|A||Power plug and ON/OFF switch|
|B||±15V Power indicator LEDs for both OP5511current/ voltage probes included in the unit|
|C||Fusebox. Fuse reference is: fuse blade 3A 32V violet Cooper Bussmann # BK/ATC-3|
DB37F I/O connectors (see OP8662 Pin Assignments for details). Only the top connector, labelled Ch I0-7/E0-7, is used.