IpConfig/NTPServer Registry Key
NAME
IpConfig/NTPServer
DEFAULT
pool.ntp.org
DESCRIPTION
JNIOR can synchronize with a network time server supporting Network Time
Protocol (NTP). To utilize this capability JNIOR must be properly configured
for a network with access to an NTP server. The NTPServer key defines the
server using either a domain name or an IP address. An optional parameter
may be used to define an alternate port. The format is as follows:
IpConfig/NTPServer = ServerAddress [, ServerPort]
Another typical server address is 'time.nist.gov' and you may define a local
NTP server. The standard NTP port number is 123. You may optionally specify
a custom port number following the ServerAddress separated by a comma.
Only one server can be specified. If that server is not available then the
synchronization will be bypassed. Note that the clock is maintained by a
battery during periods without power. Synchronization is not required but
useful periodically as the clock will drift in accuracy over long periods.
Typical computer hardware clocks (PCs for instance) typically drift by
several seconds per day. NTP synchronization is critical in maintaining
accurate time.
NOTES
Time synchronization occurs during boot. Synchronization is attempted every
four hours by default to maintain clock alignment. JNIOR may also be
commanded to synchronize using the DATE -N command in the Command Console.
Proper network configuration including Gateway and DNS Server is required
unless a local NTP server is used.
The default 'pool.ntp.org' domain supplies an NTP server from a large pool of
servers. It is highly likely that a different server will be selected for
each synchronization. If the supplied server does not respond the
synchronization will be retried a few times. Beginning with JANOS v2.4 the
retry will occur 5 or so minutes later giving time for the DNS entry to
expire and thereby fetching a new NTP server that might be ready to assist
you.
SEE ALSO
HELP Topics:
DATE,
IPCONFIG
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