I have a TDS3000 scope and just connected it to the Ethernet. In the Ethernet setup menu there is a Test Connection selection. What does the Test Connection test?

I have a TDS3000 scope and just connected it to the Ethernet. In the Ethernet setup menu there is a Test Connection selection. What does the Test Connection test?

The Test Connection button pings the Gateway. If the Gateway IP Address is not specified, or specified incorrectly, the Test Connection will fail. This applies whether you are using a crossover cable or a "real" Ethernet connection. The selection is not required to communicate with the scope, it is strictly that the Test Connection button, which pings the gateway, will work.