On 4/10/07, Tarun Tiwari <[EMAIL PROTECTED]> wrote:
Hi Matt, Eric, and my dear friends,
I received third set of USRP for my research work, but the third USRP is not
able to lock/demodulate the desired frequency. When i transmit a signal on
2.4GHz from one of the old USRPs I need to lock the new USRP at 2.39989 GHz
else it does not demodulate the signal.
The 64MHz oscillator on the board has a maximum 50PPM error. This
gives an error of up to 3200Hz.
To get to 2.4GHz, that's 37.5x the 64MHz local oscillator.
3200Hz * 37.5 = 120kHz.
2.4e9 - 120e3 = 2.399880e9
So it is pretty possible that your oscillators are just that far off?
Brian
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