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ASTi Interface - Single (AI-S)

Latest Firmware Version: v2.3

Technical User Guide

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

View Guide

The AI-S is a compact audio and I/O distribution device that connects remotely located operator headsets, speakers, control panels and other peripherals to a central Voisus server via ethernet.

A comprehensive overview of the AI-S can be found in the Technical User Guide

General Specifications

Compatible with Voisus
Dimensions 4.860" length x 2.965" width x 1.17" height
Weight A packaged AI-S weighs 5oz.
Power Source Ethernet Port via Power over Ethernet (PoE).
Power Consumption 10w @ 56VDC
Mean Time Between Failure (MTBF) 1,970,288.06 hours

Audio Input/Output

Audio Input

Impedance 4.6k
Level 3.25 Vpp max (6.5 Vpp differential)
Gain 0dB, +9dB to +60dB, software configurable*

* The AI-S gain covers a total gain range of 60dB. The range 9dB to 60dB can be set in 3dB steps. The range 0dB to 9dB cannot be selected as a function of design.

Audio Output

Output Power 150 mW per Channel at 16Ω
Max. Output Signal 5 Vpp

Memory Devices


MCU Internal SRAM 96kB SRAM


MCU Internal 512kB


Serial Connections

RJ-12 Pinout for RS-422 Mode

RJ-12 Pinout for RS-232 Mode

Audio Interface

DB-15 Connector


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