On Wed, September 6, 2006 5:22, Christopher Hoover said:
[ the story seems overblown to me, but still worth sharing. follow
the last link for some real data. - ch ]
The last link is interesting indeed. Seems that the problems are more
perceived than real, with the GPS constellation operating
On Thu, 7 Sep 2006 13:12:07 +0200 (CEST), Bart Smit [EMAIL PROTECTED]
wrote:
On Wed, September 6, 2006 5:22, Christopher Hoover said:
[ the story seems overblown to me, but still worth sharing. follow
the last link for some real data. - ch ]
The last link is interesting indeed. Seems that
Folks,
We have a rubidium oscillator in a laboratory here that is ripe for
calibration against a primary standard. We have installed a Datum 9390
GPS receiver next to it as well as an SR620 counter.
Can any of you recommend a good operating mode to make the SR620 reveal
the rubidium drift
John,
I would tend to believe the problem you are having is more receiver
related. If your entire satellite display is going red it means you are
losing all the SV's at once. While it's true that there are some pretty
big holes in the system right now, you shouldn't just lose everything at
once.
On Thu, 7 Sep 2006 11:20:14 -0700, Randy Warner
[EMAIL PROTECTED] wrote:
QA manager related that their Motorola cell phone line had been down for
several weeks about a year back because of the very same problem. Turned
out to be the same supplier too. Moto doesn't buy crystals from this
vendor
Hi David:
The most straight forward way is to make a time interval measurement
between the two 1 PPS signals.
It's good to use a BNC-T connector at the SR620 front panel and a scope
so that you can set the trigger levels at 50%.
If both sources are TTL (0 to 5 volts open circuit) and you use
David Forbes wrote:
Folks,
We have a rubidium oscillator in a laboratory here that is ripe for
calibration against a primary standard. We have installed a Datum 9390
GPS receiver next to it as well as an SR620 counter.
Can any of you recommend a good operating mode to make the SR620
