Tape flux measurement is useful for standardizing program levels on magnetic tape records, and for measuring the performance of tapes and recording and reproducing heads. A ring-core head is the most satisfactory tape-flux measuring instrument, but calibration of the flux-to-voltage sensitivity is difficult in the general practical case. By using a -symmetrical head- construction however, the sensitivity is easily calculated and experimentally verified. For practical measurements, a -high-efficiency head- has the advantage of not changing sensitivity with wear. The flux-efficiency of the core, and the frequency- and wavelength-response factors are all calculated and experimentally verified for both the -symmetrical- and -high-efficiency- designs. A flux measurement accuracy of better than 3% is achieved.
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is free for AES members and E-Library subscribers.