1:4 4K 12G SDI DA

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  • 1:4 4K 12G SDI DA
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The VM−4UX is a compact and high performance 1:4 4K distributor for standard broadcast−grade SDI signals of up to 12G transmitted data rate. It auto−adapts to the data rate of one SDI input signal, equalizes and re−clocks the signal to improve transmitted signal reach, and distributes the signal to four identical SDI outputs.

  • Reliable Wire Connectivity — Coaxial broadcast–grade cables are reliably connected via lockable BNC connectors, preventing unintentional wire disconnections, to gain fast and highly professional uncompressed SDI signals distribution deployments.
  • Extended–reach Input Extension — Input signal equalization and output signals reclocking to gain extended–reach signal extension. Using Kramer high–quality coaxial SDI cables, supports extension of up to 300m (984ft) for SD signals; 200m (656ft) for 1.5G HD signals; 100m (328ft) for 3G and 6G HD signals; 80m (262ft) for 12G 4K signals.
    Note: Reach depends on signal resolution, and quality of copper cable used. Reach extension performance may vary while using non–Kramer coaxial cables.
  • Transmitted Data Rate — Auto–adapting from 270Mbps to 12Gbps data rates.
  • Compliance — Complies with SMPTE 259M (SD–SDI), 292M (HD–SDI), 344M (ED–SDI), 424M (3G HD–SDI), ST–2081 (6G–SDI) and ST–2082 (12G–SDI) standards.
  • Max. Resolution — 4K@60Hz (4:2:2) 30bpp.
  • SDI Signal Transmission — SDI, HD–SDI, 3G HD–SDI, 6G and 12G SDI compliant signals, supporting pass–through of standard embedded audio channels with ancillary ID and metadata information.
  • LED Indicators — Status indicators for transmitted SDI data rate of input and output connected signals, and power indicator, for ease of maintenance and troubleshooting.
  • Easy Installation — Compact DigiTOOLS™ fan–less enclosure for small footprint spaces and over–ceiling mounting, or side–by–side rack mounting.


  • SDI video production studios
  • Broadcast studio and field SDI video production events
  • Staging and rental deployments
  • Medical facilities with highly reliable video deployments



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Cable Inputs Outputs Audio Features
BC-RG63G 1 Coax RG−6 Broadcast Quality Optimized for 3G HD−SDI Bulk Cable Bare End Bare End N/A Lengths − 500−1000ft (152−305m)
BC-1X 1 Coax RG−6 Super High−Resolution Bulk Cable Bare End Bare End N/A Lengths − 328−984ft (100−300m)
C-BM/BM BNC Coax Video Cable 1 - BNC (M) 1 - BNC (M) Lengths − 1.5−150ft (0.5−45.7m)
C-MBM/MBM BNC Mini Coax Video Cable 1 - BNC (M) 1 - BNC (M) N/A Lengths − 1−25ft (0.3−7.6m) Mini Coax Cable