Dst And Utc, Gmt; Managing References; Input Reference Priorities - Spectracom SecureSync 1200 User Reference Manual

E x a m p l e
To create a Local Clock for a SecureSync installed in the Eastern Time Zone of the US, and desiring
the Local Clock to automatically adjust for DST (using the post 2006 DST rules for the US).
1. In the
2. Navigate to
3. From the
4. Select the
5. Select the
6. From the
7. Review the changes made and click the
The unit will display the status of the change.
3.2.4.3

DST and UTC, GMT

Neither UTC, nor GMT ever change to Daylight Savings Time (DST). However, some of the
countries that use GMT switch to a different time zone offset during their DST period. The
United Kingdom is not on GMT all year, but uses British Summer Time (BST), which is one hour
ahead of GMT, during the summer months.
Additional information about regional time zones and DST can be found on the following web
sites:
http://webexhibits.org/daylightsaving/b.html
3.3

Managing References

3.3.1

Input Reference Priorities

SecureSync can be synchronized to different time and frequency sources that are referred to as
Input References
References can be a GNSS receiver, or other sources such as NTP, PTP, IRIG, ASCII or
HAVE QUICK time codes delivered into your SecureSync unit via dedicated (mostly optional)
inputs. It is also possible to enter a system time manually, which SecureSync then can syn
chronize to.
Should you be installing new option cards, you will need to either manually set up the new
card in the
ority
CHAPTER •
3 SecureSync User Reference Guide Rev. 23
2 :
MANAGEMENT > Time Management: Local Clocks > (+): Local Clock
MANAGEMENT > Time Management: Local Clocks > (+): Local Clock
UTC Offset
pull-down menu, select "UTC -05:00".
Use DST Rules
checkbox.
Set DST Rules by Region
DST Region
drop-down list, select "US-Canada."
http://www.worldtimeserver.com/
, or just References
Reference Priority Table
Actions panel, in order to update the table with the new reference information.
checkbox.
Submit
button.
,
.
.
, or use the Restore Factory Defaults
3.3 Managing References
window:
.
option in the Reference Pri
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