See ConfiguringAtomRefclocksDev? for discussion of this topic.
6.1.1. Configuring ATOM (PPS) Refclocks
The ATOM refclock is built by default. Building is enabled/disabled by the option --enable-ATOM or --disable-ATOM in the 'configure' command line, for example: ./configure --enable-ATOM
The driver will look for the PPS signal on
/dev/ppsX, where
X is the unit number (0-4) on the
server 127.127.27.X line in your
ntp.conf file.
Note that some refclocks have builtin support for a PPS signal and do not currently use the ATOM driver. See
Bug #557 and
LoseThePerDriverPPSCode for more information.
Related Topics: AtomRefclockUsers