[ntp:questions] Doubt about Syncronization of GPS SPECTRACOM(2)

Marcos Onisto mlonisto at gmail.com
Wed Feb 28 20:04:36 UTC 2007


Hello All,

My doubt is about how can I consult my SPECTRACOM(2)? What the correct
way? I only can consult using the command ntpq or I can use de command
ntpdate with the serial port (127.127.4.2)? follow below:

# ntpdate -qd 127.127.4.2
28 Feb 17:04:10 ntpdate[1090]: ntpdate 3-5.93e Mon Sep 20 15:45:30 PDT 1999 (1)
transmit(127.127.4.2)
transmit(127.127.4.2)
transmit(127.127.4.2)
transmit(127.127.4.2)
transmit(127.127.4.2)
server 127.127.4.2, port 123
stratum 0, precision 0, leap 00, trust 000
refid [0.0.0.0], delay 0.00000, dispersion 64.00000
transmitted 4, in filter 4
reference time:    00000000.00000000  Thu, Feb  7 2036  3:28:16.000
originate timestamp: 00000000.00000000  Thu, Feb  7 2036  3:28:16.000
transmit timestamp:  c9905ebd.1ddcb000  Wed, Feb 28 2007 17:04:13.116
filter delay:  0.00000  0.00000  0.00000  0.00000
                   0.00000  0.00000  0.00000  0.00000
filter offset: 0.000000 0.000000 0.000000 0.000000
                   0.000000 0.000000 0.000000 0.000000
delay 0.00000, dispersion 64.00000
offset 0.000000

28 Feb 17:04:14 ntpdate[1090]: no server suitable for synchronization found

Tks a lot,

Marcos Luiz Onisto



On 2/28/07, Richard B. gilbert <rgilbert88 at comcast.net> wrote:
> Marcos Onisto wrote:
> > Hello All,
> >
> > I'd like to solve my doubt about my GPS (SPECTRACOM(2)). I have one
> > GPS that never work.
> > I dont know why, but my GPS is working now. Anyway my doubt is about
> > the syncronization.
> > Now it's syncronized as below, but i cant to consult the GPS. What is wrong?
> >
> > # /usr/local/bin/ntpdate -q localhost
> > Looking for host localhost and service ntp
> > host found : localhost
> > server ::1, stratum 0, offset 0.000000, delay 0.00000
> > 28 Feb 11:13:44 ntpdate[1074]: no server suitable for synchronization found
> >
> >
> > # /usr/local/bin/ntptrace localhost
> > localhost: stratum 1, offset -0.000110, root distance 0.000000, refid 'WWVB'
> >
> >
> > # /usr/local/bin/ntpq
> > ntpq> pe
> >      remote           refid      st t when poll reach   delay   offset  jitter
> > ==============================================================================
> > *SPECTRACOM(2)   .WWVB.           0 l   44   64  377    0.000   -0.095   0.019
> >
>
> That is not "GPS".   It's a VLF (Very Low Frequency) receiver tuned to
> 60 KHz.  WWVB is the VLF broadcast from the National Institute of
> Standards and Technology (NIST) located in Fort Collins, Colorado.
>
> GPS is a satellite based system.  It's an entirely different technology!
>
>
> > ntpq>
> > ntpq> as
> > ind assID status  conf reach auth condition  last_event cnt
> > ===========================================================
> >   1 27956  9624   yes   yes  none  sys.peer   reachable  2
> >
> > ntpq>
> > ntpq> as
> > ind assID status  conf reach auth condition  last_event cnt
> > ===========================================================
> >   1 27956  9624   yes   yes  none  sys.peer   reachable  2
> >
> > ntpq>
> > ntpq> rv 27956
> > status=9624 reach, conf, sel_sys.peer, 2 events, event_reach,
> > srcadr=SPECTRACOM(2), srcport=123, dstadr=127.0.0.1, dstport=123,
> > leap=00, stratum=0, precision=-13, rootdelay=0.000,
> > rootdispersion=1.000, refid=WWVB, reach=377, unreach=0, hmode=3,
> > pmode=4, hpoll=6, ppoll=6, flash=00 ok, keyid=0, ttl=0, offset=-0.095,
> > delay=0.000, dispersion=1.048, jitter=0.019,
> > reftime=c9900cc2.0046862e  Wed, Feb 28 2007 11:14:26.001,
> > org=c9900cc2.0046862e  Wed, Feb 28 2007 11:14:26.001,
> > rec=c9900cc3.a75eb068  Wed, Feb 28 2007 11:14:27.653,
> > xmt=c9900cf8.a78cb75d  Wed, Feb 28 2007 11:15:20.654,
> > filtdelay=     0.00    0.00    0.00    0.00    0.00    0.00    0.00    0.00,
> > filtoffset=   -0.09   -0.11   -0.11   -0.11   -0.09   -0.13   -0.12   -0.10,
> > filtdisp=      0.12    1.08    2.03    3.00    3.98    4.94    5.90    6.84
> >
> > ntpq>
> > ntpq> q
> > #
> >
> > If my hardware is syncronized with the SPECTRACOM(2), why i cant consult then?
> > Why i receive this message "no server suitable for synchronization found"?
> > Can someone helpe me?
> >
>
> In what way are you unable to "consult"?  Nothing you have posted above
> shows any problem other than not knowing what technology you are using.
>
> If an NTP client attempts to synchronize with your server it should have
> no difficulty in doing so if it's properly configured.
>
>
>
>
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