MOTU Digital Timepiece Instruction Manual download pdf (Page 134)

MIDI MACHINE CONTROL WITH THE AV

132

There is no advantage to doing MMC this way; in

fact, it will probably not provide as stable a time

base as the MIDI Timepiece AV does in the

recommended scenario described in the previous

section. You should only really use this setup if you

have a MMC device that does not have the ability to

be a time code slave and therefore must be the

master.

MMC and video

If you are working with video, and you want MMC

control of your rig from your computer software

(or LRC-compatible controller) via the MIDI

Timepiece AV, your video deck needs to have the

ability to either:

■ Synchronize to external SMPTE time code

(while locked to house sync)

■ Support MMC

Without either of these capabilities in your video

deck, the MIDI Timepiece AV has no way to

control the video deck transports. You’ll instead

have to use your video deck as the transport and

address master.

If your video deck supports the SONY 9-PIN

protocol, consider purchasing Mark of the

Unicorn’s Digital Timepiece, which lets you to

control your video deck from a computer (or other

MMC controller).

SETTING MMC DEVICE ID’S

Each MMC device requires a unique MMC device

ID, including the MIDI Timepiece AV itself. For

convenience, the MIDI Timepiece AV

automatically sets the device ID’s of all ADATs

chained from its ADAT sync port. This means that

you don’t have to do anything in regard to setting

the device ID’s of your ADATs. The factory default

ID of the MIDI Timepiece AV is 20, and the default

ID of the ﬁrst ADAT connected to the MIDI

Timepiece AV is 1. Other chained ADATs are

automatically set to ID’s 2, 3, and so on. You can

change these defaults if you’d like.

To change the MMC device ID in the MIDI

Timepiece AV using the front panel LCD:

1 Use the WINDOW knob to go to GLOBAL

HARDWARE SETUP.

2 Turn the CURSOR knob clockwise until you see

the MMC device ID window as shown below.

3 Use the CURSOR and VALUE knobs to give the

MTP AV and the ﬁrst ADAT unique MMC device

ID’s.

Connecting ADAT(s) to the MIDI Timepiece AV

Once you’ve connected a chain of ADATs to the

MIDI Timepiece AV, they do not require any

further preparation. The MIDI Timepiece AV takes

care of setting their MMC device ID’s and

establishing communication with them.

SETTING UP OTHER MMC DEVICES

If you have an MMC-compatible device (other

than an ADAT), you can slave it to the MIDI

Timepiece AV. But ﬁrst, you need to make the MIDI

Timepiece AV send MTC (or LTC for some

devices). To send MTC, use the SMPTE

DESTINATION window in the front panel LCD

(it’s in the SMPTE/sync menu). Or you can do so in

MTP AV Console by making connections from the

MMC device ID #

D MTP-AV 20 E

MMC device ID #

D adat 1 E

!USB Interfaces Manual Book Page 132 Tuesday, October 10, 2000 12:43 PM

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