Specifications

Model AC1120A, AC1121A, AC1122A, AC1123A
20
In adjusting the volume you want to keep the sound level as read on the VU meter
at or below Position 10 (0 VU) for the loudest level at the input.
When finished, press the ENTER button to save any changes or exit the audio
adjustment mode. When you exit this mode, the last audio input that was routed to
output #1 prior to entering the setting mode will be restored!
Audio Setup mode times out if no activity is detected for 1 minute, the last input
gain settings will be saved.
3.2 Control Commands (RS-232 and IP)
The matrices can be controlled via an external control system by using RS-232.
Additionally, Models AC1121A and AC1123A can be controlled through an IP
port. Any program capable of standard serial communication in ASCII format is
capable of working with the matrices. Most PCs with Microsoft Windows
operating systems have HyperTerminal™ pre installed with this capability. There
are also many free Terminal Emulator and Telnet software programs available for
download on the internet.
Note on RS-232 port availability on your PC
Most PCs and notebooks do not have a serial port. So to program the
Matrix Switch you may need a USB to RS-232 Serial converter. These
are available from Black Box (Model IC199A-R3).
Figure 14 – USB to RS-232 Adapter
Use Figure 8 to connect the unit to the PC’s serial port. Use 9600 Baud, 8 bits, No
Parity, 1 Stop bit, No flow control.
Upon power up, the matrix will output a screen similar to the figure below
through its serial port(s).
Unit's name:
Version 2.4
Build # 7
BBox-I-A-8-8
Figure 15 – Power on screen