Answer: The Database Monitor portion of the Foxhound Basic edition will stop sampling the target database and display one of the following messages when one of its limitations of the Basic edition is exceeded:

   3:32:14 PM    1.8s   -- Foxhound Extended edition is required for more than 1 physical processor on the target server --
   3:32:12 PM    2.1s   -- Foxhound Extended edition is required for more than 1 physical processor on the target server at -- 

   2:11:52 PM   10.0s   -- Foxhound Extended edition is required for more than 100 target database connections --
   2:11:42 PM    6.5s   -- Foxhound Extended edition is required for more than 100 target database connections at -- 

   1:58:03 AM   12.5s   -- Foxhound Extended edition is required for use with SQL Anywhere Standard or Advanced edition --
   1:57:50 AM    2.4s   -- Foxhound Extended edition is required for use with SQL Anywhere Standard or Advanced edition at --

To continue sampling you must obtain an Extended edition registration key and enter it on the Foxhound About page.

See also...
What are the differences among the different editions of Foxhound: Beta, Evaluation, Basic and Extended?