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Editing M20 Parameters, Chapter 3
3-4 ALESIS M20 REFERENCE MANUAL 1.06
3.2 THE EDIT BUTTON
The Edit button toggles the M20 in and out of Edit Mode. Enabling Edit mode (button lit)
allows editing parameter values for the functions grouped with the Edit button: Track Delay,
Tape Offset, SMPTE Chase, Internal Gen, Format, Pre-Roll, Post-Roll, Auto Return, and Auto
Record. While Edit is On, only the currently selected function’s switch will light. However,
the M20 retains the current on/off status of all switches, and these become visible after
exiting Edit mode.
Note: Don’t be confused! Editing a function does not turn it on. For example, while
editing the Post Roll value the Post Roll switch will be lit, but if the light goes out
when you leave Edit mode, Post Roll is not yet active.
If the Edit LED is not lit, pressing the various switches toggles these functions on and off.
Example: If you’ve used the Edit button to edit the amount of Tape Offset and the Edit button
is off, turning on the Tape Offset button enables the programmed amount of offset.
Pressing the Display, Pitch Value, or Utility button will also exit Edit mode and enter the
Display, Pitch, or Utility pages, respectively.
3.3 EDITING CONVENTIONS
• The rightmost 7-segment display shows locate times in hours, minutes, seconds, frames,
subframes and samples. Subframes equal 1/100th of a frame and range from 0…99. The
number of samples per subframe depends on the Tape Counter and Sample Rate settings.
If the tape counter is in ABS Time mode, there are always 15 samples per subframe in 48
kHz and 14 per subframe at 44.1 kHz. If the counter is in a SMPTE Time Code mode and
the sample rate is 48 kHz, Sample steps range from 0 - 15 for 30 frames/sec, 0 - 15 or 16 for
29.97 frames/sec, 0 - 18 for 25 frames/sec, and 0 - 19 for 24 frames/sec.
• A lit arrow above the subframe (SF) indicator indicates that there is a non-zero sample
value. To access the samples field, with the subframe field selected press the Right
Cursor button. This selects a second page that shows only the sample value.
• When editing any tape address, the cursor steps in fields (hours, minutes, seconds,
frames, subframes, and samples) instead of stepping every digit.
• When editing any tape address, entering digits with the keypad automatically advances
the cursor or selected field (using the Up/Down Arrows does not advance the field)
• When editing a field in the 7-segment display, the digit(s) of the selected (and currently
editable) field will flash.