10G Dual Link 4K60 4:4:4 Fiber KVM Extender Transmitter

What does "dual link" mean on the VLEX-DH10GF-TX/RX system, and why does it matter? The VLEX-DH10GF-TX and VLEX-DH10GF-RX each use two independent 10GbE fiber links simultaneously — the transmitter to encode and send, the receiver to receive and decode — carrying a single uncompressed 4K60 4:4:4 signal between them. A standard 10Gbps fiber link cannot carry full 4K60 RGB 4:4:4 uncompressed video on its own; the uncompressed bandwidth exceeds 10Gbps at that resolution and color format. By bonding two 10G links, the system delivers 4K60 4:4:4 end-to-end with no compression, no chroma subsampling, and no perceptible latency — critical for color-critical, medical imaging, and broadcast applications.

What SFP+ modules are compatible, and what distances can the system achieve? Both the transmitter and receiver accept IEEE 802.3ae-compatible SFP+ modules supporting a dual-optical fiber connection (LC-style or pre-terminated crossover cable). With matching OM3 multi-mode modules at each end, the system reaches 300m; OM4 multi-mode extends to 550m; single-mode modules extend to 30km. Exact reach depends on the specific SFP+ modules installed at both ends — consult VigilLink or your SFP+ module documentation for per-module distance specifications before deployment.

Can the TX/RX system be used as part of a matrix switching system? Yes. Multiple VLEX-DH10GF-TX transmitters and VLEX-DH10GF-RX receivers can be connected through a 10-Gigabit fiber Ethernet switch with jumbo frame and IGMP snooping support to form a distributed video matrix. Any transmitter can route its signal to any receiver — or group of receivers — through software-defined routing managed via the optional IP Master Controller. This eliminates dedicated point-to-point fiber runs for each TX/RX pair and creates a flexible any-to-any AV distribution architecture over shared fiber network infrastructure.

What USB devices are supported through the USB KVM passthrough? The USB passthrough on both the transmitter and receiver supports USB HID (Human Interface Device) class devices only — keyboards, mice, trackballs, touchpads, and similar input peripherals. Mass storage devices, webcams, audio interfaces, and other USB device classes are not supported. Each unit provides three USB Type-A ports for connecting multiple HID peripherals simultaneously, and a USB Type-B service port for device configuration and firmware updates.

Does the system support HDR content? What HDR formats pass through? Yes. The VLEX-DH10GF-TX accepts HDR10 content from the source and passes HDR10 metadata and 10-bit color depth through the fiber link; the VLEX-DH10GF-RX outputs it intact to the display. Supported HDR-capable formats include 3840×2160p@24 HDR10, 3840×2160p@50/60 (4:2:0) HDR10, 4096×2160p@24 HDR10, and 4096×2160p@50/60 (4:2:0) HDR10. Both source and display must be HDCP 2.2 compliant for HDR content to pass through.

What is genlock mode and when should it be used? Genlock mode synchronizes the system's video output to an external reference signal, ensuring frame-locked, tear-free delivery at the receiver's display output. Dual-link operation requires genlock mode for uncompressed 4K60 4:4:4 RGB transmission. This mode is essential in broadcast environments where multiple video feeds must be frame-synchronized, in surgical imaging where the display must lock to the camera timing, and in video wall systems where multiple receiver outputs must remain in perfect sync to prevent visible artifacts at tile boundaries.

What control options are available for the TX/RX system? Basic configuration on each unit — source selection and OSD menu navigation — is available via the front-panel buttons and on-screen display. For advanced features such as multiview configuration, distributed matrix routing, video wall layout, and system-wide management across multiple TX/RX pairs, the optional IP Master Controller or compatible PC-based control software is required, connected via the onboard LAN (RJ-45) port on each unit. The LAN port also enables IP-based monitoring and integration with third-party AV control systems.

How does the bidirectional audio work between the transmitter and receiver? Both the VLEX-DH10GF-TX and VLEX-DH10GF-RX include a 3.5mm analog audio input and a 3.5mm analog audio output, each rated at 2Vrms maximum with greater than 80dB signal-to-noise ratio. Audio connected at the transmitter location is sent to the receiver output; audio connected at the receiver location is returned to the transmitter output — enabling low-latency two-way communication alongside the one-way video stream. This supports IFB/talkback in live production, coordination between an OR and a viewing room in surgical environments, and voice communication between source and display locations in any remote collaboration scenario.