Wassp DRX User manual

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DRX INSTALLATION MANUALDRX INSTALLATION MANUAL
GENERAL NOTICES
WASSP Ltd. reserves the right to change the contents of this manual and any system
specifications without notice.
Contact WASSP Ltd. regarding copying or reproducing this manual.
SAFETY NOTICES
The installer of the equipment is solely responsible for the correct installation of the
equipment. WASSP Ltd. holds no responsibility for any damage associated with incorrect
installation.
ELECTRICAL SAFETY
»Fire, electrical shock, or equipment damage may occur if the transceiver comes into
contact with liquid.
»The DRX is rated for operation at 9-32 V DC or 18-32 V DC model dependent.
»Make sure that the power is switched OFF at the main supply (e.g. switchboard)
before beginning the installation. Fire or electrical shock may occur if the power is
left ON.
»Do not open or access equipment covers unless you have had DRX service training
and are cognisant with the system’s electrical circuits.
»Make sure all safety precautions for electrical equipment are taken when operating
or servicing the equipment. These are to be carried out in accordance with local or
national regulatory body safety regulations.
»Make sure that the DRX is secure and will not loosen due to the vessels vibration.
SUPPORT INFORMATION
For details on Registration, Support and Resources see “Appendix I - Product Registration,
Support and Resources” on page 101.
WARNINGS, CAUTIONS AND NOTES
Warnings, cautions, and notes are indicated by the following icons throughout this
manual:
WARNING indicates that if the instruction is not heeded, the action may result
in loss of life or serious injury.
CAUTION indicates that if the instruction is not heeded, the action may result
in equipment damage or software corruption.
NOTE indicates a TIP or additional information that can be helpful while
performing a procedure.
WASSP DRX INSTALLATION MANUAL
This installation manual covers the following:
»DRX installation, configuration and operation.
»Sensor configuration and commissioning.
»Control and Display Application interfacing.
This manual does not cover installation and setup of external sensors. Refer to installation
and operation manuals for the specific sensors that are being used.
DRX Interconnect change history can be seen in “Appendix G - DRX Interconnect change
history” on page 98.
DOCUMENT REVISION HISTORY
REVISION DATE REASON FOR CHANGE VERSION
March 2016 Compilation. 1.0
June 2016 Corrected RS-422 pin-out. 1.1
July 2016 Connector and Setup Webpages. 2.0
November 2016 Various Notes. 2.1
June 2017 Update DRX to new conguration. 3.0
January 2018 Updates to Section 4 Operating the DRX and Section 5 Sensor Conguration. 4.0
March 2018 Update to AUX connector conguration. 4.1
April 2018 Update to DRX Interconnection. 4.2
June 2018 Updates to support DRX-46. 5.0
September 2018 Corrected RS422 labelling to industry standard, claried ship’s measurements and
reference point location. 5.1
April 2019 Technical Updates. 5.2
May 2019 Technical Updates. 6.0
December 2019 Update to fan connector conguration. 6.1
December 2020 Addition of RPM Processing for Survey and IP67 DRX. 7.0
January 2021 Update of Valeport sensor format. 7.1
RELATED DOCUMENTS
»WASSP DRX Installation Manual – For the latest version of this manual go to
wassp.com
»WASSP Transducer Installation Manual – Installation manual for specific transducers
supported by DRX.
»WASSP CDX Operators Manual – User manual for the WASSP CDX application for
control, visualisation and data post processing of DRX data.
»3rd Party Application Manuals – 3rd Party Applications that interface with DRX
»Sensor Installation and Operation Manuals – Sensors supported by DRX.
»WASSP DRX ICD – Interface documentation for DRX and associated DRX SDK/API
documentation.
»Sensor Box Installation Manual - Installation Manual for the WASSP Sensor package
Further documentation and updated specifications and DRX installation manual can be
found at wassp.com

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DRX INSTALLATION MANUALDRX INSTALLATION MANUAL
CONTENTS
1 INTRODUCTION 9
1.1. Main Features 10
2 SYSTEM OVERVIEW 11
2.1. Complete System 12
2.2. Recommended System 12
2.3. Survey System 13
3 INSTALLATION PROCEDURES 14
3.1. Installation Parts 15
3.2. Transducer 15
3.3. Locating the DRX System 15
3.4. Mounting the DRX 16
3.5. Connecting the DRX 18
3.5.1. Power Supply
3.5.2. Connectors and Components
3.5.3. Cables and Components
3.5.3.1. Cables and Components – Front Plate
3.5.3.2. Connectors and Components – Back Plate
3.6. Display and Control Devices 23
3.6.1. DRX Setup Webpages
3.6.2. DRX Client Applications
3.7. Electrical environment check 25
4 OPERATING THE DRX 26
4.1. Power 26
4.2. LED Status 26
4.2.1. Startup sequence.
4.2.2. Normal Operation LED Indications
4.3. System Update & Diagnostics 28
4.3.1. Diagnostics Information
4.4. System Restore 29
4.5. Network Configuration 30
4.6. System Features 31
5 SENSOR CONFIGURATION 34
5.1. Commissioning Step 1: Ship Measurements 34
5.2. Commissioning Step 2: Sensor Configuration 36
5.2.1. Presets Tab
5.2.1.1. Applying Presets
5.2.1.2. Saving Custom Presets
5.2.1.3. Downloading and Uploading Presets
5.2.2. Port Setup Tab
5.2.3. Sensor Tab
5.2.4. Data Setup Tab
5.2.5. Corrections Tab
5.2.6. Key Pulse Tab
5.2.6.1. Configuring Key Pulse Slave
5.2.6.2. Configuring Key Pulse Master
5.2.6.3. Configuring Key Pulse Blanking
5.2.6.4. Advanced Key Pulse
5.2.7. PPS Tab
5.2.8. Geoids Tab
5.2.8.1. Configuring Height Relative to the DRX Geoid File
5.2.8.2. Configuring Height Relative to the Internal GPS Geoid
5.3. Commissioning Step 3: On Water Patch Tests 50
5.3.1. GPS Time Delay
5.3.2. Roll Oset
5.3.3. Pitch Oset
5.3.4. Heading Oset
5.3.5. Patch Test Validation
6 RPM PROCESSING OPTION FOR SURVEY 57
6.1. DRX Connection setup 57
6.2. Acquisition software connection Setup 57
6.2.1. RPM Setup examples
6.2.1.1. CDX
6.2.2. NavAQ (BeamworX)
6.2.3. Naviscan (Eiva)
6.2.4. Qinsy (QPS)
6.2.5. Hypack
7 CONTROL AND DISPLAY APPLICATION SUPPORT 60
7.1. Connecting the WASSP CDX to the DRX 60
7.2. Connecting Maxsea TimeZero Plot to the DRX 62
7.3. Connecting HYPACK to the DRX 64
8 OUTLINE DRAWINGS 66
8.1. DRX-32 Outline Drawings 66
8.2. DRX-46 Outline Drawings 69
9 DRX INTERCONNECTION 73
9.1. DRX-32 Interconnection 73
9.2. DRX-46 Interconnection 74
10 TECHNICAL SPECIFICATIONS 75
11 APPENDIX 76

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DRX INSTALLATION MANUALDRX INSTALLATION MANUAL
APPENDIX
APPENDIX A CABLE DRAWINGS 76
Appendix A.1 Transducer Rx 76
Appendix A.2 Transducer Cable Restrainer 77
Appendix A.3 Transducer Tx 78
Appendix A.4 RS-232 79
Appendix A.5 RS-422-A 80
Appendix A.6 RS-422-B 81
Appendix A.7 NMEA 0183 82
Appendix A.8 Remote Power 83
Appendix A.9 KP1/KP2 In 84
Appendix A.10 KP1 Out 85
Appendix A.11 Power Connection 86
Appendix A.12 Ethernet 86
Appendix A.13 NMEA2K 87
Appendix A.14 FAN 87
APPENDIX B ASSEMBLY PROCEDURE FOR IP67 DRX
CONNECTION TO TRANSDUCER 88
APPENDIX C SUPPORTED SENSORS AND SENTENCES 92
APPENDIX D SHIP’S MEASUREMENT POINTS 94
Appendix D.1 Transducer Measurement Location 94
Appendix D.2 GPS Antenna Measurement Location 94
Appendix D.3 Motion Sensor Measurement Location 94
APPENDIX E SEA LEVEL HEIGHT USING GPS HEIGHT 95
Appendix E.1 Sea Level Height using DRX Geoid File 95
Appendix E.2 Sea Level Height using Internal GPS Geoid 95
Appendix E.3 Enabling GPS Height for Sea Level Height 96
APPENDIX F AUTO CONTROL IN CDX 97
APPENDIX G DRX INTERCONNECT CHANGE HISTORY 98
APPENDIX H GLOSSARY 99
APPENDIX I PRODUCT REGISTRATION, SUPPORT AND RESOURCES 101
FIGURES
Figure 1. Complete System 12
Figure 2. Recommended System 12
Figure 3. Survey System 13
Figure 4. DRX Bulkhead Mount 17
Figure 5. DRX Horizontal Mount 17
Figure 6. Front Plate 18
Figure 7. Back Plate 19
Figure 8. RX Cable Connection 20
Figure 9. Find My DRX App 24
Figure 10. Example of an Electrical Environment Check of an 80kHz install 25
Figure 11. Startup Sequence 26
Figure 12. Normal Operation LED Indications 27
Figure 13. System Upgrade 28
Figure 14. Restore Defaults Tab 30
Figure 15. System Features 31
Figure 16. License Status 32
Figure 17. Ship Measurements Diagram 35
Figure 18. DRX Setup, Port Setup Table 38
Figure 19. DRX Setup, Port Setup Tab with Sensor Data 38
Figure 20. DRX Setup, Sensor Tab 39
Figure 21. DRX Setup, Data Setup Tab 40
Figure 22. DRX Setup, Corrections Tab 41
Figure 23. DRX Setup, Key Pulse Tab 43
Figure 24. DRX Setup, PPS Tab 46
Figure 25. PPS Status 48
Figure 26. GPS Time Delay Stage 1 51
Figure 27. GPS Time Delay Stage 2 51
Figure 28. GPS Time Delay Stage 3 52
Figure 29. Manual Roll Patch Test 53
Figure 30. Measurement of Swath Width H 54
Figure 31. Pitch Corrections 55
Figure 32. DRX-32 Dimensions 66
Figure 33. DRX-32 Front Plate Dimensions 67
Figure 34. DRX-32 Back Plate Dimensions 68
Figure 35. DRX-46 Assembly 69
Figure 36. DRX-46 Front Plate Dimensions 70
Figure 37. DRX-46 Back Plate Dimensions 71
Figure 38. IP67 DRX Dimensions 72
Figure 39. DRX-32 Interconnection Diagram 73
Figure 40. DRX-46 Interconnection Diagram 74

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DRX INSTALLATION MANUALDRX INSTALLATION MANUAL
1 INTRODUCTION
The WASSP DRX is a ‘Black Box’ smart transceiver that interfaces to devices and sensors
to make up the WASSP Multibeam Sounder System.
The system can be configured to operate in various modes, typically using a wide-angle
sonar transducer to profile the water column and seafloor in high resolution.
Using appropriate sensors, the DRX can be configured to be suitable for operations such
as commercial fishing, sport fishing, survey and mapping, exploration, search and rescue
and many more.
Actual data types output to client applications, such as WASSP CDX, will be determined
by:
»Data types enabled in DRX, as determined by the licensing model.
»Data types the client application supports and queries for.
»If the client application is using raw, processed or post processed data .
»Data types that are supported will increase through continual product development
and DRX upgrades.
The DRX functionality is defined by the software installed, the data types enabled,
the transducer connected, and the physical DRX model. The physical DRX model is
supported in 4 configurations:
»WSP-603-200; DRX-25 wideband model (no longer available).
»WSP-603-200; DRX-32 wideband model used with S3 and F3 products.
»WSP-603-205; DRX-32 wideband model with IP67 rating.
»WSP-603-250: DRX-46 wideband model used with F3X.
The same software package is applicable to all models.
For specification details on each model see “10 Technical Specifications” on page 75.
NOTE: DRX Serial numbers below #70 are model DRX-25.
DRX Serial numbers #70 and above are DRX-32.
DRX Serial numbers #10001 and above are DRX-46
YOUR NOTES

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1.1. MAIN FEATURES
The main features of DRX in a multibeam configuration will depend on the model as
follows:
»Variable number of beams - Model and configuration dependent.
»120° Swath coverage – Transducer dependent.
»Depth capability is configuration and environment dependent. Typical
configurations:
• DRX-25 with WMB160 transducer; 1 to 150m
• DRX-32 with WMB160 transducer; 1 to 200m
• DRX-46 with WMB160 transducer; 1 to 400m
• DRX-46 with WMB80 transducer; 2 to 600m
»Variable frequencies.
»Supported by multiple client applications to meet dierent customer requirements.
»Direct Ethernet connection to multiple client applications.
»Continuous real-time 2D and 3D mapping.
»Easy to operate and quick to install.
»Web based setup and configuration.
»Beam stabilisation.
»Variable beam width.
2 SYSTEM OVERVIEW
The WASSP multibeam sounder system requires the following components:
DRX; Transmit, receive, digital signal processing, display processing, License management
and data server for client applications.
WASSP TRANSDUCER; See WASSP Transducer Reference Manual.
PC; Control, post processing and viewing of sounder, sonar and mapping needs to be
handled by a suitable application, running on PC or tablet.
GPS; Position and time required for water column and bathymetry geo-referencing.
HEADING SENSOR; Required for correctly orienting the multibeam data.
MOTION SENSOR; Required for stabilising the water column and bathymetry data for
vessel roll, pitch and heave.
SOUND VELOCITY PROBE; Required for correcting Sound Velocity in order to improve
depth accuracy across the swath.
SOUND VELOCITY PROFILER; For accurate range measurement, sound velocity needs
to be known at the transducer and through the water column. The Sound Velocity Profile
information can be applied if using 3rd Party applications supporting SVP.
NOTE: As with any multibeam sounder, the quality of the sensors connected
will directly aect the performance of the system. Enhancements to system
performance include using high precision RTK GPS, accurate sound velocity
measurements, sound velocity profiles, and high performance motion sensors.
Your WASSP dealer can advise on sensors to suit your requirements. WASSP
recommended sensors are also detailed in this manual, see “Appendix B -
Supported Sensors and Sentences” on page 87.
The WASSP system can be supplied in various configurations to allow customised or
turnkey solutions. These include:
»DRX and transducer with WASSP CDX and sensor package; Customer supplies PC or
tablet and optionally 3rd Party navigation, fishing or survey package.
»DRX and transducer with WASSP CDX; Customer supplies sensors, PC or tablet and
optionally 3rd Party navigation, fishing or survey package.
»DRX and transducer with WASSP CDX and sensor package and wireless package;
Customer supplies PC or tablet.
For details on WASSP system packages available see wassp.com
NOTE: Sensor package details can be found in the WASSP Sensor Box
Installation Manual.
Some typical system configurations are as follows:

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2.1. COMPLETE SYSTEM
USER PC
WASSP CDX
Data Manager
or 3rd Party
Application
Satellite
Compass
GPS / HDG /
Motion
GPS
Heading
Sensor
IMU
Pitch /Roll /
Heave
Sound
Velocity
Probe
PPS
WASSP
Transducer
DC Power KP
Web Browser
DRX Setup
webpages
Required
Optional
Figure 1. Complete System
2.2. RECOMMENDED SYSTEM
USER PC
WASSP CDX
Data Manager
Satellite
Compass
GPS / Heading
WASSP
Transducer
DC Power
IMU
Roll / Pitch /
Heave
Figure 2. Recommended System
See “Appendix B - Supported Sensors and Sentences” on page 87 for supported
sensors.
2.3. SURVEY SYSTEM
USER PC
3rd Party
survey SW
–Hypack,
Qinsy, Eiva …
RTK GPS
Heading
Sensor
IMU
Pitch /Roll /
Heave
Sound
Velocity
Probe
PPS
WASSP
Transducer
DC Power
Figure 3. Survey System
NOTE: Check “Appendix B - Supported Sensors and Sentences” on page 87
for which sensors and sentences are support for input of position, heading,
attitude and sound velocity.
NOTE: Images show DRX-32 throughout the manual. See “8 Outline Drawings”
on page 66 for DRX-32 and DRX-46.

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3 INSTALLATION PROCEDURES
Basic Installation Flow:
CHECK INSTALLATION PARTS
(Section “3.1. Installation Parts” on page 15)
- Check that all parts for installation have been received.
This should include: cables, connectors, brackets etc.
TRANSDUCER
(Section “3.2. Transducer” on page 15)
- Install the Transducer
- Install the Transducer Cable Gland
LOCATE DRX / GPS / SENSORS
(Section “3.3. Locating the DRX System” on page 15)
- Run cables to DRX location
MOUNT THE DRX
(Section “3.4. Mounting the DRX” on page 16)
CONNECTING THE DRX
(Section “3.5. Connecting the DRX” on page 18)
- Connect Power to DRX
- Connect Transducer to DRX
- Connect Sensors to DRX
CONNECT DISPLAY AND CONTROL DEVICE
(Section “3.6. Display and Control Devices” on page 23)
- DRX Setup and Configuration
- Control, Display and Data
3.1. INSTALLATION PARTS
Standard supply:
»1 x DRX unit
»4 x Connector plugs
»1 x power cable
»1 x LAN cable
»1 x USB Flash Drive:
• Find My DRX Application
• WASSP CDX Application
• WASSP Utilities
• License key for Data Manager
»Depending on kit:
• Transducer installation kit (a package with a transducer cable clamp, a Tx
connector and installation manual)
• Widescan Sensor package (refer to Sensor Box Installation Manual)
»WASSP DRX Installation Manual
3.2. TRANSDUCER
The DRX supports multiple transducer types and can be setup to operate in a variety of
configurations. Typical setup will be multibeam wideband mode with:
»WMB160
»WMB80
Detailed specification and mounting methods for supported transducers is described in
the WASSP Transducer Installation Manual.
Transducer selection is described in “5.2.4. Data Setup Tab” on page 39.
3.3. LOCATING THE DRX SYSTEM
The DRX is a highly sensitive receiver which is capable of discerning signals of less than
one microvolt. In order to get the highest performance out of the DRX system keep
the transducer, transducer cable and the DRX far away from sources of electrical and
acoustic noise. AC/DC inverters and DC/DC converters are particularly noisy and even if
not used to power the system, should be kept as far away as possible.
The DRX will need to be located with access to all required sensors. This needs to
include transducer cable, GPS, motion sensor and LAN connections. Serial cables from
sensors should be run direct to DRX with no splitters or interfaces boxes.
When selecting a mounting location, keep the following points in mind to maintain
optimal performance:
»Maintain ambient temperature in the vicinity of the DRX within operating
specifications. Operating in temperatures outside of specification will result in
reduced operating lifetime or direct failure due to overheating:
• The area needs to be well ventilated in order to avoid local ambient increase
from self heating.
• Keep out of direct sunlight. Exposure to sunlight will result in direct solar gain

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• Keep away from exhaust pipes and vents.
»Avoid electrical and acoustic noise as this will have a direct impact on system
performance:
• Avoid locations close to electrical equipment such as inverter, converters and
other power supplies.
• Keep away from electromagnetic field-generating equipment such as motors
and generators.
»To avoid damage to the DRX:
• Locate where Shock and vibration are minimal.
• The area should not be prone water ingress or high moisture content.
CAUTION: Electrical or acoustic noise will directly impact system performance
and signal integrity. AC/DC inverters and DC/DC converters will impact system
sensitivity and can cause system noise even if not directly connected. If an AC/
DC or DC/DC PSU is required only use low noise, good quality products in
order to minimise impact on system performance.
CAUTION: Operating outside the temperature specification will reduce
the operating lifetime of the DRX. For specifications, see “10 Technical
Specifications” on page 75.
Refer to Knowledge Base for guidelines on the Operating Environment.
“Appendix I - Product Registration, Support and Resources” on page 101.
3.4. MOUNTING THE DRX
Installation & Mounting Considerations
The DRX can be installed on a desktop, deck or on a bulkhead.
Using the mounting flanges on the bottom plate, the DRX is mounted vertically on a
bulkhead, or horizontally on a hard surface. Important considerations are:
»A vertical position is ideal for optimal thermal performance (Transducer Connectors
front face down). See ”Figure 4. DRX Bulkhead Mount” on page 17.
»The second option is horizontal on a hard, flat surface. See “Figure 5. DRX Horizontal
Mount” on page 17.
»If mounted in an enclosed space, forced ventilation will be required to maintain an
ambient temperature within the stated limits around DRX. See ”Figure 4. DRX Bulkhead
Mount” on page 17. and See “Figure 5. DRX Horizontal Mount” on page 17.
»Leave slack in cables for maintenance and servicing ease.
»For maintenance and checking purposes, leave sucient space at the sides and rear
of the DRX installation location.
»Fasten the DRX to the mounting location with a minimum of four self tapping
screws. See Section “8 Outline Drawings” on page 66 for DRX dimensions and
mounting clearances.
• Mounting screws; Minimum M6 x 40mm x 4.
• When installing the DRX, thread locking fluid or locking washers are recommend
to avoid vibration loosening.
• Anti Vibration Mounts are recommended.
»DRX should be always be mounted on a hard surface capable of supporting the DRX
weight.
CAUTION: Operating outside the temperature specification will reduce
the operating lifetime of the DRX. For specifications, see “10 Technical
Specifications” on page 75.
.
CAUTION: IF DRX is mounted in an enclosed space forced ventilation as
described below is required.
Back Plate
Front Plate
300mm
clearance
500mm
clearance
Top
Hard Surface
300mm
clearance
300mm
clearance
500mm
clearance
Figure 4. DRX Bulkhead Mount Figure 5. DRX Horizontal Mount
Figures 4 and 5 show clearance required for cabling and forced air ventilation if DRX is in
an enclosed space.
Before installing the DRX in an enclosed space ensure that the ventilation is sucient to
prevent overheating. Consider the following:
»Cool air supply needs to be able to adequately dissipate the thermal output of DRX.
»Ensure the hot exhaust air from the enclosed area does not recirculate into the DRX.
Perforations in the top will assist in removing exhaust air.
»Install the DRX in a position to allow the air flow to circulate eectively through the
outlet.
»Route all cabling to minimise blockage of airflow.
NOTE: If operating in a high ambient environment forced airflow over the DRX
will significantly improve thermal performance. Always make sure that there is
adequate ventilation.

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3.5. CONNECTING THE DRX
This section describes the installation requirements for cables from and to the DRX.
Access to, and connection of all cables should be performed by a qualified installer.
3.5.1. Power Supply
The DRX should use a clean power supply. For best performance use a DC battery supply
or as a secondary alternative it is recommended to use a low noise converter.
CAUTION: A noisy power supply will have direct impact on system
performance.
3.5.2. Connectors and Components
This section identifies the various connectors exposed on the DRX.
Transducer TX
Transducer RX
Power On / O
LED Indicators
Figure 6. Front Plate
NOTE: X/Tx connector in Transducer RX block is only used for IP67 version of
DRX.
For descriptions, see “3.5.3.1. Cables and Components – Front Plate” on page 19.
Grounding
Point
PowerEthernet N2K
Serial RS-232
RS-422-A
FAN
(DRX-46 only)
RS-422-B
AUX
NMEA 0183
AUXN2K
POWER
LAN
FAN
0183
RS232
RS422-A RS422-B
Figure 7. Back Plate
CAUTION: All serial cables from sensors on RS-232, RS-422 or NMEA 0183
should be direct with no splitters or interface boxes, unless supplied by
WASSP. Failure to do this will result in compromised mapping performance
due to potential timing issues.
For descriptions, see “3.5.3.2. Connectors and Components – Back Plate” on page 21.
3.5.3. Cables and Components
3.5.3.1. Cables and Components – Front Plate
Power On/O
The power button controls system on/o through soft control. It requires power to be
connected to the unit.
»Short press the power button to turn the power on. To power down, press and hold
the power button for 4 seconds (to prevent bumping starting a power down).
»Power on/o can also be controlled remotely using the remote control cable on
back plate, referenced in the following page.
NOTE: Remote Power Control is described in “3.5.3.2. Connectors and
Components – Back Plate” on page 21.

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Transducer RX
The Transducer RX is connected to the DRX through seven receive cables. The receive
cables must be connected in the colour order shown on the connector.
See “Appendix A.1 Transducer RX” on page 76 for connection specification.
7 Receive
Cables
Transmit
Cable
Cable to
Restrainer
Figure 8. RX Cable Connection
CAUTION: The 7 receiver cables MUST be connected in the colour order
indicated on the DRX. Failure to do this will result in faulty operation of the
WASSP system.
CAUTION: The cable MUST be fitted with the supplied cable restrainer to
prevent stress on the RJ45 Receive connector block. See “Appendix A.2
Transducer Cable Restrainer” on page 77.
NOTE: Actual product may dier from images depending on model.
See “8 Outline Drawings” on page 66.
Transducer Tx
The Transducer Tx cable applies transmit signal to the transducer.
See “Appendix A.3 Transducer Tx” on page 78 for connection specification.
3.5.3.2. Connectors and Components – Back Plate
RS-232 IN/OUT
Connector RS232
RS-232 is a serial connection for sensors/processors that natively output RS-232. For
NMEA 0183 talkers it will depend on the instrument as to whether it will be RS-232
compliant or require a converter. RS-232 supports power out at same voltage as DRX
power supply.
See “Appendix B - Supported Sensors and Sentences” on page 87.
RS-232 can be configured using the DRX SETUP WEBPAGES. See “5.2. Commissioning
Step 2: Sensor Configuration” on page 36.
See “Appendix A.4 RS-232” on page 79 for connection specification.
RS-422 IN/OUT
Connector RS422-A and RS422-B
RS-422 is a serial connection for sensors natively outputting RS-422 or by using RS-232 to
RS-422 converter. For NMEA 0183 talkers it will depend on the instrument as to whether
it will be RS-422 compliant or require a converter.
The RS-422 Connector also supports PPS IN:
»RS-422-A supports power out at same voltage as DRX power supply
»RS-422-B allows data forwarding and power out at same voltage as DRX power
supply
See “Appendix B - Supported Sensors and Sentences” on page 87.
RS-422 can be configured using the DRX SETUP WEBPAGES. See “5.2. Commissioning
Step 2: Sensor Configuration” on page 36.
See “Appendix A.5 RS-422-A” on page 80 and “Appendix A.6 RS-422-B” on page 81
for connection specifications.
NMEA 0183
Connector 0183
NMEA 0183 is a serial connection for sensors natively outputting NMEA 0183 (single
talker, multi listener). As well as an NMEA input, this connector also features an NMEA
output.
The 0183 Connector also supports PPS IN.
See “Appendix B - Supported Sensors and Sentences” on page 87.
NMEA 0183 can be configured using key DRX SETUP WEBPAGES. See “5.2.
Commissioning Step 2: Sensor Configuration” on page 36.
See “Appendix A.7 NMEA 0183” on page 82 for connection specification.
Remote Power
Connector AUX
A local supplied latching switch can be connected to pins eight (Remote PWR On) and
nine (Remote PWR On GND) of connector AUX. When the switched is closed the DRX will
power on. When the switch is open (circuit open) then the DRX will power o.
See “Appendix A.8 Remote Power” on page 83 for connection specification.

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KP1/KP2 IN
Connector AUX
KP IN interface is to allow the DRX to transmit in sync with another sounder/sonar. This
feature is useful for helping reduce transmit pulse interference.
KP IN takes the key pulse from an external system (master) and synchronises the DRX
(slave) transmit pulse with that key pulse as a trigger.
See “Appendix A.9 KP1/KP2 In” on page 84 for connection specification.
See “5.2.6. Key Pulse Tab” on page 42 for connection information.
KP1 OUT
Connector AUX
KP OUT interface is to allow the DRX to transmit in sync with another sounder/sonar.
This mode allows the DRX to be the KP master, and the receiving sounder/sonar to be
the slave. This feature is useful for helping reduce transmit pulse interference.
This mode is recommended to optimise the nterference immunity from the connected
sounder.
See “Appendix A.10 KP1 Out” on page 85 for connection specification.
See “5.2.6. Key Pulse Tab” on page 42 for connection information.
PPS IN
Connectors RS422-A, RS422-B and 0183
Pulse-per-second (PPS) input allows connection equipment with a PPS timing output.
PPS input allows the DRX to be accurately synchronised with GPS UTC enabling highly
accurate positional timing accuracy, potentially improving mapping data positional
accuracy by removing GPS latency issues.
Through the DRX SETUP WEBPAGES the user can choose which PPS input is tied to
which input, and view that the signal is being correctly received. See “5.2. Commissioning
Step 2: Sensor Configuration” on page 36.
See “Appendix A.5 RS-422-A” on page 80 and “Appendix A.7 NMEA 0183” on page
82 for connection specification.
Power
The DRX is designed to be run on DC voltage, see specs in “10 Technical Specifications”
on page 75.
See “Appendix A.11 Power Connection” on page 86 for connection specification.
Ethernet
Connector LAN
The Ethernet link is used for all communication between the client application running
on PC (or other devices) and the DRX. This link is used for control of the DRX and for the
DRX to supply data for visualisation and post processing to the client device.
The Ethernet connection can be connected either:
• directly using crossover cable or auto crossover (DRX supports auto MDI/MDI-X)
OR
• via a network switch if supporting multiple clients or running the DRX on vessel
LAN (local area network).
The Ethernet connection needs to support at least Gigabit network to enable full
functionality.
If there is a DHCP server on the LAN, the DRX will be assigned an appropriate IP address
by the DHCP server. If there is no DHCP server, the DRX will fall through to Zero-
configuration assignment in block 169.254.0.0/16. Any connected device will need to
be assigned an appropriate IP address on the same subnet as the DRX, either via DHCP
server, Zero-configuration or fixed IP.
See “Appendix A.12 Ethernet” on page 86 for connection specification.
NMEA2K
Connector N2K
See “Appendix B - Supported Sensors and Sentences” on page 87.
See “Appendix A.13 NMEA2K” on page 87 for connection specification.
Power Out
Connector FAN
Availability dependent on model.
The fan connector powers the optional fan assembly.
See “Appendix A.14 FAN” on page 87 for connection specification.
NOTE: The fan power will only switch on while the DRX measures an internal
temperature greater than 40 degrees Celsius.
Grounding Point
The grounding point is used to minimise the pickup of noise from interfering sources.
The earth lug on the DRX should be commected to a good earth point on the vessel. Use
a short braided cable for optimal noise rejection.
CAUTION: Noise due to poor grounding will have direct impact on DRX
performance and signal integrity.
3.6. DISPLAY AND CONTROL DEVICES
The DRX supports two levels of communication over the Ethernet link; web browser
based DRX SETUP WEBPAGES and IP based DRX client applications.
In order to initiate communication with the DRX the client needs to know the DRX IP
address. This can either be done through the client application discovery mechanism or
using the ‘FIND MY DRX’ Help utility.
The ‘FIND MY DRX’ utility can be run on any PC connected to the DRX over the Ethernet
connection. ‘FIND MY DRX’ will find any DRX on the network by IP address.
NOTE: The PC only needs a physical Ethernet connection to find DRXs on the
network. IP address and subnet is unimportant, however, for connectivity the
DRX Client Application needs to be on the same TCP/IP Subnet.

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Figure 9. Find My DRX App
3.6.1. DRX Setup Webpages
DRX SETUP WEBPAGES are used for upgrade, setup, feature licencing and configuration.
For more details see “4 Operating the DRX” on page 26 and “5 Sensor Configuration”
on page 34.
The DRX SETUP WEBPAGES are launched by opening any supported web browser and
entering the DRX IP address followed by port 2001 e.g. 169.254.54.69:2001
NOTE: Clicking on the appropriate DRX in ‘FIND MY DRX’ will automatically
launch the web browser with the appropriate URL.
NOTE: Chrome browser, shipped with DRX, is fully supported. Other
browsers may not behave as expected. If webpage does not update use
CTRL F5.
CAUTION: Only one instance of ‘DRX SETUP WEBPAGES’ should be run
otherwise a corruption may occur.
3.6.2. DRX Client Applications
Ethernet IP is used for discovery, control and data through supported DRX client
applications. Current supported client applications include WASSP CDX, 3rd Party
Navigation, sounder and survey applications and are described in “7 Control and Display
Application Support” on page 60.
NOTE: For DRX client application connection, the DRX and client application
need to be on the same TCP/IP subnet.
If DRX and client applications have incompatible IP addresses, discovery will
succeed but connection will fail.
3.7. ELECTRICAL ENVIRONMENT CHECK
It is important to validate the electrical environment in dock after installing the DRX,
connecting all the sensors and transducer.
Steps to validate electrical environment:
1. Turn all electrical equipment and engines on
2. Ensure no acoustic equipment is in a transmitting state
3. Turn the DRX on
4. Run DRX Diagnostics
»Select the DRX
»Connect
»Start
See “Figure 10. Example of
an Electrical Environment
Check of an 80kHz
install” Each coloured line
represents a transducer
channel and all of them
should ideally be under the
red line in the operating
spectrum of the specific
WASSP transducer.
Operating spectrum
transducer:
80KHz: 40 to 100kHz
160KHz: 80 to 180kHz
Figure 10. Example of an Electrical Environment Check of an
80kHz install
Please contact your local dealer for support or refer to our Knowledge Base (see
“Appendix I - Product Registration, Support and Resources” on page 101) if the
channels are not all under the red line.

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4 OPERATING THE DRX
»To turn ON the DRX, short press the power key.
»To turn OFF the DRX, press and hold the power key for more than 4 seconds. All
LEDs will turn o, indicating that power has been turned o.
4.1. POWER
The DRX can be powered on/o using the power button or the remote power switch.
4.2. LED STATUS
The DRX features 4 LEDS next to the power button which give a quick indication of the
status of the DRX system.
4.2.1. Startup sequence.
The boot sequence is as below:
Power Network Ping Error
Power on
Booting
Starting
Process
Normal
Operation
Figure 11. Startup Sequence
4.2.2.Normal Operation LED Indications
Power Network Ping Error
Figure 12. Normal Operation LED Indications
Power LED:
O = Power OFF
On Solid = DRXApp is running
Network LED:
O: No Link (cable not connected)
Solid: Link/Link Established
Blinking: Tx or RX trac
Ping LED:
O: Not pinging
Blinking: Pinging with frequency relative to ping rate (not actual ping rate).
Error LED:
O: Normal operation
On: (While booting) system is booting
On: (After booting) Indicates an error state. All LED states should be noted and reported
to WASSP Support. See “Appendix I - Product Registration, Support and Resources” on
page 101.

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4.3. SYSTEM UPDATE & DIAGNOSTICS
The System section of the DRX SETUP WEBPAGES is used for checking DRX versions,
upgrading the DRX and restoring the DRX settings.
Launching the DRX SETUP WEBPAGES is described in “3.6. Display and Control Devices”
on page 23.
To check DRX version, open the DRX SETUP WEBPAGES and open the SYSTEM tab and
open the UPGRADE tab. Versions should be recorded by copying and pasting or through
screen capture.
CAUTION: Do not power down your DRX during the update procedure, this
may result in complete system failure.
CAUTION: System upgrade cannot be performed whilst DRX is pinging as this
may result in failure.
NOTE: Note down version numbers before and after upgrading.
To perform a system upgrade:
1. Open the DRX SETUP WEBPAGES, open the SYSTEM tab and select the UPGRADE tab.
2. Select the BROWSE button to navigate to the folder containing the software update
package and select the UPLOAD button.
3. During the update procedure the DRX system will reboot. Once completed, check the
new software version in the System tab.
Figure 13. System Upgrade
Upgrade Error Codes
Upgrade may fail for various reasons. An error code and/or text will be displayed in the
message box.
1 Transferred Data is not a file.
2 Transferred File is not of valid type.
3 Transferred File contains bad data.
4 Unable to initiate upgrade, stage 1.
5 Failed to install.
6 Unable to initiate upgrade, stage 2.
7 Unable to restart after upgrade.
8 No File transferred.
9 Undefined.
10 Failure. See error log files for detail.
Contact WASSP Support if this error occurs.
TIP: F5 (refresh button) should be pressed if there is any doubt in data
consistency between the Webpage and the DRX.
4.3.1. Diagnostics Information
Under SYSTEM tab, UPGRADE option there are diagnostics and information options.
»DISPLAY DEBUG INFORMATION will display the DRX logs in the display window.
»CHECK UPGRADE STATUS can be used to confirm with an upgrade has been
completed successfully.
»DOWNLOAD DIAGNOSTICS INFORMATION will download the DRX logs.
NOTE: If there is anything unusual requiring WASSP Support the DRX logs
should be supplied for analysis
»DISPLAY/HIDE SYSTEM INFORMATION shows detailed system information with
version and product details.
4.4. SYSTEM RESTORE
System Restore sets all settings to factory default values.
1. Select the SYSTEM tab and select the RESTORE tab.
2. Click the RESTORE DEFAULTS button to restore the unit to default configuration
settings. The unit will reboot and you will then need to re-enter all the sensor setup
and oset values. See “5 Sensor Configuration” on page 34.

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Figure 14. Restore Defaults Tab
NOTE: RESTORE DEFAULTS will restore entire DRX configuration, not just
Sensor Setup.
4.5. NETWORK CONFIGURATION
Network configuration allows setting the DRX to a fixed IP address.
By default DRX will be assigned an IP through Zero-configuration or by a DHCP server if
there is one on the LAN. By setting a fixed IP this will override automatic assignment.
1. Select SYSTEM tab and
select NETWORK tab.
2. Use the SET STATIC IP
ADDRESS button to set a
fixed IP.
3. Use the REMOVE STATIC
IP ADDRESS BUTTON
to revert to automatic IP
assignment.
NOTE: The PC/Client Application needs to be in the same subnet as the DRX
for connectivity. DRX IP address can always be identified using ‘Find my DRX’ ;
see “Figure 9. Find My DRX App” on page 24.
4.6. SYSTEM FEATURES
DRX optional features can be enabled through license keys.
To enable a feature, the appropriate feature license file needs to be purchased through
a WASSP dealer or directly through WASSP Ltd. The license will be supplied as a license
file over email, on a USB flash drive or other media. Available features can be seen by
selecting SYSTEM tab and selecting FEATURES tab.
Figure 15. System Features

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Licenses can be in one of 3 states:
- ACTIVE; License is installed and active.
NOTE: The license may be a permanent or time limited license.
- EXPIRED; License is installed but has expired/timed out.
- NO LICENSE; No License for this feature has been installed.
Figure 16. License Status
Licenced Features include:
Application Interfaces
TIMEZERO; Allows direct interface between DRX and TZ. TZ controls the DRX and
displays data supplied by the DRX, depending on which display functionality is enabled.
SURVEY; Enables interface between DRX and various survey platforms. DRX supplies the
appropriate data for post processing on the survey application.
OLEX; Allows interfacing to Olex through CDX. Control is required by CDX and display
data is passed through to Olex.
Display Functionality
BACKSCATTER; Seafloor backscatter data is enabled allowing the client application to
display backscatter strength on 2D and 3D overlays or to use for post processing.
WATER COLUMN TARGETS; Targets detections in the water column, such as fish,
are enabled. This allows client applications to display discrete targets and their target
strengths on the 2D or 3D displays.
SIDESCAN; Data is processed as sidescan is enabled. This allows port/starboard sidescan
imagery on the client application.
Control Functionality
RTK TIDES; Use of GPS height can be used to compensate for sea level change. This is
particularly useful for accounting for tidal height when mapping bathymetry. See “5.2.8.
Geoids Tab” on page 48 and “Appendix D - Ship’s Measurement Points” on page 94.
IMS; Used for automated optimisation of DRX for improving performance when there
is acoustic interference. IMS is enabled or disabled from the client application. See
“Appendix F - Auto Control in CDX” on page 97.
ADVANCED KEY PULSE; As part of IMS, AKP (Advanced Key Pulse) functionality can be
used to improve management of interfering acoustic equipment. See “5.2.6.4. Advanced
Key Pulse” on page 45.
NOTE: IMS is not available on all DRXs. Check with WASSP Support with your
DRX Serial Number for more information.
To install the license follow the steps:
1. Select SYSTEM tab and
select FEATURES tab.
2. Select the REFRESH
LICENSE STATUS button to
see current active Licenses
and associated expiry date.
3. Select the BROWSE button
to select the appropriate
license file.
4. Select UPLOAD button for
the selected license file.
5. You will be asked to
confirm selection.
6. License file will be
uploaded and applied.

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5 SENSOR CONFIGURATION
The WASSP system requires position, heading, attitude, heave and time information
in order to be fully functional. The overall performance will be directly aected by the
quality of the sensors chosen and being configured as described below.
WASSP supplies sensor package kits for recommended install. See the WASSP Sensor Box
Installation Manual for detailed information.
For supported sensors and sentences, see “Appendix B - Supported Sensors and
Sentences” on page 87.
NOTE: Currently support sensors and sentences will depend on software
version and can be found at wassp.com
5.1. COMMISSIONING STEP 1: SHIP MEASUREMENTS
Take measurements from the GPS antenna, motion sensor and transducer to the vessel’s
reference point. See “Figure 17. Ship Measurements Diagram” on page 35.
These measurements must be as accurate as possible and should be measured to cm
level accuracy. The accuracy of these measurements have a direct impact on the WASSP
Multibeam performance. Position to measure from on the transducer, GPS antenna and
motion sensor is described in”Appendix D - Ship’s Measurement Points” on page 94.
Enter these values in the spaces below, and in the SENSOR INSTALLATION tab within the
SENSOR tab of the DRX SETUP WEBPAGES. See “Figure 20. DRX Setup, Sensor Tab” on
page 39.
NOTE: The Ship’s Reference Point needs to be a point on the vessel that
is easy to measure to and should be located with this in mind. The actual
position of the Reference Point is unimportant but should be clearly marked
and measurements between the sensors and the Reference Point made as
accurately as possible.
Transducer (XDCR) Depth (Draft) Displacement: m 🅰_______
GPS X Displacement from reference: m 🅱_______
GPS Y Displacement from reference: m _______
GPS Z Displacement from reference: m _______
Transducer (XDCR) X Displacement from reference: m _______
Transducer (XDCR) Y Displacement from reference: m _______
Transducer Z Displacement from reference: m _______
Motion Sensor X Displacement from reference: m _______
Motion Sensor Y Displacement from reference: m _______
Motion Sensor Z Displacement from reference: m _______
NOTE: Separate sensors can be used for GPS data, heading, roll, pitch and
heave as required. Make sure to note down all Sensor oset.
Sensor Installation
GPS
XDCR
R
GPS Z (-)
XDCR Z (+)
Transducer Draft
Z axis
Sky
Negative
Sea
Positive
R = Ship’s Reference Point
IMU Z (-)
R
XDCR
X axis
GPS X (+)
XDCR X (-)
GPS
Stern
Negative
Bow
Positive
Reference
Y axis
R
XDCR
GPS Y (-)
XDCR Y (+)
GPS
Port
Negative
Reference
Starboard
Positive
Looking from above
TIP: Transducer Draft is used
to adjust for true depth from
sea level.
A
B
G
D
E
H
F
C
IMU
IMU X (+)
IMU Y (-)
I
J
Figure 17. Ship Measurements Diagram

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5.2. COMMISSIONING STEP 2: SENSOR CONFIGURATION
The Configuration section of the DRX SETUP WEBPAGES is used for configuring the DRX
physical ports and the sensors connected to the DRX.
Launching the DRX SYSTEM WEBPAGE is described in “3.6. Display and Control Devices”
on page 23.
5.2.1. Presets Tab
The PRESETS tab allows a selection of preconfigured sensor setup options and the ability
to save and retrieve custom or user defined preset options.
5.2.1.1. Applying Presets
1. Select the required
preset from the
dropdown of
AVAILABLE PRESETS.
2. Select LOAD to apply
the chosen preset.
3. Presets will be loaded
and set PORT SETUP,
SENSOR, DATA SETUP,
CORRECTIONS. PPS
configuration.
NOTE: Sensor Osets still need to be manually setup.
NOTE: Available Presets will consist of defaults loaded into the DRX and any
custom presets applied by the user.
Preset options include:
»Widescan Sensor Package – V103 With Spatial; Sensor package supplied as optional
kit. Reference Sensor Box Installation Manual for details.
»Widescan Sensor Package – V103 With WSP-038; Sensor Package available from
WASSP Ltd. Configures as WSP-038 on RS232 Port and V103 on RS422 Port with
PPS configures.
»SC-30 Standalone; Configuration for customer supply SC-30 used for Position,
heading and attitude data. Configure with SC-30 on 0183 port.
These presets may change depending on version and model.
NOTE: Presets will configure PORT SETUP, SENSOR, DATA SETUP,
CORRECTIONS, PPS.
5.2.1.2. Saving Custom Presets
To save current configuration as a Preset:
1. Enter a name for the
Preset under SAVE
CURRENT PRESET.
2. Select STORE PRESET
IN DRX.
The preset will be stored in the DRX.
5.2.1.3. Downloading and Uploading Presets
Custom configurations can be stored externally to the DRX.
1. Select a custom preset from the Available Presets
2. Select DOWNLOAD
and store in your
preferred location.
Custom configurations stored externally can be uploaded to the DRX
1. Select BROWSE and
select the appropriate
preset file.
2. Select UPLOAD or
UPLOAD AND USE.
3. The preset will now appear under Available Presets as a custom preset.
NOTE: Only upload presets that were downloaded from the DRX.
5.2.2. Port Setup Tab
The PORT SETUP tab is used for configuring the physical DRX ports to receive data from
the sensors attached to that port.
NMEA 0183 port can also be used to transmit data and uses the same configuration as
receive.

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Figure 18. DRX Setup, Port Setup Table
The following options need to be set up for each of the DRX ports being used:
»Enabled; Marks a port as active or not active.
»Baud; Sets port’s baud rate to match the sensor baud rate. Bits, Stop Bits, Parity and
Handshake; Configures the port to match the incoming sentences from the sensor.
NOTE: You must COMMIT or these settings will be lost.
NOTE: Port assigned to sensor in the ‘Sensor’ tab.
TIP: F5 (refresh button) should be pressed if there is any doubt in data
consistency between the Webpage and the DRX.
The monitor check box can be selected to display the incoming sentences on the
specific port. This can be used to identify if the port is configured correctly and the
sensors are outputting the correct data.
Figure 19. DRX Setup, Port Setup Tab with Sensor Data
5.2.3. Sensor Tab
The SENSOR tab is used to configure the physical position of each sensor being used
and which port that sensor is connected to on the DRX. SENSOR tab is also used for
selecting transducer type.
Figure 20. DRX Setup, Sensor Tab
For each Sensor being used, set the following:
»SENSOR; Select the sensor type from the drop down list. Select USER DEFINED if
the sensor being used is not listed (any sensors not listed have not been specifically
tested with DRX).
»X, Y, Z OFFSET; Set the measurement as per section “5.1. Commissioning Step 1:
Ship Measurements” on page 34.
»PORT; Select the physical port on the DRX that the sensor is connected to from the
drop down list.
Transducer selection allows for currently available
WASSP transducer supported by DRX.
NOTE: You must COMMIT or these settings will be lost.
NOTE: Osets should be entered in meters to nearest cm (0.01m).
5.2.4. Data Setup Tab
The DATA SETUP tab is used to setup each external data type that is required by DRX to
function correctly. Each of the data types; position, heading, roll, pitch, heave and time
need to be set.
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