User guide

Request Mixer Settings
F0 = Start message
1F = LCS Audio manufacturers ID
7E = Matrix3 Product ID
25 = External Control Subsystem
xx = Frame ID being queried - use the checksum version 0x00 to 0x3E
(All LX-300s will respond if 3F (Broadcast) is used)
42 = Command: Get Mixer Parameter Value Array
0A = length of following data (0B if SpecSpace byte is present)
00 = Place holder for Tag Number (tag number not used)
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 = Checksum
F7 = End message
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 (ID of replying LX-300)
42 = Command: Mixer Parameter Value Array
XX = Length of Following Response Data
...
data bytes go here
...
XX = Checksum
F7
SpecSpace Values
SpecSpace values were added as a way to increase the number of Mixer Categories from 128 to 16,384 (128 cat-
egories x 128 SpecSpaces).
The response of this request message is sent directly back to the requesting computer on the same serial port as
it was received.
Response Using SpecSpace Value
F0 = Start message
1F = LCS Audio manufacturers ID
7E = Matrix3 Product ID
25 = External Control Subsystem
3E = Reply ID code
XX = Source Frame ID
41 = Command: Get Mixer Parameter Value
08 = Length of following response data (09 if SpecSpace byte is present)
XX = Tag number of request
xx = Category
xx = low 7 bits of parameter Index0
xx = hi 7 bits of parameter Index0
21
SpecSpace Values