Page 8 of 24
Page 9 of 24
Doc: WSP-038 IMU INSTALLATION MANUAL
Version: 1.4 December 2019
Doc: WSP-038 IMU INSTALLATION MANUAL
Version: 1.4 December 2019
wassp.com
wassp.com
WSP-038 IMU INSTALLATION MANUAL
WSP-038 IMU INSTALLATION MANUAL
3 WSP-038 MOUNTING
The WSP-038 should be installed taking the following into consideration:
»
Accurate measurements need to be taken from the WSP-038, reference point,
transducer and the Satellite compass. Typically cm accuracy is recommended to
achieve acceptable multibeam performance. Refer to the DRX Installation Manual
for details on system commissioning and the ship’s measurements.
»
The WSP-038 should be as close to the vessel’s centre of motion as possible
(usually very close to the vessel centre of gravity). If mounting close to the vessel’s
centre of motion is not practical then use the Ethernet port to configure Lever
Arm corrections for the sensor. See
“Appendix A.4 Lever Arm configuration” on
page 18
(and
“Appendix A.3 WSP-038 Configuration” on page 17
to establish
connection). This will give optimum motion sensor performance which is required
to achieve acceptable multibeam performance.
»
Cabling from the DRX and Satellite compass needs to be accessible.
»
A flat, rigid mounting location is required for optimum motion sensor performance.
»
The WSP-038 should be located where it will not move and is not exposed to
vibration or other influences that could impact IMU performance.
»
WSP-038 needs to be mounted accurately in fore/aft vessel orientation as per the
arrow on the WSP-038. The unit should be mounted closely aligned to the vessel
orientation.
• Heading ac/-1 degrees
• Pitch ac/-2 degrees. Any offset should be adjusted for during
commissioning
• Roll ac/-2 degrees. Any offset should be adjusted for during
commissioning
NOTE: The WSP-038 needs to be mounted aligned fore/aft as per the arrow
on the box.
NOTE: Full commissioning should be carried out as per the DRX Installation
Manual to account for angular offsets.
4 WASSP CONNECTION AND CONFIGURATION
Refer to
“1 Interconnection diagrams” on page 6
for system configuration.
4.1. SATELLITE COMPASS CONNECTION AND CONFIGURATION
4.1.1. Satellite Compass Connection
The Satellite Compass should be connected to the DRX connector RS422-A on the DRX
Back Plate.
Connect the RS422-A Satellite Compass Cable, P/N WSP-400-259, to the DRX RS422-A
connector and to the Satellite Compass interface box. The Satellite Compass Interface
Box will depend on Satellite Compass type and configuration.
See
“Appendix A.1 DRX RS422-A To Satellite Compass” on page 15
for required
interconnect.
4.1.2. Satellite Compass Configuration Requirements
Satellite Compass should be configured:
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Baud; 38400
»
Position:
• Rate; Minimum 1Hz, Recommended 20Hz
• Sentences; GGA, GLL, RMC
»
Heading:
• Rate; Minimum 20 Hz
• Sentences; HDT
»
Speed:
• Rate; Minimum 1 Hz, Recommended 2 Hz
• Sentences; RMC, VTG
»
Time:
• ZDA at 1 Hz
• PPS recommended
4.1.3. Furuno SC Configuration
The Furuno SC should be set up to output NMEA0183. Refer to the appropriate Furuno
SC manuals for mounting and configuration details.
Configuration setup will depend on the specific Furuno SC but will need to meet the
minimum criteria specified in
“4.1.2. Satellite Compass Configuration Requirements” on
page 9
for the port connected to DRX RS422-A.
See “Appendix A.1 DRX RS422-A To Satellite Compass” on page 15
for Satellite
Compass Interconnect.
Summary of Contents for WASP-038
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