Page 1 GPSMAP 178/178C chartplotter & depth-finder owner’s manual.; Page 2 Information in this document is subject to change without notice. Garmin reserves the right to change or improve its products and to make changes in the content without obligation to notify any person or organization of such changes or improvements.
- GPSMAP 135 Sounder is an innovative combination of a complete depth sounder and proven Garmin® GPS chartplotting. This ideal sounder/GPS combination will give you the advantage and convenience you want on the water without a stiff price.
- They are, among others: - Garmin technical drawings - 178, 178C manuals - Garmin product data sheets - information booklets - or energy labels Garmin 178, 178C All of them are important, but the most important information from the point of view of use of the device are in the user manual Garmin 178, 178C.
- The GARMIN GPSMAP 235 Sounder is a precision electronic NAVigation AID (NAVAID), any NAVAID can be misused or misinterpreted and, therefore, become unsafe. Use the GPSMAP 235 Sounder at your own risk. To reduce the risk of unsafe operation, carefully review and understand all aspects of this Owner’s Manual—and.
- Garmin GPSMAP 178/178C Sounder utilizes the proven performance of Garmin GPS and full-featured map-ping to create an unsurpassed marine navigation chartplotter. To get the most out of your new navigation system, take the time to go through this owner’s manual.
- The GPSMAP 178/178C uses an on-screen pop-up message system. To alert you to unit operating characteristics. Press the ENTER key to acknowledge and return to the page you were viewing. Alarm Clock— The alarm clock has sounded. Alarm Voltage Set Too High— Voltage range must be between 10.0 and 35.0 volts for the GPSMAP 178/178C.
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Appendix A
Unit Installation
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Mounting the GPSMAP 178/178C Unit
The GPSMAP 178/178C’s compact, waterproof case is suitable for mounting in exposed locations or
at the nav station. The unit comes with a gimbal bracket that can be used for surface or overhead mount-
ing. When choosing a location for the display unit, make sure you consider the following conditions:
• There should be at least a 3” (5 cm) clearance behind the case to allow connection of the antenna
(external antenna only), power/data cables.
• The mounting surface should be heavy enough to support the unit and protect it from excessive
vibration and shock.
• For GPSMAP 178/178C with a built-in internal antenna, it should be mounted in a location that
has the clearest, most unobstructed view of the sky in all directions to ensure the best reception.
Avoid mounting the unit where it is blocked by the boat’s superstructure, a radar arch, or mast.
NOTE: The temperature range for the GPSMAP 001800180018/001800180018C 0018s 0018°F to 001800180018°F
(-00180018°C to 00180018°C). Extended exposure to temperatures exceed0018ng th0018s range (0018n storage or
operat0018ng cond0018t0018ons) may cause fa0018lure of the LCD screen. Th0018s type of fa0018lure and related
consequences are NOT covered by the manufacturer’s l0018m0018ted warranty.
To swivel mount the GPSMAP 178/178C display:
Garmin 178c Transducer
Tools (not included) — Drill, Screwdriver (Phillips or Standard), three #8 (4mm) pan head machine
bolts with matching nuts and washers and a 5/32” (5mm) drill bit, OR three #8 pan head self-tapping
screws and an appropriately-sized drill bit for drilling starter holes. Always wear safety goggles, ear
protection, and a dust mask when drilling, cutting, or sanding.
1. Using the swivel base as a template, mark the location of the three holes that are used to secure
the bracket to the mounting surface.
2. If securing the base with machine bolts, drill three 5/32” (5mm) holes at the locations you marked.
2. If securing the base with machine bolts, drill three 5/32” (5mm) holes at the locations you marked.
OR, if securing the base with self-tapping screws, drill starter holes at the locations you marked.
Starter holes should generally be no deeper than half the screw length.
3. Secure the swivel base with three bolts or screws. DO NOT OVERTIGHTEN.
4. Place the rest of the mount over the swivel base and secure with the short knob.
4. Place the rest of the mount over the swivel base and secure with the short knob.
Secure the base and attach the mount
The swivel base is designed to be secured using a pan
head screw or machine bolt. If you use a screw with a
countersunk head, you risk damaging the Mounting
Base.
head screw or machine bolt. If you use a screw with a
countersunk head, you risk damaging the Mounting
Base.
OK
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00180018
Appendix A
Unit Installation
Flush Mounting the GPSMAP 178/178C External Antenna Unit
The GPSMAP 178/178C External Antenna only can be flush mounted on a flat panel. When flush
mounting the GPSMAP 178/178C, be sure to choose an appropriately sized location for the unit. Check
that all cables reach the unit mounting location before beginning installation. Use the Flush Mount Tem-
plate provided in the box to determine a location. Always wear safety goggles, ear protection, and a dust
mask when drilling, cutting, or sanding.
that all cables reach the unit mounting location before beginning installation. Use the Flush Mount Tem-
plate provided in the box to determine a location. Always wear safety goggles, ear protection, and a dust
mask when drilling, cutting, or sanding.
To flush mount the GPSMAP 178/178C (External Antenna ONLY):
Included Mounting Hardware-- 4 - 3mm Studs, 4 - Flat Washers, 8 - 3mm Hex Nuts.
Tools (not included) — Center Punch, Drill, 1/8” (3mm) Drill Bit, 3/8” (6mm) Drill Bit, Jig Saw, 1/16”
(2mm) Allen Wrench, 9/35” (7mm) Wrench.
1. Trim the Flush Mount Template and tape in the desired location.
2. Using a Center Punch, indent the center of each Mounting Hole location.
3. Using a 1/8” (3mm) drill bit, drill the four Mounting Holes.
4. Using a 3/8” (6mm) drill bit, drill a hole for a location to begin cutting the mounting surface.
5. Using the Jig Saw, cut the mounting surface along the inside of the dashed line indicated on the tem-
Tools (not included) — Center Punch, Drill, 1/8” (3mm) Drill Bit, 3/8” (6mm) Drill Bit, Jig Saw, 1/16”
(2mm) Allen Wrench, 9/35” (7mm) Wrench.
1. Trim the Flush Mount Template and tape in the desired location.
2. Using a Center Punch, indent the center of each Mounting Hole location.
3. Using a 1/8” (3mm) drill bit, drill the four Mounting Holes.
4. Using a 3/8” (6mm) drill bit, drill a hole for a location to begin cutting the mounting surface.
5. Using the Jig Saw, cut the mounting surface along the inside of the dashed line indicated on the tem-
plate. Be very careful when cutting this hole, there is only a small amount of clearance
between the unit and the Mounting Holes . It may be prudent to cut slightly inside the indicated
line and then sand or file the panel as needed to obtain the best fit.
between the unit and the Mounting Holes . It may be prudent to cut slightly inside the indicated
line and then sand or file the panel as needed to obtain the best fit.
6. Install the four Mounting Studs into the unit by screwing the shorter section into the back of the unit.
Use a 1/16” (2mm) Allen Wrench to tighten the Mounting Studs until the stops contact the case. Be
careful not to overtighten as this may damage the Mounting Stud. The studs have a reusable thread-
locking patch pre-applied from the factory.
careful not to overtighten as this may damage the Mounting Stud. The studs have a reusable thread-
locking patch pre-applied from the factory.
7. Place the unit in position inside the cutout area of the mounting surface.
8. Place washers over the Mounting Studs, then thread on one Hex Nut per Mounting Stud. Tighten all
8. Place washers over the Mounting Studs, then thread on one Hex Nut per Mounting Stud. Tighten all
four Hex Nuts until the unit is snug against the mounting surface. Install and tighten the second Hex
Nut on all four Mounting Studs to lock the first Hex Nut in place.
Nut on all four Mounting Studs to lock the first Hex Nut in place.
Studs
Washer
Hex Nuts
Garmin Gps 178c Sounder Manual
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