MMFU SCOE
The MMFU SCOE is a complex mix of hardware and software components aimed to perform both the electrical and software integration, and the functional testing of a satellite Mass Memory and Formatting Unit (MMFU).

House-Keeping and science telemetry data from the satellite are recorded in the MMFU to be transmitted to ground via X Band, and Ka Band subsystems.

The X Band subsystem provides a Direct Data Broadcast (DDB) permanent service through a single radio frequency (RF) link, whereas the Ka Band subsystem provides a Stored Mission Data (SMD) intermittent service through two RF links.

During the Assembly, Integration and Test (AIT) phase, a payload Electrical Ground Support Equipment (EGSE) receives the RF data, demodulate it, and forward it to the MMFU SCOE for recording and post-processing.

In charge of data distribution to the instrument EGSE, the MMFU SCOE can be operated remotely by a Central Checkout System (CCS), or locally via the MMI for configuration, maintenance and test debugging. 

Activities
Added value services
Markets
Key points
First SCOE dedicated to a Mass Memory Unit testing
High-performance FPGA-based implementation
Parallelized data acquisition and processing
Local MMI with intuitive and friendly graphical user interface

Key figures

3
units assembled for Airbus Defence and Space
70Mhz (Ka)
Demultiplexers bandwidth up to 70Mhz (Ka), and 23.325MHz (X
480Mbps
Useful data rate up to 480Mbps (SMD), and 80Mbps (DDB) excluding formatting and coding