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The open ephys Open Ephys acquisition system uses the SPI standard specified by Intan techTechnologies.

We're using standardized 12pin 12-pin polarized omnetics Omnetics nano connectors on all headstages, tethers and acquisition boards.

On top of ensuring compatibility , this means that multiple tethers can be daisy-chained to make long tethers.

LVDS (low voltage differential signalling) signals mean that long, unshielded tethers of 10m or even more are possible.

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Comparison between standard (commercial from intan) open-ephys SPI tether, and a regular analog tether.

 

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Hand-built fine wire (cooner) open-ephys SPI tether for use in freely behaving mice or songbirds.