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Chapter 11, SMPTE, Sync and Offset
ALESIS M20 REFERENCE MANUAL 1.06 11-7
11.7B TIME CODE START REFERENCE (PAGE 2)
This page sets the internal generator’s starting reference. Use the Up/Down buttons to select
one of three options, or use the keypad numbers given below.
• With ABS Time (keypad 0), the internal generator’s start address is the current ABS
address plus any ABS offset (set on Page 3). The generator outputs time code based on
the M20’s absolute time track. Note: For time code to appear at the rear panel time code output,
the time code track must be input-enabled, the generator must be running, and a formatted tape
must be loaded.
• With TC Track (keypad 1), the current TC track time code becomes the internal
generator’s start address. The generator will continue generating the same format code
as on the time code track when the input is enabled and the generator is running. If no
code exists on tape, no time code will be output or recorded; the display temporarily
shows “TC Reference not present” if you try to turn Int Gen on.
• With User Set (any keypad number >1), the generator will output time code that is
synchronous to the absolute time, but starting at an arbitrary address as defined in the
next page. The time code will only be generated while the time code track is input-
enabled. The generator retains the address at which it was stopped, and continues when
re-started. In other words, whenever the generator is running with a User Set TC Start
reference, it updates the User Set Start number.
11.7C ABS/START OFFSET (PAGE 3)
This page shows “ABS” if Page 2 is set to ABS, and “START” if Page 2 is set to User Set.
If the Internal Generator is set to ABS, you can enter an offset for the time code output
compared to the ABS time.
If the Internal Generator is set to User Set, you can enter a new generator start time. The
display shows the current generator location when last stopped in User Set mode.
If the generator is running, this page will show the previous start value, but the cursor will
not be displayed as the start time cannot be edited while the generator is running.
Here’s how to edit the ABS/Start offset value:
Operation You press… You see…
Select field to edit Left/Right Arrow
buttons to scroll to
desired field
Cursor under selected
field
Change numeric field
value
Enter two-digit number
from keypad (leading
zeroes must be entered)
or use Up/Down buttons
Your entry replaces
current field value
Exit ABS/Start setup Edit button or any other
Edit Group button
Display leaves ABS/Start
function