This property provides the propagation delay for the Ethernet cable between this clock and its neighboring clock. Propagation delay is the time it takes for a single bit to travel along the wire (i.e. PHY to PHY). Propagation delay is a fundamental measurement that is required for time synchronization. The data type is DBL in seconds, which is typically used in LabVIEW for relative times. If nanoseconds are desired, multiply this value by 1,000,000,000. The propagation speed for copper wires is close to 2 * 10^8 meters/second. Therefore, multiplying this property value by 200,000,000 provides a close approximation of the cable length in meters. For example, 800 nanoseconds of propagation delay occurs with approximately 160 meters of copper cable.

Remarks

The following table lists the characteristics of this property.

Short Name Intf.Enet.Time.Port.PropDly
Data type cdbl.png
Permissions Read Only