Thanks Marc for the reply.
I am not very familiar with the use of C++ API. Just wondering if there
is a good example to start with. All I want, is to take the time-stamped
samples from multiple usrps and dump them to file.
Marcus D. Leech wrote in post #993254:
On 04/16/2011 03:46 PM, Khalid J. wrote:
I am trying to develop an multi-channel RF synchronized system using
eight N210s with WBX. I distributed 10MHz reference to four systems
and other four are slaved using MIMO cable.
I have few questions:
- Though, channels are synchronized, still they have a fixed phase
offset between them. Is there a way to correct this? may be in DDC?
Since you’re dealing with 8 independent PLL synthesizers, there will be
a random phase offset among
all of them that will remain fixed during a given ‘session’. You
could perhaps correct this in
the FPGA, but not, I think, using any of the “standard” features of
the existing FPGA code.
- How can I obtain time-stamped samples in gnuradio-companion?
I don’t think that’s currently possible from within GRC. But if you use
the C++ API you can
arrange for that.
- How can I store multiple channels in a single file in GRC?
I’d use the streams-to-vector block within GRC.
- I am not using 1PPS reference at this time. Is it also important in
If you want time-stamp synchronization, you need 1PPS input to provide
synchronized starting point for timestamps.
Shirleys Bay Radio Astronomy Consortium