Spectracom SecureSync User Reference Manual page 181

Figure 3-5:
The figure above illustrates how SecureSync obtains the highest available and valid reference pri-
ority, depending on whether an external source is chosen as reference, or an internal ( User[x] , or
Local System ).
To configure the System Time, go to the System Time panel, which is located in the top-left corner
of the Time Management screen (see "System Time" on the previous page).
3.6.7.1 Timescales, Offsets and Leap Seconds
The System Time can be configured to operate in various timescales, such as UTC, GPS and TAI
(Temps Atomique International)
amounts, so the times are not all exactly the same.
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System time
NOTE – System time must be set in UTC timescale, not local time.
NOTE – In order for the time to be set manually by a user, and to qualify as a valid ref-
erence, the Input Reference Priority table on the Setup/Reference Priority screen
must include an "Enabled" "User[x]" Time and PPS reference.
See "Input Reference Priorities" on page 148 for more information.
. All of these times are offset from each other by varying
3.6 OTHER Setup Pages
165