[time-nuts] BC637PCI 1024 week rollover

2014-02-09 Thread GandalfG8
Oh well, full credit to Mr Trimble for getting it right, he does bake exceedingly nice GPS modules and the Ace3 doesn't have a rollover issue and it does report the date correctly. Unfortunately, as far as I can tell anyway, the BC637PCI takes the raw GPS time data from the Ace3 and perform

Re: [time-nuts] BC637PCI 1024 week rollover

2014-02-09 Thread Magnus Danielson
On 09/02/14 12:56, gandal...@aol.com wrote: Oh well, full credit to Mr Trimble for getting it right, he does bake exceedingly nice GPS modules and the Ace3 doesn't have a rollover issue and it does report the date correctly. Unfortunately, as far as I can tell anyway, the BC637PCI takes the raw

Re: [time-nuts] BC637PCI 1024 week rollover

2014-02-09 Thread d0ct0r
Hello, I'll be glad to check my GPS module to see what is going on there, however I am still waiting for the GPS antenna to be delivered. I tried to use some small form factor Trimple GPS antenna with BC637, but on-board GPS module couldn't lock with it. So, my BC637 is working in "freerun"

Re: [time-nuts] BC637PCI 1024 week rollover

2014-02-09 Thread GandalfG8
In a message dated 09/02/2014 15:31:47 GMT Standard Time, mag...@rubidium.dyndns.org writes: On 09/02/14 12:56, gandal...@aol.com wrote: > Oh well, full credit to Mr Trimble for getting it right, he does bake > exceedingly nice GPS modules and the Ace3 doesn't have a rollover issue and it >

Re: [time-nuts] BC637PCI 1024 week rollover

2014-02-09 Thread GandalfG8
It may be that your onboard batteries are in better health than mine are, although mine might have been disabled using the software, as I tried booting up without an antenna this evening and got the right year this time but twith he date as 1st January:-) What I found when running in GPS m

Re: [time-nuts] BC637PCI 1024 week rollover

2014-02-09 Thread d0ct0r
I found the document about Trimble ACE3 module: http://www.symres.com/files/ACE3.pdf Here is the paragraph about WNRO: Effect of GPS Week Number Roll-over (WNRO) The ACE III GPS module has been designed to handle WNRO, and there are no pro

Re: [time-nuts] BC637PCI 1024 week rollover

2014-02-09 Thread Magnus Danielson
On 09/02/14 22:05, gandal...@aol.com wrote: In a message dated 09/02/2014 15:31:47 GMT Standard Time, mag...@rubidium.dyndns.org writes: On 09/02/14 12:56, gandal...@aol.com wrote: Oh well, full credit to Mr Trimble for getting it right, he does bake exceedingly nice GPS modules and the Ace3

Re: [time-nuts] BC637PCI 1024 week rollover

2014-02-09 Thread Magnus Danielson
On 09/02/14 23:24, d0ct0r wrote: I found the document about Trimble ACE3 module: http://www.symres.com/files/ACE3.pdf Here is the paragraph about WNRO: Effect of GPS Week Number Roll-over (WNRO) The ACE III GPS module has been designed to

Re: [time-nuts] BC637PCI 1024 week rollover

2014-02-10 Thread GandalfG8
That's the document I was refering to when I said earlier that I'd seen written confirmation from Trimble that they weren't expecting any rollover problems with the Ace3, I didn't mention the "through the year 2015" comment as we haven't actually got there yet:-) That may indeed be an issue

Re: [time-nuts] BC637PCI 1024 week rollover

2014-02-10 Thread GandalfG8
Ah, I took 1999 as I thought that was the only relevant date for another 1024 weeks, I'm not familiar with the shifted 1024 week period so will take a look at that. Does "shifted" imply a shift at the whim of the manufacturer, ie could it explain why these boards might have been ok a few ye

Re: [time-nuts] BC637PCI 1024 week rollover

2014-02-10 Thread Magnus Danielson
On 10/02/14 11:15, gandal...@aol.com wrote: Ah, I took 1999 as I thought that was the only relevant date for another 1024 weeks, I'm not familiar with the shifted 1024 week period so will take a look at that. Does "shifted" imply a shift at the whim of the manufacturer, ie could it explain wh

Re: [time-nuts] BC637PCI 1024 week rollover

2014-02-10 Thread GandalfG8
In a message dated 10/02/2014 21:56:25 GMT Standard Time, mag...@rubidium.dyndns.org writes: On 10/02/14 11:15, gandal...@aol.com wrote: > Ah, I took 1999 as I thought that was the only relevant date for another > 1024 weeks, I'm not familiar with the shifted 1024 week period so will take a

Re: [time-nuts] BC637PCI 1024 week rollover

2014-02-11 Thread d0ct0r
I figured out why GPS FW information was not available by request. To do such requests BC637PCI needs to be in "GPS MODE". If I run the request in "Free Run", it return the error code. Here is FW infomation from my GPS module: GPS Packet Menu 1. Request Packet 41 - Gps Time Packet 2. Requ

Re: [time-nuts] BC637PCI 1024 week rollover

2014-02-11 Thread GandalfG8
Ah, sorry, when you commented before about modifying the demo software it obviously didn't register with me quite what you were trying to do. In the BC637PCI Demo software, I'm using version 7.0.0, under the "Help" menu, one item is Receiver Firmware Version and this returns the Packet 45 dat

Re: [time-nuts] BC637PCI 1024 week rollover

2014-02-11 Thread d0ct0r
Sorry for confusing information. I have some small Trimble antenna which currently connected to BC637PCI. However I never get it "locked" with that antenna: GPS PACKET 46 - GPS HEALTH PACKET Status: No usable satellites Error: 63 Binary Time: 02/11/2014 17:28:40.0572284 Status: 7 Binary T

Re: [time-nuts] BC637PCI 1024 week rollover

2014-02-11 Thread GandalfG8
Ah, now I understand:-) All I'm using at the moment though is a small Trimble patch mounted indoors and although it does drop out occasionally most of the time it's ok, have you checked your satellite signal levels as reported by the BC637 software? Although my own interest is really only i

Re: [time-nuts] BC637PCI 1024 week rollover

2014-02-11 Thread d0ct0r
You are right ! Now I am going to modify the code a lit bit. Each time as we call bcReadBinTimeEx or bcReadBinTime, we need to add "magic number" to unsigned long pointer which store major time. Example: if (bcReadBinTime(stfp_handle, &btm[1], &btm[0], &stat ) == 0) {

Re: [time-nuts] BC637PCI 1024 week rollover

2014-02-13 Thread GandalfG8
You've lost me, what code are you modifying at the moment, is it the actual Datum demo software? Regards Nigel GM8PZR In a message dated 12/02/2014 03:48:12 GMT Standard Time, t...@patoka.org writes: You are right ! Now I am going to modify the code a lit bit. Each time as we call

Re: [time-nuts] BC637PCI 1024 week rollover

2014-02-13 Thread d0ct0r
I modified two things for now. Its a "demo" software (Linux edition). And refclock_banncom driver for NTP. Personally, I would prefer to modify microcode or library. But that is proprietary with no source code around. Regards, V.P. On 2014-02-13 10:46, gandal...@aol.com wrote: You've lost