Date: Sun, 25 Aug 2019 15:14:37 +0900 (JST) From: Mori Hiroki <yamori813@yahoo.co.jp> To: "freebsd-mips@freebsd.org" <freebsd-mips@freebsd.org> Subject: Re: NTP ST1 server in my house Message-ID: <859018402.326185.1566713677884.JavaMail.yahoo@jws702102.mail.ssk.yahoo.co.jp> In-Reply-To: <41686588.6174961.1566301967064.JavaMail.yahoo@jws705108.mail.ssk.yahoo.co.jp> References: <41686588.6174961.1566301967064.JavaMail.yahoo.ref@jws705108.mail.ssk.yahoo.co.jp> <41686588.6174961.1566301967064.JavaMail.yahoo@jws705108.mail.ssk.yahoo.co.jp>
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Hi ST1 GPS jitter is always 15us. This cause of CPU clock 320MHz. Offset is under 10us. I think more good accuracy by pps manipulate by FPGA. Who is makeing this ? Hiroki Mori ----- Original Message ----- > From: Mori Hiroki <yamori813@yahoo.co.jp> > To: "freebsd-mips@freebsd.org" <freebsd-mips@freebsd.org> > Cc: > Date: 2019/8/20, Tue 20:52 > Subject: NTP ST1 server in my house > > Hi > > I have four NTP ST1 server in my house. > > All server use RT3050. > > Two is GPS and Two is radio signal JJY. > > GPS is u-blox and Taiyoyuden(chip is Mediatek). > > This is ST2 ntpq. > > remote refid st t when poll reach delay offset jitter > ============================================================================== > *10.0.1.22 .GPS. 1 u 637 1024 377 0.961 0.317 0.940 > +10.0.1.20 .GPS. 1 u 688 1024 377 1.013 0.348 0.956 > -10.0.1.19 .JJY. 1 u 709 1024 377 0.968 4.092 0.995 > +10.0.1.8 .JJY. 1 u 686 1024 377 0.969 0.233 0.716 > > GPS is gpiopps on mediatek gpio v1. > > http://dmesgd.nycbug.org/index.cgi?do=view&id=5092 > > > About over one year no trouble. > > Hiroki Mori > > _______________________________________________ > freebsd-mips@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-mips > To unsubscribe, send any mail to > "freebsd-mips-unsubscribe@freebsd.org" >home | help
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