Drop-outs in instrumentation magnetic-tape recording systems

A method of measuring drop-outs from magnetic-tape recording systems has been designed and built so that quantitative data can be quickly obtained from any tape on any machine and under any condition. Conclusions are made as to the relative effects of tape, machines, reels, recording processes, reproducing processes, environmental dirt, tensions, etc., on the drop-out count. It has been found that drop-out measurements can be used to evaluate tape and machines in regards to wear characteristics, to evaluate tape-cleaning methods, and to determine techniques in handling tape and operating tape machines to minimize drop-out effects both for analog and digital applications.