That would all depend upon the interconnect strategy, which hasn't reached consensus either.
Based on the early module list, a bus probably isn't necessary, and individual ribbon cable and/or coax will do if speeds stay low. On Dec 21, 2010, at 2:34 PM, Bruce Griffiths <[email protected]> wrote: > Another factor to consider is that ps stability requires using coax > connectors that are mechanically stable to within a few microns ie no BNCs. > > Bruce > > Don Latham wrote: >> I agree about the ebay finds. Bad to design the boards form factor around >> old chassis. >> Maybe the thing is to find out from the electronic design how big the >> board(s) will have to be or what the electronic footprint is, then go from >> there? If the boards are designed so that idiosyncratic mounting is >> possible, we can all mount them according to our own taste? >> >> Don >> >> Chris Albertson >> >>> You can't plan a project like this around eBay junk. How would you >>> assemble >>> 100 kits if each kit requires that you find a specific HP instrument on >>> eBay? >>> >>> If cost is a big issue then I'll go back to my first idea. Make your PCB >>> about >>> the size os a disk drive. Then yu get a llength od 1 x 1/4 inch aluminum >>> L >>> and bend it into a three sided "U" and attach it to three sides of the >>> PCB. >>> >>> The finished assembly should fit into any enclusre designed to hold SATA >>> disk drives. A PC case could work but there are nicer looking boxes, rack >>> mount and diesktop >>> >>> This trades a bit of metal working for the cost of a Hammond box. But >>> the metal work requires only a hack say and drill. >>> >>> >>> >>> On Tue, Dec 21, 2010 at 8:35 AM, Bob Bownes<[email protected]> wrote: >>> >>>> I do the same with Tek 500/500series instrumentation plugins. You can >>>> get >>>> the TM504 mainframe for< $50 on ebay and scrap grade modules for< $10. >>>> Plus you get a linear power supply, backplane and already RF rated >>>> enclosure. >>>> >>>> On Tue, Dec 21, 2010 at 11:12 AM,<[email protected]> wrote: >>>> >>>> >>>>> Hi >>>>> One source of boxes to consider is old HP equipment, some is very >>>>> reasonably priced, like 37203 for small boxes and a 59401A makes an >>>>> ideal >>>>> housing >>>>> for a Rb with clock GPS and backup power. Some times you can even use >>>>> part >>>>> of the guts. I even went as far as repackaging my 5062C into a HP case >>>>> of >>>>> that generation, heresy in the eyes of some of you >>>>> Bert Kehren Miami >>>>> >>>>> >>>>> _______________________________________________ >>>>> time-nuts mailing list -- [email protected] >>>>> To unsubscribe, go to >>>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>>>> and follow the instructions there. >>>>> >>>>> >>>> _______________________________________________ >>>> time-nuts mailing list -- [email protected] >>>> To unsubscribe, go to >>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>>> and follow the instructions there. >>>> >>>> >>> >>> >>> -- >>> ===== >>> Chris Albertson >>> Redondo Beach, California >>> >>> _______________________________________________ >>> time-nuts mailing list -- [email protected] >>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >>> >>> >> >> > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
