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SerVision Embedded Video Gateway System Guide

Configuring System Settings 38

The default configuration includes a number of internet time servers to which the Video Gateway can connect in

order to check the time. The unit automatically attempts to connect to a time server at regular intervals. Each time it

attempts to connect, it begins with the first server listed. If it fails to connect to that server, it tries the next on the

list, and so on. If you wish, you can replace any or all of the time servers on the list with other time servers, or add

additional time servers, to a maximum of ten servers. The list can include time servers on the internet and on a local

network.

For the MVG and the CVG-M, you can choose to use GPS-based time synchronization if GPS is enabled for the

unit (see Configuring GPS, page 26). When you choose this option, the unit clock is constantly updated via GPS.



To enable automatic NTP-based time setting:

1. In the Date & Time Settings screen, if the GPS Time field appears, clear the Enabled checkbox.

Note: The GPS Time field only appears for the MVG and CVG-M, and only if GPS is enabled in the General

System Settings screen (see Configuring GPS, page 26).

2. Under Update Frequency, select the interval between time checks, in hours.

3. Click Update, and then save the settings. They will be implemented after the unit is restarted (see Saving

Configuration Changes, page 125).



To enable automatic GPS-based time setting:

1. In the Date & Time Settings screen, under GPS Time, select the Enabled checkbox.

2. Click Update, and then save the settings. They will be implemented after the unit is restarted (see Saving

Configuration Changes, page 125).



To disable all automatic time setting:

1. In the Date & Time Settings screen, if the GPS Time field appears, clear the Enabled checkbox.

2. Under Update Frequency, select Disabled.

3. Click Update, and then save the settings. They will be implemented after the unit is restarted (see Saving

Configuration Changes, page 125).



To specify other time servers when NTP-based time-setting is enabled:

1. In the Date & Time Settings screen, under Time Servers, add the IP addresses or hostnames of additional

time servers to the list, or replace existing IP addresses or hostnames with those of the time servers you want

to use, as required.

Note: Most time servers use port 123. If a time server you want to use uses a different port, you must specify

the port after the IP address or hostname. (Separate the address and the port with a colon (:). For example:

192.168.1.15:345)

2. Click Update, and then save the settings. They will be implemented after the unit is restarted (see Saving

Configuration Changes, page 125).

LAN Settings

The LAN settings define how the Video Gateway should connect to a cabled LAN – a local network to which it is

physically connected through an Ethernet network cable (connected to the Ethernet Out connector). These settings

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SerVision CVG-M Technical Information Seite 39