| http://www.w3.org/ns/prov#value | - The low pass filter 19 receives +PC ON signal fed to a terminal 156, the +LS signal fed to a terminal 43 and the output signals from the preamplifier 18, i.e. two outputs from a 2-input, 2-output type operational amplifier 155, and outputs LPF+ and LPF- signals at output terminals 189 and 190.
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