United Kingdom 
Gerber RS274x
The launch of the extended Gerber format (RS274x) was a big step forward for the whole industry. All the aperture wheel information is part of the layer file and new aperture forms and sizes are possible.Positive and negative elements can be handled within one file. Example for an Extended Gerber-File
%ADDD11,C0.004%*
%ADDD12,C0.008%*
%ADDD13,S0.004%*
%ADDD14,S0.008%*
G54D10*
X0000Y0000D02*
X0000Y1000D02*
X1000Y1000D02*
X0000Y1000D02*
X0000Y0000D02*
| Data type | Description |
|---|---|
| Design layers | one file per layer |
| Contour | different files for the single PCB and the delivery panel if there is one format it should be gerber |
| Drill data |
different files for PTH/NPTH/sequential PTH drill diameter defined in the file header format should be Excellon or Sieb&Meyer |
| Compression | all data specified above should be compressed in a ZIP File. It’ s helpful if the Zip file name corresponds to the project name |
