Input Selection and Routing, Chapter 6

6-4 ALESIS M20 REFERENCE MANUAL 1.06

6.4B DIGITAL INPUT ROUTING
The Digital Source setting (section 6.1) influences the digital input routing process. This
feature makes it possible to record incoming digital data on any track desired, without
manually repatching.
If digital source = ADAT Optical:
Any of the 8 incoming optical channels may be individually selected or de-selected with the
Track Input buttons while in Digital Routing mode.
• A lit track input light indicates that the incoming ADAT optical channel is a digital
source.
• If a track input light is dark, that means the incoming ADAT optical channel will be
skipped as a source.
• Pressing the All Input button selects all eight channels as optical sources (this is the
normal state).
• Pressing All Safe turns off all channels, which results in a one-to-one routing (just as
if all 8 channels were selected as sources). All Safe simply “clears the slate” for
additional digital source channel selections.
If digital source = I/O Card (AES/EBU):
Because AES/EBU is a 2-channel digital format, only channel pairs (1-2, 1-4, or 1-8) may be
selected or de-selected. Pressing the All Input button selects all channels. As in ADAT
Optical, a lit track input light indicates that the channel is a digital source.
If digital source = Track Copy:
Any of the 8 channels, to a maximum of 4 total, may be individually selected or de-selected.
A lit track input light indicates that the channel is a track copy source, i.e., the selected
channels are the internal source channels eligible for digital bouncing within a single M20.
Pressing the All Input button selects channels 1 through 4 as track copy sources.
• No more than 4 tracks may be copied within a single machine, so if 4 source tracks
are already selected, one must be de-selected before you can select another track.
• A digital source track cannot be record-enabled in Track Copy mode. If you try, the
message “Source cannot equal dest” will appear in the display.
• When copying tracks, any track delays (section 11.9) will be in effect.
• Pressing All Safe deselects any track copy source channels.