9 - Machine Control—Notes on individual devices
9–9
Faders) allow the PODs and
MASTER
layer faders
respectively to send MIDI Control Change messages
to MIDI devices connected to the TM-D4000.
9.4.6 JLC BB3
The J. L. Cooper BB3 transport controller can be
connected to the MIDI IN of the TM-D4000 and
used to duplicate the transport keys of the console
(i.e. pressing the keys of the BB3 will control the
external unit currently selected for transport control
in the Machine Control List). As well as MMC com-
mands, the BB3 also transmits MIDI Note On and
Note Off information for notes 21 through 25 on
channel 16 (fixed).
To avoid confusion, therefore, the TM-D4000 will
not map these notes on channel 16 to the transport
keys, unless the BB3 is added to the list of external
devices from the Supported Devices list.
9.4.7 MMC devices
There are two MMC control methods: the first being
a closed-loop (
MMC closed
) where the con-
trolled device is sending information back from itself
using the MIDI connections, providing an informa-
tion feedback cycle. Connections should be made
from the
MIDI OUT
of the TM-D4000 to the MIDI
IN of the controlled unit, and from the MIDI OUT
of the controlled unit to the
MIDI IN
of the TM-
D4000, allowing two-way communication.
The second is an open system (
MMC open
),
which is closer to a “command and forget” system.
No feedback is provided from the controlled device,
and the connection is a one-way connection; from the
MIDI OUT
of the TM-D4000 to the MIDI IN of the
controlled unit.
9.4.8 Cascade slave
This allows control of a slave cascade unit’s transport
keys from a master cascade unit. For details of this
facility, see 11, “Cascade”.
Any unit which is connected for transport control to a
cascade slave will then behave as if the slave’s own
transport keys have been pressed to control it.
