FGM Schedule HansUlrich Auster Institut fr Geophysik und

FGM Schedule Hans-Ulrich Auster Institut für Geophysik und Meteorologie TU-Braunschweig FGM peer CDR Schedule - 1 Berlin, April 6, 2004

Sub-units • • FGS: Flux. Gate Sensor FGE: Flux. Gate Electronics Models • • BBM: Bread Board Model (FGE-BBM) STM: Structural and Thermal Model (FGS-STM) ETU: Engineering and Testing Unit (FGE-ETU 1/2) FM: Flight Model (FGS-F 1/F 6 and FGE-F 1/F 5) Locations • • • US-Berkeley (UCB) US-Swales E-Braunschweig (TU-BS) E-Graz (IWF) E-Berlin (Magson) FGM peer CDR Schedule - 2 Berlin, April 6, 2004

FGS See sensor presentation FGM peer CDR Schedule - 3 Berlin, April 6, 2004

FGE ETU-1 pending ETU-2 in time FGM peer CDR Schedule - 4 Berlin, April 6, 2004

FGE FM … FGM peer CDR Schedule - 5 Berlin, April 6, 2004

Summary • Basic Functions as well as all magnetometer relevant parameters are tested with Venus Express Magnetometer • • • Identical sensor 90% identical electronics (all active parts) Interface is tested with BB-FGE and Austrian GSE • Available at Magson • FPGA permanently under development • FGS in time • ETU’s status deviates from original plan • FGE FM’s: no showstoppers visible FGM peer CDR Schedule - 6 Berlin, April 6, 2004

S/C I&T FGM Sensor configuration during S/C I&T Level 0 - without sensor • • B-field about zero if FGM in Cal Mode (preferred mode) B-field saturated if feedback is closed Interface full functional Power consumption reduced by 200 m. W Level 1 - Sensor in Mu-metal cup • • B-field about 10. 000 n. T, Noise about 1 n. T Full functionality, but B-field value not representative Level 2 - Sensor in TCU with extended harness • • • B-field < 10 n. T, Noise <10 p. T/sqrt(Hz) B-field has to be available in full quality Delta in calibration coefficients known FGM peer CDR Schedule - 7 Berlin, April 6, 2004