Using Battery Backed Time On Startup - Spectracom SecureSync 1200 User Reference Manual

3.2 System Time
4.
Click
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,
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:
9.
Check on the HOME screen that User 0 is displayed, with a
Disciplining State will remain
is not synchronized to a reference.
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
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.
Submit at the precise moment 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 .)
Note: Contrary to the User
can be used for Time, or 1PPS (but not both). For more information, see
"Local System" Reference" on
and
1PPS reference (" User/User ").
yellow , once Holdover has expired, since the system time
reference discussed above, the
page 160.
CHAPTER •
3 SecureSync User Reference Guide Rev. 23
green STATUS. Note that the
Local System reference
"The