Figure 4: One example of a head block assembly. Azimuth optimizes high-frequency output by making sure the head’s gap is perpendicular to the tape’s travel.	Figure 5: Using the oscilloscope to “see” azimuth. 5a: Vertical input only, 5b: Horizontal input only, 5c: unequal levels, 5d: a “small” 30° error, 5e: a 90° error, 5f: a 180° error (out of phase), 5g: perfect azimuth (in-phase).

MORE TO COME!
If, after reading any of my articles, you walk away with more questions raised than answered, that is a good thing! No matter what the subject matter, it is hard to provide black-and-white answers for your exact set of circumstances. My goal is to familiarize readers with that most affordable troubleshooting tool—comparative analysis—as well as the most basic “scientific” technique of minimizing variables in order to maximize obvious problems. Surprisingly, I have helped many people via e-mail (edaudio@tangible-technology.com) without even knowing some of the gear in question. Good luck!

Eddie Ciletti is overdue to write an article about his day gig, digital tape machine repair. Visit him at www.tangible-technology.com.

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Reprinted with permission from Magazine, September, 2000
© 2000, Intertec Publishing, A Primedia Company All Rights Reserved