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Electronic Theatre Controls Inc

Upgrading L86 racks from EM64s to EM264s


Customer wanted to upgrade L86 rack with EM64s to EM264s.

Description/Explanation of Issue

EM264s have DMX opto-isolation, so I3M is not necessary.   


  1. Replace EM64s with EM264s.  They are compatible.  Make sure front panel switches are all set appropriately.  EM264s also has a DMX2 input.
  2. Replace I3M with EMRF.  (The EMRF is a hardware DMX passthough sending the incoming DMX to each of the EM264s in the second row.
  3. This will only work if the top middle position has an EMB (empty airflow) tray, so the DMX isn't wired to it.

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