Re: [time-nuts] Trimble Resolution-T SMT caught behaving badly

2012-05-15 Thread David J Taylor
I am planning on making a simple NTP server using the Resolution SMT as the PPS input and a Rb oscillator (or any other 10MHz clock) to clock the CPU on the computer. If people are interested in a friendly interface board to the device let me know. My initial interface board design puts the

[time-nuts] Trimble Resolution-T SMT caught behaving badly

2012-05-15 Thread Mark Sims
Actually, the option to set the PPS width is grayed out and that message is not supported on the Resolution receivers. I have caught the receiver doing some more bad things. Twice, it lost lock for around 16 seconds, reported a bogus time/date (like 2024), and reported bad UTC

Re: [time-nuts] Trimble Resolution-T SMT caught behaving badly

2012-05-14 Thread Hal Murray
hol...@hotmail.com said: Then at the half way point, something strange happened... I've seen quite a few GPS receivers do strange things. My straw man is software bugs under poor signal conditions that don't get tested much. Another possibility would be a glitch on the power rail(s). It's

Re: [time-nuts] Trimble Resolution-T SMT caught behaving badly

2012-05-14 Thread Michael Tharp
On 05/14/2012 09:11 PM, Mark Sims wrote: Attached is a Lady Heather screen dump of a Trimble Resolution-SMT timing receiver behaving badly. The first quarter of the plot the unit was tracking all sats above 0 degrees/0 dBc. The next quarter the masks were set to 30 degrees/30 dBc. Then