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Re: [Discuss-gnuradio] Synchronization issue with multiple USRPs
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From: |
Josh Blum |
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Subject: |
Re: [Discuss-gnuradio] Synchronization issue with multiple USRPs |
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Date: |
Wed, 25 May 2011 12:49:16 -0400 |
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User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110424 Lightning/1.0b2 Thunderbird/3.1.10 |
On 05/25/2011 12:01 PM, Marc Epard wrote:
> On May 25, 2011, at 9:14 AM, Josh Blum wrote:
>
>> 2) Calibrate the setup. After you tune, the daughterboard LOs will
>> have different constant phase offsets.
>
> In my experience (with a WBX in a USRP2 and a DBSRX2 in an N210), the
> phase offsets can change between bursts, not just when you retune. Is
> this not supposed to be the case?
>
The cordics reset when you start a new burst. So you need to time your
bursts. -josh