cmi CMI 7000 data sheet 198311xx free download

File name CMI_7000_data_sheet_198311xx.pdf

80 Megabyte 51/4"Winchester Disk Drive From Computer Memories CM 7000 features: Capacities of 60 and 80 megabytes unformatted. 40 millisecond average access time Closed loop servo positioner 15.74 megabytes formatted data per platter Proven Winchester technology Identical mounting to standard 5 l /4" floppy drives Interface compatible with readily available controllers Internal microprocessor Step-pulse buffering Head velocity profile control Optimized temperature compensation High output, high resolution heads All electronics and motors located outside clean area Parking zone Head locking mechanism CM-7000 disk drive product infor- CM 7000 m a t i o n . The Computer Memories Performance Specifications: CM-7000 series of Winchester disk drives offers exceptionally high storage capacities CM-7660 CM-7880 in a minifloppy size package. The CM-7000 series is offered in 60 and 80 Mbyte ver- sions, with an average access time of only 40 msec. The intelligent integration of Winchester technology with solid and proven design techniques assures the OEM the ultimate in quality and reliability, thus profitability. System integration is simplified because the CM-7000 series have the identical physical dimensions and mount- ing hole locations as a standard 5 lA inch floppy disk drive. DC voltage requirements are also the same as a mini-floppy drive, thus permitting the use of the same power supplies for both types of drives. Functional Specifications: The exceptionally high capacities, performance and features of the CM-7000 series are achieved through the use of a closed loop servo positioning system, on- board microprocessor, step-pulse buffering, head velocity profile control, narrower track width and gap length manganese zinc heads, parking zone, head locking mecha- nism and associated electronics as well as innovative mechanical design. Utilization Physical Specifications: of a swing-arm actuator used in concert with the appropriate electronics and head configuration achieves a track density of 1173 tpi and a bit density of 9275 BPI. INTERFACE Mechanical Dimensions: Reliability Specifications: 118310M Computer Memories reserves the right to change specifications without notice. Printed in U.S.A.