Tape Trail

RE: Tape Heads

173.21.180.55

In Reply to: RE: Tape Heads posted by eshields240 on October 28, 2009 at 14:38:08

Actually, the percentage of wear is determined by the depth of the remaining material at the head gap. This is *usually* determined optically. A secondary method to determine wear is to make precision inductance measurements, however; this is only valid when the original head inductance is known. Also, contrary to popular opinion, the high frequency response will actually INCREASE *just* before the head "gap" begins to widen. When the gap begins to increase, high frequency response will take a nosedive.

It isn't *that* much of a "guessing game", however I wonder how many people who state a percentage of head wear *actually* measure the depth of the gap. I would bet that MOST people just take an "educated guess (which is totally useless.)

Just some thoughts.

Bill

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