SMPTE, Sync, and Offset, Chapter 11
11-8 ALESIS M20 REFERENCE MANUAL 1.06

11.7D USER BITS (PAGE 4, OR PAGE 3 IF THE PAGE 2 VALUE

IS TC TRACK)
This page allows entering 8 hex characters (0 - F) into the user bits of the SMPTE time code.
These bits are used to identify reels, projects etc. and may be displayed by an appropriate
SMPTE time code reader.
Operation You press… You see…
Select digit to edit Left/Right Arrow
buttons to scroll to
desired digit
Cursor under selected
digit
Change digit value Use Up/Down buttons
or enter digit from
keypad (the 1 key cycles
through 1-A-B-C, the 2
key cycles through 2-D-
E-F)
Your entry replaces
current digit
Exit User Bits setup Edit button or any other
Edit Group button Display leaves User Bits
function
11.8 TAPE OFFSET
This function is intended for offsetting individual M20s or ADATs from each other
within a multi-ADAT system only, not for setting an offset from an external SMPTE
time code master. For setting a SMPTE offset see section 11.6a.
This offsets (shifts in time) the master ADAT (ID1) compared to the slave ADATs, or
individual slaves compared to the master. The offset can be referenced to ABS time code or
between two locate points.
An offset-enabled slave is offset by the specified amount from the master machine. With
offset enabled on the master, it is offset by the specified amount from all slave units (i.e., all
slaves are offset by the negative amount compared to the master unit).
In Edit Tape Offset mode, the Up/Down buttons choose between (ABS) Time Code and
Location.
If Offset Mode = Time code, the reference counter displays the offset amount (up to ±24
hours) in hours, minutes, seconds, frames, and subframes. (To edit the Samples field, select
the Subframes field, then press the Cursor Right button.)