The 600 was paired with the CMX-200, which took the edit decision list created by the 600, and automatically controlled several VTRs to auto-assemble the final program.
The 600 was controlled using a Digital PDP-11 minicomputer, and the 200 used a Teletype Model 33 terminal to input EDLs from the 600.
It was a computer-controlled linear editing system, with support for up to four VTRs, and also included and controlled a simple video mixer for wipes and fades.
CMX was sold to John Herbert Orr's company Orrox in 1974, and then moved its headquarters to Santa Clara, California.
[citation needed] The CMX keyboard control style was used as a basis of several other editing systems, including Grass Valley, Calaway and Strassner Editing Systems.