Spectracom VelaSync 1225, Руководство пользователя

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of March and the “DST out” date is the first Sunday of November).
Australia .
Note: If a pre- configured rule DST rule happens to be
changed in the future (like the change to the US DST rule in
2006), this option allows the DST rules to be edited
without the need to perform a software upgrade for a new
DST rule to be defined. Select this drop-down and enter
the DST parameters for the new rule.
7. DST Start Date and DST End Date : This option is provided for locations that do
not follow any of the pre-configured DST rules. Click anywhere in either field to
open a calendar, allowing you to enter any custom day & time rule.
8.
Offset : In seconds. Use this field to manually define your local clock’s DST offset
e.g., 3600 seconds for a one hour offset.
9. DST Reference : When configuring a Local Clock that is synchronized to an input
reference (e.g., IRIG input), VelaSync needs to know the timescale of the input
time (Local Timescale, or UTC Timescale), in order to provide proper internal con-
version from one Timescale to another.
Select
Local or UTC , depending on the Timescale of the Input reference this
Local Clock is being used with.
Additional Local Clocks may need to be created if multiple input Timescales are
being submitted.
10. Click Submit . Your local clock will appear in the Local Clocks panel.
3.2.4.2 DST Examples
The following two examples illustrate the configuration of Daylight Savings Time (DST)
for a Local Clock:
E x a m p l e 1 :
To create a Local Clock to UTC+1 with no DST rule:
1. Navigate to
MANAGEMENT > Time Management: Local Clocks > (+): Local
Clock
.
2. In the
Local Clock Name
field, assign a meaningful name to the new Local Clock.
3. From the
UTC Offset
pull down menu, select “UTC +01:00”.
4. Confirm that the
Use DST Rules
checkbox is not selected.
3.2 System Time
CHAPTER
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