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.
