PCB 382.064031.8 FIB FILTER BOARD FOR SIMRAD HPR-309
PCB 382.064031.8 is rack plug-in marine fibre filter printed circuit board, designed for Simrad HPR-309 hydroacoustic USBL underwater positioning system, widely fitted onboard offshore vessels, survey ships and dynamic positioning platforms for acoustic signal filtering and noise suppression. This marine FIB filter board acts as signal conditioning card for HPR-309 transceiver rack, filtering out electrical interference and background noise from received hydroacoustic signals, improving signal-to-noise ratio for underwater beacon position measurement. The marine filter PCB integrates high frequency signal filtering circuit, surge protection, signal isolation and watchdog monitoring, cleans acoustic return signals before forwarding to the main HPR-309 processing unit for subsea target calculation. Its acoustic signal filtering & hardware diagnostics function continuously monitors 24V DC power supply, field transducer wiring and backplane bus integrity, detects signal loss, noise interference and hardware abnormality, transmits filter board fault alerts and measurement status to vessel AMS alarm console. The acoustic signal filtering & hardware diagnostics ensures clean and reliable acoustic signal reception for marine Simrad HPR-309 underwater positioning system. It enables reliable marine 382.064031.8 filter board operation under heavy vessel vibration and salt mist marine environments.

This Simrad 382.064031.8 FIB filter board delivers stable marine fibre filter printed circuit board performance installed inside vessel hydroacoustic positioning control cabinet. The acoustic signal filtering & hardware diagnostics adopts marine-grade PCB substrate with EMC shielding against electromagnetic interference and mechanical shock. Marine hydrographic technicians rely on marine filter board operation to verify filtered signal output, test noise rejection and inspect card status during routine maintenance. It adopts rack edge connector plug-in design for straightforward spare replacement and minimal marine underwater positioning system downtime. Internal circuit boards use conformal coating to protect electronic components against salt mist, condensation and temperature fluctuation. It works cooperatively with HPR-309 main transceiver unit, hydroacoustic transducer and ship integrated alarm monitoring system. It is widely used as signal filter spare hardware for Simrad marine USBL underwater acoustic positioning control system maintenance and retrofit projects.