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From: | John Shields |
Subject: | Re: [Discuss-gnuradio] Synchronisation |
Date: | Tue, 12 Sep 2017 20:13:31 +0000 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 |
Thanks Derek,
No, I hadn't been power cycling between the runs - good point, obviously, I should have. In terms of the 10 MHz and 1 pps references, in the configuration I was testing, I don't believe so in that I had the MIMO cable disconnected. My strategy was to have 2 USRPs with no MIMO - expecting little synchonisation. Then I was going to add the devices into the same container and connect the MIMO cable and expected things to improve and lastly, I was going to hand-code the SBX phase synch code. In terms of the version of UHD, the fg shows: <<< Welcome to GNU Radio Companion 3.7.11.1 >>> Thanks Marcus, I will implement your way of measuring the running phase offset and also thanks for correcting my understanding of O/B GPS . In terms of getting the devices in the container to be the best synch they can be, I presume for the device which has the GPS, for the clock source and time source, I would put O/B GPS for the device which has it and for the other, I would put MIMO cable for both but in terms of the 'Sync' field, where the options are PC Clock, Unknown PPS and Don't Sync, which option should I select? Thanks again for your help. Kind Regards, John On 11/09/17 09:00, Derek Kozel wrote:
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