Video Line Amplifier Kramer Electronics VM-4UX

The Kramer Electronics VM-4UX is a compact 1:4 4K SDI distributor and line amplifier that auto-adapts to the input SDI data rate, equalizes and re-clocks the signal, and delivers four identical SDI outputs. It supports broadcast-grade coaxial connections via lockable BNC connectors and is designed for professional AV and broadcast installations requiring reliable uncompressed SDI signal distribution up to 12G data rates.

Advantages

The unit provides reliable wire connectivity using lockable BNCs to prevent accidental disconnection and ensure stable signal distribution. Built-in input equalization and output reclocking extend transmitted signal reach and improve signal integrity. The VM-4UX auto-adapts over a wide transmitted data rate range (270 Mbps to 12 Gbps) and complies with SMPTE and ST standards for SD, HD and 4K SDI. Status LEDs for input, output data rates and power simplify maintenance and troubleshooting. Its compact, fan-less DigiTOOLS enclosure enables flexible installation including over-ceiling or side-by-side rack mounting.

Suitable for

• Broadcast and professional AV signal distribution
• 4K and HD SDI feed splitting to multiple destinations
• Live production and studio routing of SDI sources
• Installations requiring extended cable reach and signal reclocking

Key specifications

• Model: Kramer VM-4UX (MPN 10-80441090, EAN 7291063080419)
• Function: 1:4 SDI distributor / line amplifier
• Supported data rates: Auto-adapts from 270 Mbps to 12 Gbps
• Standards compliance: SMPTE 259M, 292M, 344M, 424M; ST-2081 (6G); ST-2082 (12G)
• Max. resolution: 4K@60Hz (4:2:2) 30 bpp
• Signal formats: SDI, HD-SDI, 3G, 6G and 12G SDI with embedded audio and ancillary data pass-through
• Connectivity: Lockable BNC input and four lockable BNC outputs
• Extended reach (approx.): SD up to 300 m; 1.5G up to 200 m; 3G/6G up to 100 m; 12G up to 80 m (depends on cable quality and resolution)
• Enclosure: Compact fan-less DigiTOOLS for over-ceiling or rack mounting
• Indicators: Input/output SDI data-rate LEDs and power LED

How to use

Connect a single SDI source to the lockable BNC input and connect up to four coaxial BNC outputs to your destination devices. Power the unit and observe the LED indicators to confirm input and output data rates. The VM-4UX will auto-adapt to the input data rate, equalize the incoming signal and reclock each output to provide four stable, identical SDI outputs. Use high-quality coaxial SDI cables and secure the lockable BNCs to prevent accidental disconnection.

Ieteikumi lietošanai

For best performance, use broadcast-grade coaxial cables and verify cable length limits for the signal resolution in use; reach and performance vary with cable quality and resolution.