage
The LP2480zx monitor uses an LED-backlit LCD module that provides an extremely wide color gamut.
This gamut was chosen to enclose a number of color spaces as defined by various standard output
device specifications, which (along with other color-management features in this product’s electronics)
permits the monitor to accurately emulate display devices conforming to these standards. The nominal
native primary set, white point, and gamma of the LP2480zx, and those of the various supported
standards, are provided in the table below:
Table A-1  Supported Color Gamut and Color Space
  FullAdobe RGBSMPTE-CITU-Rec. BT.
709sRGBDCI-P3
(SMPTE-431
-2)
†
White point:       
Color temp
(CCT) 6500K6500K6500K6500K6500K~6300K
 x0.3130.3130.3130.3130.3130.314
 y0.3290.3290.3290.3290.3290.351
 u0.1980.1980.1980.1980.1980.191
 v0.4680.4680.4680.4680.4680.480
Redx0.6900.6400.6300.6400.6400.680
 y0.3000.3300.3400.3300.3300.320
 u0.5290.4510.4330.4510.4510.496
 v0.5170.5230.5260.5230.5230.526
Greenx0.2050.2100.3100.3000.3000.265
 y0.7150.7100.5950.6000.6000.690
 u0.0730.0760.1300.1250.1250.099
 v0.5760.5760.5630.5630.5630.578
Bluex0.1500.1500.1550.1500.1500.150
 y0.0450.0600.0700.0600.0600.060
 u0.1850.1750.1760.1750.1750.175
 v0.1250.1580.1780.1580.1580.158
Gamma 2.22.22.2~2.2*~2.2*2.6
* The display response specified by the sRGB and ITU-R Rec. BT.709 standards cannot be accurately described by a simple
gamma value; see 
Transfer Function (Gamma) on page 39 in this appendix for details.
† The Digital Cinema/SMPTE-431-2 reference projector gamut is not fully enclosed by the LP2480zx’s native gamut; when set
to the DCI preset, the monitor will provide as accurate an emulation of this space as possible within its available gamut. The
difference is primarily along the red-green edge of the DCI gamut, as the DCI red and green primaries are slightly outside the
LP2480zx gamut. See the diagram below.
Color Gamut and Color Space Coverage 33
 
						

							As plotted within the 1976 CIE u’v’ color space, these gamuts are shown below:
Figure A-1  Color Space Diagram
Color Space Emulation
As noted earlier, the LP2480zx has the capability of emulating a display that conforms to a number of
standard output device specifications, such as sRGB, Adobe RGB, and et cetera. This emulation
includes matching the specified primaries, transfer function (gamma), white point, and, where
appropriate, white level (luminance) of the target specification. Preset color spaces are provided as
described earlier, and in addition, the user may program custom spaces as desired. Full custom color
space programming involves the selection of primaries, white point, gamma value, and et cetera, which
may be accomplished using the optional HP/X-Rite calibration tool. However, the display luminance
(brightness) and white point may be adjusted using the on-screen display (OSD) or HP Display Assistant
software.
The following sections describe the theory behind this emulation, the hardware provided to support it in
the LP2480zx, and information on its usage.
Theory of Operation
In general, most display devices such as CRT- or LCD-based monitors, may be mathematically modeled
as comprising two functions: first, a mapping of the input values (which we will assume for this discussion
are in the form of “RGB” codes, that is, the relative values of red, green, and blue levels for each pixel
in the image) to the intensity of light output by the device for each (this is the display’s transfer function,
sometimes referred to as the gamma, for each of the three channels). This now “gamma adjusted” data
must also be mapped to the specific primary colors and intensities provided by the display device for
34 Appendix A   Advanced Color Management Features and Usage