  We have built a high precision (24-bit) data acquisition (DAQ) system with
eight simultaneously sampling input channels for the measurement of the
electric dipole moment (EDM) of the electron. The DAQ system consists of two
main components, a master board and eight individual analog-to-digital
converter (ADC) boards. This custom DAQ system provides galvanic isolation,
with fiber optic communication, between the master board and each ADC board to
reduce the possibility of ground loop pickups. In addition, each ADC board is
enclosed in its own heavy-duty radio frequency shielding enclosure and powered
by DC batteries, to attain the ultimate low levels of channel cross-talk. In
this paper, we describe the implementation of the DAQ system and scrutinize its
performance.
