Gerber is the commonly used word for RS274D which is the data used to control photoplotters. It's often referred to as Gerber because of the dominance of the Gerber Scientific Company's photoplotters in the 70's and 80's.

Other variants of Gerber include:

  • RS274X - extended Gerber

  • MDA AutoPlot - 274X with proprietary embedded commands for the Fire 9000 Photoplotter                          made by Cymbolic Sciences.
If you'd like to learn more about Gerber see our application note:    Dcodes Apertures and Plot Files