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22 Audio Authority AVAtrix, 1156 and 1166 User Manual
Appendix B: RS-232 Serial Protocol
Model 1166 and 1156 with or without Model 1176 expanders can be controlled via RS-232 from a PC or
dedicaed conolle. Follo he xecicaion and command xoocol decibed belo.
Specifications
General Commands
These commands can be used at any time during operation of the 1166 to change the state of selected
settings.
Command Description
N- Turn AutoSelect Off
N+ Turn AutoSelect On
P Select Professional screen
R Select Residential screen
Q- Unlock AutoSelect
Q+ Lockout AutoSelect
V- Unlock front panel controls
V+ Lock front panel controls
W- Unlock front panel optical IR receiver
W+ Lockout front panel optical IR receiver
Y- Disable display blanking
Y+ Enable display blanking
NOTE: Alxha chaace ae no cae-eniie. ASCII code no xecied ae ignoed (i.e. conol code,
unused alphanumeric characters, etc.)
Source Selection Commands
Assign or change input sources to the 1166 Main Output, any individual Wallplate output, zone groups of
Wallplates, or all Wallplates. In the “Command” column below, actual commands are shown in upper case,
and variables are represented by lower case bold characters (commands are not case-sensitive).
Command Name Description
Uwxy Select Unit Assign Source y to an individual Wallplate wx
Zzy Select Zone Assign Source y to all Wallplates in a Zone z
Xy Select All Assign Source y to all Wallplates
My Select Main Assign Source y to the 1156/1166 Main Output
Variables: w = Row A-L, x = Column 1-6, y = Source 1-6, z = Zone 1-6.
Interface connector DB-9
Electrical rating Pins 2 and 3, ±15 VDC
Pin out Pin 2, Tx
Pin 3, Rx
Pin 5, Ground
Shell, Ground
Null modem cable Not required
Transfer Rate 9600 bps
Data Bits 7 or 8 (Bit 8 is ignored)
Stop Bits 1
Parity Odd, even, space, mark or none
Flow Control or
Data Flow
None
Character type ASCII