Hi Ricardo, Generally what we refer to as the iADC is 1Gsps (or 2 interleaved): https://casper.berkeley.edu/wiki/ADC2x1000-8
Is this what you're using, or is it our national ADC at 3Gsps? https://casper.berkeley.edu/wiki/ADC1x3000-8 Have you tried loading the bof file in SVN without making any changes? https://casper.berkeley.edu/svn/trunk/ref_designs_tutorials/workshop_2010/roach_tut3_wideband_spec/r_spec_2048_r105_2010_Jul_26_1205.bof If you're using the National board, you'll need to switch out the ADC yellow block as well. Mark On Tue, Jun 21, 2011 at 2:14 PM, Ricardo Finger <[email protected]> wrote: > Hello All, > > I am trying to run the tutorial 3 spectrometer on a ROACH + 1x_3GSPS_iADC. > I used the bof file provided by casper as well as our own bof file compiled > here (on ubuntu) using the simulink model from casper after replacing the > pfb and fft blocks from our 'local' library. > > In both cases I got a strange symmetric spectrum ( > http://www.das.uchile.cl/~**rfinger/ROACH/tut3_1.png<http://www.das.uchile.cl/~rfinger/ROACH/tut3_1.png>) > which > doesn't change to much when a test tone is applied. > The iADC clock was 800MHz, 0dBm, provided by a valontech 5007 synthesizer, > and the test tone was 100/200 MHz, 0dBm. > > After a few integration periods I get a 'timeout' error, and a blank window > in the spectrometer.py application. > > Does anyone got the same problem? > > Thanks, > > Ricardo. > > -- > Ricardo Finger Camus > Electrical Engineer > Astronomy Department > University of Chile > Of: 56(2)9771119 > Casilla 36-D, Santiago. > http://www.das.uchile.cl/lab_**mwl/ <http://www.das.uchile.cl/lab_mwl/> > > >
