# Trial Control Settings

Main topics and tasks

▪Introduction to Trial Control

▪The Start-Stop trial rule

▪Examples of Start-Stop trial rules

▪Programming Trial Control

▪Further information on Trial Control

important This chapter describes the Trial Control functions of the EthoVision XT Base version only. For a detailed overview of conditions, creating sub-rules and controlling hardware devices via the USB-IO box, see the EthoVision XT 19 - Trial and Hardware Control - Reference Manual. To access this manual, on the Apps screen choose Noldus > EthoVision XT 19 Other Documentation.