To add a small dose of additional complexity, Visual Basic 6.0 (and I suspect other dev tools of that generation) only support COM ports up to 16. Not as bad as 4, but still a problem on occasion.
Didier KO4BB On January 4, 2015 12:03:05 PM CST, Bob Camp <kb...@n1k.org> wrote: >Hi > >Ok, off into serial land …. > >The GPSDO does not really know or care what port it’s on. It will be >just as happy on port 119 as on port 4. It (by design) does care about >the baud rate / data bits / parity / stop bits. This is as true with a >USB to serial as with a direct serial card. That’s the good news. Now >for the rest of the news. > >If your computer operating system is old enough, you may only *have* 4 >com ports. Bad news there = upgrade the computer. Typically this is a >Windows 95 and earlier issue. > >If the software running on the computer is old enough it may only >*know* how to use 4 com ports. Bad news is same = upgrade the software. >Typically this is a Windows 95 era (mid 90’s) issue. > >If the drivers on the serial to usb converter are old enough, they may >only talk as 4 com ports (I’ve never seen this on a modern OS). Same >news = upgrade the driver. > >All this relates to Windows. The cutoff times and versions for other >OS’s are a bit more obscure. The same basic details apply. > >———— > >If you are running on an XP or newer machine, you should have far more >than 4 com ports available. If you are running any of the newer ( = >past 2000) software to talk to the box, it should be quite happy to >deal with more than 4 com ports. > >My *guess* is that you need a different piece of software. Exactly what >you are doing will determine which one you need. ( = more info >required). > >--------- > >> On Jan 4, 2015, at 10:50 AM, James Robbins <jsrobb...@earthlink.net> >wrote: >> >> My new old HP58503A wants to connect to my PC on Com 1-4. Other PC >devices are already using those 4 Com ports. >> >> Is there any way to connect it to a Com port other than one of those >1 to 4? >> >> I currently use an Edgeport USB-to-Serial Converter which works very >well to communicate with the PC and to assign Com ports to my various >GPS units. But, as far as I know, the chosen Edgeport Com port must >fall within the range of Com ports which for which the device is >designed. >> >> If this has been answered, please point me to the discussion. Many >thanks. And, Happy New Year to all, with wishes for a more peaceful >(and timely - couldn't resist) year. > >I have this terrible urge to start a calendar thread revolving around >“new” years … so far I’ve resisted the urge. It’s *very* difficult >….arrrrrgggghhh…. > >Bob > >> >> Jim Robbins >> N1JR >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > >_______________________________________________ >time-nuts mailing list -- time-nuts@febo.com >To unsubscribe, go to >https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >and follow the instructions there. -- Sent from my Motorola Droid Razr HD 4G LTE wireless tracker while I do other things. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.