User guide

xx = low 7 bits of parameter Index1
xx = hi 7 bits of parameter Index1
xx = low 7 bits of Value
xx = hi 7 bits of Value
xx = optional control point SpecSpace byte
xx = Checksum
F7 = End message
Some categories include many parameters, either indexed by INDEX0, INDEX1 or both indexes.
To request a single dimension array of these parameters, the following template is used:
F0 = Start message
1F = LCS Audio manufacturers ID
7E = Matrix3 Product ID
25 = External Control Subsystem
XX = Frame ID (or broadcast using 3F)
42 = Command: Get Mixer Parameter Value Array
0A = length of following data
(0B if SpecSpace byte is present)
XX = Tag Number
xx = Category
XX XX = Start index 0 (lsb first)
XX XX = Start index 1 (lsb first)
XX XX = End index 0 (lsb first)
XX XX = End index 1 (lsb first)
xx = optional SpecSpace byte
xx = Checksum
F7 = End message
You can request values along either dimension on only one index.
Therefore, Start Index 0 and End Index 0 must be equal, or Start Index 1 and End Index 1 must be equal.
You can request a MAXIMUM of 32 parameters at a time.
See the Mixer Categories, Indexes, and Values (p. 23) section below for description of CATEGORY, INDEX0,
INDEX1, and VALUE.
The response of this request message is sent directly back to the requesting computer on the same serial port as
it was received.
The response is in the form:
F0 = Start message
1F = LCS Audio manufacturers ID
7E = Matrix3 Product ID
25 = External Control Subsystem
3E = Reply ID code
XX = Source Frame ID
42 = Command: Get Mixer Parameter Value Array
XX = Length of Following Response Data
XX = Tag Number of Request
XX = Parameter Category
XX XX = Start Index0 (LSB first)
XX XX = Start Index1 (LSB first)
XX XX = End Index0 (LSB first)
XX XX = End Index1 (LSB first)
...
XX XX = Up to 32 requested values. LSB first.
xx= SpecSpace byte (optional)
22
SpecSpace Values