Looking for ntp/PPS setup guide

Garrett Wollman wollman at khavrinen.lcs.mit.edu
Sat Jul 31 18:25:24 PDT 2004


In article <20040731231908.18F485D08 at ptavv.es.net> you write:

>From what I have seen, the non-kernel PPS software handles jitter more
>gracefully than the kernel version.

Which CDMA receiver do you have?  I'm using one from EndRun
Technologies which emulates a Trimble Palisade and it seems to perform
fairly well:

     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
*GPS_PALISADE(0) .CDMA.           0 l    1   32  377    0.000   -0.016   0.008
+NAVOBS1.MIT.EDU .PSC.            1 u   37   64  377    0.836    0.027   0.025
xtime-b.nist.gov .ACTS.           1 u   49   64  377   15.477   -6.898   9.374
+ntp2.usno.navy. .USNO.           1 u   10   64  337   40.016   -2.378  83.946
-gps.freebsd.dk  .GPS.            1 u   51   64  377  115.848    4.315   1.408

This receiver was recommended to me by Dave Andersen (dga@).
(Actually, I stole it from him.)  This is using the host-triggered
timestamp mode of this device rather than PPS.

-GAWollman



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