MOTU Digital Timepiece Betriebsanweisung PDF herunterladen (Seite 62)

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101

MIDI MACHINE CONTROL

Here is an example: let’s say that you have just

installed your Digital Timepiece and you have

powered it up for the ﬁrst time. Now it is time to

power up all of the devices connected to it. First,

you turn on your ADAT. It gets assigned soft ID 1.

Then you switch on your DA-88. It gets assigned

soft ID 2. Now, if you turn off the ADAT, its ID is

reserved. If you now turn on a third MMC device

with the ADAT still turned off, the third device will

be assigned soft ID 3, while ID 1 remains reserved

for the currently off-line ADAT.

Again, these ID assignment features are intended

to be automatic and of no concern to you as a user.

But it is good for you to know how soft ID

assignment is handled, in case a situation arises in

which you might need to purge IDs or otherwise

intervene manually. It also explains the ID

numbers you see in ClockWorks’ Sync/MMC

window.

Reassigning soft IDs

To reassign soft IDs, you must ﬁrst perform a hard

reset of the Digital Timepiece to clear all current

soft ID assignments.

To hard reset the Digital Timepiece and then

reassign all soft IDs:

1 Power off the Digital Timepiece.

2 Turn off all MMC devices connected to the

Digital Timepiece.

3 Hold down the SOURCE button on the Digital

Timepiece’s front panel.

4 While holding down the SOURCE button,

switch on the Digital Timepiece and keep holding

down the SOURCE button until the SMPTE frame

rate, Word rate, and Time Base mode LEDs become

steadily illuminated.

Now to reassign soft IDs, switch on the devices

connected to the Digital Timepiece in the order in

which you would like them assigned, waiting at

least 5 seconds between each device.

SETTING UP MMC SLAVES

The following sections provide details for

connecting various types of devices as MMC slaves

to the Digital Timepiece.

Setting up ADATs (and compatibles)

ADATs are easy: all you have to do is connect them

as slaves to the Digital Timepiece. They do not

require any further preparation. The Digital

Timepiece takes care of setting their IDs and

establishing communication with them.

Setting up DA-88s

After you have connected a single DA-88 as a slave

to the Digital Timepiece, be sure to choose a hard

ID other than zero (0) using the ID “dial” on its rear

panel. (Zero is reserved for the master device in the

DA-88 chain, which in this case is the Digital

Timepiece.) If you have a chain of DA-88s

connected as slaves to the Digital Timepiece, make

sure that each one’s ID “dial” is set to a unique ID

number and than none of them are set to zero (0).

When these hardware ID preparations are made,

the Digital Timepiece will be able to successfully

assign a soft ID to each DA-88.

Setting up a DA-88 with an SY-88 sync card

If you are using the DA-88 as a SMPTE time code

master over the Digital Timepiece as shown in

Figure 3-13 on page 20 or Figure 3-14 on page 21,

then the SY-88 card serves as a master over the

Digital Timepiece. Therefore, instead of sending

MMC commands to the Digital Timepiece, you

need to send them to the SY-88 card. You can still

control your entire rig from your computer

software (or other MMC controller), but you’ll be

doing so via the SY-88 instead of the Digital

Timepiece, and the Digital Timepiece will simply

act as a time code slave to the SY-88 card.

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