Specifications

Modular I/O Configuration Guide30
Cooling
Install the IO93 with at least 1 RU of space above and below the frame and unrestricted airflow on the sides.
Master Sync Module
Make sure to install a master sync module in one of the red reserved slots before applying AC power. This is typically an SY983
Sync module, but the following other modules may be used as a master sync module when set to Master mode: MM935 MADI,
MM936 MADI, DD915 8ch AES I/O, DD916 8ch AES I/O, and HD944 16ch De-embedder.
Place only one master sync module in the frame except when using two SY983 Sync modules in redundant sync mode. In this
case, configure the SY983s for redundant sync operation and fit both modules into the frame’s red reserved slots. See page 41.
The red reserved slots may be used for other modules after a sync module is installed.
Audio Bus Linking
The IO93 backplanes are linked by an internal interconnect PCB that contains 32 switches to link or separate the front and back
audio busses. Some disassembly is required to access these switches. Since the Sync and Control busses of the front and rear planes
are permanently linked, only one FC972 Remote and one master sync module are required.
IO93 with red master sync slots and PCB interconnect for audio busses
Four red slots for master sync source modules
PCB with audio bus switches