Atlona Technologies Atlona 8x1 HD/SD-SDI reclocking Switch

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Atlona 8x1 HD/SD-SDI Reclocking Switch Model: AT-SDI81

This AT-SDI81 receives, equalizes, and reclocks up to 8 SDI inputs, perfectly switches the desired input to SDI equipped monitors or receivers. The switch supports both HD/SD-SDI bit rates, and the re-transmitted quality is guaranteed. Through RS-232, IR remote, or front panel push button, the control of the SDI switch becomes versatile and easier. AT-SDI81 offers the most convenient and cost effective means for swift switch and duplication of high quality SDI in the market.


  • HD/SD-SDI Switch
  • Up to 8 equalized & re-timing SDI inputs
  • Dual Color LED indication of HD/SD of the output SDI
  • Automatic detection of the SDI Input
  • Synchronizes input/output (switch after vertical sync)
  • Provides the equalized and reclocked transmission path up to 300m (1000ft) at SD-SDI or 150m (500ft) at
  • Multiple control by RS-232, IR remote, and push button

Technical Specifications:

  • SDI standards: SD-SDI & HD-SDI
  • Auto HD/SD-SDI detection: Yes
  • Supported protocols: SMPTE 259M / SMPTE 292M
  • Video bandwidth: Single-link [1.485Gpbs & 1.485/1.001Gbps]
  • Data rates: 143 / 270 / 1483 / 1485 Mbps
  • Video support:
    [HD] 720p50/59.94/60, 1035i50/59.94/60, 1080i50/59.94/60, 1080p24/30
    [SD] NTSC@59.94Hz, PAL@50Hz
  • Output impedance: 75W
  • Reclocking function: Optional upon request
  • Cable equalization: [HD-SDI] up to 150m (500ft) / [SD-SDI] up to 300m (1000ft)
  • Loop-out: Synchronized BNC loop-out at input and output
  • Audio support: Yes
  • Input: 8x BNC
  • Output: 1x BNC
  • BNC connector: 75W interlocking socket
  • Dimensions [L x W x H]:
    Model 187 x 125 x 43mm [7.4”x4.9”x1.7”]
    Package 330 x 200 x 95mm [1’1“x7.9”x3.7”]
  • Weight: Model 890g [2.0 lbs]
  • Power supply: 5V 4A DC
  • Power consumption: 10 Watts [max]
  • Operation temperature: 0~40°C [32~104°F]

Package Includes:

  • 1x AT-SDI81
  • 1x IR remote controller
  • 1x 5V power adapter
  • 1x User Manual


3 year manufacture warranty (parts&labor)


These input & output are strictly used for device which handles synchronizing V-Sync signals across all sources for this model. The purpose of this function is to avoid flickering or “bright/dark” screen appeared between channel switch. User can connect the synchronizing device to SYNC-IN, and use SYNC-OUT to connect next device he wants to do V-Sync signal synchronization.

RECLOCKING FEATURE: A Reclockin feature first equalizes, then extracts a clock from the signal and cleans up the eye pattern. It is useful to avoid signal loss due to cable length.

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