In all cases, the defendant shall have the right to call character witnesses in the defendant's defense. Where the defendant chooses not to call character witnesses, the trial judge shall ascertain from the defendant whether this is a knowing, voluntary and intelligent waiver. A waiver colloquy, on the record, should be conducted by defense counsel, but may be supplemented by the Court and/or the Attorney for the Commonwealth. In a jury trial, the colloquy shall be held outside the presence of the jury before the defense rests its case.
Alle. Cnty. Pa. 602.2