NOTE: Except for testing purposes, you should not choose a date other than the
current day.
Set Year Only: Some legacy time formats (e.g., IRIG) do not support years. Check
ing this box will open a data entry field to manually set the year. Spectracom
recommends not to utilize this feature, unless the IRIGformat 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 page155 and "The "User
/User" Reference" on page161.
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 HOMEscreen that User0 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 page160.
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
Startup, 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
146
CHAPTER 3 • SecureSync User Reference Guide Rev. 23
3.2 System Time
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