ES90 Dual-Freq 50/200kHz
Simrad ES90 Dual-Freq 50/200kHz is identified in the source list as a marine echo sounder. It is installed on the bridge and at the associated antenna, transducer, camera or sensor location, with data distributed to connected ship systems as required. Its purpose is to measure water depth beneath the vessel using an acoustic transducer and bridge display. The source record provides no additional model-specific operating figure beyond the listed designation and category. The exact sensor set, recording functions, data interfaces, approval status and redundancy depend on the installed model. The exact model designation distinguishes sensing, recording or communication capability from neighboring bridge equipment; refer to the manufacturer documentation for the exact figure.
Components & Design
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Technical Data
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Common failures & inspection points
Service & Maintenance
Inspect sensors, antennas, transducers, cameras, cabling, power supplies and network interfaces applicable to the installed equipment. Compare displayed information with independent references where possible and investigate recurring alarms or missing channels. Verify required outputs to other bridge systems and preserve configuration before approved software or hardware maintenance. Clean exposed sensors and optical surfaces without damaging coatings or seals. Check backup power or recording arrangements where applicable. Refer to the manufacturer documentation for the exact figure for test, calibration, update and recovery procedures.
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