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Chapter 4, Formatting Tape
ALESIS M20 REFERENCE MANUAL 1.06 4-3
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
sample rate
…and hold
Sample Rate
button then press
Up button
“+0.1%” displayed in the Sample Rate
block
Select a Pull-down
sample rate
…and hold
Sample Rate
button then press
Down button
“- 0.1%” displayed in the Sample Rate
block
Return to a normal
44.1/48 kHz sample
rate from a “pulled”
rate
…and hold
Sample Rate
button then press
the 0/Space
button
Sample Rate block returns to normal
sample rate display (44.1 or 48 kHz)
Refer to section 16.4 for more information on pull-up and pull-down.
4.2 WORD LENGTH SELECTION
Select 20 bits unless you want compatibility with older, Type I format ADAT tapes.
Operation You press… You see…
Initiate word length
selection
Edit button, then
Format button
Display says “Format Data Type” and
16 or 20 bits
Select word length Up or Down
Arrow button so
that the display
shows…
The desired word length (16 or 20)