Canon 1130

If a person to be interrogated speaks a language which is not

known by the judge or the parties, a sworn interpreter designated

by the judge is to be employed; their statements, however, are to

be put into writing in the original language and a translation is

to be added; an interpreter is also to be employed, if a deaf or

mute person must be interrogated, unless the judge perhaps prefers that the person respond to questions in writing.