Re: [time-nuts] Oncore VP problem
Nigel, Your computer may be sensing the serial data stream and declaring it to be a mouse. This is a generic problem having nothing to do with Tac32 but it and the solution are in the CNS Clock II and Tac32 manual available where you got the software. P.S., I am in the UK at the AMSAT-UK conference. Rick W2GPS AMSAT LM2232 -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Thursday, July 19, 2007 6:13 AM To: time-nuts@febo.com Subject: Re: [time-nuts] Oncore VP problem ); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] In a message dated 19/07/2007 02:44:42 GMT Daylight Time, [EMAIL PROTECTED] writes: My suggestion is that you pick up a free evaluation copy of Rick Hambly's TAC32 software at http://cnssys.com/cnsclock/Tac32Software.html . TAC32 knows all the quirks options that ever existed in a Motorola receiver, going all the way back to the Rev.3 PVT6. Then if you find it useful, a legal copy can be purchased from Rick, or at members discount from TAPR (http://www.tapr.org/gps_tac32.html). --- Hi Tom Many thanks for the suggestion. You may have seen my subsequent post in which I commented that I had tried TAC32 without solving my problem, only to find the kit was working ok but with an incorrectly labelled connector. TAC32 does look useful though so I'll check it over more thoroughly later. One interesting side effect.. Some time after shutting down TAC32 last night, but with the Oncore still connected to the serial port and outputting data, my PS2 connected mouse started misbehaving, with the pointer jumping all over the place then settling down for a while before repeating the performance. It didn't occur to me at first that the incoming serial data might have anything to do with it until it started again this morning and I eventually stopped it by disconnecting the serial lead from the receiver. Whilst I can't say for sure that running TAC32 was what caused it, it's not something I've ever seen in the past nor previously this past few days after running WinOncore. I'll check later to see if the port shut down properly and also take a look at the Oncore message stream, perhaps TAC32 may have changed something there as part of its auto setup routine? regards Nigel GM8PZR ___ 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.
Re: [time-nuts] Sawtooth correction with a slower TIC
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] Tom, That version was done a few years back when I was big on recycling parts, so let me dig through my junkbox and see if I still have one around. Richard ); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] I am very happy to hear you did this already. Impressive. Is there a prototype I could test here in my lab? I'd be very interested in measuring it. I hope to finish testing a dozen or more GPSDO this year; would like to have something this simple in the mix. /tvb - Original Message - From: Richard H McCorkle [EMAIL PROTECTED] Tom, I did most of the software development work using just the uncorrected 1PPS into TMR0 and two scaled and summed PWM outputs instead of a DAC, and the results were surprizingly good. It made a very low cost, small footprint design without the external counters and DAC. All the added extras since are just part of my continuing education. Richard - Original Message - From: Tom Van Baak [EMAIL PROTECTED] My original design used a 50 MHz TIC clock and the TMR0 prescaler as the phase counter giving 20ns single sample resolution in the prototype system. In this case how about making a super-simple GPSDO and just put the uncorrected 1pps directly into TMRO. The sawtooth jitter of an M12+ is 9 ns rms, which is just the magnitude you need to improve on the 20 ns single shot PIC-based TIC resolution. If you average long enough even hanging bridges will not be a concern. You'd have to do some work to get fancier, but it's hard to imagine a PIC-only GPSDO that would be simpler. /tvb ___ 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.
Re: [time-nuts] Oncore VP problem
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] In a message dated 19/07/2007 14:58:59 GMT Daylight Time, [EMAIL PROTECTED] writes: This is a well known quirk/feature of Windows itself. There is a way of curing it (other than using a better OS) but I cant recall the details at the moment. Bruce Thanks Bruce I've got it sorted now, for the time being at least:-) I'd love to use a better OS, have tried a few flavours of Linux for example after spending a long time working with Unix servers, but there are still applications where Windows is the only viable OS. In my case, the biggest single factor is the Winradio software for the G313. There isn't a viable alternative, not that I've seen so far anyway, and it took long enough to get all the quirks ironed out under Windows, so certainly not an area where I'd want to try an emulator. If I've got to keep Windoze for that then I'm less tempted to run another OS for anything else. regards Nigel GM8PZR ___ 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.
Re: [time-nuts] Oncore VP problem
In a message dated 21/07/2007 18:45:43 GMT Daylight Time, [EMAIL PROTECTED] writes: Your computer may be sensing the serial data stream and declaring it to be a mouse. This is a generic problem having nothing to do with Tac32 but it and the solution are in the CNS Clock II and Tac32 manual available where you got the software. P.S., I am in the UK at the AMSAT-UK conference. --- Hi Rick Many thanks for your comments. You're quite right and all is under control again:-) I've obviously been lucky in the past, in that I've not come across this before and it seems to be only certain strings that trigger it. Running WinOncore had enabled the Ea and Ek commands but it was the Bb string enabled by TAC32 that triggered the problem, in this instance anyway. Now I'm aware of the potential it'll be easier to deal with in the future. I haven't had a chance to explore TAC32, or the manual, any further yet but it looks good and I'll be coming back to it soon. Welcome to sunny Guilford, you're about 75 miles from where I lived for many years. and nearly 475 from where I am now:-) The west coast of Scotland is supposed to be the wettest part of the UK, and normally lives up to that reputation, but it's been quite sunny here of late, certainly no wetter than normal, and could almost be considered drought conditions compared to what some other parts of the country have suffered rece ntly. Enjoy your stayand stay dry:-) regards Nigel GM8PZR ___ 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.
Re: [time-nuts] Oncore VP problem
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Thanks Bruce I've got it sorted now, for the time being at least:-) I'd love to use a better OS, have tried a few flavours of Linux for example after spending a long time working with Unix servers, but there are still applications where Windows is the only viable OS. In my case, the biggest single factor is the Winradio software for the G313. There isn't a viable alternative, not that I've seen so far anyway, and it took long enough to get all the quirks ironed out under Windows, so certainly not an area where I'd want to try an emulator. If I've got to keep Windoze for that then I'm less tempted to run another OS for anything else. regards Nigel GM8PZR Nigel Problems that occur when an active serial data source is connected to a PC serial port are not restricted to Windows. If one booted a FreeBSD machine with an active GPS timing receiver connected to a serial port, the serial buffers would overflow. This problem/feature appears to have since been fixed, at least for FreeBSD6.1. Bruce ___ 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.
Re: [time-nuts] Oncore VP problem
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] In message: [EMAIL PROTECTED] Dr Bruce Griffiths [EMAIL PROTECTED] writes: : If one booted a FreeBSD machine with an active GPS timing receiver : connected to a serial port, the serial buffers would overflow. : This problem/feature appears to have since been fixed, at least for : FreeBSD6.1. Well, the warnings that told you that data was being thrown away were removed. They never were a problem other than to be noisy on the console for no good reason... Warner ___ 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.
Re: [time-nuts] Oncore VP problem
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] M. Warner Losh wrote: In message: [EMAIL PROTECTED] Dr Bruce Griffiths [EMAIL PROTECTED] writes: : If one booted a FreeBSD machine with an active GPS timing receiver : connected to a serial port, the serial buffers would overflow. : This problem/feature appears to have since been fixed, at least for : FreeBSD6.1. Well, the warnings that told you that data was being thrown away were removed. They never were a problem other than to be noisy on the console for no good reason... Warner Warner If it had only been that innocuous, I wouldn't have mentioned it. The machine locked up every time, even disconnecting the GPS receiver serial cable didn't help. It was necessary to reboot the machine with the GPS receiver unplugged and then reconnect it after starting ntpd. Bruce ___ 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.
