Up conversion on USRP2 questions

GNU Radio
1

Community,

I’ve read all the faq and a lot of code (some codes i couldn’t
understand, I learning c++ and verilog yet…) about USRP2, but I
also have doubts.
They are,

1 - Is the DUC fully implemented in FPGA?
2 - Is the “complex modulation function”[page 38, AD9777 datasheet]
used?
3- The function “set_tx_center_freq()” sets the carrier frequency as
tune() function does on usrp1, right?

Thanks for all,

Ronaldo A. Viera Nunez
Acadêmico/Engenharia Elétrica
Universidade Federal de Santa Maria

Santa Maria - RS - Brasil

2

Ronaldo N. wrote:

Community,

I’ve read all the faq and a lot of code (some codes i couldn’t
understand, I learning c++ and verilog yet…) about USRP2, but I
also have doubts.
They are,

1 - Is the DUC fully implemented in FPGA?

Yes.

2 - Is the “complex modulation function”[page 38, AD9777 datasheet] used?

You can enable it if you want it, but it is disabled in the firmware
right now.

3- The function “set_tx_center_freq()” sets the carrier frequency as
tune() function does on usrp1, right?

Yes.

Matt