This is the I/O Bus Interface Assembly used in the PF100 and PF200 Point Card Files and the Reserve Controller Memory File of the Multifunction Controller with UAC.

The daughter A/D converter board 82408213-001 is attached to IBI card 82407390-001 and used with the analog input card 4DP7APXIA322 in the PF200 I/O card file.

Test points and potentiometers are present on the card edge of the 82408213-001 daughter card A/D to be used during calibration and adjustment.