M-Audio Mac Syncman [17/24] Misc info remotely writing smpte

Misc. Info - Remotely Writing SMPTE

SYNCMAN is also capable of writing a SMPTE stripe with any specified

Offset. When SYNCMAN receives a Time Code Off-set message it will

automatically start writing SMPTE with the correct, specified Offset.

When started remotely, SYNCMAN will continue to write SMPTE until

a MIDI System Stop message is received or until the SYNCMAN Write

button is pressed. Mac Syncman comes with a utility that allows you to

control these and other functions right from the computer.

The MIDI messages that Mac Syncman responds to have the following

format:

• MIDI Time Code Offset Message (in Hex):

$F0-$7E-00-04-00-00-%0ffhhhhh-Mn-Sc-Fm-

00-00-00-$F7

where hhhhh = hours (0 to 23)

and ff = SMPTE format*

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ff = 00 is 24 frames/sec

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ff = 01 is 25 frames/sec

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ff = 10 is 30 Drop frame

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ff = 11 is 30 Non-Drop frame

* IMPORTANT: Bits 5 and 6 of the hours byte contains the

SMPTE format of the SMPTE which will be written. Therefore

these bits must be set correctly to the desired SMPTE format.

• MIDI System Stop Message (in Hex):

$F0-$7E-00-04-04-00-$F7

Sync Stripe Duplication and Regeneration

On occasion you may have to duplicate a sync stripe. This may is some-

times required if you have to move a SMPTE stripe from one tape to

another, or from one tape deck to another. The Mac Syncman Duplicate

feature only reshapes, it does not repair. If you need to repair a dam-

aged SMPTE stripe you will need to regenerate the stripe, not

duplicate

it.