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Technical resources

Signals and cables on one sheet

SDI, HDMI, NDI, HDBaseT, fibre and audio networks: the numbers you need when you plan cable runs, and the habits that stop a route failing on the night.

PDF, 1 page · 232 KB · Updated November 2026

Most signal faults at events are planning faults: an HD run that was fine at 1080i and isn't at 1080p50, an HDMI cable asked to do 20 metres, NDI sharing a switch with the registration desk. This sheet puts the numbers that decide those things on one page, so the cable schedule is right before the van is packed.

What's on it

  • SDI standards, bit rates and typical coax run lengths, with the caveat that matters: patches and barrels eat into them.
  • When to stop using HDMI and what to convert to.
  • NDI bandwidth per stream and how many a gigabit link really holds.
  • HDBaseT versions and distances, fibre types and connectors.
  • Dante, AES67 and ST 2110 in a sentence each.

Run lengths are planning figures from the cable maker's published table. Your receivers, connectors and patching decide the real number, so test the route at show resolution.

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