Time Lag - ZyXEL Communications NSA-2401 User Manual

Chapter 5 System Setting Screen
Table 18 System Setting > Date/Time (continued)
LABEL
New Time (hh:mm:ss)
Get from Time Server
Time Server Address
Synchronize Now
Time Zone
Enable Daylight Saving
Start Date
End Date
Offset
Apply
Cancel

5.1.1 Time Lag

Time lag occurs when the time on the NSA falls behind the time on the time server. This may
happen if:
122
DESCRIPTION
This field displays the last updated time from the time server or the last
time configured manually.
When you set Date Time Setup to Manual, enter the new time in this field
and then click Apply.
Select this to have the NSA get the time and date from the time server you
select in the Time Server Address field.
Select a time server from the drop-down list box. Check with your ISP/
network administrator if you are unsure of this information.
Click this button for the NSA to retrieve the correct time from the
configured time server right away.
Choose the NSA's time zone.
Daylight saving is a period from late spring to early fall when many
countries set their clocks ahead of normal local time by one hour to gain
more daytime light in the evening.
Select this option if you use Daylight Saving Time.
Configure the day and time when Daylight Saving Time starts if you
selected Enable Daylight Saving. The hour field uses the 24 hour
format. Here are a couple of examples:
Daylight Saving Time starts in most parts of the United States on the
second Sunday of March. Each time zone in the United States starts
using Daylight Saving Time at 2 A.M. local time. So in the United States
you would use March, [Second Sunday], at 2:00.
Daylight Saving Time starts in the European Union on the last Sunday of
March. All of the time zones in the European Union start using Daylight
Saving Time at the same moment (1 A.M. GMT or UTC). So in the
European Union you would select March, [Last Sunday]. The time you
specify depends on your time zone. In Germany for instance, you would
enter 2 AM because Germany's time zone is one hour ahead of GMT or
UTC (GMT+1).
Configure the day and time when Daylight Saving Time ends if you
selected Enable Daylight Saving. The o'clock field uses the 24 hour
format. Here are a couple of examples:
Daylight Saving Time ends in the United States on the first Sunday of
November. Each time zone in the United States stops using Daylight
Saving Time at 2 A.M. local time. So in the United States you would select
November, First, Sunday, at 2:00.
Daylight Saving Time ends in the European Union on the last Sunday of
October. All of the time zones in the European Union stop using Daylight
Saving Time at the same moment (1 A.M. GMT or UTC). So in the
European Union you would select October, Last, Sunday. The time you
specify depends on your time zone. In Germany for instance, you would
type 2 because Germany's time zone is one hour ahead of GMT or UTC
(GMT+1).
Specify by how many hours to change the time for Daylight Saving Time.
Click this to save your changes.
Click this to discard changes.
NSA-2401 User's Guide