Hi James Yes, Im trying to clock the an ADC that will clock the FPGA.
Your info is really helpful. I have the same clock and pps signal. How does the gain work when pulling a spectrum out of the BRAMS? Thanks for your help Heystek On Thu, May 25, 2017 at 2:32 PM, Jason Manley <jman...@ska.ac.za> wrote: > I assume you're trying to clock an ADC, which will in turn clock the FPGA? > > Most CASPER ADCs and DACs need a 0dBm signal for the clock, but can > usually accommodate a few dB around that figure. > > See for example: > https://casper.berkeley.edu/wiki/ADC2x1000-8 > https://casper.berkeley.edu/wiki/ADC1x3000-8 > https://casper.berkeley.edu/wiki/KatADC > > Jason > > > On 25 May 2017, at 14:21, James Smith <jsm...@ska.ac.za> wrote: > > > Hello Heystek, > > > > Yes, a sin-wave (usually called CW or continuous wave signal) is the > ideal thing to do. I use 800 MHz on a ROACH1, though I understand that they > can go a bit higher. Other more experienced users might be able to comment > more. > > > > My particular setup is: valon synth inside the ROACH's box, 10 MHz > reference signal from the station's timing and frequency ref. > > The valon then generates an 800 MHz from that which I put into a > KatADC's "clk" port. > > The "sync" port is for a 1PPS signal. > > > > Regards, > > James > > > > > > On Thu, May 25, 2017 at 2:18 PM, Heystek Grobler < > heystekgrob...@gmail.com> wrote: > > Hi everyone > > > > Does anyone know what is the best clock signal for a ROACH1 and ROACH2 > board and will a sign wave do and at what level? > > > > Thanks for all the help > > > > Heystek > > > > -- > > You received this message because you are subscribed to the Google > Groups "casper@lists.berkeley.edu" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to casper+unsubscr...@lists.berkeley.edu. > > To post to this group, send email to casper@lists.berkeley.edu. > > > > > > -- > > You received this message because you are subscribed to the Google > Groups "casper@lists.berkeley.edu" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to casper+unsubscr...@lists.berkeley.edu. > > To post to this group, send email to casper@lists.berkeley.edu. > > -- You received this message because you are subscribed to the Google Groups "casper@lists.berkeley.edu" group. To unsubscribe from this group and stop receiving emails from it, send an email to casper+unsubscr...@lists.berkeley.edu. To post to this group, send email to casper@lists.berkeley.edu.
