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        RFC 2783

        Title:      Pulse-Per-Second API for UNIX-like Operating
                    Systems, Version 1.0
        Author(s):  J. Mogul, D. Mills, J. Brittenson, J. Stone,
                    U. Windl 
        Status:     Informational
        Date:       March 2000
        Mailbox:    mogul@wrl.dec.com, mills@udel.edu,
                    Jan.Brittenson@Eng.Sun.COM,
                    jonathan@dsg.stanford.edu,
                    ulrich.windl@rz.uni-regensburg.de  
        Pages:      31 
        Characters: 61421
        Updates/Obsoletes/SeeAlso: None
        I-D Tag:    draft-mogul-pps-api-06.txt

        URL:        ftp://ftp.isi.edu/in-notes/rfc2783.txt


RFC 1589 describes a UNIX kernel implementation model for
high-precision time-keeping.  This model is meant for use in
conjunction with the Network Time Protocol (NTP, RFC 1305), or similar
time synchronization protocols.  One aspect of this model is an
accurate interface to the high-accuracy, one pulse-per-second (PPS)
output typically available from precise time sources (such as a GPS or
GOES receiver).  RFC 1589 did not define an API for managing the PPS
facility, leaving implementors without a portable means for using PPS
sources.  This document specifies such an API. 

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