Service Manual CHAPTER 5 - SX-48 IN A DREAM II SYSTEM July 24, 2008
SX-48 Page 19
Order of Channels
DREAM II sees all channels to and from the SX-48 as MADI channels, regardless of which audio
interface cards are installed.
When patching SX-48 inputs to Tracks or Live Feeds, always choose MADI as the type of input.
Similarly when patching physical outputs.
Naming Channels
If it is difficult to remember which MADI channels correspond with analog inputs, outputs and so on,
you may wish to name the I/O channels. This can be done once and kept for all following sessions.
For example, if an AI1 is installed in Slot 1, DREAM II’s MADI inputs 1 to 8 could conveniently be
named SX-48 AI1 to SX-48 AI8 or something similar, while MADI outputs 1 to 8 could be named NC
(not connected).
To name channels, open the following file: C:\Program Files\Fairlight\FMC\Data\I-O config.TXT
By default, this file contains naming for your SX-20 inputs and outputs. Directions for how to name
channels are contained in the header of the file. Here are specific instructions for naming SX-48
channels.
Step 1 Find the line starting with IO_CONFIG,3
This line tells the system how many MADI channels it should display. By default there are zero
inputs and zero outputs (before you connected the SX-48 or any other MADI device), so it
reads IO_CONFIG,3,0,0.
Step 2 Edit the line, changing the zeros to 56, if you have one SX-48, or multiples of 56 if
you have more than one.
So if you have a single SX-48, the line would read IO_CONFIG,3,56,56.
If you have two SX-48s, the line would read IO_CONFIG,3,112,112, and so on.
NOTE! Each BNC MADI pair can address 56 MADI channels.
However, each SX48 can only address the first 48 Input and Output channels of that 56 MADI
channel stream.
THEREFORE, the last 8 Input AND Output channels (MADI 49 – 56) should be BLANK!
Step 3 For the first channel, insert a line like the following: INPUT,3,1,Name
This means: MADI Input number 1, Name…. For Name you can put anything up to 11
characters including numbers, for example “SX-48 AI1”
Step 4 Add another line for the next channel, looking like this: INPUT,3,2,Name
Step 5 Add lines for all your other channels
Remember that some channels are outputs, so the line should look like
OUTPUT,3,number,name
Also remember that many channels do not exist
Control via Ethernet
Setting the sample rate in your DREAM II system will automatically change the SAX-48’s sample rate,
if they are connected via Ethernet.
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