Synchronize Device Clock to Network
If the device is synced to the OpenWay Riva network, this window is available. Use this function to manually change the device's clock to match the network time. When you click Next, the system asks you to verify your choice. If you select Yes, the time is adjusted and the window displays the new device time.
Field label | Description |
|---|---|
Device Time | The current UTC time on the device's internal clock. |
System Time | The current UTC time on your computer. Note Manipulate the time on your computer to perform tests that involve a time span. |
Network Time | The current UTC time on the network. |
Network Status | The device's current relationship with the network. The field must display SYCnET in order for the Synchronize function to work. |
Delta Time | The difference between the time on the device's internal clock and your computer's time. |
If the device is not synced to the OpenWay Riva network, this page is not visible in the workflow menu structure. Instead, use the manual process provided. See Adjust Clock to System Time.
Automatic Adjustment
The device's time is corrected automatically based on network time synchronized by an NTP server. Internet Time Protocol (ITP) time is propagated throughout the network and each device is checked to confirm that it is within time drift thresholds.
The following parameters in the OWCM Collection Manager control this behavior.
- Time Drift Adjustment Threshold (seconds). The lower threshold when a device's time is corrected. For example, if this parameter is set to five seconds, a device whose time is less than five seconds off is ignored. Only when the time is wrong by five or more seconds is it corrected. This is to minimize processing load on the network.
- Time Drift Error Threshold (seconds). The upper threshold when a device's time is corrected. For example, if this parameter is set to 120 seconds, a device whose time is two or more minutes off is ignored. This is to allow time span testing to proceed.