Sim.One board construction notes

14 August 2005

This is to be a 12 layer board with the layer stack as called out on fabrication drawings

Additional pwb information can be found on mechanical layers and the drill drawing of the gerbers.
LAYER 1— TOP LAYER SIM1_B.GTL
LAYER 2— MID LAYER 1 SIM1_B.G1
LAYER 3— MID LAYER 9 SIM1_B.G9
LAYER 4— MID LAYER 7 SIM1_B.G7
LAYER 5— MID LAYER 5 SIM1_B.G5
LAYER 6— MID LAYER 3 SIM1_B.G3
LAYER 7— MID LAYER 2 SIM1_B.G2
LAYER 8— MID LAYER 6 SIM1_B.G6
LAYER 9— MID LAYER 4 SIM1_B.G4
LAYER 10— MID LAYER 8 SIM1_B.G8
LAYER 11— MID LAYER 10 SIM1_B.G10
LAYER 12— Bottom Layer SIM1_B.GBL

Gerber layer naming conventions

The following extensions are used for Gerber files. The format is .GTL (for the top layer, etc):
Top (component side) layer .GTL
Bottom (solder side) layer .GBL
INTERNAL SIGNAL LAYERS .G (1,2,3)
INTERNAL PLANE LAYERS .GP (1,2,3,4,5)
Top Overlay (silkscreen) .GTO
Bottom Overlay (silkscreen) .GBO
Top Paste mask layer .GTP
Bottom Paste mask layer .GBP
Top Solder mask layer .GTS
Bottom Solder mask layer .GBS
Drill Guide Top/Bottom pair .GG1
Keep Out layer .GKO
Mechanical (fab & assy) layers 1- .GM1 (2,3,4)
Drill Drawing Top/Bottom pair .GD1
Aperature Listing .APT
EXCELLON FORMAT NC-DRILL .DRL .DR1, .DR2 etc
DRILL SUMMARY REPORT .DRR
ASCII FORMAT OF EXCELLON DRILL .TXT

Board specifications