PureLink DVI-DOC
Digital Signal Isolator
-Timothy J.
Description
The PureLink DVI-DOC Digital Signal Isolator is a specialized device designed to provide secure signal isolation between video sources and display devices in sensitive installation environments. This innovative solution offers both signal isolation capability and DVI signal extension functionality, making it valuable for high-security facilities, broadcast operations, and professional AV installations requiring controlled signal transmission.
The DVI-DOC's primary function is enabling complete isolation of video signal transmission with a simple action. By disconnecting the power supply adapter from the unit, users can instantly isolate signal transmission between source and display, providing a physical disconnect that prevents any video data from reaching its destination. This signal on/off control capability is essential for high-security environments where visual information must be controllable at a moment's notice.
Beyond isolation functionality, the DVI-DOC serves as a DVI signal repeater with pixel re-clocking technology. The unit compensates for signal degradation over long cable runs up to 50 meters (165 feet), regenerating clean digital video output regardless of input cable length. This makes it useful for extending DVI signals in installations where displays are located far from source equipment.
The device also provides 5V power output to connected fiber optic extension cables, enabling integration with PureLink's fiber-based transmission systems for even longer distance applications. Compatible with DDWG DVI standards and supporting both DVI and 3.5mm stereo audio signals, the DVI-DOC accommodates resolutions from VGA (640x480) through HDTV (1920x1080) and WUXGA (1920x1200). Plug-and-play operation requires no configuration or driver installation, ensuring straightforward deployment in diverse installation scenarios.
Frequently Asked Questions
Q. How does the signal isolation feature work?
A. The DVI-DOC provides signal isolation by disconnecting power to the active electronics. When the power adapter is unplugged, no video signal can pass through the device, creating a complete physical break in signal transmission. This provides verifiable signal isolation for security-sensitive applications.
Q. What is the maximum cable length the DVI-DOC can compensate for?
A. The DVI-DOC provides signal compensation for DVI cables up to 50 meters (165 feet). The pixel re-clocking technology regenerates clean digital video output regardless of input cable length within this range, eliminating artifacts caused by signal degradation.
Q. Can the DVI-DOC be used with HDMI equipment?
A. Yes, with appropriate DVI to HDMI adapters, the DVI-DOC can interface with HDMI sources and displays. Note that DVI does not carry audio, so HDMI audio would need to be handled separately when using DVI adapters.
Q. What resolutions does the DVI-DOC support?
A. The DVI-DOC supports all standard display resolutions from VGA (640x480) through HDTV 1080p (1920x1080) and WUXGA (1920x1200), covering the full range of professional and consumer display formats in single-link DVI.
