PCIe DAQ boards have >160 dB dynamic range

摘要

Based on a novel heterodyne trigger and a 32-bit Xilinx FPGA averaging engine with near-zero dead-time, the two-channel ULTRADYNE16-50MxVE-8GB-50T/155T and four channel ULTRADYNE16-250x4AVE-8GB-50T/155T can capture repetitive signals as low as 10 nV at a 250-maegsample/s rate over a 160 dB dynamic range from dc to 400 MHz. The PCIe boards, which can average repetitive signal strings up to 1 million times with record lengths to 16,384 samples (-50T models) and 262,144 samples (-155T models) uninterruptedly, are intended for demanding scientific, military and medical applications where repetitive signals on multiple time-aligned channels need to be observed with high SNR.