... (simultaneous) A, C, Z. Realized by digital filtering11Time WeightingParallel F, S, I, Peak C+, Peak C-12A/D Bits24 bits13Level ... , LAIeqTNote: X is A, C, Z and Y is F, S, I18Main Parameters of Airport Noise MeasLEPN,Td,Lmax19Display Resolution0 ... Connector AC Signal OutputRS 232 interface to the mini-printer, or connected to PCUSB Interface, which can transfer the measuring results to PC, or ...