Heartbeat

You can use the Heartbeat property to specify whether the probe periodically checks that the connection to the target system is available and how often it performs that check. The probe shuts down if it detects that the connection to the target system is unavailable.

When the Heartbeat property has a value of 0 the probe does not check the availability of the connection. Any other positive value defines the number of seconds between each check of the connection's availability.