Re: [time-nuts] Trimble Resolution SMT GG weirdness

2013-04-23 Thread Daniel Ginsburg
ile in fact you were talking about wander in sense of ... well ... wander. Sorry for the confusion. > > On Tue, Apr 23, 2013 at 7:49 AM, Daniel Ginsburg wrote: > >> >> On 23.04.2013, at 6:15, Hal Murray wrote: >> >>> >>>> I wonder, what kind of ti

Re: [time-nuts] Trimble Resolution SMT GG weirdness

2013-04-22 Thread Daniel Ginsburg
On 23.04.2013, at 6:15, Hal Murray wrote: > >> I wonder, what kind of timing GPS gives 112ns wander? > > How good is your antenna? 112 ns is roughly 112 feet. That's not at all > surprising if your antenna is inside or under trees. > Not perfect, but should be reasonably good. It's an ext

Re: [time-nuts] Trimble Resolution SMT GG weirdness

2013-04-22 Thread Daniel Ginsburg
e to what goes on in mine. > > On Tue, Apr 23, 2013 at 12:49 AM, Azelio Boriani > wrote: > >> Have you any reference? A TBolt, Z3801 or similar? >> >> >> On Mon, Apr 22, 2013 at 9:53 PM, Daniel Ginsburg wrote: >> >>> Hi all, >>> &

Re: [time-nuts] Trimble Resolution SMT GG weirdness

2013-04-22 Thread Daniel Ginsburg
On 23.04.2013, at 3:02, Jim Lux wrote: > > Assuming the software is reading some hardware counter when it gets the > pulse, there could be variable latency in the routine. 8000 ticks is a lot > of instructions though.. The hw timer latches the counter value to a separate register when the le

[time-nuts] Trimble Resolution SMT GG weirdness

2013-04-22 Thread Daniel Ginsburg
Hi all, I have bought a Resolution SMT GG for me to play with, and build a very simple breakout board. The receiver appears to be working (in a sense). That is, it powers up, it emits valid TSIP, it was able to survey it's position - a sane one. Trimble GPS Studio is able to recognize it, and