[srslte-users] Timestamping subframes

[Remco Vink]

Dear all,

I have a setup with two ettus b200 devices both connected to the same antenna. Both b200 devices get there timing and clock inputs from a stable source.
In the code I am timestamping all the received subframes, both devices start at exactly the same time.
The first timestamps both devices log are identical, however after 1000 samples the difference in between the both devices is already 35,728646 ms.
How can these two devices who are receiving identical data over the gps have such a big time difference in 1000 samples already?
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