B08_Atch_1_Salient_Characteristics_6July2022.pdf

SALIENT CHARACTERISTICS FOR EDGETECH 4125i OR EQUAL

- The following are salient characteristics for the towfish and cable

Must provide simultaneous, dual frequency operation at 600 kHz and 1600 kHz and at different operator-selected range scales

Must include CHIRP and CW pulses Must include a shear pin break-away mechanism Must provide a maximum usable operating range of at least 120 m perside at 600 kHz and

35m per side at 1600 kHz Must provide across track resolution of 2.3 cm or better at 600 kHz and 0.6cm or better at

1600 kHz Vertical beam angle must be 50 degrees Must be constructed of 316 stainless steel Weight cannot exceed 20 kg (44 lbs) Length cannot exceed 112 cm (44”) Must have a depth rating of at least 200 meters Heading, pitch, roll and depth sensors must be standard Must be delivered in rugged, portable case with wheels for ease of transport Tow cable must be a single 50 ohm coax-type cable available in lengths from 50 m to 100 m

- The following are salient characteristics for the sonar acquisition and display software:

Must have target zoom and analysis tools Must have navigation display that can setup survey lines Must provide indicators for towfish altitude and pitch/roll Must be able to import and display GeoTiff’s, BSB, & ENC charts together as multiple background map layers Must produce JSF and XTF files for post-processing playback Must have left and right line steering indicator to aid in steering survey lines Must have 24-hour emergency technical support Must produce files compatible with EdgeTech Discover software

- The following are salient characteristics for the topside processor:

Electronics must be housed in a rugged splash‐proof enclosure Electronics must be able to operate from 110‐220 VAC or 12‐24 VDC power source directly without the need for an external power inverter Must include a ruggedized laptop computer with glare-proof screen and

Windows operating system Must connect to computer wirelessly or via ethernet connection Must interface with global positioning system via USB connection Weight should not exceed 10 kg (22lbs)