Garmin ONDECK GTB 10 User manual

ONDECK™
INSTALLATION INSTRUCTIONS
Important Safety Information
WARNING
Failure to follow these warnings, cautions, and notices could result in personal injury, damage to the vessel or
device, or poor product performance.
See the Important Safety and Product Information guide in the product box for product warnings and other
important information.
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. Connecting the power cable without the appropriate fuse in place voids the product warranty.
CAUTION
To avoid possible personal injury, always wear safety goggles, ear protection, and a dust mask when drilling,
cutting, or sanding.
To avoid possible personal injury or damage to the device and vessel, disconnect the vessel's power supply
before beginning to install the device.
To avoid possible personal injury or damage to the device or vessel, before applying power to the device, make
sure that it has been properly grounded, following the instructions in the guide.
To avoid possible personal injury or damage to this device and vessel, only install this device when the vessel is
on land, or when properly secured and docked in calm water conditions.
NOTICE
For the best possible performance, the device must be installed according to these instructions.
When drilling or cutting, always check what is on the opposite side of the surface to avoid damaging the vessel.
Read all installation instructions before proceeding with the installation. If you experience difficulty during the
installation, contact Garmin® Product Support.
Contacting Garmin Support
• Go to support.garmin.com for help and information, such as product manuals, frequently asked questions,
videos, and customer support.
• In the USA, call 913-397-8200 or 1-800-800-1020.
• In the UK, call 0808 238 0000.
• In Europe, call [phone].
GUID-6AED2D91-1EED-4702-BB7B-92D845BF82D6 v8November 2022

Connector View
Power button
FACTORY RESET Deletes all personal data and resets default settings
STATUS Indicates device status
CELL Indicates cell operation
POWER Power cable connection
NMEA 2000 NMEA 2000® network
NETWORK Garmin Marine Network
IN/OUT Connects relays and wired sensors, such as temperature, security, and shore power
GPS Connects to an external GPS antenna
Tools Needed
• Drill
• Drill bits appropriate for the surface and hardware
• Phillips screwdrivers
• Pencil
• Solderless wire-splice connector, or solder and heat-shrink tubing
2

Mounting Considerations
NOTICE
This device should be mounted in a location that is not exposed to extreme temperatures or conditions. The
temperature range for this device is listed in the product specifications (GTB 10 Specifications, page19).
Extended exposure to temperatures exceeding the specified temperature range, in storage or operating
conditions, may cause device failure. Extreme-temperature-induced damage and related consequences are not
covered by the warranty.
• You must mount the device in a location where it will not be submerged.
• You must mount the device in a location with adequate ventilation where it will not be exposed to extreme
temperatures.
• You must mount the device at least 102mm (4in.) from cables and other potential sources of interference.
• You must mount the device in a location that allows room for the routing and connection of all cables.
• You must mount the device with the connectors facing up when mounted on a horizontal surface or out
when mounted on a vertical surface. Do not install with the connectors facing down or facing the mounting
surface. The internal GPS antenna will not work if mounted in this orientation. See Installing the Antennas,
page4.
• For optimal internal GPS reception, you should mount the device in a location where it is above the water line
when the vessel is in the water and if possible, has a clear view of the sky.
• If you mount the device in a vessel with a metal hull or with the internal GPS antenna blocked or oriented
poorly, you must connect the device to an external GPS antenna (sold separately).
• For the best cellular signal, mount the device where it has a clear view of the sky. If it is mounted inside of a
cabin, it should be close to a window so it can receive the cellular signal.
Mounting the GTB 10 Black Box Device
NOTICE
If you are mounting the device in fiberglass, when drilling the pilot holes, use a countersink bit to drill a
clearance counterbore through only the top gel-coat layer. This will help to avoid cracking in the gel-coat layer
when the screws are tightened.
NOTE: Screws are included with the device, but they may not be suitable for the mounting surface.
Before you mount the device, you must select a mounting location, and determine what screws and other
mounting hardware are needed for the surface.
1Place the black box device in the mounting location, and mark the location of the pilot holes.
2Drill a pilot hole for one corner of the device.
3Loosely fasten the device to the mounting surface with one corner, and examine the other three pilot-hole
marks.
4Mark new pilot-hole locations if necessary, and remove the device from the mounting surface.
5Drill the remaining pilot holes.
6Secure the device to the mounting location.
3

Installing the Antennas
After mounting the device, you must orient both antennas pointing toward the sky for the best reception.
1Remove the black, rubber cap from the connector.
2Loosely attach the antenna to the connector.
3Orient the antenna toward the sky.
• If you are installing the device on a vertical surface, such as a bulkhead, you must install the antennas
parallel to the black box .
• If you are installing the device on a horizontal surface, you must install the antennas perpendicular to the
black box .
NOTE: You must have the antenna oriented properly for the cover to fit.
4While holding the antenna in the appropriate position, finger tighten the antenna nut.
5Using the included wrench, rotate the nut another 45 degrees to fully tighten the antenna nut.
The recommended torque applied to the nut is 0.56 N-m (5lbf-in.), or finger tight plus 45 degrees.
NOTICE
To ensure a water-tight connection, tighten the antenna nut to 0.56 N-m (5lbf-in.). Over tightening the nut could
cause damage to the device.
6Place the cover over the connecter.
7Secure the cover using the small screw and included #0 Phillips screwdriver.
8Repeat these steps to install the second antenna.
Connection Considerations
When connecting this device to power and to other Garmin devices, you should observe these considerations.
• You must check the power and ground connections to the battery to make sure they are secured and cannot
become loose.
• You must make sure the locking rings are tightened so the power or data connection remains secure.
• Bare wire connections must be water tight if they will be exposed to moisture. You can use heat-shrink type
butt connectors or other water-tight connections.
• To prevent corrosion of the metal contacts, you must cover unused connectors with weather caps.
• For the best connection of the GPS antenna, completely remove the weather cap from the GPS connector.
• If you need to extend the IN/OUT wires, use minimum of 24AWG (0.08mm2) wire.
• You should install a 1Amp fuse on all relay controls, Boat-in-Use, Bilge 1/2, and Battery 1/2 input wires at the
positive input to the power source.
4

Connecting to Power
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. Connecting the power cable without the appropriate fuse in place voids the product warranty.
To properly monitor your vessel when the ignition is off, you should not connect the power cable to the device
through the ignition.
Fuse (7.5 A, 42 V fast-acting)
Battery
6 ft. (1.8 m) no extension
1Route the power cable between the power source and the device.
2Connect the red power wire to the positive (+) battery terminal.
3Connect the black wire to the negative (-) battery terminal.
4Connect the power cable to the device, and turn the locking ring clockwise to tighten it.
5

Power Cable Extensions
If necessary, the power cable can be extended using the appropriate wire gauge for the length of the extension.
Splice
• Up to 4.6m (15 ft.): 10AWG (5.26mm2) extension wire
• Up to 7m (23 ft.): 8AWG (8.36mm2) extension wire
• Up to 11m (36 ft.): 6AWG (13.29mm2) extension wire
Fuse (7.5 A, 42 V fast-acting)
20.3cm (8in.)
Battery
20.3cm (8in.)
11m (36 ft.) maximum extension
6

Connection Diagram
Garmin chartplotter connected to the Garmin Marine Network and NMEA 2000 network
GTB 10 black box device
Sensor connected through the NMEA 2000 network
GPS antenna with a BNC connector (sold separately and required only if the internal GPS antenna
reception is poor)
NMEA 2000 network
Optional switch. Must be turned on for remote operation
Power source
OnDeck sensors and relays
7

IN/OUT Cable Pinout
WARNING
All connections should be made using proper electrical connectors. To avoid the potential for electric shock and
damage to equipment, ensure connections are watertight if they will be exposed to moisture.
8

Pin Number Wire Function Wire Color
Relay 1 White
Relay 2 White/orange
Relay 3 Gray
Relay 4 Pink
Relay 5 Brown
Relay 6 (Aux)1White/brown
Relay 7 (NMEA 2000) 2Blue
Shore Power White/blue
Wake (unused) Violet
Boat-in-Use White/violet
Bilge 1 White/black
Bilge 2 Red/white
Security White/green
Battery 1 Pos Red
Battery 1 Neg Green
Battery 2 Pos Yellow
Battery 2 Neg Orange
Ground (shield) Black
Temp Light green
Notes
• Each relay control wire is rated for up to 1A. External relay switches are recommended. For higher-current
loads, external relay switches are required. Do not connect these wires to the positive side of a power source.
1 This relay is automatically controlled by the GTB 10 black box device to switch power to Garmin Marine Network devices.
2 This relay is automatically controlled by the GTB 10 black box device to switch power to NMEA 2000 devices.
9

• You should install a 1Amp fuse on all relay controls, Boat-in-Use, Bilge 1/2, and Battery 1/2 inputs at the
positive input to the power source.
• The Boat-in-Use, Bilge 1/2, and Battery 1/2 inputs require a voltage between 10 and 32Vdc.
• If the boat's ground is ever intended to be switched off from the power source, do not directly connect the
Ground (black) wire from the IN/OUT wiring harness to the negative side of the of the GTB 10 black box
device's power source.
Installing the Shore Power Sensor
You can connect the AC shore power sensor to the OnDeck system to be alerted when the outlet loses power.
The shore power sensor also enables the device to stay in a full-power state when the boat is connected to
shore power.
NOTICE
To avoid damage to the sensor, you must install this sensor in a dry location.
1Select and install the proper plug type for your AC system.
NOTE: Do not plug in the shore power sensor to the power outlet at this time.
2Connect the white wire from the shore power sensor to the white/blue wire on the IN/OUT wiring harness.
3Connect the black wire from the shore power sensor to the black wire on the IN/OUT wiring harness.
4Plug in the shore power sensor to an AC outlet that is connected to the boat's shore power connection.
Installing the Temperature Sensor
1Connect one wire from the temperature sensor to the light green wire on the IN/OUT wiring harness.
2Connect the other wire from the temperature sensor to the black wire on the IN/OUT wiring harness.
3Use the ring on the temperature sensor to secure it, as needed.
You must set up the sensor in the ActiveCaptain® app.
Installing the Security Sensor
You can connect up to 30 security sensors carefully installed and tested in series.
The two parts of the security sensor should not be more than 10mm (0.4in.) apart when the door or window is
closed to engage the magnet.
1Select a location on the window or door frame and the window or door that allows the two parts of the
sensor to align.
2Use two screws to mount the wired half of the sensor to the door or window frame.
3Use two screws to mount the other half of the sensor to the door or window, ensuring that the two parts align
when the door or window is closed.
4Connect one wire from the sensor to the white/green wire on the IN/OUT wiring harness.
5Connect the other wire to the black wire on the IN/OUT wiring harness.
You must set up the sensor in the ActiveCaptain app.
10

Installing a Relay Switch
You can use an external relay switch to turn on and off an item, such as a light, on your vessel remotely, using
the ActiveCaptain app. One 12V relay is included. If you need more relays or 24V relays, they are available
separately for purchase at garmin.com.
NOTICE
To avoid potential damage to the relay switch, GTB 10 black box device, and device being switched, you must
install this relay switch in a dry location.
1Connect the correctly colored wire on the IN/OUT wiring harness to the negative control (white) wire on the
relay.
See IN/OUT Cable Pinout, page8.
NOTE: Do not connect these wires to the positive side of a power source.
2Connect the positive control (black) wire on the relay to a 1Amp fuse and the positive side of the same
power source as the GTB 10 black box device.
NOTE: Even though the relay switch and the GTB 10 device have different power ratings, the inputs must be
connected to the same power source.
3Connect the positive wire from the power cable for the item to be controlled to the negative load (blue) wire
on the relay.
4Connect the positive load (yellow) wire on the relay to the positive terminal of the item's power source.
NOTE: The wire used in step 4 should be the same or greater gauge wire to what was used in step 3.
NOTE: You must follow the output power ratings listed in the specifications for the relay type being used.
5Complete the installation of the item to be controlled by connecting the negative wire from the item to the
negative side of the power source.
You must set up the relay switches in the ActiveCaptain app.
Relay Connection Diagram
NOTICE
To avoid potential damage to the relay switch, GTB 10 black box device, and device being switched, you must
install this relay switch in a dry location.
11

GTB 10 black box device
GTB 10 black box power cable
GTB 10 IN/OUT cable, corresponding relay wire
Optional switch for GTB 10 power (must be turned on for remote operation)
Relay (one 12V relay included)
Power source
Device controlled by the relay, such as a light
Negative control wire, white
Positive control wire, black
Negative load wire, blue
Positive load wire, yellow
Connecting the Boat-in-Use Input
The Boat-in-Use input enables the device to stay in a full-power state when the boat's electronics are turned on.
If you need to extend the IN/OUT wires, use minimum of 24 AWG (0.08 mm2) wire.
NOTICE
You must connect the Boat-in-Use input so that it receives power when you turn on your Garmin marine devices,
including Garmin chartplotters. If you do not connect the Boat-in-Use input, the device may not remain in a
full-power state like other Garmin devices, which prevents you from connecting the device to the vessel Wi‑Fi®
network and updating the software from a connected Garmin chartplotter.
1Connect the white/violet (Boat-in-Use) wire from the IN/OUT wiring harness to a 1Amp fuse and the positive
side of the 10 to 32Vdc switched boat/accessories power.
2Connect the black wire (Ground) from the IN/OUT wiring harness to the negative side of the source from step
1.
NOTE: If the boat's ground is ever intended to be switched off from the power source, do not directly connect
the Ground (black) wire from the IN/OUT wiring harness to the negative side of the of the GTB 10 black box
device's power source.
Connecting the Battery Inputs
If you need to extend the IN/OUT wires, use minimum of 24 AWG (0.08 mm2) wire.
1Connect the Battery 1 Pos (red) or Battery 2 Pos (yellow) wire from the IN/OUT wiring harness to a 1Amp
fuse and the positive side of the boat's 10 to 32Vdc battery.
2Connect the corresponding Battery 1 Neg (green) or Battery 2 Neg (orange) wire from the IN/OUT wiring
harness to the negative side of the boat's battery.
12

Connecting the Bilge Pump Inputs
If you need to extend the IN/OUT wires, use minimum of 24 AWG (0.08 mm2) wire.
1Connect the Bilge 1 (white/black) or Bilge 2 (red/white) wire from the IN/OUT wiring harness to a 1Amp fuse
and the switched positive side of the bilge pump's 10 to 32Vdc power source.
NOTE: If you are connecting to an auto-sensing bilge pump with an optional manual connection, you may be
able to connect this input to the pump's manual connection if it is energized to 10 to 32Vdc when the pump
is active.
2Connect the negative side of the bilge pump's power to the negative side of the power source for the GTB 10
black box device's power source.
NOTE: If the boat's ground is ever intended to be switched off from the power source, do not directly connect
the Ground (black) wire from the IN/OUT wiring harness to the negative side of the of the GTB 10 black box
device's power source.
Garmin Marine Network Considerations
NOTICE
A Garmin Marine Network PoE Isolation Coupler (010-10580-10) must be used when connecting any third-party
device, such as a FLIR® camera, to a Garmin Marine Network. Connecting a Power over Ethernet (PoE) device
directly to a Garmin Marine Network chartplotter damages the Garmin chartplotter and may damage the PoE
device. Connecting any third-party device directly to a Garmin Marine Network chartplotter will cause abnormal
behavior on the Garmin devices, including the devices not properly turning off or the software becoming
inoperable.
This device can connect to additional Garmin Marine Network devices to share data and update the software
from a connected Garmin chartplotter. When connecting Garmin Marine Network devices to this device, observe
these considerations.
• You must use a Garmin Marine Network cable for all Garmin Marine Network connections.
• You should not use third-party CAT5 cable and RJ45 connectors for Garmin Marine Network connections.
• You can purchase additional Garmin Marine Network cables and connectors from your Garmin dealer or
garmin.com.
13

Garmin Marine Network Connection Diagram with Relay
NOTICE
To avoid potential damage to the relay switch, GTB 10 black box device, and device being switched, you must
install this relay switch in a dry location.
This relay is automatically controlled by the GTB 10 black box device to switch power to Garmin Marine Network
devices.
GTB 10 black box device
GTB 10 black box power cable
GTB 10 IN/OUT cable, Relay 6 (Aux), white/brown wire
Optional switch for GTB 10 power (must be turned on for remote operation)
Auxiliary relay (one 12V relay included)
Power source
Garmin Marine Network cable
GMS 10 network port expander (requires a power connection)
Network device (for future use)
Negative control wire, white
Positive control wire, black
Negative load wire, blue
Positive load wire, yellow
14

NMEA 2000 Considerations
NOTICE
If you are connecting to an existing NMEA 2000 network, identify the NMEA 2000 power cable. Only one NMEA
2000 power cable is required for the NMEA 2000 network to operate properly.
A NMEA 2000 Power Isolator (010-11580-00) should be used in installations where the existing NMEA 2000
network manufacturer is unknown.
NOTE: If you are installing a NMEA 2000 power cable, you must connect it to a relay, the boat ignition switch,
or through another in-line switch. NMEA 2000 devices will drain your battery if the NMEA 2000 power cable is
connected to the battery directly.
This device can connect to a NMEA 2000 network on your boat to monitor and control compatible NMEA 2000
devices. The included NMEA 2000 cable and connector allow you to connect the device to your existing NMEA
2000 network. If you do not have an existing NMEA 2000 network you can create a basic NMEA 2000 network
using cables and connectors available from your Garmin dealer.
If you will only be monitoring part of your NMEA 2000 network remotely with the OnDeck system, you must
connect a power isolator to separate a section of the network you want to monitor (NMEA 2000 Connection
Diagram with Relay, page16).
If you are unfamiliar with NMEA 2000, you should read the “NMEA 2000 Network Fundamentals” chapter of the
Technical Reference for NMEA 2000 Products at garmin.com/manuals/nmea_2000. .
The port labeled NMEA 2000 is used to connect the device to a standard NMEA 2000 network.
15

GTB 10 black box device
GTB 10 black box power cable
Optional switch for GTB 10 power (must be turned on for remote operation)
Ignition or in-line switch for the NMEA 2000 network
Power source
NMEA 2000 compatible Garmin device
NMEA 2000 drop cable
NMEA 2000 power cable
NMEA 2000 male terminator or backbone cable extension
NMEA 2000 T-connector
NMEA 2000 female terminator or backbone cable extension
NMEA 2000 Connection Diagram with Relay
NOTICE
To avoid potential damage to the relay switch, GTB 10 black box device, and device being switched, you must
install this relay switch in a dry location.
This relay is automatically controlled by the GTB 10 black box device to switch power to NMEA 2000 devices on
a dedicated section of the NMEA 2000 network. This configuration requires two NMEA 2000 power cables and
a NMEA 2000 power isolator.
16

17

GTB 10 black box device
GTB 10 black box power cable
GTB 10 IN/OUT cable, Relay 7 (NMEA 2000), blue wire
Optional switch for GTB 10 power (must be turned on for remote operation)
NMEA 2000 power relay (one 12V relay included)
NMEA 2000 device, connected to the section of the NMEA 2000 network unaffected by the relay
Power source
NMEA 2000 device, connected to the section of the NMEA 2000 network affected by the relay
NMEA 2000 drop cable, connecting the GTB 10 device to the section of the NMEA 2000 network affected
by the relay
NMEA 2000 power cable, connected through the relay
NMEA 2000 power isolator. Allows power to be toggled on one section of the NMEA 2000 network while
not affecting power on the other section.
NMEA 2000 power cable, connected to the section of the NMEA 2000 network unaffected by the relay
Ignition or in-line switch (required) for the section of the NMEA 2000 network unaffected by the relay
Negative control wire, white
Positive control wire, black
Negative load wire, blue
Positive load wire, yellow
18

GTB 10 Specifications
Weight 0.64kg (1.4lb.)
Compass-safe distance 102mm (4in.)
Operating temperature range From -15° to 55°C (from 5° to 131°F)
Internal battery charging temperature range From 0° to 45°C (from 32° to 113°F)
Material Polycarbonate plastic
Water rating IEC 60529 IPX7 3
Fuse 7.5A, 42V fast-acting
Input voltage From 10 to 32Vdc
Max. power usage @ 10Vdc 20W
Typical current draw @ 13.2Vdc 40mA avg. (cycling standby/full-power state)
210mA avg. (full-power state)
Typical current draw in off state Up to 7mA avg.
Max. current draw @ 13.2Vdc 1.5A
NMEA 2000 LEN @ 9Vdc 2
NMEA 2000 draw 75mA max.
Backup battery life 48 hours (typical use)
Shore Power Sensor Specifications
Operating temperature range From -15° to 55°C (from 5° to 131°F)
Storage temperature range From -20° to 60°C (from -4° to 140°F)
Input voltage 100 to 240Vac
Output 5Vdc
Installation location Max. 85% humidity, non-condensing environments
Temperature Sensor Specifications
Operating temperature range From -50° to 105°C (from -58° to 221°F)
Security Sensor Specifications
Operating temperature range From -15° to 80°C (from 5° to 176°F)
3 The device withstands incidental exposure to water of up to 1m for up to 30min. For more information, go to www.garmin.com/waterrating.
19

12V Relay Switch Specifications
Operating temperature range From -15° to 85°C (from 5° to 185°F)
Storage temperature range From -40° to 155°C (from -40° to 311°F)
Control voltage (coil) 7.8 to 15.6Vdc
Load power min. (contacts) 0.1A
Load power max. (contacts) Up to 15A at 10 to 16Vdc
Up to 9A at 20 to 32Vdc
Device Dimensions
Antennas parallel to the mounting surface 215.226mm (8.47in.)
Antenna cover to antenna cover 230.72mm (9.08in.)
Antennas perpendicular to the mounting surface 132.15mm (5.20in.)
Device only, not including antennas 141.54mm (5.57in.)
Device only, not including antennas 48.89mm (1.92in.)
20