Safran SecureSync 2400 User Manual page 230

3.3 Managing References
1. If necessary (see NOTE above), create a "User."
2. Move the reference which has "User 0" in the
3. For all other references, uncheck the
If the objective is to use a manually set time as a backup to other references
(such as GNSS or IRIG):
1. Move the "User/User" reference to a place in the table that has a priority
2. With "User/User" enabled, if no other higher priority references are enabled
Example 5—Time at power-up ("Local System Time") to be considered
"Valid". GNSS input to serve as 1PPS reference
The objective of this use case is to allow SecureSync to use itself as a valid ref-
erence. This is referred to as "Local System" time.
In order for this to happen, SecureSync requires an external Time, or 1PPS ref-
erence. In other words, "Local System" cannot be both Time, and 1PPS. This
makes "Local System" a legitimate, traceable reference.
Therefore the "Local System" does not have to be manually set ("validated") by
the User after SecureSync was power cycled (as would be the case with a "User-
/User" reference).
Since "Local System" cannot be both Time, and 1PPS input together, in this
example the GNSS input will be set as the 1PPS reference (other use cases may
require using different references, e.g. IRIG.)
214
the 1PPS column to the top of the table, with a
Enabled checkbox.
disabled.
lower than the references the "User/User" reference will be backing up.
Make sure the Enabled
or available (or if the higher priority references have since been lost), you
can now manually set the
(MANAGEMENT > OTHER: Time Management > System Time > Manual
Time Set). See "System Time" on page 188
SecureSync will go into synchronization using this set time once you click
the Submit button.
Note: You will need to repeat this procedure each time SecureSync is
power-cycled (with no other references available), unless you
enabled the feature Synchronize to Battery Backed Time on Startup.
Enabled
checkbox is selected.
System time to the desired value
for more information.
CHAPTER
3
Time column and "User 0" in
Priority value of 1. Click the
checkbox, so that they are all
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SecureSync 2400 User Manual Rev. 5.2