JL Audio MCS-3800 - Manual (Page 48)

48
M Buttons
There are two completely different purposes for the M Buttons.
(1) Like other buttons, they can be assigned to send a
command when pressed.
(2) They can serve as instant Machine Enable-Disable buttons.
They control which machine will respond to Transport, Locate,
and Jog / Shuttle commands.
For example, in the initialized (Factory preset) state, M1
through M4 are programmed to represent MMC ID numbers 1
through 4.
Suppose M1 is lit, and the rest of the M buttons are not.
The next time Play is pressed, only MIDI machines with an
ID# of 1 will go into play.
Suppose M1 through M4 are lit. The next time Play is pressed,
MIDI machines with ID# 1 through 4 will go into play.
This concept doesn't just apply to Play, all the Transport,
Locate, and Jog / Shuttle controls will behave this way.
The M buttons are "targeting" which machines will respond.
It is as though the transport, locate, and jog / shuttle controls
"look at" which M buttons are lit, so they "know" which
machines to control.
The M buttons do not have to be used in this manner. As stated
at the top of this page, they can be assigned like any other
button, to simply send or not sent a MIDI command.
If the M buttons have not been set up to act as Machine Enable
buttons, then the Transport, Locate, and Jog / Shuttle
commands will be sent out to all machines, using MMC "ID All"
commands.
49
Transports
The Transports consist of Rewind, Fast Forward, Stop, Play,
and Record. The i.d. number that they transmit can be made to
be dependent upon the state of the M buttons. Refer to the
previous page.
The LEDs behave “exclusively”, that is, pressing Play turns on
the Play LED while turning off the Stop LED.
Record cannot be engaged unless Play is pressed and held
down first.
Jog Wheel and Shuttle Ring
Jog and Shuttle transmit MIDI Machine Control and MIDI
Controllers (CS-10 protocol), depending on the state of the M
buttons. When the optional 9 pin card is installed, Jog and
Shuttle can also send 9 Pin commands, for controlling
professional VTRs.
The Shuttle Ring features a center detent, and direction LEDs.
The Speed of the Jog Wheel and the Shuttle Ring can be user-
adjusted in the Utility Mode.
To enter Utility Mode, press Shift Assign. Turn the right-most
encoder, and go to the page where you see "Jog" and 'Shuttle".
The Jog Speed range is 1 through 100.
Shuttle Speed range is 1X through 32X.
That is, when the Shuttle Ring is rotated as far as its goes, the
machine will play up to 32 time Play Speed.
Any Transport or Function button can be made into a master
"On / Off" control for the Jog / Shuttle mechanism.