Nexus 2, Model 2692
The Nexus 2 is the second generation of Easytrak digital USBL systems designed as a highly advanced positioning and tracking system that is quick to deploy and straightforward to operate.
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Key Features
- Bi-directional Sigma 2 spread spectrum acoustics
- Optimised beacon refresh rate
- 16 target tracking
- Geographical navigation overlays
- EasyCal 2 embedded calibration tool with AutoCal Wizard
- With 1100, MiQ data telemetry, Multi-Fire common interrogate
- Sound velocity profile upload facility
Applications
- UXO survey positioning
- Long range tracking
- Launch & Recovery operations
- AUV/ ROV tracking
- Long layback operations
- Diver tracking
Technical Specification
Console Overview
Nexus 2 console, model EZT-2692, provides DC power, high speed digital communications to the transceiver with an embedded graphical navigation interface. Supplied with monitor, keyboard and mouse.
Physical
Dimensions
19” Rack mount. 2U, 482 x 88 x 345mm
Weight
5.4kg
Power requirements
90 to 250 Vac at 250 VA maximum
Connection to transceiver
Rear panel connector
Built-in PC
Industrial i3 board running embedded Win 7, 32GB HD
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 RS-232 External Input Port. 3 x Data Out Ports
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
SGB-HTDS, SGB-HTDt, NMEA HDT,HDM, HDG
VRU Input
TCM-2.X, $HCXDR , TSS1
GPS / DGPS Input
NMEA; GLL, GGA, RMC
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
USB
6 ports available, 2 on front panel
Ethernet
2 x 1Gbps standard RJ45 jack. Ethernet UDP Data Port
Audio
Audible activity indicator
Transceiver Overview
Transceivers EZT-2782 and EZT-2780 are factory calibrated multi-element transceiver heads complete with integral AHRS, depth sensor and temperature sensors.
Physical
EZT-2782
EZT-2780
Material
Stainless steel
Stainless steel
Weight in air/water
16kg/11kg
21kg/15kg
Dimensions
200mm Ø x 432mm
200mm Ø x 432mm
Temperature
Operating: -10° to +40°C
Operating: -10° to +40°C
Storage: -20° to +50°C
Storage: -20° to +50°C
Depth rating
30m
30m
Electrical supply
48Vdc
48Vdc
Depth sensor (Pressure Sensor)
5 bar, accuracy 0.25% between -10° to +40°C
5 bar, accuracy 0.25% between -10° to +40°C
Temperature sensor
1° resolution between -10° and +40°C
1° resolution between -10° and +40°C
Cable length
Max 150m
Max 150m
Accuracy/performance
Accuracy is based on the correct speed of sound being entered, no ray bending and an acceptable S/N ratio.
EZT-2782
EZT-2780
Frequency band (MF)
18 – 32 kHz
18 – 32 kHz
Tracking beam pattern
180°
170° calibrated acoustic coverage, optimum performance within 150°
Transmitter
Variable, typical max 192dB re 1μPa at 1m
Variable, typical max 192dB re 1μPa at 1m
Compatible transponders
aae Sigma 1, Sigma 2 Digital Spread Spectrum and aae Tone
aae Sigma 1, Sigma 2 Digital Spread Spectrum and aae Tone
channels, aae V-NAV channels, HPR 400 channels
channels, aae V-NAV channels, HPR 400 channels
1100, 1000, 1200A, 1300A series beacons, Digital Depth
1100, 1000, 1200A, 1300A series beacons, Digital Depth
Transponders, aae Release and Telemetry Beacons
Transponders, aae Release and Telemetry Beacons
Interrogation rate
>2Hz refresh rate. Internally set or external key
>2Hz refresh rate. Internally set or external key
System
Externally assessed for immunity and emissions; conforms to
Externally assessed for immunity and emissions; conforms to
89/336/EEC. RoHS compliant
89/336/EEC. RoHS compliant
Transceiver performance
Accuracy is based on the correct speed of sound being entered, no ray bending and an acceptable S/N ratio. Position repeatability, calibrated and measured with SNR > 20 db rel. 1μPa in a controlled test environment.
EZT-2782-N
EZT-2782-C
EZT-2780-N
EZT-2780-C
Console
EZT-2692
EZT-2692
EZT-2692
EZT-2692
Beam
pattern
180°
180°
170°
170°
Acoustic
precision
degrees
0.14° DRMS
0.14° DRMS
0.07° DRMS
0.07° DRMS
Acoustic
% slant
range
0.25%
0.25%
0.12%
0.12%
Internal
AHRS
precision
0.5°
0.5°
0.5°
0.5°
Acoustic
+
internal
AHRS %
1.30%
1.30%
1.17%
1.17%
Acoustic
+
external
AHRS %
0.25%
0.25%
0.12%
0.12%
Max
range
995m
2000m
995m
3000m
Range
resolution
0.01m
0.01m
0.01m
0.01m
UK
Export
control
No
Yes
No
Yes
aae technologies
