ASTi Telestra 4 Training Manual (Ver. 1, Rev. F)
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Copyright © 2010 Advanced Simulation Technology inc.
2.3. Audio Distribution Devices
2.3.1. ACU (ACENet Communication Unit)
The ACU is a remote interface for audio and input/output (I/O) unit for ASTi’s Telestra 4 suite of
products. The ACU provides the AD/DA conversion. All audio and I/O is digitally distributed
between ACUs and Targets for maximum noise rejection and reliability. This unit may be con-
nected directly to the Target or more typically through an ASTi approved ACENet switch. Firm-
ware software updates and gain configuration for the ACU are performed through the Remote
Management System (RMS). The hardware is available in a 1U (19 inch) two, four, and six chan-
nel rackmount configuration. Multiple Targets can share ACU channels when using a four or six
channel ACU; however, the channels are grouped A/B, C/D, and E/F and different Targets cannot
share two channels in a grouping.
The platform components consist of:
• Independent, software-configurable audio inputs and outputs (1 per channel)
• Control Inputs (3 per channel)
• Digital Outputs (1 per channel)
• RS-422 serial ports (1 per channel)
• 48KHz digital audio distribution
• 2, 4, or 6 DB-15 connectors
For more information on the ACU including pinout diagrams, please see the ACENet Communi-
cation Unit Technical User Guide (DOC-01-TEL4-ACU-UG-1).
Figure 5: ACU Front Panel
ACENet ACENet
Power
ACU Status
Indicators
ACENet Ports
Channel Status
Indicators
Serial Ports
Dip Switches
Yellow = Blinking (physical and master)
Solid (physical and slave)
Green = Activity
Figure 6: ACU Rear Panel
