Raymarine DSM25 User Manual
DSM25
Digital Sounder
Module
Owner’s Handbook
Document number: 81254-2
Date: March 2006
Tr ademarks and registered trademarks
Raymarine is a registered trademark of Raymari ne plc.
All other product names are trademarks or registered trademarks of their
respective owners.
Contents of this handbook © Raymarine 2006.
3
Contents
Important Information .................................. .................................. .....................7
Intended Use ..................................................................................................7
Safety Notices ...............................................................................................7
EMC Conformance .................................................................................8
Product Disposal .............................................................................................9
Conventions ................................................................................................. 10
T echnical Accuracy ........................................................................................10
Warranty .......................................................................................................10
Chapter 1: Overview .................................. ..................................... ...................11
1.1 Introduction .................................. ......................................... ..............11
1.2 What the Sounder Displays ..................................................................12
1.3 How the Fishfinder Works ....................................................................13
Interpreting the Bottom Structure ......................................................13
How T argets are Displayed ...................................................................14
1.4 How to Use this Handbook ...................................................................15
Chapter 2: DSM25 Installation ........................ ..................................... .............17
2.1 Introduction .................................. ......................................... ..............17
Planning the Installation ......................................................................17
2.2 Unpacking and Inspecting the Components .........................................17
2.3 Optional Equipment .............................................................................18
2.4 Selecting Sounder Module Mounting Location ....................................18
2.5 Mounting the Sounder Module ........................................................19
2.6 Cable Runs ...........................................................................................21
2.7 System Connections .............................................................................22
Display Connection ..............................................................................22
T ransducer Connection ........................................................................22
Chapter 3: Using the Sounder Module .............................................................23
3.1 Introduction .................................. ......................................... ..............23
3.2 Selecting the Display Page ....................................................................24
Using the Course Deviation Indicator (CDI) ..................................27
Selecting a Split Window .............................................................27
3.3 Adjusting the Display ...........................................................................28
Range Shift ..................................................................................28
Soft Key Selections ...............................................................................29
3.4 Fishfinder Settings ..............................................................................29
Gain Modes .......................................................................................29
Auto Gain ....................................................................................30
Color Gain ......................................................................................30
TVG (Time V ariable Gain) ...............................................................30
Manually Adjusting the Gain Modes ..............................................30
4 DSM25 Owner’s Handbook
Operating Frequency ............................................................................31
Power Settings ......................................................................................32
3.5 Zoom ................................. ................... ...................... ................... ....... 33
Adjusting the zoom ........................................................................33
Adjusting the Position of the Zoomed Area ....................................34
3.6 Bottom Lock .........................................................................................34
3.7 A-Scope ............................. ................ ................ ................... ................36
3.8 Presentation ............................... ....................... ......................... .......... 37
White Line and Bottom Fill ....................................................................37
White Line ......................................................................................37
Bottom Fill ......................................................................................37
White Line and Bottom Fill together ............................................... 38
Scroll Speed and Pause .........................................................................38
SCROLL AUTO/MAN .....................................................................38
SCROLL PA USE/RESUME .............................................................39
3.9 Determining Target Depths and Distance ...........................................39
3.10 Using Waypoints ..................................................................................40
Chapter 4: Fishfinder Setup ......................................................... .....................41
4.1 DSM Setup ............................................................................................43
Depth Digit Size ..................................................................................43
Depth Lines ........................................................................................43
Palette ................................... ................................ ............................. 43
Depth Offset .......................................................................................44
Speed Calibrate ..................................................................................44
T emp Calibrate ...................................................................................44
DSM Reset ..........................................................................................44
T rip Reset ............................................................................................44
Interference Rejection (Int Rej) ...........................................................45
Second Echo Rejection .......................................................................45
Max. Ping Rate ...................................................................................45
Ping Enable ........................................................................................45
4.2 Fishfinder Alarms ................................................................................46
T arget Depth ID ..................................................................................46
Fish Alarm ..........................................................................................47
Fish Sensitivity ....................................................................................47
Shallow Alarm ....................................................................................47
Shallow Range ...................................................................................47
Deep Alarm ........................................................................................47
Deep Range ........................................................................................47
T emp. Alarm .......................................................................................47
T emp. Range High ..............................................................................48
T emp. Range Low ...............................................................................48
5
Chapter 5: Maintenance and Problem Solving ...............................................49
5.1 Maintenance ........................................................................................49
Routine Checks ....................................................................................49
Cleaning Instructions ...........................................................................49
EMC Servicing and Safety Guidelines ...................................................50
5.2 Resetting the Sounder ..........................................................................51
Power -on Reset ....................................................................................51
Factory Reset ........................................................................................51
5.3 Problem Solving ...................................................................................52
Common Problems and Their Solutions ................................................52
Status LED ............................................................................................53
5.4 How to Contact Raymarine ..................................................................54
On the Internet .....................................................................................54
In the US ...............................................................................................55
In Europe ..............................................................................................56
Worldwide Support ..............................................................................56
Appendix: Specifications............................................ ............................... ....... 57
General ............................ ................................................ ....................57
Sounder Features .................................................................................57
Index ........................... ................................................................... ................... 59
6 DSM25 Owner’s Handbook
Important Information
Intended Use
Raymarine DSM25 Digital Sounder Modules provide echo sounder data that can
be displayed on A65 Multifunction Display units. DSM25s are intended for
recreational depth finding and fish find ing purposes.
Echo sounder systems require an appropriate Raymarine transducer unit and
inter-connecting ca ble. Depending o n the type of transducer connected, the
DSM25 can also display temperature , distance traveled, and/or speed.
This manual contains important information for installing and operating your
DSM25. T o get the best results in operation and performance, please take the time
to read this handbook thoroughly . Raymarine’ s Technical Servic es representatives
or your local dealer will be av ailable to answer any questions you m ay have.
For full details on system integration, please refer to the handbook supplied with
the A65 display .
Safety Notices
This equipment must be installed and operated in accordance with the
instructions contained in this manual. Failure to do so can result in personal injury
and/or navigational inaccuracies . In particular:
7
WARNING: Electrical Safety
The DSM25 contains high voltages. Adjustments requir e
specialized service procedures and tools only available to
qualified service technicians – there are no user serviceable parts
or adjustments. The operator should never remove the cover or
attempt to service the equipment.
Make sure the power supply is switched off before making any
electrical connections.
WARNING: Transducer Cable
Removing the transducer cable from the rear of the sounder
module while it is switched on can cause sparks. Only remove the
transducer cable after power has been removed from the A65
display unit, which supplies power to the DSM. As with any
electronic device, be sure the sounder module is mounted wher e it
is well ventilated and free from gasoline fumes .
8 DSM25 Owner’s Handbook
If the transducer cable is accidentally removed while the DSM25 is
powered on, remove pow er from the sounder module, replace the
transducer cable, and then return power to the module. As a
safety feature, the DSM25 only recognizes that the tr ansducer is
connected at power-up.
CAUTION:
The transducer transmits high frequency ener gy while in use. The
unit should be turned off when swimmers or divers are in close
proximity to the transducer . (There is a lack of scientifically sound
standards or guidelines for exposure levels and limits to
ultrasound. This notice is precautionary only .)
Ultrasonic Energy
EMC Conformance
All Raymarine equipment and accessories are designed to the best industry
standards for use in the recreational marine environment.
Their design and manufacture conforms to the appropriate Electromagnetic
Compatibility (EMC) standards, but correct installation is required to ensure that
performance is not compromised. Although every effort h as been taken to ensure
that they will perform under all conditions, it is important to understand what
factors could affect the operation of the product .
The guidelines given here describe the conditions for opti mum EMC performance,
but it is recognized that it may not be possible to meet all of these conditions in all
situations. T o ensure the best possible conditions for EMC performance within the
constraints imposed by any location, always ensure the maximum separation
possible between differen t items of electrical equi pment.
For optimum EMC performance, it is recommended that wherever possible:
• Raymarine equipment and cables connected to it are:
• At least 5 ft (1.5 m) from any equipment transmitting or cables carrying
radio signals, e.g., VHF radios , cables and an tennas. In the case o f SSB
radios, the distance should be increased to 7 ft (2 m).
• More than 7 ft (2 m) from the path of a radar beam. A radar beam can normally be assumed to spread 20 degrees above and below the radiating
element.
• The equipment is suppl ied from a separate battery from that used for engine
start. Voltage dr ops below 10 V and starter motor transients can cause the
equipment to reset.
This will not damage the equipment, but may cause the loss of some information and may change the operating mode.
Important Information 9
• Raymarine specified cables are used. Cutting and rejoining these cables can
compromise EMC performance and must be avoided unless doing so is
detailed in the installation manual.
Suppression Ferrites
If a suppression ferrite is attached to a cable, this ferrite should not be removed. If
the ferrite needs to be removed during installation it must be reassembled in the
same position. If a ferrite is packed separately in the carton, it must be installed as
soon as the cables are run.
The following illustration shows typical cable suppression ferrites sometimes
used with Raymarine equipment. T o ensure EMC compliance, always use these
ferrites, if supplied by Raymarine for use with this equipment. If not supplied by
Raymarine, a ferrite is not required for use with this equipment.
D3548-3
Connections to Other Equipment
If your Raymarine equipment is to be con nected to other equipment using a cable
not supplied by Raymarine, the suppression ferrite (if supplied) MUST always be
attached to the cable nearest the Raymarine unit.
Product Disposal
When you want to dispose of t his product at the end of its working life , please do
so in accordance with local regulations .
10 DSM25 Owner’s Handbook
Conventions
Throughout this handbook, the dedicated (labelled) keys are shown in bold
capitals (for example, ENTER). The soft k ey functions , menu names and options
are shown in normal capitals (for example, SCREEN).
Technical Accur acy
The technical and graph ical information contained in this ha ndbook, to the best
of our knowledge, was correct as it went to press . However , the Raymarine policy
of continuous improvement and updati ng may change product specificati ons
without prior notice . As a result, unavoidable dif ferences between the product
and handbook may occur from time to time .
For the latest version of this or any Raymarine document in PDF format, please
click the Owner’ Manuals link on the Customer Support page at
www.raymarine . c om
.
Warranty
T o register your DSM25 Digital Sounder Modul e ownership, pl ease take a few
minutes to fill out the warrant y registration card found at the end of this
handbook. It is very important that you complete the owner infor mation and
return the card to the factory in order to receive full warranty benefits.
Chapter 1: Overview
1.1 Introduction
This handbook describes how to install the DSM25 Digital Sounder Module and
operate it using the A65 display unit. The DSM25 emits and receives sonar signals
from a transducer mounted in the water , then interprets and transmits the data to
the A65 installed on the console.
D7737-1
11
The DSM25 employs a very high transmissi on repetition or “ping” rate which,
along with the digital adaptive high sample rate receiver, ensures that fish and
bottom structure are presented in superb detail and optimal color allocation. The
DSM25 digital bandwidth adaptation adjusts the receiver band width
dynamically from very wide to very narrow, as required by the actual water
conditions. This provides superior fish and bottom detection in all surroundings.
The DSM25 module is waterproof to IPX7 and can be installed either above or
below deck.
The unit includes connections to:
• power and data via the A65
• the transducer
The DSM25 requires a transducer, mounted either thru-hull, in-hull, on the
transom or on a trolling motor. T ransducers can measure water dept h, and if so
equipped, temperature, distance traveled, and/or speed. It is important to
position your transducer correctly .
12 DSM25 Owner’s Handbook
ft
200 kHz
20
0
40
60
43 9
1.2 What the Sounder Displays
When you first view the Fishfinder application on the A65, an image representing
the echoes received by the DSM is displayed. As time passes this image scrolls
from right to left and becomes a record of the data collected. The images at the
right hand side of the display are therefore the most recent.
The Fishfinder window will display:
• The bottom together wi th any bottom structure such as reefs and shipwrecks
• T arget images indicating fish
• The bottom depth
Y ou can customize the sounder to:
• Display or hide the depth of the targets
• Display or hide the depth lines
• Change the color palette
• Change the zoom level
• Pause the scrolling image
• Display White Line or Bottom Fill features
• Enable a fish, shallow or deep water alarm
Frequency
Bottom of
transducer
Target depth
Bottom depth
43
FISHFINDER
FISHFINDER
SETTINGS
SETTINGS
42
44
ZOOM
ZOOM
47
34
BOTTOM
BOTTOM
LOCK
LOCK
36
47
44
A-SCOPE
A-SCOPE
43
44
PRESENTATION
PRESENTATION
Depth
markers
Target
images
Bottom
Range
D7910-1
Chapter 1: Overview 13
1.3 How the Fishfinder Works
The F ishfinder application uses the DSM25 to process sonar signals from a
suitable transducer and provide a detailed underwater view .
The transducer located on t he bottom of the boat sends pulses of sound w aves
into the water and measures the time it tak es for the sound w ave to travel to the
bottom and back. T he returning sound echoes are affected by bottom structure
and by any other objects in their path, such as fish, wrecks, or reefs.
The sounder module processes these echoes and sends data to the A65 which
displays a visual interpretation of the underwater view . The strength of echoes is
indicated on the display by different colors. Y ou can use this information to
determine the bottom structure, the size of fish and other objects in the water .
Notes: (1)
Interpreting the Bottom Structure
The bottom usually prod uces a strong echo. T hese images indicate the bottom
conditions as follows:
A hard bottom (sand) produces a thin line
The DSM can operate at a frequency of 50 kHz or 200 kHz.
(2)
Some transducers will also enable the A65 to display water tem perature
and/or speed.
A soft bottom (mud or seaweed cover) produces a wide line. The dark
layer indicates a strong signal.
-
A rocky or uneven bottom or a wreck produces an irregular image with
peaks and troughs
D6855-1
14 DSM25 Owner’s Handbook
The dark layers indicate a good echo; the lighter areas weaker echoes. T his could
mean that the upper layer is soft and therefore allowing sound waves to pass to
the more solid layer below .
It is also possible that the sound waves are making two complete trips – hitting
the bottom, bouncing off the boat, then reflecting off the bottom again. This can
happen if the water is shallow, the bottom is hard, or gain is set high.
How Targets ar e Displayed
When a target is detected, it is displayed on screen as a mark. The shape and si ze
of this mark is influenced by a combination of factors:
Boat speed
The shape of the target changes along with your speed. Slower speeds return
flatter , more horizontal marks. As your bo at’s speed increases , the target will tend
to thicken and arch slightly until at fast speeds the mark resemb les a double
vertical line.
The depth of the target
The closer the target to the surface the larger the mark on screen.
Note:
The depth of individual targets can be displayed by switching on the Targ et Depth
ID in the Fishfinder Alarms Setup Menu.
The size of the target
The larger the target, the larger the retur n on the fishfinder display . T he size of a
fish target is however dependent upon the size of the fish’ s swim bladder rather
than its overall size. This swim bladder will vary in size between different breeds of
fish.
The frequency of the transducer
The same target will appear differently when the transducer frequency is
changed. The lower the frequency the broader the mark.
Chapter 1: Overview 15
Target
Depth ID
Target
Although weaker tha n the fish or bottom echoes , your fishfinder picture may be
impaired by echoes received from floating or su bmerged debris , air bubbles or
from your boat’s movements. This is known as background noise or clutter and is
controlled by the gain modes (gain, color gain and TVG). Raymarine recommends
that you enable your system to automatically control the ideal sensitivity level
based on depth and water conditions . Y ou can however adjust these settings
manually if you prefer .
1.4 How to Use this Handbook
This handbook describes how to install and operate a DSM25 with your A65
display unit.
Chapter 2 provides planning considerations and detailed instructions for
installing the DSM25 and connecting the sounder module to the display unit.
Chapter 3 shows how to operate the A65 display to view sonar echo data and
details operating the A65’s controls in F ishfinder mode.
Chapter 4 provides instructions for setting up your DSM25 to suit your
preferences.
Chapter 5 provides information on user maintenance and what to do if you
experience problems.
The Appendix lists abbreviations used in this handbook.
The following figure displays the DSM25 as part of the A65 system:
16 DSM25 Owner’s Handbook
Power Supply
D7746-1
RS12 GPS
DSM25
A65 Display
Transducer
Chapter 2: DSM25 Installation
2.1 Introduction
This chapter provides details for mounting the DSM25 and connecting to the A65
display.
For the system to display depth, water temperature and speed, you must install
the transducer type(s) capable of transmitting the approp riate data.
Planning the Installation
Before you install your system, plan the installation, considering:
• Correct transducer for your applic ation
• Location of the sounder module , as described in Sectio n 2.4
2.2 Unpacking and Inspecting the Components
Unpack your system carefully , to prevent damage to the equipment. Save the
carton and packing, in case you need to return the unit for service.
Check that you have all the correct system components:
17
Digital Sounder Module,
part no. E63070
Mounting Screws,
No.8 (x2)
DSM25
Owner's
Handbook
Owner’s Handbook,
part no. 81254
Power/Data Cable, 3.5m
part no. R69086
D7738-2
18 DSM25 Owner’s Handbook
2.3 Optional Equipment
If a longer connection is required from the DSM to the display, you can purchase
one of the following A65 Network Cables from Raymarine. Be sure to inst all the
suppression ferrites, if supplied.
Description Part No
A65 Network Cable, 8.5m E36015
A65 Network Cable 15m E36016
2.4 Selecting Sounder Module Mounting Location
The DSM25 is waterpr oof to IPX-7 is and is designed to be mounted either above
or below deck.
Mount the DSM25 where it i s:
• protected from physical damage and excessive vibration
• protected from prolonged exposure to rain, salt spray and direct sunlight
• well ventilated
• as close to the transducer as possible
Do not locate the DSM25:
• in the engine compartment
• on the main console
When planning the installation, the followi ng should be considered to ensure
reliable and trouble free operation:
•
Access: T here must be suff icient space below the unit to enab le cable con-
nections to the panel connectors, avoiding tight bends in the cable.
•
Interference: T he selected location should be far enough away from
devices that may cause interference, su ch as motors, generators , and radio
transmitter/receivers. (See “EMC Conformance“ on page 8.)
•
Magnetic compass: Mount the unit at least 3 ft (1 m) away from a magnetic
compass.
•
Cable runs: The unit must be located near the A65 display . The cable sup-
plied is 11.5 ft (3.5 m) in length. Longer network cables are available as
described in Section2.3.
•
Environment: Good ventilation is required to prevent the unit from over-
heating.
Chapter 2: DSM25 Installation 19
• Status LED: Mount the unit where you can view the status LED on the front
fascia. See page 53 for details.
Status LED
D8722-1
CAUTION: Do Not Remove T ransducer Cable when Power ed On
Removing the transducer cable from the DSM25 while power is
turned on can cause sparks. As with any electronic device, be sure
the sounder module is mounted where it is well ventilated and
free from gasoline fumes.
2.5 Mounting the Sounder Module
The DSM25 can be mounted either above or below deck using the supplied
hardware. T o allow for ease of cable connection, mount the sounder module so
that the cables hang below the unit.
The following figure displays dimensions for the DSM25.
T o mount the DSM25:
1. Hold the module in the location where you want to mount it, making sure it is
perpendicular to the deck.
2. Mark the location of the two key holes o nto the mounting surface .
Refer to the following figure.
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