NETWORK PRODUCTS DIVISION
Network Products > Use Cases > High-Speed Data Recording
High-Speed Data Recording Use Case
The customer required data acquisition and recording from a wide variety of sensors and interfaces. Signals included sensor inputs from IEEE 1394 FireWire and Optical Fibre Channel (oFC) devices. Ruggedization specifications were consistent with airborne use under extreme conditions. Centralized programming of the Data Acquisition Units (DAUs) from the ground station was required. Output data to recording systems would conform to the IRIG-106 Chapter 10 standard.
TTC supplied the customer with a tested array of DAUs, module firmware, and data management software synchronized using the IRIG-B standard for time tagging. Single point programming is accomplished from a ground station panel connected to an Airborne Instrumentation Controller (AIC) master by RS-232/422 serial cable. Remote High-Speed Avionics Data Acquisition Units (HS-AVDAUs) and an Airborne Instrumentation Multiplexer (AIM) unit acquire programming via the CAIS bus and PCM input. HS-AVDAUs acquire messages from a variety of FireWire and Fibre Channel devices at 400 Mbps and 2 Gbps, respectively. They output encoded data to the AIM for recording.
The AIM unit multiplexes the acquired input data into Chapter 10-compliant data packets. The single high-speed data transport stream is carried over 1.0625 Gbps electrical fibre channels for recording on TTC's Chapter 10-compliant recording system. Data can also be transmitted to the ground station via electrical fibre channel.