User guide

For best sync, the USD should be connected to the Digiserial port (available on d24 and Mix Cards) and Machine
Control (9-pin) should be connected to the modem or printer port. When the USD is on the Mac Serial port there is
potentially some latency in resetting the USD so the lock will not be as accurate (+/- 5-10 samples vs. +/- 1
sample).
USD Index | All FAQ Index
[4432]
How do I scrub frame by frame?
Set the "time scale" to Time Code and select "1 frame" in the Nudge/Grid pop-up menu. Jog the deck via the plus
(+) or Minus (-) key on the numeric keypad.
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[4433]
What's the most common cable config for the USD in resolve mode?
Black Burst (BB) or House Sync à USD Vid Ref Jack
BB to Video Deck Sync IN
USD Super Clock OUT to 888/24 Slave clock IN (888/24 says "Slave" on front panel)
USD to Digiserial
Deck to USD LTC IN. Use the 75 ohm Terminator on the other Video Ref Jack.
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[4434]
How do I determine the USD's firmware?
Power cycle the USD and look at the numbers that first appear on the USD. E.g., 312 means firmware version 3.12.
USD Index | All FAQ Index
[4435]
What should I verify if Pro Tools does not lock or randomly drops sync?
Try a tape you know has good TC (VERY important)
Verify that the 75 ohm terminator is attached to one of the parallel Vid Ref Jacks
Verify all connections (as outlined above)
Verify configuration in the session setup window (frame rate and sample rate, positional reference and clock
reference).
Verify configuration in the peripherals window (synchronization = USD; port = Digiserial)
If all else fails, trash the DAE prefs folder, Digisetup and Pro Tools preferences in MAC Hard Drive > System Folder
> Preferences folder.
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[4436]
When did Pro Tools start supporting the Digiserial port for the USD?
Pro Tools v4.3 first supported the Digiserial port.
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[4437]
Can I update the USD firmware from within Pro Tools?
Yes. In Pro Tools 4.31 or later. Go to the peripherals dialog and select "update firmware". Then navigate to the USD
folder and select firmware update file.
USD Index | All FAQ Index