Welch spot vital signs Lxi VGA interface board 707408 1425 2014 for hospital ICU Clinic medical

►Brief Description

The Welch Allyn Spot Vital Signs Lxi monitor's VGA interface board, 707408-1425, receives digital video signals from the device's main processing board and converts them into analog VGA signals for output to an external display. VGA remains the most common and versatile video connection standard for projectors, large monitor screens, and many desktop monitors. Despite the increasing popularity of digital interfaces like DVI and HDMI, VGA's compatibility ensures its continued viability in medical environments. This board enables the Spot Vital Signs Lxi device to: Display vital sign waveforms and values ​​in real time on a larger screen, enabling medical staff to clearly view them from a distance. It also serves as a bridge for integrating video signals into larger hospital information systems.

►Specification

►Product Details Picture

►Technical Design and Operating Principle

Main Controller/Converter Chip: The core of the board is likely a dedicated digital video converter chip. This chip is responsible for decoding low-voltage differential signaling (LVDS) or other digital video formats from the motherboard and re-encoding it into analog RGB (red, green, and blue) signals.

Digital-to-Analog Converter (DAC): VGA signals are analog, so a high-quality DAC is required to convert digital pixel information into precise analog voltages, which directly determines the color accuracy and clarity of the output image.

Signal Amplifier and Conditioning Circuit: The converted analog signal is weak and requires amplification and conditioning by an operational amplifier to ensure that the signal remains stable and does not produce blur or jitter after being transmitted for several meters through the VGA cable.

After-Sales Service

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