eMDee Technology, Inc.

eMDee Technology, Inc.
Light Vehicle Simulated Communications and Radio System Example

This example shows a typical setup for a simulated VIC-3 communications system for a light tactical vehicle such as a HMMWV. The system uses our simulated FFCS/L headset interface boxes and simulated SINCGARS radio. Each FFCS/L interface box can accommodate two headsets so a system such as this can be used for up to four crew members.

The system is a simple setup of USB I/O and line-level audio. Digital I/O from the simulated components is interfaced to the system software through a standard USB 2.0 connection. Switch settings, button presses, and display information is sent and received through USB. Audio signals are amplified to/from tactical headsets to line-level signals compatible with most audio equipment and PC sound cards. This system uses a multi-channel sound card called the Layla3G that provides a standard audio interface for the software and routing/mixing capabilities for near-zero latency between headsets in the same system.

FFCS/L System Example

Standard Windows PC running VIC-3/L software

(Click for more info)
Layla 3G 8-channel audio interface from Echo Audio
Standard off-the-shelf
USB 2.0 hub

Simulated FFCS/L Intercom Box
for connecting headsets and
for talk/listen control

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Simulated Dual ASIP SINCGARS radio
for setting frequencies, radio modes, etc.

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Tactical headset compatibility
with Bose Tri-Port headset
and other types

VIC-3 Light Vehicle Block Diagram
(mouse over image for more details)


Connecting the whole system together is our Windows-based software that simulates a VIC-3/L communications system. The software monitors the switch settings of the FFCS/L interface boxes to set the mixing/routing structure of the Layla3G. It also monitors the SIMGARS simulated radio switch settings and button presses to set the parameters for the virtual radios in the software. The LCD displays on the SIMGARS radios are updated through a simple USB interface to simulate the look-and-feel of the tactical SINCGARS radio. And when the system is setup properly and a user presses their radio push-to-talk switch, the software samples the voice from the headset, encodes it to a standardized simulation protocol, and sends it out over the network. Likewise, when simulation protocol data is received, the software decodes the voice data and sends it to any and all users who are configured to receive it.

The software for this system is based on our DisComm Technology for radio networking and simulation. Connect multiple systems together to simulate a convoy of vehicles or connect this system to a DIS/HLA network to inter-operate and communicate with other training devices.