Hello Jim, I wouldn't give up on the Thunderbolt E yet. A double-ovenned 10 MHz sounds intriguing, you should have a very low phase noise which other GPSes (clocked by a cheap 'computer grade' oscill
Hi Wolf, According to https://www.u-blox.com/de/history, u-blox, the company which builds the module, is coming from Switzerland. So it's not really a chinese product. :-) Just the board is most prob
Hello Wolf, Tuesday, October 25, 2016 Thanks for the reply Wolf, I will try the divider idea first when I get a bit of play time, good idea. I will let you know how I get on, all the best! Best regar
Wolf, Thank you, I will capture per your suggestion some images (and rms measurements) of jitter between the Thunderbolt E and other GPSDOs at four or five time intervals in case this information is
Hi Stefan Thanks for part 2 Today I found the time to try to set SpecLab up and have immediately run into a problem. 1 pps fed into right channel and level suitably reduced, and onboard sound card se
Ran a quick trial here. With the Trimble 10uS directly into an E-MU 0202 at 192k/sec I get 100nS std dev of the raw intervals. The timing system here uses smoothed intervals which reduces the jitter
Hi Tony, There is a box/field named "Max deviation from initial sample rate". Currently there is a value of 20 ppm i guess. Just set it to 50, press Enter or Apply, wait until the field becomes green
