MOTU 828mkII User Manual page 107

Troubleshooting
CHAPTER 15
Using Pro Tools, Sound Manager and -50 error (OS
9 only)
When using Sound Manager, Pro Tools software
will only allow audio input via the Macintosh's
Built-in hardware. Therefore, you cannot use the
828mkII as the input device to Pro Tools software.
If the 828mkII driver is selected as the input device
in the Sound Control Panel, Pro Tools will return a
-50 error and not launch. You can, however, select
Built-in as the input device and the 828mkII as the
output device in the Sound Control Panel. After
doing so, you can run Pro Tools and monitor your
output through the MOTU 828mkII.
Sample accurate sync in AudioDesk and Digital
Performer
When you first use sample accurate sync, be sure to
go to the Receive Sync dialog in Digital Performer
or AudioDesk and switch from "MTC" to "Sample-
accurate."
Cubase - MOTU 828mkII inputs and outputs are
not visible in Cubase
You probably need to enable them in Cubase.
Can't authenticate AudioDesk
When installing software off the CD-ROM, the OK
button does not become active until you have
entered in your name and a valid keycode. Your
name must contain at least 3 characters, and you
must enter the keycode exactly as it appears in your
AudioDesk manual (on the inside of the back
cover).
MOTU FireWire Audio Console or Control Strip
module settings are grayed out for no reason
Some settings cannot be accessed while the
828mkII is active. Quit all audio software that uses
the 828mkII (including any Sound Manager
applications, if any), and then the 828mkII settings
should no longer be grayed out.
No input on an ADAT tape deck
If you are having trouble recording on your ADAT
tape deck from the 828mkII, check the Digital
input setting. After power cycling, tape decks often
come up configured to record from their analog
inputs. You won't be able to record from the
828mkII to a tape deck until it is switched to digital
input. Tip: configure this in ClockWorks or
AudioDesk if you want your decks to come up in
the right mode when power cycled.
Clicks and pops under word clock sync
Many problems result from incorrect word
clocking. It is essential that all digital devices in the
system be word locked. Consult "Making sync
connections" on page 22 for detailed information
on how to word clock your gear. Whenever there is
any weird noise or distortion, suspect incorrect
word lock.
Clicks and pops under ADAT Sync
Sometimes, the ADAT sync cable seems to be
plugged into the 828mkII, and it partially works.
But it isn't really all the way in. This can cause clicks
when slaved to ADAT 9-pin. Make sure the ADAT
Sync cable plug is really seated firmly.
Clicks and pops due to hard drive problems
If you have checked your clock settings and you are
still getting clicks and pops in your audio, you may
have a drive related problem. Set your Clock
Source to Internal and try recording just using the
analog inputs and outputs of the 828mkII. If you
encounter the same artifacts you may want try
using another drive in your computer. Clicks and
pops can also occur when the drive is severely
fragmented, the disk drivers are outdated, or if you
are using a SCSI accelerator that is not optimally
configured for working with audio.
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