Test Mass (TM) Sensing & Actuation Electronics (SAE) - 2005

The TM SAE is designed during the LTP mission from ESA. It mainly includes 4 Sensing and Actuation Printed Circuit Boards (SA PCBs), 1 Control PCB and internal wiring.

The main function of the TM SAE are as follows:
[1] Sensing of TM position between its electrodes along eight axis of freedom (three in translation, three in rotation and two spare)
[2] Electrostatic actuation of TM via sixteen electrodes
[3] Generates necessary TM injection AC voltage to perform sensing function
[4] Generates special intermittent AC waveforms to perform actuation function
[5] Compatible with both 12 and 14 electrode design of the TM electrode housing (EH)