recommends not to utilize this feature, unless the IRIGformat you are using does
not provide a YEAR field.
Synchronize to Battery Backed Time on Startup: See "Using Battery Backed Time on
Startup" below.
4.
Click Submit at the precise moment desired.
5.
Navigate to MANAGEMENT > OTHER: Reference Priority.
6.
In order for the User time to be a considered a valid reference, verify that the Reference
Priority table includes an "Enabled" User [x] Time, and 1PPS reference ("User/User").
For more information, see "Input Reference Priorities" on page161 and "The "User-
/User" Reference" on page167.
7.
Move (drag & drop) the User time to the top of table, and disable all other references.
8.
Let Holdover expire. (Set it to a very short duration, if desired:
i.
Navigate to MANGAGEMENT > OTHER: Disciplining.
ii.
In the Status panel, click the GEAR icon.
iii.
In the Oscillator Settings window, set the Holdover Timeout.)
9.
Check on the HOMEscreen that User0 is displayed, with a green STATUS. Note that the
Disciplining State will remain yellow, once Holdover has expired, since the system time is
not synchronized to a reference.
Note: Contrary to the User reference discussed above, the Local System reference
can be used for Time, or 1PPS (but not both). For more information, see "The
"Local System" Reference" on page166.
3.2.1.4 Using Battery Backed Time on Startup
Upon system startup, by default SecureSync will not declare synchronization until one of the
external references becomes available and valid.
This functionality can be overridden by enabling the Synchronize to Battery Backed Time on Star-
tup, thus allowing the battery backed time to be used as System Time upon system startup. The
Battery Backed Time is also referred to as the time maintained by the integrated Real Time Clock
(RTC)
This will result in SecureSync providing a System Time before one of the external references
becomes available and valid. This will happen automatically, i.e. without user intervention. As
soon an external reference will become available, its time will take precedence over the battery
backed time: The System Clock will adjust the System Time for any time difference.
152
CHAPTER 3 • SecureSync User Reference Guide Rev. 26
3.2 System Time
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