[ntp:questions] Meinberg DCF77 C51 with Linux 2.6

Rune Magnussen rum at gratismail.dk
Sun Feb 11 19:31:31 UTC 2007


Den Sun, 11 Feb 2007 16:01:38 +0100. skrev Uwe Klein:

> Rune Magnussen wrote:
>> Den Sun, 11 Feb 2007 14:59:59 +0100. skrev Uwe Klein:
>> 
>> 
>>>Status Leds?
>>>
>>>uwe
>> 
>> 
>> Netz is on, Feldstärke is on and rather strong. 
>> Modulation flashes wildly right now. This varies a lot so I will not mess
>> with the antenna right now. Freilauf is on since the modulation is bad.
> You will make no further progress until signal quality is good enough
> for one flash every second.
> 
> Try to switch of pieces of your equipment one at a time.
> 
> uwe
> 
>> 
>> At least ntpd sees status-changes. That did not happen with the other
>> cable.
> The way i understand the trace you  posted you get lots zero/"0x00" bytes.
> that could be either framing/parity errors or a break condition.
> 
> Does the meinberg clock blink in the proper way if you disconnect it
> form your PC? i.e. just plugged into AC and nothing else?
> 
> 
>> 
>> /Rune
> 
> uwe

Now the C51 is in sync Modulation seems ok and freilauf is off. The putput
from ntpd is like this:

pstatus:

assID=12763 status=80f5 unreach, conf, 15 events, event_peer_clock,
srcadr=GENERIC(0), srcport=123, dstadr=127.0.0.1, dstport=123, leap=11,
stratum=0, precision=-20, rootdelay=0.000, rootdispersion=0.000,
refid=DCFa, reach=000, unreach=0, hmode=3, pmode=4, hpoll=6, ppoll=7,
flash=1600 peer_stratum, peer_dist, peer_unfit, keyid=0, ttl=64,
offset=0.000, delay=0.000, dispersion=16000.000, jitter=0.001,
reftime=00000000.00000000  Thu, Feb  7 2036  7:28:16.000,
org=00000000.00000000  Thu, Feb  7 2036  7:28:16.000,
rec=00000000.00000000  Thu, Feb  7 2036  7:28:16.000,
xmt=c979ec84.a7e0c80b  Sun, Feb 11 2007 20:27:00.655,
filtdelay=     0.00    0.00    0.00    0.00    0.00    0.00    0.00    0.00,
filtoffset=    0.00    0.00    0.00    0.00    0.00    0.00    0.00    0.00,
filtdisp=   16000.0 16000.0 16000.0 16000.0 16000.0 16000.0 16000.0 16000.0


clockvars:

assID=0 status=0505 clk_baddate, last_clk_baddate,
device="Meinberg DCF77 C51 or compatible",
timecode="\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00
\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
poll=12, noreply=5, badformat=0, baddata=6, fudgetime1=10.000, stratum=0,
refid=DCFa, flags=0, refclock_time="<UNDEFINED>", refclock_status="",
refclock_format="Meinberg Standard", refclock_states="*ILLEGAL DATE:
00:12:00 (100.00%); running time: 00:12:00"

What do you mean by a "break condition" ?

/Rune




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