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Key Features

  • Accurate and stable
  • Easy and intuitive to operate
  • Software options include geo-referenced graphical overlay
  • High performance, cost-effective

Applications

  • Underwater survey and inspection
  • Subsea construction sites
  • Cable and pipeline route surveys
  • Hydro-graphical and geotechnical surveys
  • Nearshore construction and salvage

Technical Specification

EASYTRAK NEXUS LITE CONSOLE, MODEL EZT-2695

provides DC power, high speed digital communications to the transceiver with a USB interface to user PC running Easytrak Nexus Lite software.

Dimensions
1U, 254 x 54 x 260mm
Weight
1.0kg
Power requirements
48Vdc / Vac Adapter Input: 90Vac – 230Vac 47-63Hz typically 3A
Connection to Transceiver
Rear-panel connector for EZT-2686 Transceiver
Temperature
Operating: -10° to +40°C
Storage: -20° TO +50°C
Front panel indicators
LED indicators for power and serial status.
Serial communications
4 x Console RS-232 Data Ports. System utilises PC ports if available
Data Output
AAE format V1 and V2, TP-II2EC, TP-EC W/PR, Simrad 300P,
Simrad 309, Simrad $PSIMSSB, Pseudo $GPRMC, NMEA
$GPGGA, NMEA $GPVTG, NMEA $GPTLL, Pseudo
$GPGGA, KLEIN 3000 (Quick set) Multiple outputs available
Compass Input S
SGB-HTDS, SGB-HTDt, NMEA HDT,HDM, HDG
VRU Input
TCM-2.X, $HCXDR , TSS1
Calibration
Optional EasyCal 2 USBL Calibration tool.
GPS / DGPS Input
NMEA; GLL, GGA, RMC
Optional Geo Referenced Graphical Overlay. GeoTiff, DXF
Target Heading Input
NMEA HDM, HDT, HDG, PNI TCM2
Target Depth Input
NMEA DBT, DBK, DBS, DPT, AAE
Time in
GPS Time synch
Responder Output
Positive 12V pulse 5ms long
Audio
Audible activity indicator

EASYTRAK TRANSCEIVER, TYPE EZT-2683

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

EZT-2683
Material
316 Stainless Steel
Weight in air/water
11kg/8.5kg
Dimensions
100mm x 500mm (Ø x L)
Temperature
Operating: -10° to +40°C
Storage: -20° to +50°C
Depth rating
30m
Electrical supply
48Vdc
Temperature sensor
1° resolution between -10° and +40° C
Cable
30m standard (20-100m options) with connectors. 12.8mm Ø

Accuracy/performance

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

Position accuracy
1.0% of slant range, with external sensors
Acoustic accuracy excluding heading correction errors
Range resolution
Calculated to 0.1m resolution
Frequency band (MF)
18 – 30 kHz
Tracking beam pattern
Hemispherical, 180°
Transmitter
190dB re 1µPa at 1m
Integrated AHRS:
Bearing resolution : 0.1° displayed. Internally calculated to 0.01°
Heading sensor accuracy : 0.8° rms standard; +/- 0.1° resolution/repeatability
Pitch/Roll sensor accuracy : +/- 0.20° rms +/- 0.1° resolution/repeatability
Beacon types
AAE Sigma 1 Digital Spread Spectrum and AAE Tone channels. AAE
V-NAV channels. HPR 400 channels
1100, 1000, 1200A, 1300A Series Beacons, Digital Depth
Transponders, AAE Release and Telemetry Beacons.
Interrogation rate
Internally set or external key
System
Externally assessed for immunity and emissions; conforms to
89/336/EEC. RoHS compliant

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