Specifications

Chapter 1: Introduction 9
IO93 Double-Sided Frame
The IO93 Double-Sided Frame is a 3RU frame with redundant PSU and two backplanes. Master sync source module(s) must be in-
stalled in one (or two) of the four red slots in the rear plane near the power outlet before applying AC power. Spare red slots may
be used for other modules.
Top view of IO93 frame layout with red slots reserved for Master sync source modules
IO93 Frame Parameters
Master Sync
Source
The IO93 frame consists of one sync zone that requires one master sync source. This is typically an SY983 Sync HD
module or two SY983s configured in redundant sync mode.
Another I/O module with Master mode may be used as an alternate master sync source, but not with an SY983.
Control
Configuration
Each IO93 must be fitted with an FC972 Remote to control mic preamps remotely and externally configure all modules
(except analog line in/out and WC984) remotely using a web browser. Install only one FC972 in a frame.
Frame Space The IO93 frame consists of a front plane with 18 module slots, and a rear plane with 19 module slots.
Power The IO93 frame contains dual-redundant PSUs: 13 A @ 5 VDC.
Audio Busses
Each of the two backplanes has 32 audio busses that can be linked or split between backplanes using internal DIP
switches. Depending on the configuration of the modules fitted, each bus can function in 2CH or 8CH mode.