3.
Click the Orphan Mode tab, and select an NTP Stratum other than 15. This will be the
Stratum level SecureSync will transition to in the event its input references become
invalid.
4.
Click Submit. SecureSync will automatically stop and re-start the NTP Service.
Note: Per NTP protocol definition, for an NTP Orphan Mode Timing Network to
operate properly, ALL servers and clients must be set to the same Stratum level
(e.g., "5").
2.14.14 Host Disciplining
Host Disciplining allows an NTP input reference to discipline SecureSync's oscillator. This may
be utilized e.g., with SecureSync units that do not have a GPS receiver because they are oper-
ated as Stratum2 servers.
In general, it is advisable to enable Host Disciplining only if needed, and to use it only in
robust networks/NTP environments.
Note that Host Disciplining is NOT supported by SecureSync units equipped with a Rubidium
oscillator.
ON: When Host Disciplining is ON, the NTP reference is used to discipline SecureSync's
oscillator, thus providing more stable oscillator performance.
About system software updates:
When updating to System Software Version 5.4.5, Host Disciplining will fall to its default
setting. When updating to future System Software versions, the last setting will be car-
ried over to the new software.
In any case, after a system software update it is advisable to verify that Host Disciplining
is still enabled.
OFF [default setting]: When OFF, NTP synchronization is not disciplining the oscillator,
only a time transfer is made in regular intervals to manually correct the system time.
2.14 Configuring NTP
CHAPTER 2 • SecureSync User Reference Guide Rev. 26
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