MOTU Digital Timepiece User's Guide download pdf (Page 95)

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CHAPTER

14 Troubleshooting

COMMON PROBLEMS AND SOLUTIONS

My DA-88 or DA-38 just sits there and doesn’t

respond to cueing commands.

Is the DA-88’s MMC device ID on the rear panel set

to zero (0)? If so, set it to any other number besides

zero (which is reserved for the master device of the

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

case). If you have a chain of DA-88s, make sure you

give it an ID number that isn’t being used by any

other DA-88. If you have a DA-38, set its ID to 1.

When I try to engage play from the console (or any

other time base master), my Sony 9-pin deck

doesn’t go into play. It appears to shuttle between

rewind and play.

You are likely trying to locate to a frame location

that the 9-pin cannot locate to. This might happen

if, for example, the 9-pin was striped with its LTC

card at 10:00:00:00, but you are trying to play from

1:00:00:00. To correct this, temporarily put the 9-

pin in “local” mode (or your 9-pin device’s

equivalent mode), and engage play from the front

panel. The 9-pin device’s display should tell you the

current frame location. Adjust the console’s offset

appropriately. If you are slaving the DTP to VITC,

try adjusting the VITC calibration.

When using my ADAT or ADAT/BRC as master

time base, I am unable to send record commands to

other MMC devices. Why?

With the ADAT or ADAT/BRC as master, at least

one track on the master ADAT must be record-

enabled in order for record commands to pass to

other MMC devices. All other transport

commands will function, however.

I can’t get my MMC controller to control the Digital

Timepiece. Why not?

Check the device ID setting in your MMC

controller for the Digital Timepiece. And watch out

for zero-based numbering schemes, which

consider the range of MMC IDs to be from 0-127

instead of 1-128. See “Zero-based numbering

schemes” on page 60 for further information.

I’m having trouble with setting the MMC device ID

for the Digital Timepiece in my sequencer or MMC

controller. What am I doing wrong?

See above.

Why does the time code display on slaving MMC

devices run much faster than the time code display

in the console?

You probably do not have matched sample rates. If

you are in internal mode, be sure that the Digital

Timepiece’s sample rate matches slaving devices’

sample rate. Also note: DA-88 tapes are formatted

with a particular sample rate, so if the DA-88’s

sample rate is not matched, you may want to

change the Digital Timepiece’s sample rate to

match or reformat the tape.

I accidently edited one of my device’s soft ID

numbers, now when I try to do any function from

the console (like record-enable), the wrong MMC

device responds. Is there an easy way to ﬁx this?

Yes. Simply power cycle the Digital Timepiece. This

forces the Digital Timepiece to re-identify MMC

devices and reassign soft ID numbers.

I’m trying to set a negative offset for my ADAT in

ClockWorks, but the ADAT doesn’t seem to

respond.

Check the amount of the offset. ADATs do not

support more than a negative one hour offset.

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MOTU Digital Timepiece User's Guide Page 95

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