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Kramer VM-4UX 1:4 4K 12G SDI DA

Model: VM-4UX

Kramer VM-4UX 1:4 4K 12G SDI DA
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About: Kramer VM-4UX 1:4 4K 12G SDI DA

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 — [email protected] (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.



  • 1 SMPTE 259M (SD–SDI), 292M (HD–SDI), 344M (ED–SDI), 424M (3G HD–SDI), ST–2081 (6G–SDI) and ST–2082 (12G–SDI) compliant serial video, 75Ω on a BNC connector


  • 4 equalized and reclocked SMPTE 259M (SD–SDI), 292M (HD–SDI), 344M (ED–SDI), 424M (3G HD–SDI), ST–2081 (6G–SDI) and ST 2082 (12G–SDI), outputs 75Ω on BNC connectors

Cable Equalization Reach

  • 12Gbps: Up to 80m (260ft), 3Gbps and 6Gbps: Up to 100m (330ft), 1.5Gbps: Up to 200m (660ft), SD: Up to 300m (980ft), Note: The above specs apply when using Kramer cables


Maximum Output Level

  • 800mVpp /75Ω


  • AC

Standards Compliance

  • SMPTE 259M (SD–SDI), 292M (HD–SDI), 344M (ED–SDI), 424M (3G HD–SDI), ST–2081 (6G–SDI), ST–2082 (12G–SDI)

Power Consumption

  • 5V DC, 250mA

Power Source

  • 5.2V/4A


  • Tools size, Aluminum type


  • Convection ventilation

Operating Temperature

  • 0° to +40°C (32° to 104°F)

Storage Temperature

  • –40° to +70°C (–40° to 158°F)


  • 10% to 90%, RHL non–condensing

Included Accessories

  • Power supply, mounting bracket, 2 male BNC 75Ω terminators

Product Dimension

  • 12.00cm x 7.15cm x 2.44cm (4.72" x 2.81" x 0.96" ) W, D, H

Product Weight

  • 0.2kg (0.4lbs) approx.

UPC: 7291063080419

Reviews: Kramer VM-4UX 1:4 4K 12G SDI DA

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Warranty: Kramer VM-4UX 1:4 4K 12G SDI DA Warranty:

30 Days

Manufacturer's Warranty:

Limited warranty for seven (7) years from date of original purchase.
Fiber Optic cables have a one (1) year warranty, and Cobra products have a three (3) year warranty.