I need shorter intervals, can I change the parameters?
Absolutely! There is software that you will need to download and install on your computer first. Then you will be able to change or reset the values for Dispense interval, Auto Interval Increment, Bark Dispense Pause, Feeder Sleep Timer, and Remote Sleep Timer.
The details on this may be found in the Pet Tutor® manual, section title The Pet Tutor® Control Center Program For Computers [manual link].