Re: [casper] Problems with ADC captured data.

Hi Sharat, Did you do any of the other tests Dave suggested? Compiling/running at a lower clock speed? Checking for roach revision compatibility? Checking whether the failures after swapping zdoks / adc cards were always the same? I would suggest the debug messages like -- 2015-09-07

Re: [casper] Problems with ADC captured data.

Hi Sharat, To give some context: The adc5g has four cores, each of which has 8 parallel output lanes for the 8 bits of data. The software puts the adc in test mode, so that all cores output a sample of 0xff, followed by 7 samples of 0x00. The delays of the data lines relative to the clock are

Re: [casper] Problems with ADC captured data.

Hi, Sharat, On Sep 6, 2015, at 11:02 PM, Jack Hickish wrote: > As the code suggests, the error comes because bit 1 of core 3 appears to > never be glitch free, no matter what the delay setting. It's not obvious to > me what could cause this. Just to expand on what Jack said, here are a few

Re: [casper] Problems with ADC captured data.

Hi Jack, Thank you for the test scripts. When I run your script I get the following error. What could be the possible reason? I have not connected any input laft it floating as I have read that the ADC has its own ramp input which is used for the calibration. I have connected at 2500MHz clock.

Re: [casper] Problems with ADC captured data.

Hi Sharat, The disentangle(!) branch at https://github.com/jack-h/adc_tests/tree/disentangle has my calibration code. If you check out that branch and install it (cd adc5g; python setup.py install) then the test_cal.py script is a simple template for calibrating. If it doesn't work it should also

Re: [casper] Problems with ADC captured data.

Hi Rurik, Yes. I used the boffile ver2. I also generated bof using model file and tried using it. I checked both the ADCs using -z option. I get the same error. Thanks and regards, Sharat On 4 Sep 2015 18:37, "Primiani, Rurik" wrote: > Hi Sharat, > > Are you using

Re: [casper] Problems with ADC captured data.

Hi Sharat, Are you using the revision 1 or revision 2 version of the test suite bitcode and does this match the version of the board that you have? By default it uses revision 2 which is probably what you have but just to make sure. To use the other bitcode you would need to use the -b flag with

Re: [casper] Problems with ADC captured data.

Hi Sharat, How recent is your checkout of that library? What does git tell you is the most recent commit? Can you also send me a copy of your model and boffile -- i'll test that the calibration script works. Cheers, Jack On 3 September 2015 at 22:46, sharat varma wrote: > Hi

Re: [casper] Problems with ADC captured data.

Hi, Thanks for the reply and sorry for the delayed response. Yes, the x-axis represent the time and y-axis represents the signed 8 bit output. The negative bias is due to the nature of the input. I was trying to use the files in the link you mentioned, but I keep getting the error shown below. I

Re: [casper] Problems with ADC captured data.

Hi Sharat, Tomorrow (in California) I'll send you a link and instructions to use the calibration script I have, which should work ok at 2500mhz clock. In the meantime, it might not matter, but what version of mlib-devel are you using? Cheers, Jack On Thu, 3 Sep 2015 9:02 pm sharat varma

Re: [casper] Problems with ADC captured data.

Hi Jack, Thank you Jack. I am using the mlib-devel from https://github.com/sma-wideband/mlib_devel Also, I am using ISE 14.7. Regards, Sharat On 4 September 2015 at 12:34, Jack Hickish wrote: > Hi Sharat, > > Tomorrow (in California) I'll send you a link and

Re: [casper] Problems with ADC captured data.

Hi Jack, Thanks for the reply. I did not run mmcm calibration. Actually, we checked the ADC by feeding it a low frequency sine wave from a function generator and it works fine. The problem with spikes occurs when we feed the ADC with the photo-detector output. Regards, Sharat On 1 September

Re: [casper] Problems with ADC captured data.

Hi Sharat, Are you running the adc mmcm calibration routine after programming your roach? Cheers, Jack On 31 August 2015 at 22:41, sharat varma wrote: > > Hi Casper, > > I am working as a post-doc working under guidance of Dr. Hayden So at The > University of Hong Kong. > > We