This paper tabulates the results of initial tests conducted to determine the data reliability of three methods of record¬ing Bell Al digital data on magnetic tape: 1.) the Wollensak Recorder/Reproducer, 2.) an Ampex FR ll4B Transport with Ampex FM electronics end "anti-Jitter logic," end 3.) an Ampex FR ll4B Transport with Ampex FM electronics and Bell Al DDR/DDT as logic.nThe tests were designed only to find an approximate figure for error rate in that the following parameters were held constant: 1.) type tape, 2.) tape age, 3.) position of information across tape (channel effects), 4.) position of information along tape (reel effects), end 5.) word length.
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