Rob, that's it - IRIG-B. Then I must look at the O/S / sound driver/codec. ALSA has replaced OSS which the driver was written to use. There is ALSA OSS emulation, which I am using. That is perhaps, the problem. I just have to find an older distribution that uses OSS and install it. Thanks for your Help!
--marki -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Rob Kimberley Sent: Friday, 9 August 2013 10:32 PM To: 'Discussion of precise time and frequency measurement' Subject: Re: [time-nuts] 9390-55108 IRIG <https://www.google.co.uk/search?q=IRIG+B&oe=utf-8&rls=org.mozilla:en-GB:off icial&client=firefox-a&channel=np&gws_rd=cr&um=1&ie=UTF-8&hl=en&tbm=isch&sou rce=og&sa=N&tab=wi&ei=-uAEUr7kILKo0AX1m4HYDg&biw=1440&bih=728&sei=_eAEUrLEMe e30QWUqIHQBQ#facrc=_&imgrc=Mk-NE6fEBiUfvM%3A%3BU8oGSPcxYQPCsM%3Bhttp%253A%25 2F%252Fwww.meinbergglobal.com%252Fimages%252Ftime-code-irig.gif%3Bhttp%253A% 252F%252Fwww.meinbergglobal.com%252Fenglish%252Finfo%252Firig.htm%3B2464%3B1 260> Rob -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Mark C. Stephens Sent: 09 August 2013 13:28 To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] 9390-55108 IRIG The refclock utilises AGC and winds the mixer input up to full volume. It is supposed to be a mic input so it would be over loaded. I think its AM as there is a carrier with peaks. Perhaps a picture from an oscilloscope would be a better way to describe it? Listening to it, I hear 1KHz and 50(100?)Hz hum? --marki -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Rob Kimberley Sent: Friday, 9 August 2013 10:03 PM To: 'Discussion of precise time and frequency measurement' Subject: Re: [time-nuts] 9390-55108 IRIG Mark, What is your ref clock driver 6 expecting to see? IRIG-B can be in a modulated or un-modulated form (Datum called this DC code) The DC code was usually TTL compatible PWM and the IRIG-B would be 3V pk-pk AM. Marker 8 cycles, "1" 5 cycles and "0" 2 cycles wide. Spaces 1V pk-pk. Rob -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Mark C. Stephens Sent: 09 August 2013 12:16 To: [email protected] Subject: [time-nuts] 9390-55108 IRIG I am trying to get a Datum 9390-55108 to work with NTPD using refclock driver 6. So far I have been unsuccessful. The output looks like IRIG-B (modulated 1Khz with 50% greater amplitude pulses) I can't get it to work with NTPD. Unless of course, my NTPD version is broken! Does anyone have information on these old type of 9390 that suggests the IRIG standard they output? --marki _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
