On 13/01/12 10:35 AM, Jorge Hernandez wrote: > Hi, > > I am working on a SISO link between two USRP2 based on OFDM. After > trying the different examples available I am stuck on a warning that > comes up over and over and I don't know how to solve it. I know it can > be a pretty simple question but I've already checked the mailing list > and I saw that the typical warning experimented by other people is due > to the fact that they have an error in the configuration of the sample > rate. It's my understanding that only integer divisor rates of the > master clock is possible. (100Mhz/decimation = sample rate). Well, I > think that my problem is not this one, because I am using a frequency > of 1M. This is happening only in the transmitter side, in the receiver > USRP2 I don't get any problem with the same sample rate configuration. > I don't know if it is a hardware problem or it is maybe a > compatibility problem. I'd really appreciate your help! Thank you in > advance. > > This is the message shown in the terminal: > > linux; GNU C++ version 4.4.1 [gcc-4_4-branch revision 150839]; > Boost_103900; UHD_003.003.000-283ff97 > > Payload length: 1500 > Time out: 0.8 > Burst length: 15 > Modulation: qpsk > Output sink: file > Trellis coding: False > Protocol type: selective_repeat > > -- Opening a USRP2/N-Series device... > -- Current recv frame size: 1472 bytes > -- Current send frame size: 1472 bytes > > UHD Warning: > The hardware does not support the requested RX sample rate: > Target sample rate: 1.000000 MSps > Actual sample rate: 0.000512 MSps > > Jorge Hernandez. > Hmm, that's very odd. Are you using custom FPGA/firmware on the USRP2, or the standard, as-shipped FPGA/firmware?
What happens if you do a: uhd_usrp_probe --args "addr=<address>" -- Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
