These errors probably mean you are running the 64 MHz version of the
OpenBTS transceiver, since it does not support these commands.
If you are running OpenBTS on a stock 64 MHz USRP clock, congratulations.
It often doesn't work at all, but sometimes you get lucky.
He's using a USRP2 with the UHD patch.
Since the USRP2 is always 100MHz sampling, I guess it uses a modified
version of the 64MHz TRX (because it needs resampling).
But the USRP2 can have it's 100MHz local clock locked on an external
reference to get it at really 100MHz and achieve good clock.
Cheers,
Sylvain
Hi,
> These errors probably mean you are running the 64 MHz version of the
> OpenBTS transceiver, since it does not support these commands.
> If you *are* running OpenBTS on a stock 64 MHz USRP clock, congratulations.
> It often doesn't work at all, but sometimes you get lucky.
He's using a USRP2 with the UHD patch.
Since the USRP2 is always 100MHz sampling, I guess it uses a modified
version of the 64MHz TRX (because it needs resampling).
But the USRP2 can have it's 100MHz local clock locked on an external
reference to get it at _really_ 100MHz and achieve good clock.
Cheers,
Sylvain
