[ntp:questions] Tobit LAN!Time DCF77 receiver not working
Rob van der Putten
rob at sput.nl
Thu Dec 24 14:17:42 UTC 2009
Hi there
David Lord wrote:
> I saw it as CTS on brown and RI on Orange
Correct.
> All refclocks docs I've checked, by no means all, expect serial
> data on RxD.
Rewiring the plug might help;
Brown and Orange probably have opposite polarity;
+-+ +-+ + 12 V
| | | |
---+ +-------+ +--- - 12 V
---+ +-------+ +--- + 12 V
| | | |
+-+ +-+ - 12 V
> < 0.1 or 0.2 seconds
<--------> 1 or 2 seconds
So the thing to do is to connect the positive going pulse to RXD (2).
This will probably work with the following NTPD setting;
server 127.127.8.0 mode 5
fudge 127.127.8.0 time1 0.220 refid DCF77
After a few minutes 'ntpq -p' should yield something like;
remote refid st t when poll reach delay offset jitter
=====================================================================
+GENERIC(0) .DCF7. 0 l 61 64 377 0.000 0.151 0.002
Regards
Rob
--
Nowadays people know the price of everything, and the value of nothing
Oscar Wilde
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