Printed circuit board manufacture request
=========================================

Name			I2C2P revision 20041206
Construction class	4
Shape			Rectangle, middle of the outline that is present in
			all layers
Width                   3479.00 mil (88.367 mm)
Height                  2162.09 mil (54.917 mm)
Layer file format	Gerber RS 274X
Drill data format	Excellon
Drill data meaning	Final diameter of hole
Rounding hole		Round toward bigger diameter
	diameters
Layers			Two-layer through-plated, 2x soldermask, 2x silkscreen
Material                FR4
Material thickness      1.5mm
Copper thickness        18um
Chirality		All layers are presented as if viewed from one side
                         ("component side"). both coppers contain text.
Copper polarity		Positive. Dark places in file mean copper.
Soldermask polarity	Negative. Clear spaces in file mean mask matter.
Silkscreen polarity	Positive. Dark places in file mean paint
Through-plating		Some holes are through-plated
Gold-plating		None
Surface treatment	Hot Air Levelling
Edge treatment		Shearing
Testing			Optical if at least 3 pieces are manufactured

Note: Gerber RS274 format means "Gerber RS-274X Format", defined in the year
1998 by company Barco Graphics N.V., Gent, Belgium (Barco ETS, Tramstraat 69,
B-9052 Gent, etsinfo@barco.com), see
http://nexp.cs.pdx.edu/twiki-gerber/pub/Gerber/GerberFiles/rs274xrevd_e.pdf

File meaning
============

i2c2p.pcb.output_back.gbr            Solder side - copper
i2c2p.pcb.output_backmask.gbr        Solder side - soldermask
i2c2p.pcb.output_backsilk.gbr        Solder side - silkscreen
i2c2p.pcb.output_fab.gbr             Drilling checkplan
i2c2p.pcb.output_front.gbr           Component side - copper
i2c2p.pcb.output_frontmask.gbr       Component side - soldermask
i2c2p.pcb.output_frontsilk.gbr       Component side - silkscreen
i2c2p.pcb.output_plated-drill.cnc    Drill data - throughplated holes
i2c2p.pcb.output_unplated-drill.cnc  Drill data - unplated holes

Views
-----
Views are in PostScript format and have only informal meaning to check
that the data have been interpreted correctly. They are not intended for
being exposed on a film. They may be not up to scale.

i2c2p.pcb.output_assembly.ps   Assembly plan
i2c2p.pcb.output_fab.ps        Drilling checkplan
i2c2p.pcb.output_back.ps       Solder side - copper. Differs from
                                 Gerber - holes are shown here!
i2c2p.pcb.output_backmask.ps   Solder side - soldermask. Opposed
                                 polarity to Gerber!
i2c2p.pcb.output_backsilk.ps   Solder side - silkscreen
i2c2p.pcb.output_front.ps      Component side - copper. Differs
                                 from Gerber - holes are shown
                                 here!
i2c2p.pcb.output_frontmask.ps  Component side - soldermask. Opposed
                                 polarity to Gerber!
i2c2p.pcb.output_frontsilk.ps  Component side - silkscreen