Re: [time-nuts] Measuring frequency rather than tuning crystal

2015-03-01 Thread Dave Martindale
To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Thu, 26 Feb 2015 19:02 Subject: [time-nuts] Measuring frequency rather than tuning crystal I have a couple of HP 5370s with the beaglebone brain transplant. They come with a nice 10811 that has a little adjustment screw

Re: [time-nuts] Measuring frequency rather than tuning crystal

2015-02-27 Thread Paul Alfille
and frequency measurement time-nuts@febo.com Sent: Thu, 26 Feb 2015 19:02 Subject: [time-nuts] Measuring frequency rather than tuning crystal I have a couple of HP 5370s with the beaglebone brain transplant. They come with a nice 10811 that has a little adjustment screw. Testing against

Re: [time-nuts] Measuring frequency rather than tuning crystal

2015-02-27 Thread James via time-nuts
measurement time-nuts@febo.com Sent: Thu, 26 Feb 2015 19:02 Subject: [time-nuts] Measuring frequency rather than tuning crystal I have a couple of HP 5370s with the beaglebone brain transplant. They come with a nice 10811 that has a little adjustment screw. Testing against a Thunderbolt or KS

Re: [time-nuts] Measuring frequency rather than tuning crystal

2015-02-27 Thread Dave Martindale
, 26 Feb 2015 19:02 Subject: [time-nuts] Measuring frequency rather than tuning crystal I have a couple of HP 5370s with the beaglebone brain transplant. They come with a nice 10811 that has a little adjustment screw. Testing against a Thunderbolt or KS-24361 the 5370 is off by less than 1Hz. I

[time-nuts] Measuring frequency rather than tuning crystal

2015-02-26 Thread Paul Alfille
I have a couple of HP 5370s with the beaglebone brain transplant. They come with a nice 10811 that has a little adjustment screw. Testing against a Thunderbolt or KS-24361 the 5370 is off by less than 1Hz. I know the traditional method would be to adjust the crystal slowly and make careful

Re: [time-nuts] Measuring frequency rather than tuning crystal

2015-02-26 Thread Tom Van Baak
Paul, Right, there's no need to physically calibrate the LO when you can simply adjust all measurements in software, either inside the instrument or on the PC that's logging the measurements from the instrument. This technique is used for many high-end measurements and also extends to GPS