[time-nuts] Maybe A Little Off Topic: connectBlue acquired by u-blox
Hello All, Thought this may interest some of you - I am certainly interested: http://www.u-blox.com/en/ad-hoc-releases/1659-u-blox-acquires-connectblue-adds-wi-fi-and-bluetooth-connectivity.html Best Regards, John W. ___ 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] jupiter-t tu60-d120 (maybe d125), pinguino and GPSDO
Hello, I have been experimenting with a 10Mhz OCXO and a number of GPS units and arduino/pinguino boards in order to build a gpsdo. The pinguino micro is interesting, with it being a 32bit microchip pic32mx440 chip with a USB interface to the computer. Based on arduino code I have seen on this list, I have an interrupt routine which runs on the pps pulse and which checks the value of a counter running from the 10Mhz ocxo (Morion MV89A), giving me a nice frequency counter. I initially had it hooked up to a trimble resolution t but the res t seems to have died (: I have to investigate it's death further ... it appears to work but never sees any SVs when hooked to my outside antenna, but worked on an inside antenna. I removed it from my ugly-style board. As all of the above is 3.3V logic, I then tried it with a ublox neo6m board. This works ok as well. However, even on an external antenna I kept getting randomly off by 1 on the frequency counter, which would then catch up on the next reading. I take it that if the pps signal is off by more than 100ns that this would cause this behaviour, or is it maybe my code? As it is not a timing receiver is this to be expected? In the end I had the OCXO trained via the 10bit DAC on the pinguino to the point where my old hp 5328A would show 10,000,000.0 or .1 or 9,999,999.9. I also tried to replicate something I saw on here with the PPS and 1MHz (divided down by a 74hc390) being passed through a 4046, and then into an adc on the pinguino. The idea was to use the frequency counter to get in the ballpark and then use the 4046 to try to lock into the phase. But it all seemed very noisy. All I could really see was that if the ADC output was increasing that the OCXO was slow. I later worked out that I was dividing by 2 and then by 5 and so I did not have a 50/50 pulse. I have now fixed that. I also set the ublox neo6m to a 0.001 ms timing pulse. Then I accidently touched the PPS wire to ground and fried the PPS output. I though I had it powered off. Doh. It still works at outputting NMEA so it has found a home in my APRS setup in my car. These neo6m modules are very easy to use. I would love to have a play with a neo6t but where to get one - they all look expensive. Frustrated with this, I ran up a jupiter-t marked as TU60-D120 on the board from ebay which came on a psu/74144/rs232 converter board marked www.amoj.cn. However, on the board I could never get any serial output from it. I probed with my CRO and could see serial data on the tx pin, so have rigged up a TTL-rs232 board to my pc. Turned it on and get a ###Ea (or close to that anyway) output in putty. Some success! I then found the tac32 software via this list and have that working. OK, so now I know that it uses Motorola binary format, and that it has to be polled. Maybe that on-board serial port was working??? I checked the receiver ID message and it tells me that it is a TU60-D125 - which I can find no reference to when googling: @@Cj COPYRIGHT 1995-2004 NAVMAN LTD. SFTW P/N # SOFTWARE VER # 93 SOFTWARE REV # 07 SOFTWARE DATE 01/16/2004 MODEL #R01 HDWR P/N # TU60-D125 SERIAL # 307153696 MANUFACTUR DATE 301//42070 OPTIONS LIST5843 - @@Ha Timeout - not a 12-channel Rcvr @@Ea OK - must be an 8-channel Rcvr @@Bh Timeout - must be a non-DGPS Rcvr @@Aw Time Correction Mode UTC @@At Position Hold Mode DISABLED @@Ag Elevation limit set to 5 degrees @@Ea OK - must be an 8-channel Rcvr @@En - RAIM (8-ch) DISBLED, limit = 1000 nsec, 1PPS is ON always. Sawtooth = 00.00, One-Sigma Accuracy = 10 @@En OK - must have T-RAIM I put it via the tac32 sw into precision timing mode, and then started a self survey. After 24 hours it went into position hold mode. So, now I should have a better pps with which to work. When this completed I set the reference position from current. I then powered it off and then started it up again. I expected that it would go back to position hold mode based on the stored reference position? But it seemed to start, go to position hold for about a minute and then went back to 'navigating'? Am I going to have to tell it to do a self-survey each time it is powered on in order to get it to enter position hold mode 24 hours later? It seemed to remember the reference position ok. Or if I leave it long enough will it eventually switch to position hold mode? My plan with the jupiter-t is to use the 10KHz output to phase lock against the divided down 10MHz with a 4046 - I think it is described as the 'super simple' gpsdo. I consider this a 'back to basics' approach. I will use the pinguino for system monitoring - it has various 10bit ADCs and DACs etc, and to place the GPS into position hold mode. At least then I should end up with a 10MHz reference to start my time nut journey. If anyone else wants to have a go with a pinguino I am happy to elaborate more. It is not the most robust/best documented/easy to set up dev env platform but does seem to have
Re: [time-nuts] English To German Email Translation for free
Hi, On Mon, May 19, 2014 at 1:16 AM, Bob Burchett bob.burch...@eeontheweb.com wrote: I have a friend who speaks fluent German; send me an email of what you want to say BUT you should know that when I need any language of text I use this website: http://www.freetranslation.com/en/translate-english-german They do most any language but this one is for English to German. I can help translate from or to German, as I lived in Germany for a large portion of my life (and in recent times). If you want a good syntax checker, go to http://www.duden.de. Good luck! ___ 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] jupiter-t tu60-d120 (maybe d125), pinguino and GPSDO
+/-1 error in last digit of a frequency counter is known as bobble and is inherent when the counter's gate and measured frequency are asynchronous. Tim N3QE On Tue, May 20, 2014 at 10:36 AM, Brett Owen Rees bre...@gmail.com wrote: Hello, I have been experimenting with a 10Mhz OCXO and a number of GPS units and arduino/pinguino boards in order to build a gpsdo. The pinguino micro is interesting, with it being a 32bit microchip pic32mx440 chip with a USB interface to the computer. Based on arduino code I have seen on this list, I have an interrupt routine which runs on the pps pulse and which checks the value of a counter running from the 10Mhz ocxo (Morion MV89A), giving me a nice frequency counter. I initially had it hooked up to a trimble resolution t but the res t seems to have died (: I have to investigate it's death further ... it appears to work but never sees any SVs when hooked to my outside antenna, but worked on an inside antenna. I removed it from my ugly-style board. As all of the above is 3.3V logic, I then tried it with a ublox neo6m board. This works ok as well. However, even on an external antenna I kept getting randomly off by 1 on the frequency counter, which would then catch up on the next reading. I take it that if the pps signal is off by more than 100ns that this would cause this behaviour, or is it maybe my code? As it is not a timing receiver is this to be expected? In the end I had the OCXO trained via the 10bit DAC on the pinguino to the point where my old hp 5328A would show 10,000,000.0 or .1 or 9,999,999.9. I also tried to replicate something I saw on here with the PPS and 1MHz (divided down by a 74hc390) being passed through a 4046, and then into an adc on the pinguino. The idea was to use the frequency counter to get in the ballpark and then use the 4046 to try to lock into the phase. But it all seemed very noisy. All I could really see was that if the ADC output was increasing that the OCXO was slow. I later worked out that I was dividing by 2 and then by 5 and so I did not have a 50/50 pulse. I have now fixed that. I also set the ublox neo6m to a 0.001 ms timing pulse. Then I accidently touched the PPS wire to ground and fried the PPS output. I though I had it powered off. Doh. It still works at outputting NMEA so it has found a home in my APRS setup in my car. These neo6m modules are very easy to use. I would love to have a play with a neo6t but where to get one - they all look expensive. Frustrated with this, I ran up a jupiter-t marked as TU60-D120 on the board from ebay which came on a psu/74144/rs232 converter board marked www.amoj.cn. However, on the board I could never get any serial output from it. I probed with my CRO and could see serial data on the tx pin, so have rigged up a TTL-rs232 board to my pc. Turned it on and get a ###Ea (or close to that anyway) output in putty. Some success! I then found the tac32 software via this list and have that working. OK, so now I know that it uses Motorola binary format, and that it has to be polled. Maybe that on-board serial port was working??? I checked the receiver ID message and it tells me that it is a TU60-D125 - which I can find no reference to when googling: @@Cj COPYRIGHT 1995-2004 NAVMAN LTD. SFTW P/N # SOFTWARE VER # 93 SOFTWARE REV # 07 SOFTWARE DATE 01/16/2004 MODEL #R01 HDWR P/N # TU60-D125 SERIAL # 307153696 MANUFACTUR DATE 301//42070 OPTIONS LIST5843 - @@Ha Timeout - not a 12-channel Rcvr @@Ea OK - must be an 8-channel Rcvr @@Bh Timeout - must be a non-DGPS Rcvr @@Aw Time Correction Mode UTC @@At Position Hold Mode DISABLED @@Ag Elevation limit set to 5 degrees @@Ea OK - must be an 8-channel Rcvr @@En - RAIM (8-ch) DISBLED, limit = 1000 nsec, 1PPS is ON always. Sawtooth = 00.00, One-Sigma Accuracy = 10 @@En OK - must have T-RAIM I put it via the tac32 sw into precision timing mode, and then started a self survey. After 24 hours it went into position hold mode. So, now I should have a better pps with which to work. When this completed I set the reference position from current. I then powered it off and then started it up again. I expected that it would go back to position hold mode based on the stored reference position? But it seemed to start, go to position hold for about a minute and then went back to 'navigating'? Am I going to have to tell it to do a self-survey each time it is powered on in order to get it to enter position hold mode 24 hours later? It seemed to remember the reference position ok. Or if I leave it long enough will it eventually switch to position hold mode? My plan with the jupiter-t is to use the 10KHz output to phase lock against the divided down 10MHz with a 4046 - I think it is described as the 'super simple' gpsdo. I consider this a 'back to basics' approach. I will use the pinguino for system monitoring - it has various 10bit ADCs and DACs
Re: [time-nuts] jupiter-t tu60-d120 (maybe d125), pinguino and GPSDO
Then I accidently touched the PPS wire to ground and fried the PPS output. A short (duration) short (connection) to ground is unlikely to kill the output buffer. -- These are my opinions. I hate spam. ___ 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] jupiter-t tu60-d120 (maybe d125), pinguino and GPSDO
Hi Bret I did a design some years ago with the TU30/TU60/TU120 used as GPSDO for the OZ7IGY beacon project, I have a software packet and instructions to turn the Motorola output to NMEA I can email you. If you chose to go on with the TUxx GPSDO I can supply you with a PCB. OZ7IGY Project info: http://rudius.net/oz2m/ngnb/index.htm Regards Michael, OZ2ELA -Oprindelig meddelelse- Fra: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] På vegne af Brett Owen Rees Sendt: 20. maj 2014 16:36 Til: time-nuts@febo.com Emne: [time-nuts] jupiter-t tu60-d120 (maybe d125), pinguino and GPSDO Hello, I have been experimenting with a 10Mhz OCXO and a number of GPS units and arduino/pinguino boards in order to build a gpsdo. The pinguino micro is interesting, with it being a 32bit microchip pic32mx440 chip with a USB interface to the computer. Based on arduino code I have seen on this list, I have an interrupt routine which runs on the pps pulse and which checks the value of a counter running from the 10Mhz ocxo (Morion MV89A), giving me a nice frequency counter. I initially had it hooked up to a trimble resolution t but the res t seems to have died (: I have to investigate it's death further ... it appears to work but never sees any SVs when hooked to my outside antenna, but worked on an inside antenna. I removed it from my ugly-style board. As all of the above is 3.3V logic, I then tried it with a ublox neo6m board. This works ok as well. However, even on an external antenna I kept getting randomly off by 1 on the frequency counter, which would then catch up on the next reading. I take it that if the pps signal is off by more than 100ns that this would cause this behaviour, or is it maybe my code? As it is not a timing receiver is this to be expected? In the end I had the OCXO trained via the 10bit DAC on the pinguino to the point where my old hp 5328A would show 10,000,000.0 or .1 or 9,999,999.9. I also tried to replicate something I saw on here with the PPS and 1MHz (divided down by a 74hc390) being passed through a 4046, and then into an adc on the pinguino. The idea was to use the frequency counter to get in the ballpark and then use the 4046 to try to lock into the phase. But it all seemed very noisy. All I could really see was that if the ADC output was increasing that the OCXO was slow. I later worked out that I was dividing by 2 and then by 5 and so I did not have a 50/50 pulse. I have now fixed that. I also set the ublox neo6m to a 0.001 ms timing pulse. Then I accidently touched the PPS wire to ground and fried the PPS output. I though I had it powered off. Doh. It still works at outputting NMEA so it has found a home in my APRS setup in my car. These neo6m modules are very easy to use. I would love to have a play with a neo6t but where to get one - they all look expensive. Frustrated with this, I ran up a jupiter-t marked as TU60-D120 on the board from ebay which came on a psu/74144/rs232 converter board marked www.amoj.cn. However, on the board I could never get any serial output from it. I probed with my CRO and could see serial data on the tx pin, so have rigged up a TTL-rs232 board to my pc. Turned it on and get a ###Ea (or close to that anyway) output in putty. Some success! I then found the tac32 software via this list and have that working. OK, so now I know that it uses Motorola binary format, and that it has to be polled. Maybe that on-board serial port was working??? I checked the receiver ID message and it tells me that it is a TU60-D125 - which I can find no reference to when googling: @@Cj COPYRIGHT 1995-2004 NAVMAN LTD. SFTW P/N # SOFTWARE VER # 93 SOFTWARE REV # 07 SOFTWARE DATE 01/16/2004 MODEL #R01 HDWR P/N # TU60-D125 SERIAL # 307153696 MANUFACTUR DATE 301//42070 OPTIONS LIST5843 - @@Ha Timeout - not a 12-channel Rcvr @@Ea OK - must be an 8-channel Rcvr @@Bh Timeout - must be a non-DGPS Rcvr @@Aw Time Correction Mode UTC @@At Position Hold Mode DISABLED @@Ag Elevation limit set to 5 degrees @@Ea OK - must be an 8-channel Rcvr @@En - RAIM (8-ch) DISBLED, limit = 1000 nsec, 1PPS is ON always. Sawtooth = 00.00, One-Sigma Accuracy = 10 @@En OK - must have T-RAIM I put it via the tac32 sw into precision timing mode, and then started a self survey. After 24 hours it went into position hold mode. So, now I should have a better pps with which to work. When this completed I set the reference position from current. I then powered it off and then started it up again. I expected that it would go back to position hold mode based on the stored reference position? But it seemed to start, go to position hold for about a minute and then went back to 'navigating'? Am I going to have to tell it to do a self-survey each time it is powered on in order to get it to enter position hold mode 24 hours later? It seemed to remember the reference position ok. Or if I leave it long enough will it eventually switch to position hold mode?
[time-nuts] 2014 Million £ Longitude Prize
Hi: The UK in recognition of the 300th anniversity of the first Longitude Prize is now working on another one. http://www.longitudeprize.org/ A million pounds is about 16.8 million dollars. -- Have Fun, Brooke Clarke http://www.PRC68.com http://www.end2partygovernment.com/2012Issues.html ___ 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] 2014 Million £ Longitude Prize
Has the dollar really slid that far or did a decimal pound slide ?? 73, Dick, W1KSZ On 5/20/2014 1:00 PM, Brooke Clarke wrote: Hi: The UK in recognition of the 300th anniversity of the first Longitude Prize is now working on another one. http://www.longitudeprize.org/ A million pounds is about 16.8 million dollars. ___ 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] 2014 Million £ Longitude Prize
Decimal point Brooke, HI. 73 - Mike Mike B. Feher, EOZ Inc. 89 Arnold Blvd. Howell, NJ, 07731 732-886-5960 office 908-902-3831 cell -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Brooke Clarke Sent: Tuesday, May 20, 2014 4:01 PM To: Discussion of precise time and frequency measurement Subject: [time-nuts] 2014 Million £ Longitude Prize Hi: The UK in recognition of the 300th anniversity of the first Longitude Prize is now working on another one. http://www.longitudeprize.org/ A million pounds is about 16.8 million dollars. -- Have Fun, Brooke Clarke http://www.PRC68.com http://www.end2partygovernment.com/2012Issues.html ___ 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] 2014 Million £ Longitude Prize
Brooke Clarke wrote: A million pounds is about 16.8 million dollars. That doesn't seem right. The prize is 10 million British pounds, so your U.S. dollar equivalent is about right but not in the way you stated it. Andy ___ 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] 2014 Million £ Longitude Prize
Boy this is really off target I guess. But the first option on Dementia is actually pretty interesting. As I say way off topic. Regards Paul WB8TSL On Tue, May 20, 2014 at 4:07 PM, Andy ai.egrps...@gmail.com wrote: Brooke Clarke wrote: A million pounds is about 16.8 million dollars. That doesn't seem right. The prize is 10 million British pounds, so your U.S. dollar equivalent is about right but not in the way you stated it. Andy ___ 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] 2014 10 Million £ Longitude Prize
Hi: Sorry, it's old age. The US $ amount 16.8 million was correct, the mistake was in the Sterling amount which should have been 10 Million £. I've corrected the subject line. Have Fun, Brooke Clarke http://www.PRC68.com http://www.end2partygovernment.com/2012Issues.html Brooke Clarke wrote: Hi: The UK in recognition of the 300th anniversity of the first Longitude Prize is now working on another one. http://www.longitudeprize.org/ A million pounds is about 16.8 million dollars. ___ 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.
