Alesis ALESIS M20 Word Length Selection, 1A PULL-UP and PULL-DOWN Sample Rate Selection

Chapter 4, Formatting Tape

4.1A PULL-UP AND PULL-DOWN SAMPLE RATE SELECTION

The Sample Rate button is also used to select the respective 0.1% pull-up and pull-down rates. A pull-up is available with a 30 fps SMPTE rate only. A pull-down is available with a 29.97 fps SMPTE rate only.

Use pull-up or pull-down after a standard tape format: It is not necessary to pre-select a pull-up or pull-down prior to formatting since the “pull” status is not recalled when tapes are subsequently reinserted. Use the pull-up/pull-down feature after formatting your tape. If you are formatting and recording simultaneously, using the pull-up/pull-down feature may be appropriate.

Operation	You press…	You see…
Select a Pull-up	…and hold	“+0.1%” displayed in the Sample Rate
sample rate	Sample Rate	block
	button then press
	Up button
Select a Pull-down	…and hold	“- 0.1%” displayed in the Sample Rate
sample rate	Sample Rate	block
	button then press
	Down button
Return to a normal	…and hold	Sample Rate block returns to normal
44.1/48 kHz sample	Sample Rate	sample rate display (44.1 or 48 kHz)
rate from a “pulled”	button then press
rate	the 0/Space
	button

Refer to section 16.4 for more information on pull-up and pull-down.

4.2WORD LENGTH SELECTION

Select 20 bits unless you want compatibility with older, Type I format ADAT tapes.

Operation	You press…	You see…
Initiate word length	Edit button, then	Display says “Format Data Type” and
selection	Format button	16 or 20 bits
Select word length	Up or Down	The desired word length (16 or 20)
	Arrow button so
	that the display
	shows…

ALESIS M20 REFERENCE MANUAL 1.06 4-3