[ntp:questions] HBG clock

Roman Mäder newsXXD.10.rmaeder at spamgourmet.com
Thu May 5 10:42:44 UTC 2005


The Swiss time service HBG is supposed to be compatible to the German DCF,
but there is one subtle difference. The first pulse of every minute is
actually between 2-4 short pulses (3 for the start of an hour, 4 for the
start of a new day, see
http://www.metas.ch/en/labors/official-time/hbg/code.html). The rawdcf
parse code apparently cannot deal with this. I constantly get (for server
127.127.8.0 mode 14):

May  5 12:31:31 denebola ntpd[13865]: [ID 702911 daemon.error] parse:
convert_rawdcf: INCOMPLETE DATA - time code only has 28 bits
May  5 12:31:59 denebola ntpd[13865]: [ID 702911 daemon.error] parse:
convert_rawdcf: INCOMPLETE DATA - time code only has 33 bits
May  5 12:32:31 denebola ntpd[13865]: [ID 702911 daemon.error] parse:
convert_rawdcf: INCOMPLETE DATA - time code only has 28 bits
May  5 12:32:59 denebola ntpd[13865]: [ID 702911 daemon.error] parse:
convert_rawdcf: INCOMPLETE DATA - time code only has 33 bits

The hardware is a variant of the Expert mouse clock tuned to 75 instead
77kHz. Its DCF coursin works fine, and signal reception is good.

Is it possible to hack the code in refclock_parse.c to disregard this
initial difference to the DCF standard?

Roman Maeder




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