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Key Features

  • AAE Sigma 3 digital protocol
  • Digital depth telemetry
  • 8 target tracking
  • Waypoint logging function
  • 3% slant range accuracy
  • Customisable user interface
  • External heading & GNSS input
  • USB or network interface
  • NMEA outputs

Applications

  • Underwater survey and inspection
  • Cable and pipeline route surveys
  • Nearshore construction and salvage
  • Marine archaeology

Technical Specification

Easytrak Vesta Console Model EZT-2666

Dimensions
260 x 90 x 250(268) mm. W x H x D
Weight
2.6kg approx
Power requirements
18-24VDC (60W)
PSU Input: 90Vac – 230Vac 47-63Hz typically 2A
Connection to transceiver
Rear panel connector for ETM-904C Transducer using DC-20
Temperature
Operating: -10° to +40°C
Storage: -20° to +50°C
Front panel indicators
LED indicators for power and system status
Communications
1 x RJ45 Ethernet
1 x USB
2 x Console RS-232
INTERNAL GPS / DGPS
33 tracking/ 66 acquisition-channel GPS receiver
<2m 2DRMS, SBAS (WAAS, EGNOS, MSAS.) corrected
Data Output
RS-232 Serial or UDP
Data Format
AAE format V1, Kongsberg $PSIMSSB, Pseudo $GPRMC, Pseudo $GPGGA, NMEA $GPGGA, NMEA $GPVTG, NMEA $GPTLL
Compass Input
NMEA HDT, HDM
GPS / DGPS Input
NMEA; GGA, RMC
Number of Targets
8 Transponder / 1 Responder
Responder Output
Positive 12V pulse 10ms long
Interrogation rate
1 – 10s update, sequential, rate set per target (1s interval)
Channels
Sigma 1
Sigma 3
AAE Tone
HPR400

Easytrak Transducer Model ETM-904C

Factory calibrated multi-element transceiver head complete with integral AHRS, depth sensor and temperature sensor.

ETM 904C
Material
Stainless steel standard
Weight in air/water
3.94kg / ~3kg
Dimensions
78.5mm Ø x 291mm
Temperature
Operating: -5° to +30°C
Storage: -5° to +45°C
Depth rating
30m
Elements
4 receive / 1 transmit
Slant Range Resolution
10cm
Position Accuracy
2.0° RMS, 3.0% of slant range. Excluding effects due to GPS error, incorrect VOS, ray bending, compass, pitch and roll effects, and acceptable S/N ratio
Transducer
MF frequency band
Transducer beam pattern
Hemispherical
Interrogate SPL
Typically 186 re. 1µPa@1m
Heading Sensor Accuracy
<0.5° RMS
Tilt Sensor Accuracy
Accuracy ± <1.0° RMS
Range ± 80°

Accuracy / Performance

Accuracy is based on the correct speed of sound being entered, no ray bending and an acceptable S/N ratio.

Position Accuracy
2.0° RMS, 3.0% of slant range. Excluding effects due to GPS error, incorrect VOS, ray bending, AHRS and acceptable S/N ratio
Range resolution
Calculated to 10cm resolution
Frequency band (MF)
18 – 32 kHz
Tracking beam pattern
180°
Transmitter
186dB re 1µPa at 1m
Integrated AHRS:
Heading sensor 0.5° rms
Pitch/Roll sensor +/- <1.0° rms
Beacon types
AAE Sigma 1, Sigma 3 Digital Spread Spectrum and AAE Tone channels. HPR400 channels
AAE 1000, 1100, 1300A Series Beacons. Digital Depth Transponders

Transceiver Cable

System Externally assessed for immunity and emissions; conforms to 89/336/EEC. RoHS compliant

Diameter
12.8 mm nominal
Length
20m
Colour
Yellow – Connectors Supplied
SWL
20 kg (Allows Transceiver to be deployed from cable)

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