Fig. 5From: First in-orbit results of the vector magnetic field measurement of the High Precision Magnetometer onboard the China Seismo-Electromagnetic SatelliteCDSM block diagram. A/D analog-to-digital conversion, D/A digital-to-analog conversion, DDS direct digital synthesis, FPGA field programmable gate array, H/K housekeeping, PWM pulse-width-modulation, Rb rubidium, TEC thermo-electric-cooler, VCSEL vertical cavity surface emitting laserBack to article page