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ACE Remote Interface Unit (ACE-RIU)

Latest Firmware Version: 2.11

Technical User Guide

The following information is pulled from the ACE-RIU Techincal User Guide. For a comprehensive overview of the ACE-RIU, please see the full guide:

View Guide

The ACE-RIU is a compact 48kHz digital and audio distribution module that connects remotely located operator headsets, speakers, and control panels to the ACENet network. The ACE-RIU is compatible with the Telestra 4 and the Voisus Server product lines. The ACE-RIU provides lownoise analog-digital conversion and low-latency audio distribution.

A comprehensive overview of the ACE-RIU can be found in the Technical User Guide

General Specifications

Compatible with Voisus, Telestra
Part Number ACE-RIU
Dimensions 7.5" length x 5.55" width x 1.55" height
Weight A packaged ACE-RIU weighs 1.5 lbs. The included power supply weighs 0.5 lbs
Power Source Individual power supply, included.
Power Consumption 15 VDC, 2 A
Mean Time Between Failure (MTBF) 251,042.45 Hours (COTS)
119,713.60 Hours (Mil Spec)

Audio Input/Output

Audio Input

Impedance 1 kΩ
Level 2.5 Vpp max

Audio Output

Impedance .1 Ω into an 8 Ω
Max. Signal Level 10vpp

Memory Devices


Type Size User Modifiable Function Process to Clear
Micro-controller Internal SRAM 69 KB No Used as RAM for an internal MCU Remove Power
Count to 30
Restore Power


Type Size User Modifiable Function Process to Clear
Micro-controller Internal 256 KB Yes Firmware None
Flash 8 Mb Yes Firmware None


DB-9 Connector

(Audio Interface)

Terminal Block

Mic Power


ASTi warrants to the buyer and its customers that all items delivered and all services rendered hereunder will conform to the requirements hereof and will be free from defects. In addition to other remedies that may be available at law or in equity, the buyer may return to ASTi any nonconforming or defective items or require correction or replacement of the item, all at ASTi’s risk and expense. If the buyer does not require correction or replacement of nonconforming or defective items, ASTi shall repay such portion of the contract price or such additional amount as is equitable under the circumstances.

Warranty period: 12 months from shipment date