Alesis ALESIS M20 owner manual Front Panel Software Version, 13-6

Utility Menu, Chapter 13

13.20ERROR RATE (PAGE 20)

During playback or record, this screen shows the number of sync block errors per 14 drum revolutions (280 ms), from 0000 to 6720 (maximum number of errors possible). In any mode other than Play or Record, the display reads ----. Sync block errors are normally 100%

corrected by the ADAT’s error correction circuitry, but this display acts as a kind of early warning system. Errors of a properly functioning M20 and tape typically fall in the 0000- 0008 range. All errors are corrected unless the red ERROR indicator flashes in the main display between the Tape Counter and the Reference Counter; this typically happens when sync block errors are in the 25-100 range or above. Errors in the hundreds or thousands indicate severe problems with the tape or with the heads.

If the error rate increases significantly during the course of working with a tape, check performance with a benchmark or known good tape to see if the tape itself or dirty heads are at fault. If the tape is dropping out, clone the tape immediately to another M20. If the heads are dirty, get them cleaned by a knowledgable technician, or as a temporary fix use an approved dry cleaning tape only.

This screen is display-only. There are no adjustable parameters.

13.21FRONT PANEL SOFTWARE VERSION (PAGE 21)

This screen shows the current front panel software version. If you need to call Alesis tech support, make a note of this number before calling.

This screen is display-only. There are no adjustable parameters.

13.22SOFTWARE VERSION (PAGE 22)

Displays the version and date of the M20’s operating system software. If you need to call Alesis tech support, make a note of this data before calling.

This screen is display-only. There are no adjustable parameters.

13-6 ALESIS M20 REFERENCE MANUAL 1.06