Service Manual CHAPTER 2 - SYSTEM DESCRIPTION July 24, 2008
SX-48 Page 9
Chapter 2 - System Description
Contents of Box
When you receive your SX-48, you should find the following parts in the box:
• One SX-48 chassis, pre-configured with the I/O cards you ordered.
• One IEC power cord
• One SX-48 Quick Start Manual
• One SX-48 Installation Manual (this book)
• One SX-48 CD-ROM containing software and your User Manual.
SX-48 Sub-Systems
The SX-48 consists of a number of sub-systems that are described below.
Base Unit
The Base Unit includes the metalwork chassis, the front panel, the Power Supply Unit, and the
motherboard.
System Boards
Every SX-48 includes the following system boards:
MADI
The MADI board provides an industry standard interface carrying 56* channels of audio at up to 48
kHz, or 28 channels at up to 96 kHz.
*Note that only the first 48 channels can actually be used at 48 kHz, because the unit only supports
that number of analog or AES digital channels.
Sync 1
The Sync 1 board provides interfaces for the following synchronization signals:
Internal (Crystal), AES digital audio, Word Clock , video (PAL or NTSC) and TSCP (Fairlight’s Total
Studio Connectivity Protocol).
I/O Boards
There are four types of I/O boards that can currently be fitted into the SX-48, in a variety of
combinations.
AI1 – Analog Input
The AI1 board provides 8 analog inputs at +4 dBu.
AO1 – Analog Output
The AI1 board provides 8 analog outputs at +4 dBu.
AO1M – Analog Output with Speaker Protection
The AO1M board provides 8 analog outputs at +4 dBu. It also includes circuitry that prevents pops
appearing at the outputs on power up and power down, and is therefore suitable for output to high
power monitoring systems.
AES1 – Digital I/O
The AES1 board provides 8 inputs and 8 outputs in AES/EBU format.
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