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Deleting devices from the list, Auto-detection of devices, Selecting the control type for the devices – Teac DM-24 User Manual

Page 81: State, Device, Chase, State device id chase

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11 – Machine Control/Location—Selecting devices for control

TASCAM DM-24 Reference Manual

81

When an entry in the Machine Control List is high-
lighted (that is, the cursor is on the left of the screen),

the dial is used to scroll through the list, including
those items which may not be visible on the screen.

Deleting devices from the list

If a device is added in error to the Machine Control
List (or is no longer required), highlight the device,

move the cursor to the on-screen

DELETE

button, and

press

ENTER

. The last item in the list will be deleted.

This process can be repeated to clear the list.

Auto-detection of devices

In addition to the manual addition of controlled
devices, there are two auto-detect buttons. One is
used is used for detecting all devices attached to the
DM-24 (

LIST AUTO DETECT

) and the other is used for

transport mapping (see “Machine Control mapping
memories” on page 82
below).

Move the cursor to the on-screen

LIST AUTO DETECT

button and press

ENTER

to scan the control ports and

report on the detected devices, adding the controllers
to the Machine Control list (see “Machine Control
mapping memories” on page 82.

NOTE

Because not every device that may be controlled by the
DM-24 is capable of reporting its presence accurately,
some devices will not appear on the list, and must be
added to the list manually.

When attempting to identify a MIDI device, the DM-
24 first sends out an MMC Read Signature com-
mand. It adds a generic “closed loop” device for
every device ID that responds to this command.

It also sends out a MIDI Device Inquiry Message. If
a remote device replies to this message, and an
appropriate controller is available, this controller
replaces the generic MMC closed-loop controller.

After power has been applied, it may take between
one and two minutes for the remote devices to be rec-
ognized. Even if they have been added to the memo-
rized Machine Control list previously, it may not be
possible to control them immediately the system is
powered up.

Selecting the control type for the devices

The Machine Control list is composed of a number of
columns. These are explained below:

STATE

An icon shows the state of the controlled

device. A one-way arrow represents an open-loop
device (that is, commands are sent from the DM-24
to the device, but no information is transmitted back
from the device to the DM-24 along the same chan-
nel—information is transmitted from the other device
through a different channel, such as timecode or
MIDI).

A double-ended arrow represents a closed loop,
where information flows both ways between the
remote device and the DM-24 along the same
channel.

A cross indicates that the device is not being con-
trolled by the DM-24.

Two dashes (

--

) show that the type of control is not

relevant here (for instance, the internal MIDI time-
code generator).

DEVICE

The name of the name of the device being

controlled, together with its control type. These list
items cannot be changed or edited.

ID

In the case of DTRS units, it refers to the unit ID,

and cannot be edited. In the case of MMC units, it
refers to the MMC ID (2 hexadecimal digits) of the
unit. This list item cannot be changed or edited. Use
the

JOG

dial to change the value and confirm with

ENTER

.

CHASE

This applies to DTRS units, and allows the

CHASE mode of the selected unit to be turned on or
off. Any unit which can have its chase mode con-
trolled by the DM-24 has this item represented by a
square box. Units whose CHASE mode cannot be
remotely controlled have this item represented by
two dashes (

--

). Use the cursor keys to navigate to the

list item, and the

ENTER

key to toggle between on (a

check mark is shown in the box) and off (the box is
empty).