... etc, especially for long time unattended testing System consists of data acquisition device, zero time receiver and built-in geophone. ... lower than 1μVPDA or laptop computer operationIndustrial CF card data storage, safe and reliableSmall-sized, water-proof, shock-proof, anti ... before lithium cell, voltage after lithium cell, sampling point data.Length of Data File Name, 8-Bit: The first 6 digits ...