The ACU2-04-01 ACE Communication Unit is a compact digital audio distribution device engineered for industrial simulation environments. It provides four-channel stereo support in a reduced form factor, connecting remotely located operator headsets, speakers, control panels, and peripherals to a central system via the ACENet architecture. The unit functions as a real-time data transport mechanism, passing audio between devices without storage capability.
Technical Specifications
Audio I/O
• Input: 48 kHz sample rate, 4.6 kΩ impedance, 6.5 Vpp maximum level
• Input gain: −8 dB to +57 dB (software configurable); 1 dB steps available from +2 dB to +57 dB
• Microphone power: +12.5 VDC (software-enabled)
• Frequency response: 20 Hz to 20 kHz, ±1.5 dB
• Output impedance: 10 Ω at 700 mA; −25 dB to +10 dB gain
• Output level: 2.24 Vpp (0.78 VAC RMS) into 8 Ω; 5.1 Vpp maximum
• Output power: 0.08 W at 8 Ω
Memory
• Volatile (SRAM): 69 KB for internal MCU operation
• Non-volatile (Flash): 8 Mb for user-modifiable firmware
• No media storage capability
Interfaces
• ACENet port: 100 Mbps full duplex, Category 5e or better; direct connection via crossover cable to Telestra or Voisus servers
• Serial ports: Two RS-422/RS-232 ports (RJ-12) for HHT and control panel connectivity
• Audio/PTT: Four DB-15 connectors supporting stereo operation per connector
– Key Features
• Ethernet-based hub-and-spoke architecture over extended distances
• Synchronized 48 kHz digital audio distribution with extremely low transport latency
• Dedicated network segment requirement for ultra-low latency performance
• Software-configurable input gain with flexible range selection
• Reduced form factor evolution from earlier ACU models
– Typical Applications
Operator communication networks in distributed simulation exercises, multi-channel audio routing for tactical training systems, and remote peripheral control in Telestra and Voisus environments.
– Compatibility & Integration
The ACU2-04-01 integrates with Telestra and Voisus platforms via ACENet architecture, supporting synchronized audio distribution across simulation networks requiring sub-millisecond latency characteristics.
