Interestingly, Gregory just posted about his success with some FTDI USB/RS-232 cables that are the real thing in a separate thread.
On Thu, Sep 6, 2018 at 7:03 PM Didier Juges <[email protected]> wrote: > Not sure what you refer to. I have made a large number of > microcontroller-based Thunderbolt monitor kits and they do not have that > issue. > In any event, a problem like this cannot be the fault of the Thunderbolt, > all it does is send data. It's up to the receiver to process it, including > properly picking up data mid-stream. > > As Dave pointed out, if you are using USB-serial adapters and a PC, all > bets are off. There are many substandard devices in that category. > My personal preference is for the Silabs CP210x series and the Chinese > CH340/341. Stay away from the Prolific and FTDI parts unless you know > exactly what you are getting. They have been extensively cloned with > extremely poor quality parts and the legitimate vendors have mangled up > their drivers in order to try and prevent the clones from working with > those (and in some cases intentionally trying to damage the device), the > net result being a total mess of unreliable parts and software. > > > On Tue, Sep 4, 2018 at 2:56 PM skipp via time-nuts < > [email protected]> wrote: > >> Re: Trimble Thunderbolt Start Up RS-232 Communications Glitch >> >> Hello to the Group, >> >> Would anyone be able to help provide a bit of insight >> or experience in dealing with what I call the an initial >> Trimble Thunderbolt GPSDO RS-232 communications glitch >> (during initial power on/up). >> >> I've noticed some of the programs (Lady Heather) and >> external status monitor devices (my own), sometimes >> seem to initially stutter, freeze or even lock up if >> the RS-232 cable connection is made (as one would expect >> to be normal). >> >> Establishing a working initial power on/up, serial >> port monitor function can require a physical disconnect >> from the GPSDO. Once everything is on, the physical RS-232 >> connection can be made and monitor functions operate >> well going forward. >> >> Would there be a hardware or software "serial comm >> preamble" or power-on sequence, best order of >> operation? The physical disconnect RS-232 comm >> reset is more than casually inconvenient. >> >> Thank you in advance for your replies >> >> Cheers, >> >> Skipp >> >> skipp025 at jah who dot calm. >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >> and follow the instructions there. >> > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
