This course is for ATSS System Specialists (HDW) on the Common Digitizer -2B. Lecture contains subjects such as System Configurations, Block Diagram Analysis, IEEE-488 BUS Structure, External Input Measurements, Operating Procedures, System Analysis, Status and Alarm Indications, and Remote Control Interface Unit as it pertains to the various external control and maintenance monitoring equipment. Laboratory subjects include group sessions on Module Identification, Maintenance, Adjustments and Alignments. Use of the keyboard, display, trackball, and printer to isolate faults and change operating parameters are included. Troubleshooting, corrective maintenance, and scheduled maintenance procedures. Graded performance examination of a key parameter and proper TPR documentation are performed as an individual. For information about exams for this course, see the Special Instructions in FIST.