Disk 4.3GB, 10k, WU, SE, SCA-80-AA/AB CMR21 chassis: includes processor, 16-Kbyte memory, 4 serial communications ports, maintenance mode firmware, base mode firmware, power supply, space for 16 PDP 11 modules, - 16 connector cards, and one A/D converter module. 120/240 Vac. Disk 4.3GB, 10k, WU, SE, SCA-80-BA/BB CMR21 AA hardware plus library of software utilities for - PDP 11 host systems. - CMR21-AC/AD CMR21 hardware plus 12 Vdc. CMR21-BC/BD CMR21 AC hardware plus library of software utilities for - PDP-11 host systems. The Disk 4.3GB, 10k, WU, SE, SCA-80 Analog Subsystem (A806) consists of the R-bus Interface board (Disk 4.3GB, 10k, WU, SE, SCA-80), also known as Intelligent I/O Controller (IIOC), one M9055 paddle- board that interfaces the IIOC with up to two Analog Conditioning Panels (Disk 4.3GB, 10k, WU, SE, SCA-80) using a 50 pin ribbon cable for each panel. One panel is used for in- - puts, the other is used for outputs. The Disk 4.3GB, 10k, WU, SE, SCA-80 allows the Disk 4.3GB, 10k, WU, SE, SCA-80 to read up to 15 analog inputs and perform ana- log outputs on up to 8 channels. A fully-loaded Disk 4.3GB, 10k, WU, SE, SCA-80 is able to read 240 analog inputs and write up to 128 analog outputs. The ACP consists of a circuit board that can be panel or rackmounted on a 19-inch chassis. The circuit board has screw terminals for up to 15 Disk 4.3GB, 10k, WU, SE, SCA-80 22 - blocks. These can be either up to 15 input blocks or 8 output blocks. You can- not mix input and output blocks on the same panel; a separate ACP is needed.