Secure Digital Intercommunication(SDI) System

"We required a proven, reliable kernel to support our mission critical application and the Nucleus PLUS kernel met all of our needs." --Steve Esposito, Vice President Business Development, Telephonics

Nucleus PLUS: Powering Telephonics' Aviation Communication System

Telephonics Corporation is a worldwide leader in integrated information and communication systems. Since entering the electronics industry in 1933, Telephonics has grown into a broad based, advanced technology company. Today, Telephonics continues to expand its business base by applying the technical know-how of its original defense communication and radar technologies to new electronic systems and products for a wide range of commercial and international customers.

Secure Digital Intercommunication (SDI) System

Telephonics newest intercommunication system, Secure Digital Intercommunication (SDI), is a fully digital/open architecture system with modular, scaleable configurations. SDI is designed for fixed wing aircraft, helicopters and ground shelter applications; providing high quality audio and secure communications capability - specifically designed to meet the customer's future requirements and offer additional value to their programs.

Nucleus PLUS Selected for the SDI in the Gripen Fighter

At Telephonics, developers wanted a real-time kernel that had a proven reputation in the performance-critical market. Purchasing a kernel provided with source code and without royalty fees was important as well. After researching the RTOS market, Telephonics decided on Mentor Graphics' Nucleus PLUS real-time kernel for implementation in the SDI product.

The Nucleus PLUS kernel is part of the basis of the secure digital intercommunication system, or SDI, the advanced communication system for the Swedish Air Force Gripen Fighter. The Nucleus PLUS kernel is programmed into the audio management system (AMS), which constitutes an integral part of the communication system for the Gripen Aircraft.

The AMS consists of one audio management unit (AMU) and one audio control panel (ACP) for a single seat aircraft and one AMU and two ACPs for a dual seat aircraft. The operational flight program (OFP), in conjunction with the Nucleus PLUS kernel, performs the following: Provide control for Normal and Back-Up modes; back-up control of the V/UHF radios in the event of loss of the primary control of the radios; provide intercom between Pilot, rear seat and crew operators; generate and distribute warnings, tones and speech messages to the pilot; distribute received audio and signals to the pilot; and provide channel to channel security isolation for operation of secure communications.

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