Accession Number:

AD0255698

Title:

TECHNIQUES FOR PULSE TESTING MAGNETIC FILM MEMORY ELEMENTS

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB

Personal Author(s):

• ANDERSSON,ALLAN H.
• CROWTHER,THOMAS S.

Report Date:

1960-01-29

Pagination or Media Count:

1.0

Abstract:

Equipment and procedures have been developed for testing the individual magnetic film elements of an integral array. Each element is tested for switching output amplitude, digit and transverse disturb sensitivity, and skew of the easy axis. The array of magnetic film elements is mechanically indexed under a single set of drive lines and sense coil, one element being tested at a time. The individual components of a testing station, manipulator, drive lines and sense coil, pulse generators, pattern generating logic, and sense amplifier are described. The pulse testing equipment was constructed for testing 16 x 16 arrays of 116-in.-diam. elements on 0.100-in. centers. It has also been used, successfully, for testing individual 0.010-in.-diam. elements on 0.100-in. centers. Author

Descriptors:

• *MEMORY DEVICES
• *DATA STORAGE SYSTEMS
• *MAGNETIC MATERIALS
• *MAGNETIC RECORDING SYSTEMS
• FERROMAGNETIC MATERIALS
• FILMS
• TEST METHODS

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE