It can get messy if you let it. Generally, if I rev an assembly where it is no longer directly interchangeable (form or function) with a previous rev, the hext higher level gets a new rev letter. Marcel duchamp wrote: > Carey Fisher wrote: > >> I like: >> >> PCB100xxxRev0 (xxx in sequence from 001) for bare PCB including Gerber >> filename prefixes >> >> AS100xxxRev0 (matching the PCB xxx) for stuffed PCB Assys. (Usually >> mark the PCB "AS/PCB100xxxRev0") >> >> TP100xxxRev0 (matching the PCB xxx) for Test Processes for the specific >> PCB Assy. >> >> Note that the 100xxx are just assigned in sequence and are not >> meaningful except as they relate between the PCB, AS & TP prefixes. >> These numbers are generally document numbers (AS100xxxRev0 is Assy and >> Assy Drawing AS100xxxRev0) as well as, in AS & PCB cases, hardware >> numbers. Keep the Revs Sync'd!!!!!!!!!!!!!!!!!!!!!!!!!!!!! >> > > > Keep the Revs Sync'd? > > Why? Would this include the BOM also? I'm not sure I understand the > idea about rev levels on documentation all being the same. > > Is this the idea that if you modify the pcb layout, then the schematic, > bom, assy dwgs, etc. all get their rev levels bumped up one to match it? Only if interchangeability is impacted. > If necessary, that is if the different revs become non-inerchangeable. If I change any part number I always prefer to bump the rev of the next higher assy to clue in the operator that something has changed. > > -- *Carey Fisher, Chief Technical Officer New Communications Solutions, LLC *careyfisher@ncsradio.com Toll Free Phone:888-883-5788 Local Phone:770-814-0683 FAX: 888-883-5788 www.ncsradio.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist