ats4dATS CM4D helps manufacturers to gain real value from their dimensional data, gathered from all sources, in all formats. Whether you’re comparing your product to the orinal desn, findingThe ATS4D from CAES is a RF Variable Attenuator with Frequency 2 to 4 GHz, Attenuation Range 60 dB, Insertion Loss 2.5 dB, Supply Voltage 5 V. Tags: Module with Connectors,