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Scenarios

Time synchronization is to sync time for players.

Related Information

Users can choose NTP or RF time synchronization as required.

- - NTP time synchronization: Sync the time of players with the NTP server. No additional hardware is required, but the accuracy of time synchronization depends on the Internet speed and using the 4G network incurs mobile data usage.
  - RF time synchronization: Set the master device and slave devices. The time of slave devices is synced with the master (reference) device via an RF signal. The time of the master device can be synced with the NTP server as required. Users need to buy RF devices. RF time synchronization is suitable for the applications with a high requirement for time synchronization (such as synchronous playback) and does not use mobile data. But the signal reception depends on the environment and has distance limitations.

Step 1 Choose VNNOX_English > 5.2.5.5 Configuring Time Synchronization > image2018-11-22_17-55-53.png > Player Management > Time Synchronization.

Step 2 (Optional) Select the NTP server configuration tab and click Add to configure the NTP server information.

Figure 5-12 NTP server configuration

VNNOX_English > 5.2.5.5 Configuring Time Synchronization > 6-12.png

Figure 5-13 Creating a sever

VNNOX_English > 5.2.5.5 Configuring Time Synchronization > 6-13.png

Step 3 Select the Time Synchronization tab and click New.

Step 4 Enter a name and select a method for the time synchronization task, then click Next.

- - - - NTP: Select an NTP server and click OK. The Players tab page is displayed.

- - - - RF: Select a reference device for time synchronization and click OK. The Players tab page is displayed.

RF time synchronization is only available for asynchronous players.

VNNOX_English > 5.2.5.5 Configuring Time Synchronization > 6-13-2.png

Step 5 Click Add to add the players included in the time synchronization task.

For an RF time synchronization task, the reference device you specified is not in the player selection list.

Step 6 Click Save & Close.

Step 1 Choose > Player Management > Time Synchronization.

Step 2 On the Time Synchronization tab page, select a time synchronization task and click Attribute, or click the time synchronization task name.

The attributes of the time synchronization task are illustrated in Table 5-3.

Table 5-3 Time synchronization task attributes

Tab Name	Purpose	Description
Basic Info	Specify the name and description of the time synchronization task.	-
Workgroup	Specify the workgroup the time synchronization task belongs to.	The system administrator can view all the time synchronization tasks. Sub-users can view the time synchronization tasks only in the public workgroup, their workgroups and sub-workgroups, as well as the time synchronization tasks shared to their workgroups.
Configure	NTP time synchronization: Select an NTP server. RF time synchronization: Select a reference device for time synchronization. If the time of the reference device is synced with an NTP server, Set NTP to Yes and select an NTP server.	-
Players	Add or remove the players included in the time synchronization task.	For the detailed operating procedure, see Creating Time Synchronization Tasks.

Step 3 After attribute editing is done, click Save or Save & Close.

Step 4 On the NTP server configuration tab page, select an NTP server and click Attribute, or click the NTP server name.

The attributes of public servers (China, America) cannot be modified. The attributes of the added NTP server are illustrated in Table 5-4.

Table 5-4 NTP server attributes

Tab Name	Purpose	Description
Basic Info	Set the name and address of the NTP server.	-
Workgroup	Specify the workgroup the NTP server belongs to.	The system administrator can view all the NTP servers. Sub-users can view the NTP servers only in the public workgroup, their workgroups and sub-workgroups, as well as the NTP servers shared to their workgroups.

Step 5 After the attribute editing is done, click Save or Save & Close.