When I worked in the semi con industry we used to have converters for regular rs232 serial com at 9200 bod. Was a 9 pin sub d at one end of the adaptor then 2 glass fiber cables plugged in to the other. The receptacle and the fiber cable were made by omron. I think the device itself was made in Austria and grew out of some ones basement to small production. The only problems we had were the glass fiber portion of the cables not being crossed when some one had it apart or corrosion on the little PCB due to exposer to HF fumes and other nasties. This was on machines designed and built in the early 90.
On April 22, 2017 9:56:27 AM PDT, Gene Heskett <[email protected]> wrote: >On Friday 21 April 2017 19:10:23 dave wrote: > >Did you get my PM to you yesterday evening? > >> Years ago when I thought fiber might catch-on I grabbed some 62.5/120 >> plenum fiber at Boeing Surplus. >> I got as far as connecting a 10-base2 card to a fiber converter >> fishing out both ends of the fiber on the reel >> and terminating with 3M (?) hot-melt end. It worked nicely but 10 Mhz >> isn't straining fiber very much. The good thing about fiber is the >low >> error rate; something around 1E-12. I just disposed of the converters >> a few days ago. >> Still have several Km of fiber and a few connectors. 10-baseT works >> just fine thru conduit buried between desktop >> (house) and shop. About 35 m. >> >> Dave > >I found, at newark/element14, some more fiber fittings, in this case a > >board mount cover for a 603 sized smd led that the fiber can be plugged > >into, takes 2mm od fiber, snap fit in board holes, at $0.17 a copy from > >Bivar. Found some fiber but in 10" lengths, assembled, so still >looking. >The key brand name seems to be Bivar for the hardware. 603 size smd >leds >are similarly priced. I did find an smd phototransistor, but its target > >is not centered in the package. Not a major problem since I'll probably > >be designing the pcb, but it would be nice to use the same pcb pattern >on both ends. Since Bivar has a phone numnber in the pdf, I'll see if >I >can contact them Monday. Hopefully its still a good number. > >> On 04/21/2017 01:53 AM, Erik Christiansen wrote: >> > On 20.04.17 14:51, Gene Heskett wrote: >> >> The led makers have now had 40+ years to design such a package, >and >> >> I fail to understand why it has not happened. >> > >> > Somewhere near the bottom of my junkbox is an envelope with a pair >> > of Siemens opto-link (real product name long forgotten) devices, >> > which came out around 35 years ago. They're small grey rectangles >> > with through-hole pins, and a fibre entry with ring-nut (like on a >> > collet holder) on one end. Dunno if they're still marketed, though. >> > >> > At Digi-key, this Broadcom offering looks just like one end: >> > >> > >https://www.digikey.com/product-detail/en/broadcom-limited/SP0000638 >> >58/516-2872-ND/2220931 >> > >> > But that would leave the rest of my coil of shielded twisted-pair >> > (for RS485) cable gathering dust. With 7v of permissible >> > common-mode, and differential transmission for noise immunity, what >> > more is really needed? RS485 transceivers are around $2 to $3 IIRC. >> > (I saw some for 25c today, but they were surplus stock of a now >> > obsolete device.) >> > >> > Erik >> > >> > >-------------------------------------------------------------------- >> >---------- Check out the vibrant tech community on one of the >world's >> > most engaging tech sites, Slashdot.org! http://sdm.link/slashdot >> > _______________________________________________ >> > Emc-users mailing list >> > [email protected] >> > https://lists.sourceforge.net/lists/listinfo/emc-users >> >> >---------------------------------------------------------------------- >>-------- Check out the vibrant tech community on one of the world's >> most engaging tech sites, Slashdot.org! http://sdm.link/slashdot >> _______________________________________________ >> Emc-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/emc-users > > >Cheers, Gene Heskett >-- >"There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." >-Ed Howdershelt (Author) >Genes Web page <http://geneslinuxbox.net:6309/gene> > >------------------------------------------------------------------------------ >Check out the vibrant tech community on one of the world's most >engaging tech sites, Slashdot.org! http://sdm.link/slashdot >_______________________________________________ >Emc-users mailing list >[email protected] >https://lists.sourceforge.net/lists/listinfo/emc-users -- Sent from my Android device with K-9 Mail. Please excuse my brevity. ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
