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The '''Tektronix 4907 "File Manager"''' is a GPIB-compatible mass storage device for the [[4051]]/[[4052]] computer series (with File Manager ROM pack [[020-0279-00]]). | The '''Tektronix 4907 "File Manager"''' is a GPIB-compatible mass storage device for the [[4051]]/[[4052]] computer series (with File Manager ROM pack [[020-0279-00]]). | ||
The 4907 was available one, two or three 8" double density single-sided floppy drives that require hard-sectored diskettes and provide up to 630,000 byte capacity per disc. | The 4907 was available with one, two or three 8" double density single-sided floppy drives that require hard-sectored diskettes and provide up to 630,000 byte capacity per disc. | ||
It uses Shugart SA800/SA801 drives with line-voltage synchronous AC drive motors, meaning that a unit configured for 60 Hz line voltage requires ''changing the pulley and belt in the disc drives'' to run on 50 Hz, and vice versa. | It uses Shugart SA800/SA801 drives with line-voltage synchronous AC drive motors, meaning that a unit configured for 60 Hz line voltage requires ''changing the pulley and belt in the disc drives'' to run on 50 Hz, and vice versa. | ||