MOTU Digital Timepiece User's Guide download pdf (Page 97)

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101

TROUBLESHOOTING

Since connecting the Digital Timepiece to my MIDI

interface, I've been encountering SysEx errors in

my editor/librarian.

The Digital Timepiece in its default state will “poll”

for MMC devices. Because of this, the Digital

Timepiece will transmit SysEx. If this SysEx is

merged with SysEx that the MIDI device or editor/

librarian is expecting, it may cause SysEx errors. To

correct the problem, you can temporarily turn off

the Digital Timepiece, or you can turn off “Enable

automatic device detection” in the Device Settings

and Routing window's Port Setting for all devices.

Doing so disables the Digital Timepiece's polling.

Most, but not all of my LRC buttons work.

Review the LRC section in the user's manual, and

compare values in the LRC table with the LRC

values generated by your LRC (use a video monitor

if necessary to display the values). If values do not

match, use the calibration procedure to “ﬁne tune”

your Digital Timepiece for your LRC.

When I change time base mode to ADAT, the ADAT

in my console software appears with an “X”

through it, and a Purge button displays. Why?

Neither an ADAT nor DA-88 can simultaneously

be a slave and master at the same time. In ADAT

master mode, you are essentially controlling the

ADAT from its front panel, and you lose the ability

to control device-speciﬁc functions from the

software console.

Why does my DA-88 display “Warning E CLOC”

on the front panel in some time base settings?

This is a warning that the DA-88 displays if there is

no detection of clock (ex. ADAT time base setting).

In most cases, once the time base master goes into

play and clock is generated to the DA-88, the error

goes away.

When I slave the DTP to my analog multitrack (or

other analog SMPTE source), sometimes when I

stop and start the transports, it takes the DTP

much longer to lock up. Why?

When the DTP locks to LTC, it tracks the speed of

the incoming time code so that it can be ready to

freewheel and jam-sync at the same speed as the

time code. Some analog tape decks (and other

analog video and audio recording equipment),

especially older ones, leave their playback head

engaged as the tape transport starts and stops. In

addition, they don’t automatically mute when the

transport is starting up or stopping. The result is

that when you stop the deck, the LTC slows down

drastically as the transport comes to a stop. When

the DTP tracks this drastic slow-down in the time

code, its phase lock engine adjusts to the drastically

slower speed. When you start feeding it normal

time code again, it has to spin back up to a normal

speed, which takes much longer than usual because

of the size of the change. So initially, you might

experience a lock-up time of approximately 5-10

seconds. If you stop the deck then hit play again,

the DTP might take 20 seconds to a minute to lock.

If you then power-cycle the DTP, the lock up time

the next time you hit play will be back to the

normal 5-10 seconds.

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MOTU Digital Timepiece User's Guide Page 97

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