Fostex B-16 - Page 44

4) The level ratio between the IKHz recording and the no-signal recording is the
erasure figure. In normal condition, erasure is higher than 70dB.
5) If response is less than the spec, increase erase current by about 10» according
to the procedure of Section 5.4.5. Monitor the erase current waveform on the
oscilloscope and set the core just before the waveform begins to deteriorate. A
higher current will heat the erase head and result in damage to the tape.
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