Raymarine L1250DRC User guide

HD Series
Fishfinders
Owner’s
Handbook
Document number: 81213_1
Date: February 2003
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HD Series Fishfinders iii
HD Series Fishfinders
Owner’s Handbook
February 2003
Intended Use
Raymarine HD (High Definition) Series Fishfinders are intended for
recreational fishfinding. The combined Fishfinder/Chartplotter (RC) devices
are intended for recreational fishfinding and course chartplotting. The
optional chartplotter function is intended as an aid to navigation and should
not be relied upon as a substitute for official navigation charts.
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:
1. HIGH VOLTAGE. The LCD display and digital sounder units contain
high voltages. Adjustments require 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 unit cover or
attempt to service the equipment.
CAUTION:
Removing the transducer cable from the fishfinder display or the
DSM250 while the unit is powered on can cause sparks. Only remove the
transducer cable after power has been removed. As with any electronic
device, be sure the units are mounted where it is well ventilated and free
from gasoline fumes.
If the transducer cable is accidentally removed while the DSM250 is powered
on, remove power from the sounder module, replace the transducer cable, and
then return power to the module. As a safety feature, the DSM250 recognizes
that the transducer is connected only at power-up.
2. NAVIGATION AID. The chartplotter unit is only an aid to navigation. Its
accuracy can be affected by many factors, including equipment failure or
defects, environmental conditions, and improper handling or use. It is the
user’s responsibility to exercise common prudence and navigational
judgements. This unit should not be relied upon as a substitute for such
prudence and judgement.
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iv HD Series Fishfinders
EMC Conformance
All Raymarine equipment and accessories are designed to the best industry
standards for use in the recreational marine environment.
The design and manufacture of Raymarine equipment and accessories
conform to the appropriate Electromagnetic Compatibility (EMC) standards,
but correct installation is required to ensure that performance is not
compromised.
Preface
This handbook describes the following Raymarine HD Series Fishfinder
systems:
• L770D Plus 7" Color LCD Fishfinder Display with DSM250 Digital
Sounder Module
• L770DRC Plus 7" Color LCD Fishfinder and Chartplotter Display with
DSM250 Digital Sounder Module
• L1260D Plus 10" Color LCD Fishfinder Display with DSM250 Digital
Sounder Module
• L1260DRC Plus 10" Color LCD Fishfinder and Chartplotter Display with
DSM250 Digital Sounder Module
The combined Fishfinder/Chartplotter display units include a cartridge holder
assembly that contains two slots for C-MAP NT or NT+ chart cards.
Digital Sounder
HD Series Fishfinders come packaged with a DSM250 Sounder Module,
which provides digital echo sounder image data via
hsb
2
. The DSM250 digital
bandwidth filter adjusts the receiver band width dynamically from very wide
to very narrow, as required by the actual water and seabed conditions. This
provides superior fish discrimination and bottom structure details in
conditions where other fishfinders, which have a fixed bandwidth, see very
little or nothing at all. The DSM250 employs a very high transmission
repetition or “ping” rate which, along with the digital adaptive high sample
rate receiver, ensures that the entire water column is presented in superb detail
and optimal color allocation.
This handbook contains very important information on the installation and
operation of your new fishfinder system. To obtain the best results in operation
and performance, please read this handbook thoroughly.
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HD Series Fishfinders v
Transducer
Echo sounder systems require an appropriate Raymarine transducer unit and
inter-connecting cable. Details for selecting and installing the transducer are
described in document number 81196, Transducers for Fishfinders Owner’s
Handbook.
WARNING:
Do not cut the transducer cable or remove the connector.
Do not try to shorten or splice the cable. Cutting the transducer cable will
severely reduce sonar performance.
If the cable is cut, it must be replaced—it cannot be repaired.
CUTTING THE TRANSDUCER CABLE WILL VOID THE
WARRANTY.
TFT LCD Displays
The colors of the display may seem to vary when viewed against a colored
background or in colored light. This is a perfectly normal effect that will be
seen with all color LCD displays.
In common with all Thin Film Transistor (TFT) LCD displays, the screen may
exhibit a few (less than 20) wrongly illuminated pixels. These may appear as
black pixels in a light portion of the screen or as colored pixels in black areas.
WARNING:
To provide protection against the damaging effects of UV light,
Raymarine advises that you replace the sun cover provided when the
color LCD display is not in use.
Conventions Used
Throughout this handbook, the dedicated (labelled) keys are shown in bold
capitals (for example: MENU). The soft key functions, menu names and
options are shown in normal capitals (for example: SCREEN).
Operating procedures, which may consist of a single key-press or a sequence
of numbered steps, are indicated by a ➤symbol in the margin.
When the procedure requires you to press a soft key, the soft key icon is shown
in the margin.
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vi HD Series Fishfinders
Technical Accuracy
To the best of our knowledge, the technical and graphical information
contained in this handbook was correct as it went to press. However, the
Raymarine policy of continuous improvement and updating may change
product specifications without prior notice. As a result, unavoidable
differences between the product and handbook may occur from time to time,
for which liability cannot be accepted by Raymarine.
Warranty
To register your DSM250 Digital Sounder Module ownership, please take a
few minutes to fill out the warranty registration card found at the end of this
handbook. It is very important that you complete the owner information and
return the card to the factory in order to receive full warranty benefits.
WARNING:
CUTTING THE TRANSDUCER CABLE WILL VOID THE
WARRANTY.
OPENING A SEALED UNIT BY ANYONE OTHER THAN
QUALIFIED SERVICE TECHNICIANS WILL ALSO VOID THE
WARRANTY.
Raymarine Products and Services
Raymarine products are supported by a network of Authorized Service
Representatives. Raymarine’s Technical Services representatives or your
local dealer will be available to answer any questions you may have.
For information on Raymarine products and services, contact either of the
following:
United States Raymarine, Inc.
22 Cotton Road, Unit D
Nashua, NH 03063-4219
USA
Telephone: [phone]
1-800-539-5539
Fax: [phone]
Europe Raymarine Ltd
Anchorage Park
Portsmouth, Hampshire
England PO3 5TD
Telephone: [phone]
Fax: [phone]
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HD Series Fishfinders vii
Or, you may contact us on the World Wide Web at www.raymarine.com.
Raymarine is a registered trademark of Raymarine Limited.
SeaTalk is a registered trademark of Raymarine Limited.
hsb
2
is a trademark of Raymarine Limited.
Pathfinder Plus is a trademark of Raymarine Limited.
This product contains technology provided under license by Acorn Group plc.
The copyright of this intellectual property is acknowledged by Raymarine,
Inc. as are Acorn’s trademarks and patents. Acorn’s world wide web address is
http://www.acorn.com.
© Raymarine, Inc. 2003
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viii HD Series Fishfinders
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ix
Contents
Intended Use .............................................................................. iii
SAFETY NOTICES................................................................... iii
EMC Conformance ..................................................................... iv
Preface .................................................................................................iv
TFT LCD Displays....................................................................... v
Conventions Used ........................................................................ v
Technical Accuracy .....................................................................vi
Warranty ......................................................................................vi
Raymarine Products and Services ...............................................vi
Chapter 1: Overview ......................................................................................... 1-1
1.1 Introduction .................................................................................. 1-1
General .......................................................................................... 1-4
Operating Modes .......................................................................... 1-6
The
hsb
2
System ............................................................................ 1-8
1.2 The Fishfinder Display ................................................................. 1-8
Fishfinder Options ...................................................................... 1-10
Fishfinder Functions ................................................................... 1-11
1.3 The Chartplotter Display ............................................................ 1-13
Chartplotter Display Options ...................................................... 1-14
Chartplotter Functions ................................................................ 1-16
Chapter 2: Installation ..................................................................................... 2-1
2.1 Introduction .................................................................................. 2-1
Planning the Installation ............................................................... 2-2
EMC Installation Guidelines ........................................................ 2-2
2.2 Unpacking and Inspecting the Components ................................. 2-4
2.3 Selecting the Equipment Location ................................................ 2-6
Display Unit Mounting Location .................................................. 2-6
Sounder Module Mounting Location ........................................... 2-9
2.4 Cable Runs .................................................................................. 2-10
2.5 Mounting the Display Unit ......................................................... 2-12
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x HD Series Fishfinders
2.6 Mounting the Sounder Module ................................................... 2-13
2.7 Display Unit Connections ........................................................... 2-15
DC Power and NMEA Connection ............................................. 2-15
Transducer Connection ............................................................... 2-17
HSB (
hsb
2
) Connection ............................................................... 2-18
2.8 DSM250 Connections ................................................................ 2-19
DC Power Connection ................................................................ 2-19
Ground Connection .................................................................... 2-20
Transducer Connection ............................................................... 2-21
EMC Conformance ..................................................................... 2-23
2.9 Integrated Systems ...................................................................... 2-24
High Speed Bus (
hsb
2
) ................................................................ 2-25
SeaTalk and NMEA In ................................................................ 2-27
2.10 Integrated System Checks .......................................................... 2-34
Chart Display .............................................................................. 2-34
Received Data ............................................................................. 2-34
Transmitted Data ........................................................................ 2-34
Chapter 3: Getting Started .............................................................................. 3-1
3.1 Introduction .................................................................................. 3-1
3.2 Switching the Units On and Off .................................................... 3-1
Powering the Sounder Module ..................................................... 3-1
Powering the Display Unit ............................................................ 3-1
3.3 Operating Controls ....................................................................... 3-5
Trackpad and Cursor ..................................................................... 3-6
Dedicated Keys ............................................................................. 3-8
Soft Keys ....................................................................................... 3-9
Pop-Up Menus ............................................................................ 3-10
Database Lists ............................................................................. 3-11
3.4 Simulator Mode .......................................................................... 3-11
Viewing Simulator Data ............................................................. 3-12
Chapter 4: System Setup .................................................................................. 4-1
4.1 Introduction .................................................................................. 4-1
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xi
4.2 Changing the Set Up Parameters .................................................. 4-2
4.3 System Set Up Parameters ............................................................ 4-4
Data Boxes .................................................................................... 4-6
Bearing Mode ............................................................................... 4-6
Cursor Reference .......................................................................... 4-6
Cursor Readout ............................................................................. 4-7
Day/Night ..................................................................................... 4-7
Help ............................................................................................... 4-7
Soft Keys ....................................................................................... 4-7
Key Beep ...................................................................................... 4-7
MOB Data ..................................................................................... 4-8
Autopilot Pop Up .......................................................................... 4-8
Menu Timeout Period ................................................................... 4-8
Units .............................................................................................. 4-8
Variation Source ........................................................................... 4-8
Bridge NMEA Heading ................................................................ 4-9
NMEA-Out Set Up ..................................................................... 4-10
Cursor Echo ................................................................................ 4-11
Date and Time Settings ............................................................... 4-12
GPS SOG/COG Filter ................................................................. 4-12
Compass Set Up .......................................................................... 4-12
Language .................................................................................... 4-12
Simulator .................................................................................... 4-13
4.4 Sonar Set Up Parameters ............................................................ 4-13
Target Depth ID .......................................................................... 4-14
Color Bar ..................................................................................... 4-14
Depth Digit Size .......................................................................... 4-14
Sonar HSB Mode ........................................................................ 4-14
Depth Offset ................................................................................ 4-15
Speed Calibrate ........................................................................... 4-15
Temperature Calibrate ................................................................ 4-15
Sonar History .............................................................................. 4-15
Sonar Interference Rejection ...................................................... 4-15
Sonar Simulator .......................................................................... 4-16
Version/Serial Numbers .............................................................. 4-16
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xii HD Series Fishfinders
4.5 Chart Set Up Parameters (Raychart Models) .............................. 4-17
Customize Chart ......................................................................... 4-17
Plotter Mode ............................................................................... 4-18
Chart Orientation ........................................................................ 4-18
Object Information ..................................................................... 4-19
Palette ......................................................................................... 4-19
Waypoint Options ....................................................................... 4-19
Vectors ........................................................................................ 4-19
Radar/Chart Synch ...................................................................... 4-20
Datum Selection ......................................................................... 4-20
Position Offset ............................................................................ 4-20
Chapter 5: Adjusting the Display .................................................................... 5-1
5.1 Introduction .................................................................................. 5-1
Simulator ...................................................................................... 5-1
Changing the Brightness & Color Settings ................................... 5-1
5.2 Controlling the Display ................................................................. 5-4
Selecting the Mode of Operation .................................................. 5-4
Switching Between Sounder and Other Modes .......................... 5-10
5.3 Display Unit Control Functions .................................................. 5-11
Viewing Data Boxes ................................................................... 5-11
Changing the Scroll Speed .......................................................... 5-11
Selecting the Power Setting ........................................................ 5-13
Changing the Range .................................................................... 5-13
Selecting the Frequency .............................................................. 5-16
Using Bottom Lock ..................................................................... 5-17
Using A-Scope ............................................................................ 5-19
Using Zoom ................................................................................ 5-20
5.4 Chart Display Control Functions (Raychart Models) ................. 5-23
Customizing the Screen Presentation Options ............................ 5-23
Moving Around the Chart ........................................................... 5-25
Chapter 6: Sonar Operations ........................................................................... 6-1
6.1 Introduction .................................................................................. 6-1
6.2 Interpreting and Adjusting the Fishfinder Image .......................... 6-1
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xiii
Fish Indications ............................................................................. 6-2
Bottom Indications ....................................................................... 6-3
Using White Line .......................................................................... 6-4
Adjusting Display Gain (Sensitivity) ........................................... 6-5
6.3 Using Alarms ................................................................................ 6-8
6.4 Using VRM to Determine Depth & Distance from Boat .............. 6-9
6.5 Waypoints ................................................................................... 6-11
Placing a Waypoint ..................................................................... 6-11
6.6 MOB ........................................................................................... 6-13
Chapter 7: Standard Chart Operations .......................................................... 7-1
7.1 Introduction .................................................................................. 7-1
7.2 Using Chart Cards ......................................................................... 7-2
Inserting a Chart Card ................................................................... 7-2
Removing a Chart Card ................................................................ 7-3
Displaying the Chart Data ............................................................. 7-3
Displaying Chart Object and Source Information ........................ 7-4
7.3 Working with Waypoints .............................................................. 7-8
Introduction .................................................................................. 7-8
Placing a Waypoint ....................................................................... 7-9
Selecting a Waypoint .................................................................. 7-12
Waypoint Data Display ............................................................... 7-13
Editing the Waypoint Details ...................................................... 7-13
Erasing a Waypoint ..................................................................... 7-15
Moving a Waypoint .................................................................... 7-15
Using the ST60 or ST80 Navigator Keypad ............................... 7-16
7.4 Working with Routes .................................................................. 7-18
Creating a New Route ................................................................. 7-19
Saving the Current Route ............................................................ 7-22
Clearing the Current Route ......................................................... 7-24
Retrieve a Route From the Database ........................................... 7-24
Displaying Route Information .................................................... 7-25
Using the Route List to Erase and Name a Route ....................... 7-27
Editing a Route ........................................................................... 7-28
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xiv HD Series Fishfinders
7.5 Following Routes and Going to Points ....................................... 7-30
Follow a Route ............................................................................ 7-30
Target Point Arrival .................................................................... 7-31
Other Follow Route Options ....................................................... 7-32
Going To an Individual Target Point ........................................... 7-33
Stop Follow or Stop Goto ............................................................ 7-34
7.6 Transferring Waypoints and Routes ........................................... 7-35
7.7 Using Tracks ............................................................................... 7-39
Setting Up a Track ......................................................................7-40
Clearing the Current Track ......................................................... 7-40
Managing Tracks ........................................................................ 7-40
SmartRoute ................................................................................. 7-42
7.8 Typical Chart Scenarios .............................................................. 7-43
Place and Goto a Waypoint ......................................................... 7-44
Make and Follow a Route ........................................................... 7-46
Review Your Passage Plan .......................................................... 7-48
Chapter 8: Advanced Chart Operations ......................................................... 8-1
8.1 Introduction .................................................................................. 8-1
8.2 Measuring Distances Using the VRM/EBL Key .......................... 8-2
8.3 Alarms and Timers ........................................................................ 8-4
Alarm Reporting ........................................................................... 8-4
Setting Alarms and Timers ........................................................... 8-5
8.4 Man Overboard (MOB) ................................................................ 8-6
8.5 Cursor Echo .................................................................................. 8-7
8.6 Radar Overlay ............................................................................... 8-7
8.7 GPS Setup ..................................................................................... 8-9
8.8 Data Log Mode ...........................................................................8-10
Chapter 9: Maintenance and Problem Solving ............................................. 9-1
9.1 Maintenance ................................................................................. 9-1
Routine Checks ............................................................................. 9-1
Cleaning Instructions .................................................................... 9-2
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xv
EMC Servicing and Safety Guidelines ......................................... 9-3
9.2 Resetting the System ..................................................................... 9-4
Display Unit Resets ...................................................................... 9-4
Sounder Module Reset .................................................................. 9-5
9.3 Problem Solving ........................................................................... 9-6
Common Problems and Their Solutions ....................................... 9-6
Status LED .................................................................................... 9-7
9.4 Updating Software on the Display Unit ........................................ 9-8
9.5 How to Contact Raymarine .......................................................... 9-9
On the Internet .............................................................................. 9-9
In the US ....................................................................................... 9-9
In Europe ..................................................................................... 9-11
Worldwide Support ..................................................................... 9-11
Appendix A: Specifications ...............................................................................A-1
HD Series Fishfinder Displays .................................................... A-1
DSM250 Digital Sounder Module ............................................... A-4
Appendix B: Using the Auxiliary Junction Box ................................................B-1
Raystar 112, 105, Apelco 182 and 182XT ................................... B-2
Autohelm GPS, Z260 and Z273 .................................................. B-3
Raystar 112LP (SeaTalk version) ................................................ B-4
Raystar 114 Combined GPS and Differential Beacon Receiver .. B-5
Raystar 120 WAAS Satellite Differential Receiver ..................... B-6
Appendix C: C-MAP Chart Card Features ........................................................ C-1
Appendix D: SeaTalk and NMEA Data ..............................................................D-1
Appendix E: Abbreviations ............................................................................... E-1
Index ........................................................................................................... i
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xvi HD Series Fishfinders
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Chapter 1: Overview 1-1
Introduction
Chapter 1: Overview
1.1 Introduction
This handbook describes the following HD Series Fishfinders:
Raymarine HD Series Fishfinders use the latest processor and sonar
technology for accurate performance and echo detection. Units feature 7" or
10.4" daylight viewable color LCD displays and the Raychart (RC) models
include a full C-Map NT/NT+ Chartplotter.
L770D/RC Plus and L1260D/RC Plus Fishfinders come packaged with a
DSM250 Sounder Module, which provides digital echo sounder image data
via
hsb
2
. The DSM250 digital bandwidth filter adjusts the receiver band width
dynamically from very wide to very narrow, as required by the actual water
and seabed conditions. This provides superior fish discrimination and bottom
structure details in conditions where other fishfinders, which have a fixed
bandwidth, see very little or nothing at all. The DSM250 employs a very high
transmission repetition or “ping” rate which, along with the digital adaptive
high sample rate receiver, ensures that the entire water column is presented in
superb detail and optimal color allocation.
HD Series Fishfinders feature dual frequency (200 kHz and 50 kHz) operation
and—depending on the transducer installed and conditions—up to 1000 watts
RMS output power and performance from 3 ft (1m) up to 5000 ft (1700 m).
Use the High Speed Bus (
hsb
2
), SeaTalk, and NMEA interfaces to provide an
integrated system with additional devices, such as Pathfinder Plus Radar,
Raymarine Autopilot, and Raystar Wide Area Augmentation System
(WAAS) GPS products.
Connecting an HD Series Fishfinder to an
hsb
2
Series Pathfinder Plus Radar
and to an
hsb
2
Series Plus Chartplotter enables fishfinder, radar, and chart data
to be displayed on all three units. Similarly, chart data can be repeated on a
fishfinder-only device from any via
hsb
2
from any other hsb
2
device with chart
capabilities.
Fishfinder Display Type Display Size Chartplotter Digital Module
L770D Plus
L770DRC Plus
Color LCD
Color LCD
7 inch
7 inch
No
Yes
Yes
Yes
L1260D Plus
L1260DRC Plus
Color LCD
Color LCD
10.4 inch
10.4 inch
No
Yes
Yes
Yes
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1-2 HD Series Fishfinders
Introduction
This handbook describes the display unit controls and details both fishfinder
and chart operations. Controls that are specific to either fishfinder or
chartplotter are described in fishfinder or chart sections/chapters.
Note: Many illustrations in this handbook show example screens. The screen
you see on your display depends on your system configuration and set up op-
tions, so it may differ from the illustration.
How to Use This Handbook
If you are installing the display system yourself, you should read Chapter 2
before you start the installation. This chapter also provides information that
will be useful if you are connecting your fishfinder system to other equipment.
For an overview of the display unit controls, the fishfinder and the chartplotter
systems, read Chapter 1. Chapter 3 will help you start using your system.
For detailed information on sonar operations refer to Chapter 6.
For chartplotter operating details, refer to Chapter 7 and Chapter 8.
To change the system set up defaults, read Chapter 4.
Chapter 2 provides planning considerations and detailed instructions for
installing the fishfinder display unit and sounder module. You should refer to
it when you are ready to install the system. Details to connect the display to
other equipment via
hsb
2
, NMEA, and SeaTalk are also provided.
Chapter 3 explains how to start using the display and describes how to use
some of the basic fishfinder and chart functions and Simulator Mode.
Chapter 4 provides instructions for setting up your system to suit your
preferences. You should read this chapter to determine how to change the
fishfinder and chartplotter system from the default settings.
Chapter 5 details operating the display unit’s controls in Sonar mode.
Chapters 6 provides detailed operating information for the sonar functions:
selecting depth range limits, adjusting gain, color and STC, setting alarms,
using the VRM marker, marks and man overboard.
Chapter 7 provides detailed operating information for the standard
chartplotter functions: using chart cards, plotting waypoints and routes,
following routes and showing tracks. Chapter 7 also provides operating
guidelines for typical chartplotter scenarios. These guidelines introduce you
to many of the chartplotter functions.
Chapter 8 provides detailed operating information for further chart functions,
including measuring distances, man overboard and cursor echo. It includes
instructions for setting up a differential GPS.
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Chapter 1: Overview 1-3
Introduction
Chapter 9 provides information on user maintenance and what to do if you
experience problems.
The Appendices provide additional information that you may find useful:
Appendix A lists the technical specifications for the fishfinder, sounder
module, and chartplotter.
Appendix B provides details on connecting the display unit to specific GPS
systems.
Appendix C defines the chart features shown on the chart display.
Appendix D defines the SeaTalk and NMEA data that is transferred on
integrated systems.
A List of Abbreviations, Index, and Warranty information are included at
the end of the handbook.
A summary of the fishfinder and chartplotter controls are provided on the
Quick Reference Cards supplied with your system.
Terminology
The following terminology is used to describe the various display unit
configurations:
Master A unit capable of sourcing specific data such as
Sonar, Chart, or Radar data.
Repeater A unit capable of displaying data from the High
Speed Bus. For example, the fishfinder display
is a repeater of sonar data from the DSM250.
Fishfinder Display Unit providing Sonar Master and Radar
Repeater functionality. The L760DRC and
L1250DRC Plus displays also provide Chart
Master functionality.
Radar Display Unit providing Radar Master, Sonar Repeater,
and Chart Reader functionality.
Chart Display Unit providing Chart Master, Sonar Repeater,
and Radar Repeater functionality.
Combined Display Unit providing both Sonar and Chart or Radar
and Radar Repeater functionality.
Integrated System Additional instruments that are connected via
hsb
2
, SeaTalk, or NMEA interfaces.
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1-4 HD Series Fishfinders
General
General
The HD Series Fishfinder system, illustrated below, is comprised of the 7" or
10.4" LCD display unit, DSM250 Digital Sounder Module, fishfinder
transducer, and associated cables.
Figure 1-1: Basic HD Fishfinder System
Display Unit
The HD Series Fishfinder system is waterproof to CFR46 and can be installed
either above or below deck.
The fishfinder display includes:
• 7" or 10.4" LCD display
• Trackpad
• Eleven dedicated (labeled) control keys
• Four soft keys (unlabeled) whose functionality changes
• Two slots for the C-MAP NT®or NT+ chart cards (Raychart models only)
Digital Sounder
Module
A separate box containing ciruitry for receiving
digital sonar data images. These images are
transmitted via
hsb
2
to the fishfinder display.
hsb
2
High Speed Bus: Links up to ten compatible
display units. For full display and control
between
hsb
2
Plus display units, the units must
be connected via
hsb
2
and SeaTalk.
PLUS Display Unit
D6160-2
Transducer
Digital Sounder Module
hsb
2
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