摘要 |
PURPOSE:To perform adjustment and inspection for the height of a magnetic head in a short time, by providing a reference track set at the center of a magnetic track and a height detecting track covering an end of the effective width of the magnetic head. CONSTITUTION:A reference pulse signal 15 and a detecting pulse signal 16 are recorded on an adjusting tape 7 at the area 0.45-0.5mm. above the lower end 17 and at the area 0.7-1.7mm. above the end 17 respectively and with a slight shift of timing given between both signals. This tape 7 is reproduced via a magnetic recording/reproducing head 8 and a reproducing amplifier 13 and then observed by an oscilloscope 14. Then the height of the head 8 is adjusted to 0.75mm. of a prescribed track width 18 by turning an adjusting nut 12 in order to secure the same output of response between the reference pulse of 0.05mm. and its following height detecting pulse 16. Thus it is possible to perform adjustment and inspection for the change of the height of the head 8 since the height of a head truck 9 can be continuously observed. |