The ASM 500 Family consists of a translator between AutoCAD's DXF file format and Gerber photo plotter code. Also included is a reverse translator from Gerber to DXF and a powerful Gerber viewer and plotter. Three versions are available with different feature sets and price points.
low cost version for PCBs. Includes
DXF to Gerber, Gerber to DXF and GBRVU. An extraordinary value!
general purpose: supports PCBs and is a favorite among designers of hybrids, RF circuits, microwave circuits and analog circuits.
This application note suggests guidelines on how to best set up and use AutoCAD to draw good PCB layouts that will translate correctly with ASM 500.
A short video tutorial on drawing technique and layer setup...