That IS an electronic ballast, NOT magnetic. He is wondering if it has digital or analog controls.
Xenon short arc do use and need a ballast.
Xenon filled incandescent bulbs do not need a ballast.
Excuse me for my ignorance. Analog or digital controls of what? Of the voltage?
When someone calls a ballast Digital or Analog, it is the output controls which they are speaking about.
These circuits control the initial DC voltage to start the bulb and the AC voltage and current during the rest of the operation.