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

2013-04-23 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 external

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

2013-04-23 Thread Daniel Ginsburg
for the confusion. On Tue, Apr 23, 2013 at 7:49 AM, Daniel Ginsburg dginsb...@gmail.comwrote: 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

[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

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

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

2013-04-22 Thread Daniel Ginsburg
. On Tue, Apr 23, 2013 at 12:49 AM, Azelio Boriani azelio.bori...@screen.itwrote: Have you any reference? A TBolt, Z3801 or similar? On Mon, Apr 22, 2013 at 9:53 PM, Daniel Ginsburg dginsb...@gmail.comwrote: Hi all, I have bought a Resolution SMT GG for me to play with, and build