This PCB has been designed as an experimental prototype board containing copper PCB traces in microstrip formation with a controlled tranmission propagation delay (Tpd).
This board has been designed using Cadence ORCad Capture and Cadence Allegro PCB Editor 16.6.
This revision contains two copper traces with an estimated Tpd of 1ns (DL1) and 2ns (DL2).
Some useful information regarding exporting the Gerber and NC drill files from Allegro:
- http://oshpark.com/guidelines
- http://support.oshpark.com/support/articles/140120-cadence-allegro-gerber-post-processing
- http://support.oshpark.com/support/solutions/articles/117060-cadence-allegro-drills-file
In order to generate the appropriate Gerber layers, use the provided ns_gerber.il script. Use the following commands in Allegro:
skill
load("...path to ns_gerber.il")
ns_gerber
- boardname.GTL Top Layer
- boardname.GBL Bottom Layer
- boardname.GTS Top Soldermask
- boardname.GBS Bottom Soldermask
- boardname.GTO Top Silkscreen
- boardname.GBO Bottom Silkscreen
- boardname.GKO Board Outline
- boardname.G2L only if you're uploading a four layer board
- boardname.G3L only if you're uploading a four layer board
- boardname.XLN Drills