Setting Up a System Time Configuration Job

Updated on 19 Dec 2023
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You can set the system date and time of a managed element using a configuration job.

To set up the System Time Job

Access the page Commission ▶ Jobs.
Set all common configuration job settings, as described in "Creating Configuration Jobs in GUI Mode" and in "Creating Configuration Jobs Using Data Sets".
Select System Time in the left pane. The System Time tab is displayed.
Complete all fields of the System time tab as required. For more information on specific parameters, see the table below.
Click Apply, then click Close.
Click the Refresh button to refresh the user interface.

System time tab (Commission ▶ Jobs)
General

Parameter	Description
Enable daylight saving time	Select to use daylight saving time (DST). Note: Services such as syslog that timestamp events with the current time and date are affected during DST transitions. As such, you may observe 60-minute gaps or duplicate timestamps around the time when the clock was changed.
TAI offset	The offset to add to UTC time to convert to Temps Atomique International (TAI)—atomic international time. In early 1972, TAI was exactly 10 seconds ahead of UTC. From 1972 until June 30, 2015, 26 leap seconds were added to the difference. Since the last second was added on December 31, 2016, TAI has been exactly 37 seconds ahead of UTC. It is important that the TAI offset value be consistent throughout your network in order to ensure valid measurements and avoid synchronization issues. This is particularly true if Accedian products are being used with equipment from other vendors that support leap seconds. If there is a TAI mismatch between units, the one-way delay measurements will show an offset of one second. In most cases, it is preferable to allow the unit to update its TAI offset value through a firmware upgrade (during a maintenance window to minimize impact) instead of manually changing the value here.
Clock name	On the Skylight sensor: control units, it is possible to set up Time of Day (ToD) clocks. Use this parameter to select a clock that is available on the unit being configured. It is possible to use a configuration job to set up a clock on a Skylight sensor: control. See "Setting Up a Clocks Configuration Job".

Parameter

Description

Enable daylight saving time

Select to use daylight saving time (DST).

Note: Services such as syslog that timestamp events with the current time and date are affected during DST transitions. As such, you may observe 60-minute gaps or duplicate timestamps around the time when the clock was changed.

TAI offset

The offset to add to UTC time to convert to Temps Atomique International (TAI)—atomic international time.

In early 1972, TAI was exactly 10 seconds ahead of UTC. From 1972 until June 30, 2015, 26 leap seconds were added to the difference. Since the last second was added on December 31, 2016, TAI has been exactly 37 seconds ahead of UTC.

It is important that the TAI offset value be consistent throughout your network in order to ensure valid measurements and avoid synchronization issues. This is particularly true if Accedian products are being used with equipment from other vendors that support leap seconds. If there is a TAI mismatch between units, the one-way delay measurements will show an offset of one second.

In most cases, it is preferable to allow the unit to update its TAI offset value through a firmware upgrade (during a maintenance window to minimize impact) instead of manually changing the value here.

Clock name

On the Skylight sensor: control units, it is possible to set up Time of Day (ToD) clocks. Use this parameter to select a clock that is available on the unit being configured.

It is possible to use a configuration job to set up a clock on a Skylight sensor: control. See "Setting Up a Clocks Configuration Job".

UTC Offset

Parameter	Description
Hours Minutes	The offset from Coordinated Universal Time to apply to the time zone: North America applies a negative offset. Eastern Europe applies a positive offset. Range: -12 to +14

Daylight saving time offset

Parameter	Description
Hours Minutes	The time adjustment to apply to the GMT offset during the daylight saving period. This value is typically one hour.

Daylight saving time configuration

Parameter	Description
Start, End Month Week Day Hours Minutes	The period during which daylight saving time is in effect. DST start and end times are defined using values for the month, week, day, hour and minute. Note: To specify the last day of the month, enter "week=5".

Parameter

Description

Start, End

Month

Week

Day

Hours

Minutes

The period during which daylight saving time is in effect.

DST start and end times are defined using values for the month, week, day, hour and minute.

Note: To specify the last day of the month, enter "week=5".

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