Metric Halo 2882 operating guide - Manual (Page 93)

Mobile I/O User’s Guide
85
hardware has failed since it will consistently keep devices from connecting
properly to the computer. If the computer is damaged, you will need to con-
tact the manufacturer for a repair or, as a stopgap measure you can use a
third-party FireWire adapter card.
If the FireWire hardware on the Mobile I/O has been damaged (an event that
has never occurred), the Mobile I/O will not communicate with any other
devices. In this case, please contact Metric Halo support for help in getting
your Mobile I/O hardware repaired.
ADAT D OES N OT A PPEAR TO L OCK
The Mobile I/O ADAT input clock is automatically phase synchronized to
the incoming ADAT stream. If you use the ADAT as the clock source for
Mobile I/O, you will always be able to lock to the input stream as long as the
ADAT output of the external device feeding the Mobile I/O is correctly for-
matted and does not have excessive jitter.
An example of a device that has excessive jitter due to an ADAT implemen-
tation problem is the Digidesign ADAT bridge. Digidesign’s more recent
implementations (e.g. the ADAT interface in the Pro Tools HD system) do not
exhibit this problem.
If you use a clock source other than the ADAT input, the input stream lock
will depend on the detailed properties of the external ADAT source’s
ADAT-to-clock synchronization. If the synchronization does not meet
Mobile I/O’s requirements you will not get a clean ADAT signal, even if the
two devices are nominally synchronized. The ADAT implementation from
Alesis works fine in all cases, but other devices may not. In the case that you
want to use ADAT input and synchronization is not working, select ADAT as
your clock source and your sync problems will disappear. This discussion
does not generally apply to the ADAT output.
MIO C ONSOLE IS NOT SYNCHRONIZED WITH THE H ARD-
WARE
If you quit MIO Console or reboot the Mobile I/O hardware while MIO Con-
sole is running, the settings of the Console will become desynchronized
with the hardware.