A PORTABLE TAPE RECORDER FOR MONITORING ABULATORY SUBJECTS
Date
1965-08
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
ORCID
Type
Degree Level
Masters
Abstract
This thesis describes the design and construction of a portable 4 channel magnetic tape recorder with an endless loop tape storage of 65 minutes. Although primarily designed for recording electrocardiograms the recorder is capable of recording signals with frequencies up to 200 cycles/second. The total recorder weight is 3.0 lbs plus batteries weighing .1 lbs per hour of recording. Although the recorder uses frequency modulation, delta modulation is discussed as an alternative to frequency modulation.
A system that has been built for transmitting electrocardiograms via telephone is also described.
Description
Keywords
Citation
Degree
Master of Science (M.Sc.)
Department
Electrical and Computer Engineering
Program
Electrical Engineering