Hi Tom, What digitizer are these using? We have had issues with the KATADC on ROACH2, which turns out to need some register initializations in order to function properly, and the symptom is a bad est_brd_clk() result.
Regards, Dale On Wed, Apr 18, 2018 at 1:48 PM, Tom Kuiper <kui...@jpl.nasa.gov> wrote: > What situations could cause est_brd_clk() to give the wrong answer? > > I have two ROACH1s and a Valon 5007. Every time we check the Valon it > puts out the required clock frequency, 1020 MHz, at about +7 dBm. > > When I initialize the ROACHs (roach1, roach2) from an ipython command > line, est_brd_clk() in the __init__() routine finds the expected system > clock of 255 MHz. When the two ROACHs are initialized as part of a server > initialization, the first ROACH initialized passes the system clock test > and the second fails. I've reversed the order of initialization so it's not > a specific ROACH that passes or fails. Then at the end of the server > initialization, I check both system clocks and they are then both wrong. > Then, if I shut down the server and re-initialize the ROACHs, they both > have the right system clock. > > If no one has an explanation, perhaps there might be some suggestions for > what I should try next. > > Thanks and warm regards, > > Tom > > -- > 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.
