Software: Hearing Threshold test
All of the software for the Threshold test is in the form TyE_FrmThreshold.FRM.
The variables which are saved in the initialisation file are in the module TyE_ModIniFile.BAS
The Threshold test modifies the settings for volume and led's of the Attenuator Unit and inspects the button status with the variables declared in the file TyE_ModGlobals.BAS.
The code is fairly self explaining and at the moment of writing this I have no additional comments.