In preparing to calibrate a display or video wall, observe the following guidelines:

●Decide how bright you want the screen to be. During calibration, you will choose a target luminance. This value incorporates both the brightness of the backlight and of the LCD at full white. As with the brightness control of a conventional monitor, the most pleasing setting depends on the environmental lighting.

The maximum luminance depends on the color temperature, because temperature is adjusted by decreasing light of certain colors. If you choose 9300K as your target color temperature for calibration, you will be offered a luminance range from 200-500 cd/m2. If you set color temperature to 8000K, the offered range will be 200-450 cd/m2, and for color temperature 6500K it will be 200-400 cd/m2.

Total light output diminishes as a display ages. After one year of continuous use all day every day, the total light output an LD4730 or LD4730G is expected to have dropped by approximately 10%. With these considerations in mind, you will be able to choose a target luminance from the range offered.

●Warm up the display for at least one hour. This is required because the colorimetry of the image is not stable until the display has reached uniform operating temperature. Even when the effect of warm-up is not apparent, it can impact the calibration results.

●Ensure that there is no bright light shining directly onto the screen. Light reflecting off the display onto the measuring sensor of the colorimeter will result in an incorrect calibration. If necessary, cover the display surface and colorimeter with a light-blocking cloth.

●Clean the screen. Refer to Cleaning the LD4730 on page 5 for specific instructions.

●Set Energy Saving, Picture mode, Contrast, Brightness, Sharpness, Backlight, and Ambient Light Sensor to their default values. Decide on the desired settings for Dynamic Contrast, Color Temperature and Local Dimming. Set these to the same value on every display in the video wall.

●When calibrating a video wall, use the same colorimeter for all displays in the wall. Otherwise, variation between colorimeters can jeopardize uniformity of the results.

To calibrate the display, follow these steps:

1.Plug the colorimeter into the USB port. Figure 4-9Plugging in the colorimeter

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2.Navigate to the Color Calibration menu of the OSD. Use the Color Calibration option to Enter the calibration process.

48 Chapter 4 Operating the display

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HP LD4730 47-inch Micro-Bezel Video Wall Display manual + +
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LD4730 47-inch Micro-Bezel Video Wall Display specifications

The HP LD4730 is a state-of-the-art 47-inch Micro-Bezel Video Wall Display designed to enhance visual experiences in various settings, including retail, control rooms, and corporate environments. With its ultra-narrow bezels, the LD4730 offers an immersive viewing experience by minimizing the gaps between screens, allowing for seamless video wall configurations.

One of the standout features of the HP LD4730 is its impressive Full HD resolution of 1920 x 1080 pixels, which ensures crystal-clear image quality. The display leverages advanced LED backlighting technology, delivering vibrant colors and deep blacks, making it suitable for a wide range of applications, from showcasing promotional content to displaying critical data in real-time.

The LD4730 is engineered for 24/7 operation, providing reliability and durability for continuous use in demanding environments. This makes it ideal for digital signage applications where uptime is crucial. Its robust design is complemented by a sophisticated thermal management system that ensures optimal performance while preventing overheating, thereby prolonging the lifespan of the display.

In terms of connectivity, the HP LD4730 offers multiple input options, including HDMI, DisplayPort, and DVI, allowing for easy integration with various devices and content sources. This versatility is essential for creating dynamic presentations and showcasing diverse content formats. Additionally, it supports daisy chaining, enabling users to connect multiple displays easily for larger video walls without the need for additional hardware.

The display also incorporates advanced calibration capabilities that ensure consistent brightness and color across all units in a video wall setup. This feature maintains a uniform appearance, crucial for professional environments where visual consistency is key.

For added convenience, the HP LD4730 includes a user-friendly interface, allowing for straightforward setup and configuration. The display can be easily mounted in portrait or landscape orientation, providing flexibility in design and installation.

In conclusion, the HP LD4730 47-inch Micro-Bezel Video Wall Display is a powerful solution for businesses looking to create impactful visual displays. Its high-resolution capabilities, durable design, and extensive connectivity options make it suitable for a broad array of applications, ensuring high-quality performance and reliability in any environment.
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