background image

Alert 
Message

Cause

Device Action

%1 has a 
low battery.

Fewer than 20 hours of dive 
time remain. "%1" is 
replaced with the 
transmitter name.

The transmitter name 
flashes BATT. LOW when 
the battery is critically low.
The paired dive computer 
vibrates and plays a 
warning tone.

NO COMMS Your paired dive computer 

has lost communication 
with the transmitter for 60 
seconds.

The transmitter name 
flashes NO COMMS, 
dashed lines replace the 
tank pressure value, and 
the tank pressure value 
flashes red.
The paired dive computer 
vibrates and plays a 
warning tone if connection 
alerts are enabled.

Enabling Lost Transmitter Alerts

Your paired dive computer can lose communication with the 

transmitter when the transmitter is out of range, when the 

transmitter signal is blocked by your body or that of another 

diver, and when the transmitter loses battery power. You can 

enable an alert that notifies you when your paired dive computer 

has lost communication with the transmitter for 60 seconds.

1

On the paired dive computer, hold 

MENU

.

2

Select 

Dive Setup

 > 

Air Integration

 > 

Connection Alert

.

Device Information

Replacing the Descent T1 Battery

NOTICE

You should purchase a replacement battery only from a high-

quality manufacturer and a reputable vendor. Using a low quality 

battery could result in poor product performance and reduced 

battery life, especially at low temperatures. Do not use 

rechargeable batteries. Rechargeable batteries may have a 

higher voltage specification and can cause permanent damage 

to the device.

To replace the battery, you need a coin or flat screwdriver, a 

new 3 V CR123A lithium battery, and waterproof silicone 

grease. You may also need a replacement battery cap 

accessory.
The transmitter is powered by a 3 V CR123A lithium battery. A 

battery is pre-installed at the factory. You must carefully follow 

the battery replacement instructions to preserve the transmitter's 

waterproofing.

1

Insert a coin or flat screwdriver into the slot  , and rotate 

counter-clockwise to unscrew the battery cap.

2

Remove the battery cap and battery.

3

Insert the new battery in the transmitter, with the positive pole 

facing into the transmitter and the negative pole facing the 

battery door.

4

Inspect both gaskets   to verify they are clean, undamaged, 

and fully seated in the grooves.
If the gaskets appear worn or damaged, you can purchase a 

replacement battery cap kit, including a cap, pre-installed 

gaskets, and silicone grease. Go to the Descent T1 product 

page on 

garmin.com

 to purchase accessories.

5

Apply a thin layer of waterproof silicone grease to both 

gaskets.

6

Replace the battery cap into the transmitter, and fully tighten 

it.

Device Care

NOTICE

Do not grip the regulator or the transmitter to move, carry, or 

adjust the air tank.
Do not remove the safety plug from the base of the transmitter.
Do not use a sharp object to clean the device.
Avoid chemical cleaners, solvents, and insect repellents that can 

damage plastic components and finishes.
Thoroughly rinse the device with fresh water after exposure to 

chlorine, salt water, sunscreen, cosmetics, alcohol, or other 

harsh chemicals. Prolonged exposure to these substances can 

damage the case.
Avoid extreme shock and harsh treatment, because it can 

degrade the life of the product.
Do not store the device where prolonged exposure to extreme 

temperatures can occur, because it can cause permanent 

damage.
Discontinue use if the device is damaged or if it is stored at a 

temperature outside the specified storage temperature range.
Discontinue use if there is water ingress into the battery 

compartment. Even small amounts of water can cause corrosion 

of the electrical contacts.

Cleaning the Transmitter

1

After each dive, rinse the transmitter with fresh water to 

remove salt and debris.

2

If necessary, clean the transmitter with a soft cloth.

Specifications

Battery

3 V CR123A lithium

Battery life

Up to 100 hr.

Thread type

7

/

16

 in. (20 UNF)

Normal operating temperature

From -20 to 60°C (from -4 to 
140°F)

Underwater operating temperature From 0 to 40°C (from 32 to 104°F)
Storage temperature

From -30 to 70°C (from -22 to 
158°F)

Wireless frequency

2.4 GHz @ 0 dBm

Surface transmission range (ANT 
wireless technology)

Up to 10 m (33 ft.)

Underwater transmission range 
(sonar)

Up to 10 m (33 ft.)

Water rating

11 ATM

1

Pressure rating

300 bar (4351 psi)

Inspection interval

Inspect parts before each use for 
damage. Replace parts as 
needed.

2

Getting More Information

You can find more information about this product on the Garmin

®

website.
• Go to 

support.garmin.com

 for additional manuals, articles, 

and software updates.

• Go to 

buy.garmin.com

, or contact your Garmin dealer for 

information about optional accessories and replacement 

parts.

The device withstands pressure equivalent to a depth of 110 m. For more 

information, go to 

garmin.com/waterrating

.

Aside from normal wear and tear, performance is not affected by aging.

Device Information

5

Содержание DESCENT T1

Страница 1: ...DESCENT T1 Owner sManual ...

Страница 2: ...son or organization of such changes or improvements Go to www garmin com for current updates and supplemental information concerning the use of this product Garmin the Garmin logo and ANT are trademarks of Garmin Ltd or its subsidiaries registered in the USA and other countries Descent Garmin Dive Garmin Express and Subwave are trademarks of Garmin Ltd or its subsidiaries These trademarks may not ...

Страница 3: ...ion Calculations 3 Adding the Transmitters Data Screen to a Dive Mode 3 Diving 3 Dive Warnings 4 Starting a Dive on a Paired Descent Dive Computer 4 Viewing the Transmitter Data Screens 4 Transmitter Alerts 4 Enabling Lost Transmitter Alerts 5 Device Information 5 Replacing the Descent T1 Battery 5 Device Care 5 Cleaning the Transmitter 5 Specifications 5 Getting More Information 5 Troubleshooting...

Страница 4: ......

Страница 5: ...clear line of sight over your shoulders If you lose the signal from your transmitter you should move your arm until the signal is restored If you lose the signal from another diver you should change your body position until the signal is restored If your body is between the dive computer and another diver it may obstruct the signal from that diver s transmitter Installing the Transmitter on Your T...

Страница 6: ...arge end of the air spool into the transmitter 3 Confirm the regulator is depressurized and detached from a scuba cylinder 4 Remove the port plug from the high pressure output port of the first stage regulator 5 Connect a high pressure hose extension to the high pressure output port of the first stage regulator 6 Screw the transmitter onto the high pressure hose extension until you feel resistance...

Страница 7: ... Set Transmit Power Allows you to adjust the power setting if your transmitter is losing connection with the paired dive computer underwater About Displays the transmitter ID software version and battery status Name Allows you to enter an easily identifiable name for the transmitter Remove Allows you to remove a paired transmitter Dive Terminology Air time remaining ATR The time you may remain at ...

Страница 8: ...ive computer for more information about supported dive modes 3 Press START until the primary dive data screen appears The primary dive data screen displays up to two paired transmitters Selecting Paired Transmitters to View on Your Dive Data Screens page 3 NOTE You can use this screen to confirm your paired transmitters are connected to your dive computer prior to starting your dive 4 Descend to s...

Страница 9: ... replacement battery cap kit including a cap pre installed gaskets and silicone grease Go to the Descent T1 product page on garmin com to purchase accessories 5 Apply a thin layer of waterproof silicone grease to both gaskets 6 Replace the battery cap into the transmitter and fully tighten it Device Care NOTICE Do not grip the regulator or the transmitter to move carry or adjust the air tank Do no...

Страница 10: ...erify the transmitter ID when prompted The transmitter ID is printed on the housing 8 Keep the dive computer near the transmitter until the software update is complete My transmitter and watch lose connection underwater If your watch and transmitter communicate on the surface but lose communication underwater you can try these tips Increase the transmitter power setting Adjusting the Transmitter P...

Страница 11: ...ories 5 B battery 5 replacing 5 C cleaning the device 5 D data screens 3 4 device care 5 diving 3 4 I installing 1 2 P pairing 2 R replacing the battery 5 S settings 3 5 specifications 5 T troubleshooting 4 6 Index 7 ...

Страница 12: ...support garmin com GUID 46177B6F 52F5 4DA5 B0C5 84CE303DDB49 v1 October 2020 ...

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