EA400

For accurate surveying - Replaced by EA440

In addition to regular depth sounding the EA 400 hydrographic echosounder can now be employed for side looking sonar surveying. One or two 120kHz or 200kHz side looking transducers, mounted on a pole or on the side of the keel, may be utilized for excellent and accurate surveying of harbours or other relatively shallow areas.

Kongsberg Discovery

Horten, NO

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Description

The EA400 is replaced by the EA440. For more information about the EA440 click here.

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Specifications

General: Year of initial development

2015

Max. power consumption [W]

75

Min. external DC power [V]

12

Max. external DC power [V]

15

System integration: Remote operation capability

Y

Supported external data inputs

heave, position, tide

Marking of events and other annotations

Y

Real-time sound velocity and temperature profile inclusion

Y

Real-time coupling to survey/post-processing software

Y

Data displayed in real time

Depth; along-track slope; second layer detection with high/low frequency

Mode of operation: Software platform

Tablet PC, Windows Mobile, Windows Vista, Windows XP, Other

Min. depth of operation [m]

1

Max. depth of operation [m]

3000

Min. frequency [kHz]

10

Max. frequency [kHz]

500

Number of simultaneous frequencies

8

Min. power output [W]

10

Max. power output [W]

1000

Depth resolution [m]

0.01

Max. sounding rate [Hz]

30

Ping Rate

Maximum 40 per second

Pulse lengths and maximum resolution

500 kHz: CW 32 to 512 µs, FM, accuracy: 0.3 cm • 200 kHz: CW 64 to 1024 µs, accuracy: 0.6 cm • 38 kHz: CW 256 to 4096 µs, accuracy: 2.4 cm • 15 kHz: CW 512 to 8192 µs, accuracy: 4.9 cm • 10 kHz: CW: 1 to 16 ms, accuracy: 9.8 cm

Other specifications: Internal data logging details

HDD

Main use of the system

Hydrographic surveys, sub-bottom profiler, fishery research. Can be used with side scan sonar and sub-bottom profiler transducers. Up to 8 channels can be acquired simultaneously.