The ECal module automatically detects the connection between E5061B's test ports and ECal module's ports. You can turn off this function to set ports manually.
Press Channel Next (or Channel Prev) to select the channel of which you want to turn off the auto-detect function.
Press Cal > ECal > Orientation > Manual.
Specify a test port of the E5061B.
Specify an Ecal port for the port of the E5061B you specified.
If the auto-detect function is turned off, no error is displayed even if the connection is wrong.