Garmin GSD 26 Installation Instructions
GSD™ 26 Installation Instructions
To obtain the best performance and to avoid damage to your
boat, install the device according to these instructions.
Read all installation instructions before proceeding with the
installation. If you experience difficulty during the installation,
contact Garmin Product Support.
Important Safety Information
WARNING
See the Important Safety and Product Information guide in the
product box for product warnings and other important
information.
You are responsible for the safe and prudent operation of your
vessel. Sonar is a tool that enhances your awareness of the
water beneath your boat. It does not relieve you of the
responsibility of observing the water around your boat as you
navigate.
Registering Your Device
Help us better support you by completing our online registration
today.
• Go to http://my.garmin.com.
• Keep the original sales receipt, or a photocopy, in a safe
place.
Loading the New Software on a Memory Card
The device may contain a software-update memory card. If so,
follow the instructions provided with the card. If a software
update memory card is not included, you must copy the
software update to a memory card.
Insert a memory card into the card slot on the computer.
1
Go to www.garmin.com/support/software/marine.html.
2
Select Download next to “Garmin Marine Network with SD
3
card.”
Read and agree to the terms.
4
Select Download.
5
Select Run.
6
Select the drive associated with the memory card, and select
7
Next > Finish.
Updating the Device Software
Before you can update the software, you must obtain a
software-update memory card or load the latest software onto a
memory card.
Turn on the chartplotter.
1
After the home screen appears, insert the memory card into
2
the card slot.
NOTE: In order for the software update instructions to
appear, the device must be fully booted before the card is
inserted.
Follow the on-screen instructions.
3
Wait several minutes while the software update process
4
completes.
The device returns to normal operation after the software
update process is complete.
Remove the memory card.
5
NOTE: If the memory card is removed before the device
restarts fully, the software update is not complete.
Contacting Garmin Product Support
• Go to www.garmin.com/support and click Contact Support
for in-country support information.
• In the USA, call (913) 397.8200 or (800) 800.1020.
• In the UK, call 0808 2380000.
• In Europe, call +44 (0) 870.8501241.
CAUTION
Failure to install and maintain this equipment in accordance with
these instructions could result in damage or injury.
Always wear safety goggles, ear protection, and a dust mask
when drilling, cutting, or sanding.
NOTICE
When drilling or cutting, always check what is on the opposite
side of the surface.
This equipment must be installed by a qualified marine installer.
Transducers
A transducer is required to send and receive a sonar signal from
the sounder. Proper transducer selection and installation are
critical to the operation of the device. Because mounting
locations vary, see your local Garmin dealer or contact Garmin
Product Support for more information. Go to www.garmin.com
/transducers to select a transducer.
Installation Preparation
NOTICE
This device must be installed according to these instructions to
get the best possible performance. If you experience difficulty
with the installation, contact Garmin Product Support.
Because every boat is different, you must carefully plan the
GSD 26 sounder installation.
Select a mounting location.
1
Mount the sounder.
2
Connect the sounder to the Garmin Marine Network and to
3
power.
Connect the sounder to the transducer.
4
Tools Needed
• Drill
• #8 (5 mm) drill bit for mounting surface
• 1 1/4 in. (32 mm) paddle drill bit or hole saw for mounting
surface
• #2 Phillips screwdriver
• 3 mm flat screwdriver
• Cable ties (optional)
• Wire cutter
• Wire stripper
• 1 in. (24 mm) and 19/32 in. (15 mm) wrenches
• Marine sealant (optional)
Mounting the Sounder
Mounting Location Considerations
• The sounder must be mounted in a location where it cannot
be submerged.
August 2014
Printed in Taiwan 190-01821-02_0A
• The sounder must be mounted in a location with adequate
ventilation where it will not be exposed to extreme
temperatures.
• The sounder should be mounted so that the LEDs are visible.
• The sounder should be mounted so that the power and
network cables can be easily connected.
• The sounder should be mounted so that the transducer cable
can be connected. If required, transducer extension cables
are available through your Garmin dealer.
Mounting the Device
NOTICE
If you are mounting the bracket on fiberglass with screws, it is
recommended to use a countersink bit to drill a clearance
counterbore through only the top gel-coat layer. This will help to
avoid any cracking in the gel-coat layer when the screws are
tightened.
Stainless-steel screws may bind when screwed into fiberglass
and overtightened. Garmin recommends applying an anti-seize
lubricant to the screws before installing them.
Before you mount the device, you must select a mounting
location and determine the mounting hardware needed for the
surface.
NOTE: Mounting hardware is included with the device, but it
may not be suitable for the mounting surface.
Place the device in the mounting location and mark the
1
location of the pilot holes.
Drill the appropriate pilot hole for one corner of the device.
2
Loosely fasten the device to the mounting surface with one
3
corner and examine the other three pilot-hole marks.
Mark new pilot-hole locations if necessary, and remove the
4
device from the mounting surface.
Drill the appropriate pilot holes for the other three marks.
5
Secure the device to the mounting location.
6
Connecting the Sounder
Repeat steps 4 and 5 for the network cable, and connect the
6
device to a transducer (Connecting the Device to a
Transducer or Sensor) .
Select an option:
7
• If your boat is equipped with a GMS 10 network port
expander, connect the network cable to an available port
on the GMS 10.
• If your boat is not equipped with a GMS 10 network port
expander, connect the network cable directly to the
network port on your chartplotter.
Cable Routing Grommets
When routing cables through your boat, it may be necessary to
drill holes to route the cables. Cable routing grommets can be
used to cover cable installation holes. You can purchase
grommets from your Garmin dealer or directly from Garmin at
www.garmin.com .
Connecting the Device to a Transducer or Sensor
NOTICE
You must install cord grip plugs in any unused cord grip to make
sure water cannot enter the transducer wiring block area and
damage the sounder.
The terminal blocks are not removable.
Preparing the Cable
Remove the terminal block lid from the sounder.
1
Select an option:
2
• Feed a sensor cable through the small cord grip À, and
pull the cable into the terminal block area.
• Feed a transducer cable through one of the large cord
grips Á on the housing, and pull the cable into the
terminal block area.
NOTE: Do not tighten the cord grip.
WARNING
When connecting the power cable, do not remove the in-line
fuse holder. To prevent the possibility of injury or product
damage caused by fire or overheating, the appropriate fuse
must be in place as indicated in the product specifications. In
addition, connecting the power cable without the appropriate
fuse in place will void the product warranty.
NOTICE
Do not force a cable into its port. Forcing the cable can damage
the pins. If the cable is properly aligned, the cable should
connect easily.
Before you connect the sounder to the network, power, and the
transducer, you must mount the sounder (Mounting the
Sounder) .
Route the cables using the appropriate tie wraps, fasteners,
1
and sealant to secure the cables along the route and through
any bulkheads or the deck.
Install the locking rings on the marine network and power
2
cables (Installing Locking Rings on the Cables) .
Connect the bare-wire end of the power cable to a 12 Vdc
3
power source and to ground.
Align the notch on the end of the power cable with the power
4
port on the device, and press the cable into place.
Tighten the locking ring.
5
Connecting the Wires to the Terminal Block
Before you connect the wires, consult the wiring diagrams
(Transducer Wiring Diagrams) to select the proper wiring
configuration for your transducer and the wiring tables
(Transducer Wire Color Tables) for specific examples of Garmin
wire colors.
Connect the uninsulated section of each wire to the terminal
1
block using a 3 mm flat screwdriver.
Connect the bare shield wire to one of the two ground posts
2
under the terminal block using a #2 Phillips screwdriver.
Securing the Wire Connections
After connecting the wires, use a 24 mm (1 in.) wrench to
1
tighten the nut around the transducer cable.
When tightened correctly, you should not be able to pull the
transducer cable out of the housing.
Insert a cord grip plug into each unused cord grip.
2
2
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