Metric Halo 2882 operating guide - Manual (Page 22)

Mobile I/O User’s Guide
14
by both S/PDIF and AES outputs. This allows you to send the same stereo
pair to two devices at once.
We recommend that you use the AES interconnect mechanism to establish
the digital communication between the Mobile I/O and other digital
devices. The jitter and electrical noise tolerance on AES interconnects is sub-
stantially better than with S/PDIF interconnects. The AES interconnect stan-
dard is equivalent to balanced audio interconnections. If you need to use S/
PDIF interconnects, try to use the shortest cables you can and, if possible,
use special purpose 75 ohm S/PDIF or video cables.
The RCA connectors used for S/PDIF are friction fit coaxial connectors.
When you connect them, ensure that they are fully inserted and tight.
The XLR connectors used for AES are fully locking. When connecting to
them, make sure that you align the pins and insert firmly. When you remove
the connector, make sure that you release the lock by pressing the lock
release button before you pull the connector out of the Mobile I/O.
I NTEGRATED SRC
Normally, when working with digital audio transport, you must take care to
ensure that all devices communicating with one another are synchronized to
the same audio clock. While this is still an important consideration with
Mobile I/O, the hardware provides a special feature to simplify copper-based
digital connections to the box. The digital input on Mobile I/O has an
optional asynchronous sample rate converter (SRC) that will automatically
match the sample rate of the incoming audio to the sample rate of the
Mobile I/O. This converter is enabled by default and you can disable it in the
System section of the MIO Console. If you have synchronized the Mobile I/
O to the external source (using any of the extensive synchronization meth-
ods provided by Mobile I/O), you will generally want to disable the SRC in
order to get 24-bit transparent audio transport over the digital input.
O PTICAL - BASED D IGITAL A UDIO
Mobile I/O provides two TOSLink™ connectors on the back panel. One is a
transmit connector and the other is a receive connector. These connectors
are used with Plastic Optical Fiber (TOSLink) cables to communicate with