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Re: [Discuss-gnuradio] UHD transmission timing control is quite tricky y
Re: [Discuss-gnuradio] UHD transmission timing control is quite tricky yet.
Wed, 19 Jan 2011 21:47:39 -0800
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The multi usrp wrapper has a method built in to synchronize a collection
of devices when the PPS edge event is unknown to the computer. You may
want to use the multi_usrp, and in any case, see the comments on
On 01/19/2011 09:29 PM, Sangho Oh wrote:
> I am trying to achieve two synchronized transmissions from two USRP2s.
> Both USRPs are connected to each host PC and feed with 5PPS clocks, without
> 10Mhz reference clock.
> But I cannot make it happen yet.
no common reference means clock drift
> However, the two transmissions are not synchronized well. There is a
> significant timing offset between the two transmissions, which
> is hundreds of milliseconds.
perhaps a multiple of 200 ms, which is the period of your pulses.