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- Newsgroups: comp.sys.sgi
- Path: sparky!uunet!cs.utexas.edu!sun-barr!ames!sgi!rhyolite!vjs
- From: vjs@rhyolite.wpd.sgi.com (Vernon Schryver)
- Subject: Re: Accurate Machine Clock?
- Message-ID: <pma85cs@rhyolite.wpd.sgi.com>
- Organization: Silicon Graphics, Inc. Mountain View, CA
- References: <BuDBqv.IHC@news.cso.uiuc.edu>
- Date: Thu, 10 Sep 1992 17:53:13 GMT
- Lines: 34
-
- In article <BuDBqv.IHC@news.cso.uiuc.edu>, dpape@mrcnext.cso.uiuc.edu (Daniel Pape) writes:
- > Isn't there a way to tell you r SGI to "call" an atomic clock somewhere
- > and set the internal clock accurately?
- >
- > I know about the timeslave function, and it has an option -C which supposedly
- > (according to the man page)
- >
- > " -C tty
- > specifies the filename of a tty port, such as /dev/ttyd2, with a
- > Precision Time Standards WWV receiver.
- > "
- >
- > But how the heck do you get PTS WWV receiver running?
- > (no man page...)
-
-
- You should get sufficient manuals with the WWV receiver. Precision
- Standard Time went out of business or for some other reason was
- purchased by another company, Traconex. The last contact information
- I've seen is from 1989:
-
- Robert Young
- 1140 N. Kramer Blvd.
- Unit G
- Aneheim, CA 92806
- (714) 632-9510
-
- If it's the same box, just wire it up to a tty port and turn it on.
- It might be good to reduce the tty latency/throughput adjustment
- in /usr/sysgen/master.d/{sduart,cdsio} for whichever port you use.
- For best accuracy, I'd use an sduart port.
-
-
- Vernon Schryver, vjs@sgi.com
-