LCD Display Monitors Technology Showcase
Dec 15, 2010 12:00 PM, By Bennett Liles
As many have learned over the past few years, there is a good bit more to building an effective digital signage network, control room monitoring system, or a knockout videowall than just connecting a few wires and bolts and making things flash. Making it produce results requires a thoughtful plan, the right content, and careful timing. Still, the foundation is solid hardware with the right control features, mounting options, and screen type to provide a reliable platform for the message. The LCD displays we survey here offer the right mix of video connections, screen brightness, and contrast parameters along with mounting and compatibility features needed for effective display and monitoring in the demanding, high-uptime commercial environment.
Whether installed for an all digital system from the start or for an incremental upgrade of an analog system, the Boland Communications DHD52W can serve as the bridge component with its mix of composite, Y/C and VGA analog, DVI, and HD/SD-SDI video connections. A wide viewing angle of 178/178 degrees, 45,000:1 contrast ratio, and 500 nits brightness with rotary knob brightness adjustment along with a dynamically dimmed 50,000-hour LED array make its performance customizable for the specific location and mounting method. The 52in. active display area can handle standard and high def from 480i to 1080p in a range of vertical rates, and control options include infrared and bidirectional RS-232. The unit has VESA 100 and 200 mount patterns and operates on 24VDC. As an option, 3.5mm stereo audio input and output connections are available.
Multiple monitor arrangements such as videowalls make use of several features on the D468FL commercial LCD panel from Hyundai IT Corp. including the ultrathin bezel and the daisy-chain capability on VGA, HDMI, and component connections. Configuration of each screen can be handled by using onscreen menus in 10 languages or through the RS-232C serial control connection. This model features a 46in. diagonal display area with WXGA resolution, 4500:1 contrast ratio, 8-millisecond response time, and 16.7 million display colors. Typical power consumption is 260W. Options include tempered glass, a transflective panel for automatic brightness control, and a motion detection feature for digital signage applications. Placement options are widened by automatic power management, an auto cooling system, and portrait and landscape scanning.
The Ikegami HLM-3250w has a wide range of uses including monitor walls, TV remote trucks, control rooms, digital signage, and other commercial applications for which its power consumption of 145W is a plus. The unit offers a 32in. diagonal display area with 1920x1080 resolution, 1300:1 contrast ratio, a 10-bit color display driver, built-in speakers and headphone connection, 8-channel audio level display, VITC display, splitscreen and dot-by-dot display modes, WFM, vectorscope, and built-in test patterns. Input connections allow multiformat SDI, composite, and single-link DVI-D for video, and an analog audio input on RCA. Options include an analog PC/component video input module, embedded analog audio and AES/EBU output modules, 3G-capable multi-SDI with choice of analog or AES/EBU audio out, and RS-232 serial remote control.
Introduced in March at the top of the GM-F series, the JVC GM-F520 52in. commercial LCD monitor is housed in the lightweight aluminum cabinet typical of the line with a 17mm bezel, and it includes an infrared motion sensor with a sensing range of up to 16.4ft. The sensor remains activated until the motion stops. The sensor can be used for power control, volume level, input selection, main and subpicture swap, and backlight control. The unit is suitable for use in bright areas with its 700 cd/m² brightness and 2000:1 contrast ratio. Multiple mounting points along with landscape and portrait scanning selection add to the installation options, and there is a space on the rear chassis to attach a set-top box. With native HD 1920x1080 resolution, the GM-F520 accepts video on BNC, 15-pin PC, and DVI-D. It outputs video on BNC and VGA connectors. Control connections include RS-485 and LAN.
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