Before revision: The deck is then ready for replay or recording, although performing auto-calibration at the very start of magnetic tape is undesirable; and the operator should manually fast forward the tape to a random mid-reel point, perform calibration there and manually rewind back.
After revision: The deck is then ready for replay or recording, although performing auto-calibration at the very start of magnetic tape is undesirable; the operator should manually fast forward the tape to a random mid-reel point, perform calibration there and manually rewind back.