In mixer console automation, the operational mode in which the system scans channel fader levels and perhaps other parameters, making continuous note of the engineer-specified initial conditions for each channel and all changes made by the engineer in real-time during a mixdown. The scanned data is continuously written to storage, either on one track of the multitrack tape itself or onto a hard disk. If stored to disk, the multitrack tape and disk must carry identical timecode timecodes for later reproduction of the mix by the system when operating in its read or update mode.