Hi Li, can you share more info about your project? Luciano www.timeok.it
From "time-nuts" time-nuts-boun...@febo.com To "Discussion of precise time and frequency measurement" time-nuts@febo.com Cc Date Sat, 26 Nov 2016 13:16:34 +0800 Subject Re: [time-nuts] New Timestamping / Time Interval Counter: the TICC Great job. I am doing a similar project too. I've just sent gerber/pos/bom files to the PCB&SMT company. 3 tdc7200s are used on my board to support the 3-corner-hat measurement. Regards Li Ang ---Original--- From: "John Ackermann N8UR"<j...@febo.com> Date: 2016/11/25 22:57:33 To: "Discussion of precise time and frequency measurement"<time-nuts@febo.com>;"David"<mcqu...@sonic.net>; Subject: Re: [time-nuts] New Timestamping / Time Interval Counter: the TICC Hi Dave -- I should clarify -- this UI is just a character-based menu system using a dumb terminal program. The code is implemented within the Arduino. It's written in the somewhat nonstandard C/C++ used by the Arduino IDE. This morning I'm going to add a "TODO-UI" file to the git repository explaining what the menu system needs to do. TimeLab is able to read the data stream and plot results in real-time, so there's no urgent need for software on the host end. But I do need to allow the user to set a number of configuration parameters without having to recompile the code, so that's the urgent goal. Thanks! John ---- On 11/25/2016 03:26 AM, David wrote: > John, > > In what language is the GUI written? I might be able to help on > that, or other parts of the software, if someone else hasn't yet > volunteered. > > Dave, WA8YWQ > > On 2016-11-24 06:43, John Ackermann N8UR wrote: > >> Hi Anders -- >> >> Thanks, and thanks for the info on the 53230A. I have not used one of >> those myself but the data sheet lists 20ps single-shot. >> >> Also I should note that the TICC does not compete with counters like >> the 53230A for high speed measurement, or frequency counting. It does >> far fewer measurements per second than the high-end counters -- my >> design criteria was for use in PPS measuring system. >> >> With the current software, the actual measurement processing time is >> about 1 millisecond; we may be able to optimize a hundred or two >> microseconds from that as the code currently has more 64 bit >> operations than are necessary, and there are other things that can >> surely be tweaked. >> >> The killer is the serial output via USB. It can take up to 10 ms to >> output 20 characters, and that's what really limits the measurement >> rate. I'm pretty sure this can be improved (one idea is to buffer >> results to reduce USB packetization delays), but there's other >> functionality that I need to finish first. >> >> BTW -- the software is open source and on github at >> https://github.com/TAPR/TICC , so I welcome anyone who wants to work >> on it. Bug fixes are gladly accepted, and if you're looking for work >> to do, I could use a volunteer to work on a couple of areas, most >> critically finishing a UI that will allow the user to set operating >> parameters. >> >> John >> ---- >> On 11/24/2016 02:40 AM, Anders Wallin wrote: >>> Nice work! >>> On the website in the introduction you mention 22ps single-shot >>> time-stamping on the 5370A/B. >>> I think it's well established that the 53230A does about 11-12 ps for >>> time-intervals, which corresponds to about 9 ps single-channel. see for >>> example: >>> http://www.anderswallin.net/wp-content/uploads/2015/04/53230A_PPS_skew.png >>> >>> Anders >>> >>> >>> On Wed, Nov 23, 2016 at 11:13 PM, Peter Vince <petervince1...@gmail.com >>> <mailto:petervince1...@gmail.com>> >>> wrote: >>> >>>> Fantastic John - well done! Yes, I'll definitely put an order in as soon >>>> as possible. >>>> >>>> Regards, >>>> >>>> Peter (G8ZZR, London) >>>> _______________________________________________ >>>> time-nuts mailing list -- time-nuts@febo.com <mailto: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 <mailto: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 <mailto: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. _______________________________________________ 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.