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ASTi Interface - Delta (AI-Delta)

Latest Firmware Version: v2.0.0

Technical User Guide

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

View Guide

The ASTi Interface – Delta (AI-Delta) is a compact audio and I/O distribution device that connects local or remote operator headsets, speakers, control panels, and other peripherals to the network via Ethernet.

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

General Specifications

Compatible with Voisus, SERA
Dimensions 6.56"L x 4.18"W x 1.33"H
Weight A packaged AI-Delta weighs 14oz.
Power Source Ethernet port via Power over Ethernet (PoE) IEEE 802.3af
Power Consumption < 12.5 w @ 56 VDC
Mean Time Between Failure (MTBF) 32,552.67 hours (COTS)
27,150.44 hours (MIL)

Audio Input/Output

Audio Input

Impedance 1.65 kΩ
Level 4.5 Vpp max (2.2 Vpp differential)
Gain 0 dB, +10 dB to +65 dB, software configurable*

* The AI-Delta gain covers a total range of 65 dB. You can set the range of +10 dB to +65 dB in 1 dB steps; however, you cannot select the range 1dB to +9 dB as a function of design.

Audio Output

Impedance 10 Ω
Max. power 150 mW at 32 Ω
Max. Output Signal 3.75 Vpp at 150 Ω
2.4 Vpp at 8 Ω
Frequency response 20 Hz to 20 kHz

Ports, Protocols, and Services

The AI-Delta requires the following ports, protocols, and services:

Port Protocol Service
8000 TCP HTTPS server for device configuration
68 UDP DHCP client port (bootpc)
9990 UDP Device detection multicast port
63001 UDP Voisnet control packets port
63002 UDP Voisnet audio packets port

Memory Devices


Type Size User Modifiable Function Process to Clear
CPU internal cache 512 KB No Internal cache for CPU Remove Power
Count to 30
Restore Power
Internal cache 128 KB No Internal cache Remove Power
Count to 30
Restore Power
RAM 1 GB No RAM Remove Power
Count to 30
Restore Power


Type Size User Modifiable Function Process to Clear
eMMC 4 GB Yes Application Contact ASTi


Audio Interface

DB-15 Connector


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