Hi Andrey Sviyazov, I understand now. I have seen the code in UHDDevice.cpp as following: const double master_clk_rt = 13e6;
So I have made a mistake. jiangwy From: Andrey Sviyazov Date: 2013-07-24 12:44 To: wyjiang CC: umtrx Subject: Re: Re: How to syncronizing two UmTRXs Hi Jiang Wenyi. System clock of UmTRX is 26 MHz. And the same for synchronizing clock I/O. Thereafter system clock devided by 2 in each UnTRX to get 13 MHz interleaved I/Q sample clock. Best regards, Andrey Sviyazov. (Sent from mobile) 24.07.2013 4:42 пользователь "jiangwy" <[email protected]> написал: > > Andrey Sviyazov > > If I connect X7 between master and slave, then the clock of master is 13MHz > and the clock of slave is 26MHz. Is that right? > > Best regards, > Jiang Wenyi > > From: Andrey Sviyazov > Date: 2013-07-23 22:59 > To: wyjiang > CC: UmTRX > Subject: Re: How to syncronizing two UmTRXs > Hi Jiang Wenyi. > > To synchronize clock of several UmTRX you have to leave one of them in master > mode, > but all others must be switched to slave mode. > Master/slave control switch for 26MHz clock is S3(MHz). > I/O connector for 26 MHz clock is X7. > In case of master mode X7 becomes output and input in case of slave mode. > To set master mode turn switch S3 to the downward and to upward for the slave > mode. > Please find text on the PCB board to be sure. > > BTW, if you would like to use external clock source then all of UmTRX's must > be in slave mode, > i.e. their clock connectors must be inputs. > > Best regards, > Andrey Sviyazov. > > > 2013/7/23 jiangwy <[email protected]> >> >> Hi All, >> >> I have two UmTRXs v2. How to make the clock of them syncronized? >> >> ________________________________ >> Jiang Wenyi > >
