Maretron DST110 User manual

Revision 1.3 Page i
DST110
NMEA 2000®Depth/Speed/Temperature Transducer
User’s Manual
Revision 1.3
Copyright © 2017 Maretron, LLP All Rights Reserved
Maretron, LLP
9014 N. 23rd Ave #10
Phoenix, AZ 85021-7850
http://www.maretron.com
Maretron Manual Part #: M003005

DST110 User’s Manual
Page ii Revision 1.3
Revision History
Revision
Description
1.0
Original document
1.1
Typographical corrections
Added configurable items to configuration section
1.2
Removed stainless steel housing information
Added clarifications on hole saw sizes
Added transmission power specification
1.3
Removed replacement parts no longer stocked
Restored Figure 1

Revision 1.3 Page iii
Table of Contents
1General............................................................................................................................. 1
1.1 Introduction................................................................................................................1
1.2 Features....................................................................................................................1
1.3 Quick Install...............................................................................................................1
2Installation......................................................................................................................... 2
2.1 Unpacking the Box ....................................................................................................2
2.2 Housing Material........................................................................................................2
2.3 Tools and Materials...................................................................................................2
2.4 Pretest.......................................................................................................................3
2.5 Antifouling Paint ........................................................................................................3
2.6 Choosing a Mounting Location..................................................................................4
2.7 Mounting the DST110................................................................................................5
2.7.1 All Hull Types Except Cored Fiberglass .....................................................5
2.7.2 Installation in a Cored Fiberglass Hull........................................................7
2.8 Connecting the DST110............................................................................................9
2.8.1 Checking Connections..............................................................................10
3Configuring the DST110.................................................................................................. 10
3.1 Advanced Configuration..........................................................................................10
3.1.1 Device Instance........................................................................................10
3.1.2 Instance Temperature ..............................................................................10
3.1.3 Installation Description .............................................................................11
3.1.4 NMEA2000 PGN Enable/Disable .............................................................11
3.2 Transducer Depth Offset Calibration.......................................................................11
3.3 Temperature Offset Calibration ...............................................................................11
3.4 Speed Multiplier Calibration.....................................................................................11
3.5 Zeroing the Cumulative Voyage Distance (Log)......................................................11
4Maintenance ................................................................................................................... 12
4.1 Using the Blanking Plug ..........................................................................................12
4.2 Servicing the Insert..................................................................................................12
4.3 Replacement Parts..................................................................................................13
4.4 Connection Checking ..............................................................................................13
4.5 Antifouling Paint ......................................................................................................13
5Troubleshooting.............................................................................................................. 13
6Technical Specifications.................................................................................................. 14
7Technical Support........................................................................................................... 16
8Maretron (2 Year) Limited Warranty................................................................................ 17
Table of Figures
Figure 1 –Antifouling Paint Application..................................................................................... 4
Figure 2 –Mounting Locations .................................................................................................. 5
Figure 3 –Bedding and Installation ........................................................................................... 6
Figure 4 –Preparing a Cored Fiberglass Hull............................................................................ 9
Figure 5 –NMEA 2000®Connector Face Views ..................................................................... 10

DST110 User’s Manual
Page iv Revision 1.3
Figure 6 –Replacing the Paddlewheel and O-rings ................................................................ 12
Figure 7 –Troubleshooting Guide ........................................................................................... 14
Table of Appendices
Appendix A –NMEA 2000®Interfacing....................................................................................A1

Revision 1.3 Page 1
1 General
1.1 Introduction
Congratulations on your purchase of the Maretron DST110 NMEA 2000®Depth, Speed, and
Temperature Transducer. Maretron has designed and built your transducer to the highest
standards for years of dependable and accurate service. The DST110 detects the water depth
with a 235 KHz depth transducer, the water speed with a paddlewheel and Hall effect sensor,
and the water temperature with a precision thermistor element.
The Maretron DST110 is designed to operate within the harsh demands of the marine
environment. However, no piece of marine electronic equipment can function properly unless
installed, calibrated, and maintained in the correct manner. Please read carefully and follow
these instructions for installation, calibration, and usage of the Maretron DST110 in order to
ensure optimal performance.
1.2 Features
The Maretron DST110 NMEA 2000®Depth/Speed/Temperature Transducer has the following
features.
NMEA 2000®Interface
235 KHz Ceramic Transducer for Detecting Water Depth
100 Watt RMS Power Output for Depth Measurements up to 100 meters
Paddlewheel with Hall Effect Sensor for Detecting Speed Through Water
Advanced Digital Signal Processing for Accurate Speed Indication Down to 1 Knot
Total Cumulative Distance (distance traveled through the water since installation)
Cumulative Voyage Distance (distance traveled through the water since last reset)
Precision Thermistor for Detecting Water Temperature
Calibration for Compensating Transducer Offset to Waterline or Keel
Calibration for Compensating Temperature Offset
Calibration for Compensating Speed Through Water
Waterproof Enclosure and Cable System
1.3 Quick Install
Installing the Maretron DST110 transducer involves the following five steps. Please refer to the
individual sections for additional details.
1. Unpack the Box (Section 2.1)
2. Choose a Mounting Location (Section 2.6)
3. Mount the DST110 Transducer (Section 2.7)
4. Connect the DST110 Transducer (Section 2.8)
5. Calibrate the DST110 Transducer for Waterline or Keel Offset (Section 3.2)
6. (Optional) Calibrate the DST110 Transducer for Temperature Offset (Section 3.3)
7. (Optional) Calibrate the DST110 Transducer Speed Multiplier (Section 3.4)

DST110 User’s Manual
Page 2 Revision 1.3
2 Installation
2.1 Unpacking the Box
When unpacking the box containing the Maretron DST110, you should find the following items.
1 –DST110 Insert (with attached cable)
1 –Plastic Housing
1 –Plastic Hull Nut
1 –Rubber Bushing
1 –Safety Wire
1 –Blanking Plug
1 –Tube of Silicone Lubricant
1 –Instructions and O-ring for Non-Valve Housings
1 –DST110 User’s Manual
1 –Warranty Registration Card
If any of these items are missing or damaged, please contact Maretron.
2.2 Housing Material
The DST110 is supplied with a plastic housing that is suitable for most installations. As an option,
Maretron offers both a bronze housing material. Please follow these recommendations for
determining the right material for your particular installation.
Plastic housing recommended for fiberglass or metal hulls only. Never install a plastic
housing in a wood hull since swelling of the wood may overstress the plastic causing a
fracture.
Bronze housing recommended for fiberglass or wood hulls. Never mount a bronze
housing in an aluminum hull because electrolytic corrosion will occur.
Never install a metal housing in a vessel with a positive ground system.
2.3 Tools and Materials
Water-based antifouling paint (mandatory in salt water)
Safety goggles
Dust mask
Electric drill with 10 mm (3/8”) or larger chuck capacity
Drill bit: 3 mm or 1/8”
Hole saw: 51 mm or 2” (plastic or bronze housing)
Countersink tool (for installing a flush housing)
Sandpaper
Mild household detergent or weak solvent (such as alcohol)
File (for installation in a metal hull)
Marine sealant
Additional washer [for aluminum hull less than 6 mm (1/4”) thick]
Slip-joint pliers (for installing a bronze housing)
Zip-ties

Revision 1.3 Page 3
Installation in a cored fiberglass hull (see Section 2.7.2):
oHole saw for hull interior: 60 mm or 2-3/8”
oFiberglass cloth and resin
oor Cylinder, wax, tape, and casting epoxy.
2.4 Pretest
Connect the DST110 to the NMEA 2000®network and spin the paddlewheel. Check for a speed
reading and the approximate air temperature. If there is no reading or it is inaccurate, return the
instrument to the place of purchase.
2.5 Antifouling Paint
Marine growth can accumulate rapidly on the transducer’s surface reducing performance within
weeks. Surfaces exposed to salt water must be coated with antifouling paint. Use water-based
antifouling paint only. Never use ketone-based paint, since ketones can attack many plastics
possibly damaging the sensor.
It is easier to apply antifouling paint before installation, but allow sufficient drying time. Reapply
paint every 6 months or at the beginning of each boating season. Paint the following surfaces
(see Figure 1):
Outside wall of the insert below the lower O-ring
Exposed end of the insert
Paddlewheel cavity
Paddlewheel
Exterior lip of the housing
Bore of the housing up 30 mm (1-1/4”)
Blanking plug below the lower O-ring including the exposed end

DST110 User’s Manual
Page 4 Revision 1.3
Figure 1 –Antifouling Paint Application
2.6 Choosing a Mounting Location
The selection of a suitable mounting location is important for the optimal performance of the
Maretron DST110. The mounting location and orientation of the DST110 should be:
1. Preferably on the starboard side of the hull —where propeller blades are moving downward
through the water.
2. Continuously Immersed In Water
3. Where Water Flowing across the Hull is Smooth with a Minimum of Bubbles and Turbulence
–especially at high speeds.
4. Where the Transducer Beam is Unobstructed by the Keel or Propeller Shaft(s)
5. Where there is a Minimum Deadrise Angle
6. Accessible from Inside the Vessel –with adequate headroom for the height of the housing,
tightening the nuts, and removing the insert. Allow a minimum of 280 mm (11”).
Please follow the following guidelines for different hull types (see Figure 2):
1. Displacement Hull Powerboats –Locate amidships near the centerline.
2. Planing Hull Powerboats –Mount well aft, on or near the centerline, and well inboard of
the first set of lifting strakes to ensure that the DST110 is in contact with the water at
high speeds.
3. Outboard and I/O –Mount just forward of the engine(s).
4. Inboard –Mount well ahead of the propeller(s) and shaft(s).
5. Step-hull –Mount just ahead of the first step.
6. Boat capable of speeds above 25 knots (29 MPH) –Review the installation location and
operating results of similar boats before proceeding.
7. Fin Keel Sailboats –Mount on or as close as possible to the centerline and forward of the
fin keel 300 to 600 mm (1 to 2’).

Revision 1.3 Page 5
8. Full Keel Sailboats –Locate amidships and away from the keel at the point of minimum
deadrise.
Caution: Do not mount the DST110 in an area of turbulence or bubbles: near water intake or
discharge openings; behind strakes, fittings, or hull irregularities.
Figure 2 –Mounting Locations
2.7 Mounting the DST110
The Maretron DST110 is mounted through the hull. If the hull is a cored fiberglass hull, please
follow the instructions in Section 2.7.2. For other hull types, please follow the instructions in
Section 2.7.1.
2.7.1 All Hull Types Except Cored Fiberglass
2.7.1.1 Hole Drilling
Warning: Always wear safety goggles and a dust mask.
1. Drill a 3 mm or 1/8” pilot hole from inside the hull. If there is a rib, strut, or other hull
irregularity near the selected mounting location, drill from the outside.

DST110 User’s Manual
Page 6 Revision 1.3
2. Using the 51 mm or 2” hole saw, cut a hole from outside the hull.
Flush housing –Use a countersink tool to make a “seat” in the hull.
3. Sand and clean the area around the hole, inside and outside, to ensure that the sealant
will adhere properly to the hull. If there is any petroleum inside the hull, remove it with
either mile household detergent or a weak solvent (alcohol) before sanding.
Metal hull –Remove all burrs with a file and sandpaper.
2.7.1.2 Bedding
Apply a 2 mm (1/16”) thick layer of marine sealant around the lip of the housing that contacts
the hull and up the sidewall of the housing. The sealant must extend 6 mm (1/4”) higher than the
combined thickness of the hull, washer(s), and hull nut (see Figure 3). This will ensure there is
sealant in the threads to seal the hull and hold the hull nut securely in place.
Figure 3 –Bedding and Installation
2.7.1.3 Installation
Caution: Never pull, carry, or hold the DST110 by the cable as this may damage internal
connections.
1. From outside the hull, push the housing into the mounting hole using a twisting motion to
squeeze out excess sealant (see Figure 3). Align the arrow on the lip of housing to point
forward toward the bow. If the DST110 is not installed on the centerline, angle the
housing slightly toward the centerline to align it with the water flow.
2. From inside the hull, slide the washer onto the housing.
Aluminum hull less than 6 mm (1/4”) thick –Use an additional rubbery, fiberglass, or
plastic washer. Never use bronze since electrolytic corrosion will occur. Never use wood
since it will swell, possible fracturing the plastic housing.
3. Screw the hull nut in place.
Wood hull –Allow the wood to swell before tightening the hull nut securely.
Plastic housing –Do not clamp tightly on the wrenching flats, possibly causing the
housing to fracture.
Plastic hull nut –Hand-tighten only. Do not over tighten.
Metal hull nut-- Tighten with slip-joint pliers.