Garmin GPSMAP-188 manual

GPSMAP ® 188/188C Sounder chartplotting receiver owner’ s manual (GPSMAP 188C shown)[...]

© Copyright 2005 Garmin Ltd. or its subsidiaries Garmin International, Inc. 1200 East 151 st Street, Olathe, Kansas 66062, U.S.A. T el. 913/397.8200 or 800/800.1020 Fax 913/397.8282 Garmin (Europe) Ltd. Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey , SO51 9DL, U.K. T el. 44/0870.8501241 Fax 44/0870.8501251 Garmin Corporation No. 68,[...]

GPSMAP 188/188C Sounder Owner ’s Manual i I NTRODUCTION > A BOUT T HIS M ANUAL I NTRODUCTION Thank you for choosing the Garmin ® GPSMAP ® 188/188C Sounder . T ake a moment now to compare the contents of this package with the packing list on the outside of the box. If any pieces are missing, contact your Garmin dealer immediately . Before you[...]

ii GPSMAP 188/188C Sounder Owner ’s Manual I NTRODUCTION > T ABLE OF C ONTENTS T able of Contents Introduction ...........................................................................i About This Manual ................................................................... i Care Information ....................................................[...]

GPSMAP 188/188C Sounder Owner ’s Manual iii I NTRODUCTION > T ABLE OF C ONTENTS Pages T ab ............................................................................... 63 Map T ab .................................................................................. 64 General Sub T ab ...........................................................[...]

iv GPSMAP 188/188C Sounder Owner ’s Manual I NTRODUCTION > C ARE I NFORMA TION Care Information Cleaning the Unit The GPSMAP 188/188C Sounder is constructed of high quality materials and does not require user maintenance other than cleaning. Clean the unit using a cloth dampened with a mild detergent solution and then wipe dry . A void chemica[...]

GPSMAP 188/188C Sounder Owner ’s Manual 1 B ASIC O PERA TION > I NITIALIZING THE R ECEIVER B ASIC O PERA TION Initializing the Receiver The first time you turn on the GPSMAP 188/188C Sounder , the receiver must be given an opportunity to collect satellite data and establish its present location. T o ensure proper initialization, the GPSMAP 18[...]

2 GPSMAP 188/188C Sounder Owner ’s Manual B ASIC O PERA TION > I NITIALIZING THE R ECEIVER T o graphically initialize the GPSMAP 188/188C Sounder: 1. Press MENU twice for the Main Menu. Press up or down on the ROCKER until the GPS tab is highlighted, and then press MENU once. 2. Using the ROCKER , highlight Initialize Position , and press ENTE[...]

GPSMAP 188/188C Sounder Owner ’s Manual 3 B ASIC O PERA TION > S IMULA TOR M ODE Simulator Mode Simulator Mode turns the GPS receiver off for use indoors or practice. Any of the functions discussed in the following pages can be performed in Simulator Mode. While in Simulator Mode, a “Running Simulator” message appears after 2 minutes of in[...]

4 GPSMAP 188/188C Sounder Owner ’s Manual B ASIC O PERA TION > A DJUSTING THE B ACKLIGHT The Set Position, T rack Control, T rack and Speed fields only show while in Simulator Mode. T o enter a simulated speed and heading from the Main Menu: 1. Press MENU twice to display the Main Menu. 2. Use the ROCKER to highlight the Systm tab, press righ[...]

GPSMAP 188/188C Sounder Owner ’s Manual 5 B ASIC O PERA TION > I NTERF ACE K EYS Interface Keys NA V Key • Press and release at any time to view the Navigation menu. QUIT Key • Press and release to cancel data entry or exit a page. ROCKER Key • Press up/down or right/left to move through lists, highlight fields, on-screen buttons and ic[...]

6 GPSMAP 188/188C Sounder Owner ’s Manual B ASIC O PERA TION > E NTERING D A T A AND S ELECTING O PTIONS Entering Data and Selecting Options Y ou can select and start options, and enter data to customize the GPSMAP 188/188C Sounder to fit your requirements. Use the ENTER key and the ROCKER to select options, enter names and numbers in data ?[...]

GPSMAP 188/188C Sounder Owner ’s Manual 7 B ASIC O PERA TION > U SING THE M AP P OINTER Using the Map Pointer W orking from the Map Page centers around the use of the pointer . Controlled by the ROCKER , the pointer is used to pan to map locations, mark and edit waypoints and routes, and review position data of on-screen map items and waypoint[...]

8 GPSMAP 188/188C Sounder Owner ’s Manual B ASIC O PERA TION > C REA TING AND U SING W A YPOINTS Creating and Using W aypoints The Garmin GPSMAP 188/188C Sounder stores up to 3,000 alphanumeric waypoints with a user-defined symbol, comments, and depth available for each waypoint. W aypoints can be created using two basic methods: ENTER/MARK K[...]

GPSMAP 188/188C Sounder Owner ’s Manual 9 B ASIC O PERA TION > C REA TING AND U SING W A YPOINTS 5. T o enter optional comments or a depth, highlight the Comments or Depth field to the right of the location coordinates, and press ENTER , use the ROCKER to enter a value, and press ENTER . 6. T o manually enter a set of coordinates, highlight t[...]

10 GPSMAP 188/188C Sounder Owner ’s Manual B ASIC O PERA TION > M AN O VER B OARD (MOB) Man OverBoard (MOB) The GPSMAP 188/188C Sounder ’ s Man OverBoard (MOB) function simultaneously marks and sets a course back to the marked location for quick response to emergency situations. The MOB function allows you to quickly activate navigation back[...]

GPSMAP 188/188C Sounder Owner ’s Manual 1 1 B ASIC O PERA TION > R EVIEWING AND E DITING W A YPOINTS Reviewing and Editing W aypoints W aypoints are reviewed, modified, renamed, moved, or deleted at any time through the W aypoint Edit Page. The W aypoint Edit Page is available for any stored waypoint. Select the waypoint on the map or from th[...]

12 GPSMAP 188/188C Sounder Owner ’s Manual B ASIC O PERA TION > N A VIGA TING TO A D ESTINA TION T o change the waypoint symbol: 1. Highlight the waypoint symbol field to the left of the waypoint name, and press ENTER . 2. Use the ROCKER to select a new symbol, and press ENTER. T o change the Comment, Location, Coordinates, or Depth: 1. Highl[...]

GPSMAP 188/188C Sounder Owner ’s Manual 13 B ASIC O PERA TION > N A VIGA TING TO A D ESTINA TION T o activate a Go T o from a point list: 1. Press the NA V key . Highlight Go T o Point , and press ENTER . 2. From the Find menu, highlight W aypoints or another menu option, and press ENTER . 3. T o select a waypoint from the waypoint lists, use [...]

14 GPSMAP 188/188C Sounder Owner ’s Manual B ASIC O PERA TION > N A VIGA TING TO A D ESTINA TION T o Go T o a new map point (non-map item): 1. Use the ROCKER to move the map pointer to the location you want. 2. Press NA V . 3. With Go T o MAP Point highlighted, press ENTER . T racBack Navigation (Navigating a T rack) The T racBack function ret[...]

GPSMAP 188/188C Sounder Owner ’s Manual 15 B ASIC O PERA TION > N A VIGA TING TO A D ESTINA TION T o clear the track log and define a starting point for a T racBack route: 1. Press MENU twice to display the Main Menu. 2. Using the ROCKER , highlight the T rack tab, and highlight the Active sub tab. 3. Use the ROCKER to select the Erase , and [...]

16 GPSMAP 188/188C Sounder Owner ’s Manual B ASIC O PERA TION > N A VIGA TING TO A D ESTINA TION T o activate a T racBack using the NA V key: 1. Press NA V , highlight the Follow T rack , and press ENTER . 2. Highlight the track you want to follow , and press ENTER . 3. Choose Original to navigate from the start to the end of your trip, or cho[...]

GPSMAP 188/188C Sounder Owner ’s Manual 17 B ASIC O PERA TION > R OUTES Routes Y ou can create and store up to 50 user-defined reversible routes (numbered 1-50), with up to 254 waypoints each. Routes are created and modified in two ways. The first method creates the route using a map page. This method selects points on the map. The second m[...]

18 GPSMAP 188/188C Sounder Owner ’s Manual B ASIC O PERA TION > R OUTES 6. Repeat steps 4 and 5 until you have finished defining all route waypoints. 7. When finished, press QUIT twice to return to the Route List . Highlight Edit as T ext , and press ENTER to return to the Route Review Page. ADD appears below the pointer as you insert point[...]

GPSMAP 188/188C Sounder Owner ’s Manual 19 B ASIC O PERA TION > F IND 6. From the Find menu, highlight W aypoints or another menu item, and press ENTER . From either the By Name or Nearest tab lists, choose a waypoint, and press ENTER . (See page 50 for searching for waypoints by name.) 7. On the W aypoint Review Page, OK is automatically high[...]

20 GPSMAP 188/188C Sounder Owner ’s Manual B ASIC O PERA TION > F IND T o Find an item from your current location: 1. From any page, press FIND . 2. Using the ROCKER , highlight a category from the list, and press ENTER . 3. For W aypoints and Cities, search using By Name or Nearest . Use the ROCKER to highlight a tab. For By Name , use the to[...]

GPSMAP 188/188C Sounder Owner ’s Manual 21 B ASIC O PERA TION > A DDITIONAL I NFORMA TION T o Find an item using the Find options: 1 From any page, press FIND . 2. Using the ROCKER , highlight a category from the list, and press ENTER . 3 From the search results list, press MENU , highlight an option, and press ENTER . Find Menu Options Additi[...]

22 GPSMAP 188/188C Sounder Owner ’s Manual B ASIC O PERA TION > DSC DSC The DSC tab on Main Menu controls and sets up the Digital Selective Calling (DSC) features on the GPSMAP 188/188C Sounder . DSC uses marine VHF radio and Global Positioning System (GPS) technologies to transmit and receive location information. The chartplotter repeats the[...]

GPSMAP 188/188C Sounder Owner ’s Manual 23 B ASIC O PERA TION > DSC Understanding Position Reports A Position Report is similar to a Distress Call except no alarm is sounded. Position Reports are not broadcast to all DSC users and are shown with a boat symbol. Receiving DSC Calls Each time you receive a Distress Call or Position Report, a Noti[...]

24 GPSMAP 188/188C Sounder Owner ’s Manual B ASIC O PERA TION > DSC DSC Call List The DS C Ca ll Lis t di spl ays the 50 mos t r ecen t c alls , e ven if the uni t is lef t un att end ed. The Call Li st disp lay s th e m ost rec ent cal l f rom a ves sel . If a sec ond cal l fr om the sam e v esse l i s re cei ved, it re plac es the fir st c [...]

GPSMAP 188/188C Sounder Owner ’s Manual 25 B ASIC O PERA TION > DSC Navigating to a Position Report or Distress Call After a Position Report or a Distress Call is received, navigation can be quickly set to the call location. T o navigate to Position Report or Distress Call: 1 Press NA V . 2. With Go T o MMSI/Name highlighted, press ENTER . Or [...]

26 GPSMAP 188/188C Sounder Owner ’s Manual M AIN P AGES > O VERVIEW M AIN P AGES Six main display pages are always available: Map Page, Sonar Page, Pointer Page, Numbers Page, Highway Page, and Active Route Page. Y ou can cycle through these pages by pressing either P AGE or QUIT . For information on the Sonar Page, refer to the “Using Sonar[...]

GPSMAP 188/188C Sounder Owner ’s Manual 27 M AIN P AGES > M AP P AGE Map Page The Map Page provides a comprehensive display of electronic cartography , plotting, and navigational data. When in the BlueChart data coverage area or using optional MapSource software, the map display shows your boat on a digital chart, complete with geographic name[...]

28 GPSMAP 188/188C Sounder Owner ’s Manual M AIN P AGES > M AP P AGE Using the Map Pointer The pointer pans away from your present location (even outside of your current detail coverage.) As you pan past the edge of the current map display , the screen actively scrolls forward to provide continuous map coverage. An hourglass symbol appears by [...]

GPSMAP 188/188C Sounder Owner ’s Manual 29 M AIN P AGES > M AP P AGE Use the pointer to create new waypoints directly from the map. T o create a waypoint with the pointer: 1. Use the ROCKER to move the pointer to the map location. 2. Press ENTER . The New Map W aypoint window appears. (If the pointer is on a map item, press ENTER , and a new w[...]

30 GPSMAP 188/188C Sounder Owner ’s Manual M AIN P AGES > M AP P AGE The GPSMAP 188/188C Sounder ’ s system has a built-in worldwide database to 20 mi, with more detailed coverage available through the use of the optional BlueChart or MapSource data. The GPSMAP 188/188C Sounder displays cartography as long as there is chart information avail[...]

GPSMAP 188/188C Sounder Owner ’s Manual 31 M AIN P AGES > M AP P AGE Map Page Options Full Screen Map/Show Data —toggles between the Map Page without or with data fields on the map display . T o maximize the map/show data fields: 1. Highlight Full Screen Map , and press ENTER . The Map Page is now maximized with no data fields. 2. T o sho[...]

32 GPSMAP 188/188C Sounder Owner ’s Manual M AIN P AGES > M AP P AGE Y ou can also merge the four medium default data fields to a single, large field for better readability or you can split any or all of the default data fields to show four small data fields. Single, large data field Default, medium fields Split, small fields Measure Di[...]

GPSMAP 188/188C Sounder Owner ’s Manual 33 M AIN P AGES > P OINTER P AGE Set Up Map —configures the map display preferences, including map detail, map orientation, automatic zoom, and various map items and points. Refer to “Main Menu—Map T ab” on page 64 for more information. T o change a map setup feature: 1. From the Map Page menu, [...]

34 GPSMAP 188/188C Sounder Owner ’s Manual M AIN P AGES > N UMBERS P AGE Bearing Pointer Compass Ring Data Fields Current Go T o Destination Bearing Bug The Pointer Page features a menu page that provides access to layout and data field options. The data window , located at the top of the page, provides a user-selectable layout of various typ[...]

GPSMAP 188/188C Sounder Owner ’s Manual 35 M AIN P AGES > H IGHW A Y P AGE Numbers Page shown with middle data field split into four fields T o split the data fields: 1. Press MENU , and press ENTER . 2. Highlight a data field, and press MENU . 3. Highlight Split Numbers , and press ENTER . Four new data fields appear . Press QUIT to fin[...]

36 GPSMAP 188/188C Sounder Owner ’s Manual M AIN P AGES > H IGHW A Y P AGE The four data fields at the top of the page provide additional user-selectable guidance information. Additionally , a compass ribbon shows your current heading along with a dark vertical bar that indicates the direct bearing to the navigation point. When the dark, vert[...]

GPSMAP 188/188C Sounder Owner ’s Manual 37 M AIN P AGES > A CTIVE R OUTE P AGE Preview Window Highway Page Set Up Check or uncheck the options you want to show/hide on the Highway Page. The following options are available from the Highway Page menu: Set Up Highway —selects what waypoints and tracks are shown on the Highway display . Use the [...]

38 GPSMAP 188/188C Sounder Owner ’s Manual M AIN P AGES > A CTIVE R OUTE P AGE Active Route Page Options The following options are available from the Active Route Page: • Hide/Show Numbers —see page 31 for instructions (same as Map Page option). • Change Numbers —see page 31 for instructions. • Edit on Map —see page 17 for instruct[...]

GPSMAP 188/188C Sounder Owner ’s Manual 39 M AIN M ENU > GPS T AB M AIN M ENU The Main Menu provides access to various waypoint, system, navigation, interface management, and setup menus. The 19 Menu tabs are divided into categories by function. The Main Menu is available from any page in the system, and is accessed by pressing MENU twice. See[...]

40 GPSMAP 188/188C Sounder Owner ’s Manual M AIN M ENU > GPS T AB The progress of satellite acquisition is shown in three stages: • No signal strength bars —the receiver is looking for the satellites indicated. • Light signal strength bars —the receiver has found the satellite(s) and is collecting data. • Dark signal strength bars ?[...]

GPSMAP 188/188C Sounder Owner ’s Manual 41 M AIN M ENU > GPS T AB Ocean, in a geo-stationary orbit over the equator . Effective use of the W AAS satellite signal can be limited by your geographic location in relation to those satellites, now in developmental service. W AAS satellite signal reception requires an absolute clear view of the sky a[...]

42 GPSMAP 188/188C Sounder Owner ’s Manual M AIN M ENU > GPS T AB • AutoLocate —the receiver is looking for any satellite whose almanac has been collected. This process can take up to five minutes. • Acquiring Satellites —the receiver is looking for and collecting data from satellites visible at its last known or initialized position,[...]

GPSMAP 188/188C Sounder Owner ’s Manual 43 M AIN M ENU > T IDE T AB GPS T ab Options The GPS tab features an options page that provides access to functions and features relating to the GPS Info display . T o display and select the GPS T ab options: 1. Press MENU . 2. Using the ROCKER , highlight an option, and press ENTER . NOTE: If a DGPS r e[...]

44 GPSMAP 188/188C Sounder Owner ’s Manual M AIN M ENU > T IDE T AB in 4-hour increments, and the light, dotted vertical lines are in 1-hour increments. A solid vertical line (with the current time box at the top) indicates the time of day when using current date and intersects the tide graph to show their relationship. Y ou can select from a [...]

GPSMAP 188/188C Sounder Owner ’s Manual 45 M AIN M ENU > T IDE T AB Y ou can automatically search for the nearest station using a variety of search locations. Y ou must select a location within 100 nm of a tide station. If you are not within this range, you see a message “None Found.” Use the Nearest T o Other Find option and select a loca[...]

46 GPSMAP 188/188C Sounder Owner ’s Manual M AIN M ENU > T RIP T AB Move the time bar on the tide chart in 5 minute increments to show tide heights at various times on the chart. T o see tide heights at various times on the chart: 1. Press MENU , highlight Move Cursor , and press ENTER . 2. Press left or right on the ROCKER to change the time.[...]

GPSMAP 188/188C Sounder Owner ’s Manual 47 M AIN M ENU > C ELES T AB Celes (Celestial) T ab The Celestial tab displays celestial data for sun and moon rise/set, moon phase, and approximate sky view location of the sun and moon. The moon phase displays the current visible portion of the moon as a light color . Y ou can display this data for you[...]

48 GPSMAP 188/188C Sounder Owner ’s Manual M AIN M ENU > P OINTS T AB Celestial T ab Menu T o change the time or date: 1. From the Celes tab, use the ROCKER to highlight the date or time, and press ENTER . 2. Enter a new date or time, and press ENTER . T o use current date and time: From the Celes tab, press MENU , use the ROCKER to highlight [...]

GPSMAP 188/188C Sounder Owner ’s Manual 49 M AIN M ENU > P OINTS T AB T o select the Points (Waypoint) sub tab: 1. Use the ROCKER to highlight the Points tab. A list of stored waypoints appear to the right of the Main Menu list. 2. Press right one time on the ROCKER . The User tab is now highlighted. 3. Press down on the ROCKER until a waypoin[...]

50 GPSMAP 188/188C Sounder Owner ’s Manual M AIN M ENU > P OINTS T AB T o display the waypoint menu options: Using the ROCKER , highlight the User tab, and press MENU . T o scroll through and review the waypoint list: 1. With the ROCKER , highlight the Points tab from the Main Menu, and then highlight User . 2. Use the ROCKER to scroll through[...]

GPSMAP 188/188C Sounder Owner ’s Manual 51 M AIN M ENU > P OINTS T AB T o delete waypoints by symbol: 1. From the User sub tab, highlight the waypoint to delete, and press MENU . Select Delete By Symbol , and press ENTER . 2. Use the ROCKER to highlight the symbol of the waypoint(s) to delete, and press ENTER . 3. Press ENTER to confirm. T o [...]

52 GPSMAP 188/188C Sounder Owner ’s Manual M AIN M ENU > P OINTS T AB T o add a proximity waypoint: 1. Use the ROCKER to highlight an empty space on the Proximity list, and press ENTER . The Find screen appears. Highlight W aypoints , and press ENTER . 2. T o select a waypoint from the list, use the ROCKER to highlight a waypoint from the User[...]

GPSMAP 188/188C Sounder Owner ’s Manual 53 M AIN M ENU > R OUTES T AB Routes T ab The Route List Page displays all the routes currently stored in memory , along with a descriptive name for each route. After a route has been created, it can be activated and used for navigation with the NA V key . A route can be followed in the same sequence as [...]

54 GPSMAP 188/188C Sounder Owner ’s Manual M AIN M ENU > R OUTES T AB Route Review Page After you create a route, use the Route Review Page to review and modify the route displayed. T o show the Route Review Page: 1. Press MENU twice, and highlight the Route tab. 2. Highlight the route you want to review , and press ENTER . Route List Menu Rou[...]

GPSMAP 188/188C Sounder Owner ’s Manual 55 M AIN M ENU > R OUTES T AB When you are on the Route Review Page, you can review the route points (waypoints or map items) one at a time from the list. T o review individual route points: 1. Highlight a point, and press ENTER . 2. On the waypoint review window , you can choose Next (highlight the next[...]

56 GPSMAP 188/188C Sounder Owner ’s Manual M AIN M ENU > R OUTES T AB Edit on Map —allows you to review and modify the route displayed for each point (waypoint or map item) on a map page. Use the pointer to insert a new route point on a route leg, review the waypoint, or map item. T o edit the route on the map: From the Route Review Page, pr[...]

GPSMAP 188/188C Sounder Owner ’s Manual 57 M AIN M ENU > R OUTES T AB Add Before —inserts a waypoint into the list of route points or add a point(s) onto the end of the route. T o insert a point into the route, or add a point to the end of the route: 1. From either the Route Review or Active Route Pages, use the ROCKER to highlight the point[...]

58 GPSMAP 188/188C Sounder Owner ’s Manual M AIN M ENU > R OUTES T AB T rip Planning —the Route Review and Active Route Pages also display trip-planning information for each leg or the entire route. A vailable information includes Course, ET A, Fuel (to point), Leg Distance, Leg Fuel, Leg T ime, Sunrise and Sunset (at point location), and T [...]

GPSMAP 188/188C Sounder Owner ’s Manual 59 M AIN M ENU > T RACK T AB T rack T ab The T rack tab specifies whether or not to record a track log, define how it is recorded, or save track log data for future use. The Track Logs page also provides an indicator of the memory used for the active track log and options to clear the track memory or s[...]

60 GPSMAP 188/188C Sounder Owner ’s Manual M AIN M ENU > T RACK T AB For the Active sub tab, the following settings are available: Record Mode —contains three track recording options: • Off —the track log is not recorded. Selecting the of f setting prevents you from using the T racBack feature. • Fill —a track log is recorded until t[...]

GPSMAP 188/188C Sounder Owner ’s Manual 61 M AIN M ENU > DSC T AB Y ou can use the Review On Map option to display a saved track on a T rack Map page. T o activate a T racBack from the Saved tab list: 1. Using the ROCKER , highlight a track, and press NA V . The Follow <track name> automatically appears highlighted. 2. Press ENTER . 3. C[...]

62 GPSMAP 188/188C Sounder Owner ’s Manual M AIN M ENU > C ARD AND T IME T ABS Card T ab The Card tab contains options for saving waypoints, routes and tracks to a data card. When data is saved to a data card, it can be exchanged with other compatible units and Garmin’ s MapSource PC program. T o transfer data to/from a data card: 1. Insert [...]

GPSMAP 188/188C Sounder Owner ’s Manual 63 M AIN M ENU > P AGES T AB Pages T ab The Pages tab allows you to turn on or off any of the main pages or Jump T o a particular page. Y ou can also set the page that appears first when you turn on the unit or enable/disable the GPS Info on the initial screen. T o select or deselect a main page: 1. Use[...]

64 GPSMAP 188/188C Sounder Owner ’s Manual M AIN M ENU > M AP T AB Map T ab The Map tab changes the display properties of the Map Page. The following pages contain descriptions of the Map tab’ s eight sub tabs. General Sub T ab • Detail —Most, More, Normal, Less, Least: controls how much map detail appears. This setting only applies to m[...]

GPSMAP 188/188C Sounder Owner ’s Manual 65 M AIN M ENU > M AP T AB T o display the Map Information Page: 1. Highlight the Data Card Maps button, and press ENTER . 2. Use the ROCKER to scroll through the list of maps. 3. T o select or deselect a map, highlight the check box to the left of the name of a map and press ENTER . The map is selected [...]

66 GPSMAP 188/188C Sounder Owner ’s Manual M AIN M ENU > M AP T AB Points Sub T ab The Spot Soundings, T ide Stations, and Services options each contain adjustments for text and zoom. • T ext —None (except Spot Soundings), Small, Medium, and Large: controls the screen size of the name. • Zoom —Auto, Off, 120 ft-800 mi: sets the maximum[...]

GPSMAP 188/188C Sounder Owner ’s Manual 67 M AIN M ENU > M AP T AB Nav Line Sub T ab • Heading Line —On/Off: draws an extension from the end of the boat icon in the direction of travel. • Bearing Line —On/Off: toggles the black/white line that points to the current navigation point. • Course Line —Auto, Off, 120 ft-800 mi: sets the[...]

68 GPSMAP 188/188C Sounder Owner ’s Manual M AIN M ENU > H IW A Y , T EMP , AND S ONAR T ABS Hiway (Highway) T ab The Highway tab contains display settings for the Highway Page. Refer to the “Highway Page” section on page 35 . T emp (T emperature) T ab The T emperature tab displays the water temperature log. The temperature log requires in[...]

GPSMAP 188/188C Sounder Owner ’s Manual 69 M AIN M ENU > S YSTM T AB Systm (System) T ab The System tab controls system setting for beeper , speed filter, languages, system mode, and simulator controls, restores factory settings, displays the software version, and prepares software update cards. The following settings are available: • Beepe[...]

70 GPSMAP 188/188C Sounder Owner ’s Manual M AIN M ENU > U NITS T AB Units T ab The Unit tab defines the Position Format, Map Datum, Heading, Distance, Speed, Elevation, Depth, and T emperature units. The following settings are available: • Position Format —changes the coordinate system. Y ou should only change the position format if you [...]

GPSMAP 188/188C Sounder Owner ’s Manual 71 M AIN M ENU > U NITS T AB • Heading —selects the reference used in calculating heading information. Y ou can select from Auto Mag V ar , T rue, Grid, and User Mag V ar . Auto Mag V ar provides magnetic north heading references that are automatically determined from your current location. T rue pro[...]

72 GPSMAP 188/188C Sounder Owner ’s Manual M AIN M ENU > C OMM T AB Comm (Communications) T ab The Communications tab controls the input/output format used when connecting your GPSMAP 188/188C Sounder to external NMEA devices, a DGPS beacon receiver , a personal computer , or another Garmin unit. NOTE: If a DGPS r eceiver is used, W AAS capabi[...]

GPSMAP 188/188C Sounder Owner ’s Manual 73 M AIN M ENU > C OMM T AB When transferring data between two Garmin units, always set one to Host and use the other unit to either Send or Request the data. T o select an input/output format: 1. Select Port 1 or Port 2 , highlight the Serial Data Format field, and press ENTER . 2. Use the ROCKER to se[...]

74 GPSMAP 188/188C Sounder Owner ’s Manual M AIN M ENU > C OMM T AB T o adjust the NMEA output: 1. From the Comm tab, press MENU , highlight NMEA Setup , and press ENTER . 2. Highlight an option, and press ENTER . 3. Use the ROCKER to select a setting, and press ENTER . Press QUIT to return to the Comm tab. Advanced NMEA Output Setup Page T o [...]

GPSMAP 188/188C Sounder Owner ’s Manual 75 M AIN M ENU > C OMM T AB Status Field SNR and Distance shows data when signal NOTE: The DGPS beacon transmitters ar e operated by the U.S. Coast Guar d (or similar government agency in other countries), and ar e r esponsible for their accuracy and maintenance. For DGPS transmitter pr oblems or to fin[...]

76 GPSMAP 188/188C Sounder Owner ’s Manual M AIN M ENU > A LARM T AB Alarm T ab The Alarm tab allows you to define the alarm settings. The Alarm tab is divided into three sub tabs: System alarms, Nav alarms, and Sonar alarms. System Sub T ab • Clock —provides an alarm for the system clock. Enter a time in the time field, and turn the ala[...]

GPSMAP 188/188C Sounder Owner ’s Manual 77 M AIN M ENU > A LARM T AB T o set an alarm: 1. Use the ROCKER to highlight a sub tab. 2. Highlight the field you want to set, and press ENTER . 3. Enter a setting, and press ENTER . 4. If you want the alarm to display and beep until acknowledged, highlight the Persist box, and press ENTER . If Persis[...]

78 GPSMAP 188/188C Sounder Owner ’s Manual U SING S ONAR > S ONAR P AGE U SING S ONAR This section covers the additional sonar options for the GPSMAP 188/188C Sounder when used in conjunction with a transducer . Read the T ransducer ’ s Installation Instructions to properly install the transducer . NOTE: Y ou MUST have a transducer installed[...]

GPSMAP 188/188C Sounder Owner ’s Manual 79 U SING S ONAR > S ONAR P AGE Using the Adjustment Menu The Adjustment menu gives you direct access to the settings and features most commonly used on the Sonar Page. The option selected currently appears in the upper left of the display . Press MENU and highlight Adjustments to see a list of all optio[...]

80 GPSMAP 188/188C Sounder Owner ’s Manual U SING S ONAR > S ONAR P AGE Range Adjustment Zoom Adjustment Range —sets the display depth range used for viewing. The unit can be set to automatically track the bottom or set to a user - specified depth range. Auto Mode displays the most information possible while continuously showing the bottom.[...]

GPSMAP 188/188C Sounder Owner ’s Manual 81 U SING S ONAR > S ONAR P AGE • Btm (Bottom) Split —shows two reduced pictures; the right at the original depth scale and the left showing sonar returns from the bottom up. All target depths read as a distance from the bottom. • Btm (Bottom) Lock —displays only the Bottom Lock picture (returns [...]

82 GPSMAP 188/188C Sounder Owner ’s Manual U SING S ONAR > S ONAR P AGE Whiteline —controls how the unit displays information about the bottom type (hard or soft). W ith the Whiteline Off, the bottom return displays as red and contains no information on bottom hardness. W ith Whiteline set at Normal or 1-100%, the bottom return becomes white[...]

GPSMAP 188/188C Sounder Owner ’s Manual 83 U SING S ONAR > S ONAR P AGE Scroll —adjusts the rate that the graph scrolls from right to left. If you are sitting still or the graph is moving too fast, slowing the scroll rate or pausing it can be beneficial. Sonar Page Options The GPSMAP 188/188C Sounder ’ s Sonar Page features a menu page th[...]

84 GPSMAP 188/188C Sounder Owner ’s Manual U SING S ONAR > S ONAR P AGE Show Pointer Option Data Window Pointer T o mark an underwater waypoint: 1. From the Sonar Page, press MENU , highlight Show Pointer , and press ENTER to pause the screen movement. 2. Use the ROCKER to move the pointer onto the target, such as underwater drop offs and stum[...]

GPSMAP 188/188C Sounder Owner ’s Manual 85 U SING S ONAR > S ONAR P AGE Size Split —enables width adjustment of the Sonar Page split screen. This option is available only when a split screen zoom scale is selected. Y ou can adjust the size of the split window anywhere from 1/4 to 3/4 width of the right half of the Sonar Page. Resizing the Sp[...]

86 GPSMAP 188/188C Sounder Owner ’s Manual U SING S ONAR > S ONAR T AB O PTIONS Depth Number —controls the efficiency of the digital depth update rate. Fast Update updates more quickly and is recommended for low-noise, deeper water (>50 ft). Auto is best for shallow water or high noise areas, and produces a slower screen update. Use Auto[...]

GPSMAP 188/188C Sounder Owner ’s Manual 87 U SING S ONAR > S ONAR T AB O PTIONS Keel Offset —used to offset the surface reading for the depth of a keel. This makes it possible to measure depth from the bottom of your keel instead of from the transducer ’ s location. Enter a positive number to offset for a keel, or enter a negative number t[...]

88 GPSMAP 188/188C Sounder Owner ’s Manual U SING S ONAR > S ONAR T AB O PTIONS T o calibrate the water speed: 1. On the Sonar tab, use the ROCKER to highlight Calibrate W ater Speed and press ENTER . 2. Bring the boat to a cruising speed. The top ground and uncalibrated water speeds are shown at the bottom of the calibration window . Note you[...]

GPSMAP 188/188C Sounder Owner ’s Manual 89 U SING S ONAR > S ONAR T AB O PTIONS Understanding Sonar The transducer mounted on your vessel transmits sound waves toward the bottom of a lake, stream, or seabed in a cone-shaped pattern. When a transmitted sound wave strikes an underwater object—such as the bottom, a piece of structure, or a fis[...]

90 GPSMAP 188/188C Sounder Owner ’s Manual U SING S ONAR > U NDERST ANDING S ONAR T ransducer Coverage The area covered by the transmitted sound waves is determined by the cone angle of the transducer and the water depth. The wide cone angles (40°) associated with low frequencies (50 kHz) provide a large coverage area for finding fish withi[...]

GPSMAP 188/188C Sounder Owner ’s Manual 91 U SING S ONAR > U NDERST ANDING S ONAR Whiteline When the sonar sound waves are reflected back by the bottom, a hard bottom returns a stronger signal than a soft bottom. A thin whiteline indicates a softer bottom, while a thick whiteline indicates a harder bottom. Normally , a red line is used to sho[...]

92 GPSMAP 188/188C Sounder Owner ’s Manual A PPENDIX > S PECIFICA TIONS A PPENDIX Specifications Physical Specifications Size : 188: 6.2" H x 6.3" W x 2.6" D (15.8cm x 16.0cm x 6.6cm) 188C: 6.2" H x 6.3" W x 3.7" D (15.8 cm x 16.0 cm x 9.4 cm) W eight : 188: 1.7 lbs. (.77Kg); 188C: 2.6 lbs. (1.18 kg) Display : 1[...]

GPSMAP 188/188C Sounder Owner ’s Manual 93 A PPENDIX > I NST ALLING THE GPSMAP 188/188C S OUNDER Installing the GPSMAP 188/188C Sounder The GPSMAP 188/188C Sounder must be properly installed according to the following instructions to get the best possible performance. T o complete the installation, you need the appropriate fasteners and a 1&qu[...]

94 GPSMAP 188/188C Sounder Owner ’s Manual A PPENDIX > M OUNTING THE GPSMAP 188/188C S OUNDER T o install the GPS antenna: 1. Screw the antenna directly onto the 1 " x 14-thread mount. 2. Route the cable to the mounting location of the display unit. Use the appropriate tie-wraps, fasteners, and sealant to secure the cable along the route [...]

GPSMAP 188/188C Sounder Owner ’s Manual 95 A PPENDIX > M OUNTING THE GPSMAP 188/188C S OUNDER T o install the GPSMAP 188/188C Sounder: 1. Select a location for the mounting bracket. 2. Mark and drill the four mounting holes for the fastener you are using. 3. Fasten the bracket to the surface using the appropriate fastener . 4. Insert the GPSMA[...]

96 GPSMAP 188/188C Sounder Owner ’s Manual A PPENDIX > I NST ALLING THE T RANSDUCER Installing the T ransducer The transducer acts as the eyes and ears of your new sonar . Proper transducer installation is critical to the operation of your unit. The transducer transmits sound waves toward the bottom in a cone shape. The lar ger the cone angle,[...]

GPSMAP 188/188C Sounder Owner ’s Manual 97 A PPENDIX > I NST ALLING THE T RANSDUCER T ransom Mount T ransducer The following diagram is for mounting the transducer included with the GPSMAP 188/188C Sounder with transducer package. If the transducer lead is too short, extension cables are available from your Garmin dealer . DO NOT cut the trans[...]

98 GPSMAP 188/188C Sounder Owner ’s Manual A PPENDIX > C ONNECTING THE P OWER /D A T A C ABLE Connecting the Power/Data Cable The power/data cable connects the GPSMAP 188/188C Sounder to a DC system and provides interface capabilities for connecting external devices. The color code in the diagram below indicates the appropriate harness connect[...]

GPSMAP 188/188C Sounder Owner ’s Manual 99 A PPENDIX > I NTERF ACING Interfacing The following formats are supported for connection of external devices: Garmin proprietary Differential GPS (DGPS), NMEA 0183 versions 3.0, ASCII T ext Output, R TCM SC-104 input (vs. 2.0). The following are the sentences for NMEA 0183, vs. 3.0 output: Approved se[...]

100 GPSMAP 188/188C Sounder Owner ’s Manual A PPENDIX > I NST ALLING AND R EMOVING D A T A C ARDS Installing and Removing Data Cards The GPSMAP 188/188C Sounder uses optional Garmin marine BlueChart and MapSource data cards to display digital charts and maps on-screen. Data cards are installed in the card slot located at the bottom right of th[...]

GPSMAP 188/188C Sounder Owner ’s Manual 101 A PPENDIX > S A TELLITE I NFORMA TION Satellite Information Satellite Sky View 45° 90° Outer ring - the horizon Inner ring- 45° above the horizon Center dot - 90° above the horizon Satellite Location The location of each available satellite is displayed over two location rings on the Satellite In[...]

102 GPSMAP 188/188C Sounder Owner ’s Manual A PPENDIX > W HA T IS A WAAS AND DGPS? What is W AAS? The W ide Area Augmentation System (W AAS) is an F .A.A. funded project to improve the overall integrity of the GPS signal. It is a space-based system that broadcasts integrity information and correction data as determined by ground reference stat[...]

GPSMAP 188/188C Sounder Owner ’s Manual 103 A PPENDIX > W HA T IS MMSI? What is Maritime Mobile Service Identity (MMSI)? Maritime Mobile Service Identity (MMSI) basically allows a VHF radio to act like a phone. In order to make a “call” on a phone, you first need a phone number to dial. The 9 digit MMSI number acts like a phone number whe[...]

104 GPSMAP 188/188C Sounder Owner ’s Manual A PPENDIX > N A VIGA TION T ERMS Navigation T erms A vg Speed —the average of all second-by-second speed readings since last reset. Bearing (BRG) —the compass direction from your current location to a destination. Course —the course between the active from and to waypoints. Depth —the depth b[...]

GPSMAP 188/188C Sounder Owner ’s Manual 105 A PPENDIX > N A VIGA TION T ERMS Pointer —an arrow pointing to your destination. Speed —the current velocity at which you are travelling, relative to a ground position. Also referred to as ground speed. Sunrise —the current day’ s time of sunrise. Sunset —the current day’ s time of sunset[...]

106 GPSMAP 188/188C Sounder Owner ’s Manual A PPENDIX > M ESSAGES Messages Approaching T urn —you are nearing a turn in a route. Arriving at Destination —you are nearing your destination. Batteries Low —you have less than 10 minutes of battery left. Can’t Unlock Maps —no applicable unlock code for one or more maps was found. Cannot d[...]

GPSMAP 188/188C Sounder Owner ’s Manual 107 A PPENDIX > M ESSAGES T rack Already Exists —a saved track with the same name already exists. T rack Memory Full —no more track data can be stored without deleting old data. T rack Log Full —the track log is full and track recording has been turned off. T o record more track points, you need to[...]

108 GPSMAP 188/188C Sounder Owner ’s Manual A PPENDIX > L ORAN TD S YSTEM LORAN TD System LORAN C is a radio navigation aid operated and maintained in the United States by the United States Coast Guard. The name LORAN is an acronym for “LOng RAnge Navigation.” The LORAN system covers the entire United States and the U.S. Coastal Confluenc[...]

GPSMAP 188/188C Sounder Owner ’s Manual 109 A PPENDIX > L ORAN TD S YSTEM The LORAN Position Format field is located on the Setup– Location tab on the Main Menu. The LORAN TD Setup window contains the fields to select the Loran GRI-Chain Number , Primary and Secondary Stations, and TD Of fsets. T o set up Loran TD from the Main Menu: 1. Pr[...]

1 10 GPSMAP 188/188C Sounder Owner ’s Manual A PPENDIX > O PTIONAL A CCESSORIES Optional Accessories The following optional accessories are designed to enhance the operation of the GPSMAP 188/188C Sounder . T o obtain replacement parts and optional accessories, contact your Garmin Dealer , Garmin Product Support in the U.S.A. at 800-800-1020, [...]

GPSMAP 188/188C Sounder Owner ’s Manual 1 1 1 A PPENDIX > S OFTW ARE L ICENSE A GREEMENT AND P RODUCT R EGISTRA TION Software License Agreement BY USING THE GPSMAP 188/188C SOUNDER, YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS OF THE FOLLOWING SOFTW ARE LICENSE AGREEMENT . PLEASE READ THIS AGREEMENT CAREFULL Y . Garmin grants you a limite[...]

1 12 GPSMAP 188/188C Sounder Owner ’s Manual A PPENDIX > L IMITED W ARRANTY Limited W arranty This Garmin product is warranted to be free from defects in materials or workmanship for one year from the date of purchase. W ithin this period, Garmin will at its sole option repair or replace any components that fail in normal use. Such repairs or [...]

GPSMAP 188/188C Sounder Owner ’s Manual 1 13 A PPENDIX > FCC C OMPLIANCE The Garmin GPSMAP 188/188C Sounder has no user-serviceable parts. Should you ever encounter a problem with your unit, please take it to an authorized Garmin dealer for repairs. The GPSMAP 188/188C Sounder is fastened shut with screws. Any attempt to open the case to chang[...]

1 14 GPSMAP 188/188C Sounder Owner ’s Manual A PPENDIX > S AFETY I NFORMA TION Safety Information CAUTION: Use the GPSMAP 188/188C Sounder at your own risk. T o reduce the risk of unsafe operation, carefully review and understand all aspects of this Owner ’ s Manual—and thoroughly practice operation using Simulator Mode prior to actual use[...]

GPSMAP 188/188C Sounder Owner ’s Manual 1 15 I NDEX I NDEX Symbols 2D Differential 42 2D GPS Location 89, 101 3D Differential 42 3D GPS Location 101 A Accessories 1 10 Accuracy 39 Accuracy Alarm 76 Accuracy Circle 67 Active Route Page 37 Options 38 Alarms Accuracy 76 Anchor Drag 76 Arrival 76 Battery 76 Clock 76 DGPS 76 DSC 25 Fish 76 Off Course [...]

1 16 GPSMAP 188/188C Sounder Owner ’s Manual I NDEX L Language 69 License Agreement 11 1 LORAN TD 108 M Magnetic V ariation 71 Main Menu 39 Main Pages 26 Man OverBoard 10 MapSource 62 Map Data Information 1 14 Map Datum 70 Map Detail 64 Map Information Page 65 Map Page 27 Options 30 Setup Map 33 Map Pointer 7, 28 Map Scales 29 Map T ab 64 Maritim[...]

GPSMAP 188/188C Sounder Owner ’s Manual 1 17 I NDEX T racBack 14 Activate 16 T rack Logs Clear 15 Save 15 T rack T ab 59 Active 59 Saved 59 T rack Up 64 T ransducer 90, 96 T rip Planning 58 T rip T ab 46 U Underwater W aypoints 84 Units T ab 70 Unit Defaults 69 W W AAS 40, 102 Disable/Enable 41 W aterproof iv W ater Speed 87 W ater T emperature A[...]

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For the latest fr ee software updates (excluding map data) throughout the life of your Garmin products , visit the Garmin W eb site at www .garmin.com. © Copyright 2005 Garmin Ltd. or its subsidiaries Garmin International, Inc. 1200 East 151 st Street, Olathe, Kansas 66062, U.S.A. Garmin (Europe) Ltd. Unit 5, The Quadrangle, Abbey Park Industrial [...]