Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-09-12 Thread Bob Camp
: Friday, August 23, 2013 1:25 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module? Hi Alan, I haven't seen this behaviour yet, but then I have RFTG shut off for a couple of months since. 7168

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-09-12 Thread Alan Kamrowski II
- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Guido Küppers Sent: Friday, August 23, 2013 1:25 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module? Hi Alan, I

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-09-12 Thread Alan Kamrowski II
, September 12, 2013 8:01 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module? Hi Be very careful of using the same sensor to control your loop and to determine how well the device is holding temperature

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-23 Thread Alan Kamrowski II
Hi Guido, Do you have any idea why the unit interprets the date 7168 (0x1c00) days into the future? If I send it today's date in the correct Motorola format, this is how many days it adds to it. If I change the date to try another, it does the same thing. Any idea why? I can correct for it

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-23 Thread Guido Küppers
Hi Alan,  I haven't seen this behaviour yet, but then I have RFTG shut off for a couple of months since. 7168 is dividible by 7 and the result is 1024. You know the gps week wraps over from 1023 (0x3ff) to 0. Perhaps what you see is the consequence of some software workaround of this problem,

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-23 Thread mc235960
It can't be a coincidence that it is exactly 7*rollover. Le 23 août 2013 à 17:57, Alan Kamrowski II a écrit : Hi Guido, Do you have any idea why the unit interprets the date 7168 (0x1c00) days into the future? If I send it today's date in the correct Motorola format, this is how many

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-23 Thread Alan Kamrowski II
PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module? Hi Alan, I haven't seen this behaviour yet, but then I have RFTG shut off for a couple of months since. 7168 is dividible by 7 and the result is 1024

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-23 Thread Bob Camp
- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Guido Küppers Sent: Friday, August 23, 2013 1:25 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module? Hi Alan, I

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-18 Thread Guido Kueppers
Am Samstag, den 17.08.2013, 23:05 -0500 schrieb Alan Kamrowski II: Alan, sent you the file by private mail. Note that serial data on this input of the RFTG has to be ttl-level. Have fun Guido Hi Guido, yes it worked. I'll have to look through my software projects and send you the source

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-17 Thread Guido Küppers
[mailto:time-nuts-boun...@febo.com] On Behalf Of Guido Küppers Sent: Friday, August 16, 2013 3:29 AM To: Rex; Discussion of precise time and frequency measurement Subject: Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module? Von Samsung Mobile gesendet Rex r...@sonic.net

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-17 Thread Alan Kamrowski II
Hi Guido, the one I used was a Oncore UT. The message needed for the RFTG is @@Ea.. So if I send the bytes: @@Ea.. it will accept the 1pps pulse? Any idea on the baud rate, 9600 N 8 1 ? Thanks for your help Alan ___ time-nuts mailing

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-17 Thread Alan Kamrowski II
Hi Guido, I found a manual here: http://www.elgps.com/public_ftp/Documentos/SIRF_Protocol.pdf I don't see the @@Ea.. sequence anywhere. Is it NMEA or SIRF Binary? Any more tips before I try this? Thanks, Alan ___ time-nuts mailing list --

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-17 Thread Guido Küppers
Hi Alan, sorry for my misleading comment. What I meant was the RFTG will need @@Ea messages coming from the UT. They contain the necessary gps data for the RFTG to accept the pps pulse. You initiate on the UT by sending it a @@Ea request. This has to be done for example  y a PC running the

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-17 Thread Alan Kamrowski II
Hi Guido, So you didn't fake the data from the UT, you only made something to ask the UT to output it. I see some UT units on eBay, but I don't recognize the antenna connectors. I've got a small screw on antenna (SMA?), but the ones on eBay look like that small round push on like I've seen

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-17 Thread Guido Küppers
Alan, wrong manual, the UT doesn't talk sirf as far as I remember. Although it can do NMEA this is not what want. Try to find a manual for the motorola Oncore receivers, the commands and messages I mentioned are specific to them. Have fun, Guido Von Samsung Mobile gesendet Alan Kamrowski II

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-17 Thread Bob Camp
Hi All the UT cards that I have ever seen use the small push on antenna connector. I have never seen one that directly takes anything normal like an SMA or a BNC. You buy the card and then a bit of coax with the push on on one end and (normally) an SMA on the other end. The antenna for the

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-17 Thread Guido Kueppers
Am Samstag, den 17.08.2013, 09:56 -0500 schrieb Alan Kamrowski II: Hi Guido, So you didn't fake the data from the UT, you only made something to ask the UT to output it. That´s exactly what I did, although I used the fake approach before that , when I didn't have a UT on hand. I see some

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-17 Thread Alan Kamrowski II
Hi Guido, That´s exactly what I did, although I used the fake approach before that , when I didn't have a UT on hand. Was that successful? If I could just output the same data stream to it once a second with the pulse from an AVR or something that would be great. Do you still have this

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-17 Thread Alan Kamrowski II
Hi Bob, All the UT cards that I have ever seen use the small push on antenna connector. I have never seen one that directly takes anything normal like an SMA or a BNC. You buy the card and then a bit of coax with the push on on one end and (normally) an SMA on the other end. The antenna for

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-17 Thread Bob Stewart
From: Alan Kamrowski II ala...@earthlink.net To: 'Discussion of precise time and frequency measurement' time-nuts@febo.com Sent: Saturday, August 17, 2013 1:37 PM Subject: Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module? Hi Guido, That´s

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-17 Thread Guido Küppers
Alan, yes it worked. I'll have to look through my software projects and send you the source file.  Have fun, Guido Von Samsung Mobile gesendet Alan Kamrowski II ala...@earthlink.net hat geschrieben: Hi Guido, That´s exactly what I did, although I used the fake approach before that , when I

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-17 Thread Bob Camp
HI On Aug 17, 2013, at 2:38 PM, Alan Kamrowski II ala...@earthlink.net wrote: Hi Bob, All the UT cards that I have ever seen use the small push on antenna connector. I have never seen one that directly takes anything normal like an SMA or a BNC. You buy the card and then a bit of coax

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-17 Thread Alan Kamrowski II
: Saturday, August 17, 2013 2:49 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module? Alan, yes it worked. I'll have to look through my software projects and send you the source file. Have fun, Guido Von

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-17 Thread Alan Kamrowski II
Hi Guido, yes it worked. I'll have to look through my software projects and send you the source file. Please do, so far my attempt is just failing. I'm trying to send: //transmit gps data txserial_putc('@'); txserial_putc('@'); checksum=0;

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-16 Thread Guido Küppers
Been there, done that.  The RFTGm-RB can be disciplined if you connect the pps and the gps data stream coming from a motorola Oncore.  Regards Guido Von Samsung Mobile gesendet Rex r...@sonic.net hat geschrieben: I don't think the rubidium module for these systems can be disciplined. I think

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-16 Thread Alan Kamrowski II
of precise time and frequency measurement Subject: Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module? Von Samsung Mobile gesendet Rex r...@sonic.net hat geschrieben: I don't think the rubidium module for these systems can be disciplined. I think they were only intended

[time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-15 Thread Alan Kamrowski II
Hi Everyone, I've only got the RFTGm-II-Rb module. I found an interface cable specification here: http://www.ko4bb.com/Manuals/05%29_GPS_Timing/RFTG-m/RFTGm%20Interface%20Cab le.pdf Does anyone know if feeding a 1pps signal to pin 9 might discipline it? Or does it need the other

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-15 Thread Rex
I don't think the rubidium module for these systems can be disciplined. I think they were only intended as a backup if the XO section or GPS failed. The XO section does discipline but I don't know the details. I'm not sure of the model number, Lucent had several variations on the same theme

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-15 Thread Alan Kamrowski II
Hi Rex, I don't think the rubidium module for these systems can be disciplined. I think they were only intended as a backup if the XO section or GPS failed. The XO section does discipline but I don't know the details. I was hoping since the rubidium module had a light for GPS and an input for

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-15 Thread Bob Camp
Hi So your Rb is 0.71 ppb off frequency. That's far enough that's it's worth adjusting. You should be able to get it 10X better than that without a lot of work. Bob On Aug 15, 2013, at 6:02 PM, Alan Kamrowski II ala...@earthlink.net wrote: Hi Rex, I don't think the rubidium module for

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-15 Thread Alan Kamrowski II
Hi Bob, Is it 0.71 ppb off or 0.071 ppb off? This is how I calculated it: 13939010/13939 = 1000.000717411579022885429371 answer/1000 = 1.00717411579022885429371 answer-1 = 7.1741157902288542937083004519693e-11 answer*1e9 = 0.071741157902288542937083004519693 Thanks, Alan

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-15 Thread Alan Kamrowski II
measurement Subject: Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module? Hi Must have blinked counting all the zeros .. Bob On Aug 15, 2013, at 6:36 PM, Alan Kamrowski II ala...@earthlink.net wrote: Hi Bob, Is it 0.71 ppb off or 0.071 ppb off? This is how I

Re: [time-nuts] RFTGm-II-Rb - can you gps discipline it without the XO module?

2013-08-15 Thread Bob Camp
Hi Must have blinked counting all the zeros …. Bob On Aug 15, 2013, at 6:36 PM, Alan Kamrowski II ala...@earthlink.net wrote: Hi Bob, Is it 0.71 ppb off or 0.071 ppb off? This is how I calculated it: 13939010/13939 = 1000.000717411579022885429371 answer/1000 =