Garmin 20 Marine GPS System User Manual


 
GLONASS: Turns GLONASS
on or off. By default, the device
uses GPS to locate satellites. For increased performance in
challenging environments and faster GPS position location,
you can enable GPS and GLONASS. Using GPS and
GLONASS reduces battery life more quickly than using only
GPS.
Software Update: Allows you to check for software updates.
About: Displays the software version and unit ID.
Time Settings
Select >
Settings > System > Time
.
Time Format: Sets the device to show time in a 12-hour or a
24-hour format.
Set Time: Allows you to set the time manually or automatically
based on your GPS position.
Device Information
Specifications
Edge Specifications
Battery type Rechargeable, built-in lithium-ion battery
Battery life Up to 8 hr.
Operating
temperature range
From -15º to 60ºC (from 5º to 140ºF)
Charging temperature
range
From 0º to 45ºC (from 32º to 113ºF)
Radio frequency/
protocol
2.4 GHz
ANT+ wireless communications
protocol (
Edge 25 device only)
Bluetooth Smart wireless technology (Edge
25
device only)
Water rating IEC 60529 IPX7*
*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.
Heart Rate Monitor Specifications
Battery type User-replaceable CR2032, 3 volts
Battery life Approximately 3 years (1 hour per day)
Operating temperature
range
From -10° to 50°C (from 14° to 122°F)
Radio frequency/
protocol
2.4 GHz
ANT+ wireless communications
protocol
Water rating 1 ATM*
NOTE:
This product does not transmit heart
rate data while swimming.
*The device withstands pressure equivalent to a depth of 10 m.
For more information, go to www.garmin.com/waterrating.
Speed Sensor and Cadence Sensor Specifications
Battery type User-replaceable CR2032, 3 volts
Battery life Approximately 12 months (1 hour per day)
Operating temperature
range
From -20º to 60ºC (from -4º to 140ºF)
Radio frequency/protocol 2.4 GHz
ANT+ wireless communications
protocol
Water rating 1 ATM*
*The device withstands pressure equivalent to a depth of 10 m.
For more information, go to www.garmin.com/waterrating.
Device Care
NOTICE
Avoid extreme shock and harsh treatment, because it can
degrade the life of the product.
Avoid pressing the keys under water.
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.
Do not store the device where prolonged exposure to extreme
temperatures can occur, because it can cause permanent
damage.
Cleaning the Device
1
Wipe the device using a cloth dampened with a mild
detergent solution.
2
Wipe it dry.
Caring for the Heart Rate Monitor
NOTICE
A build up of sweat and salt on the strap can decrease the ability
of the heart rate monitor to report accurate data.
Rinse the strap after every use.
Hand wash the strap occasionally, using a tiny amount of
mild detergent, such as dishwashing liquid.
NOTE:
Using too much detergent may damage the strap.
Do not put the strap in a dryer.
When drying the strap, hang it up or lay it flat.
User Replaceable Batteries
WARNING
Do not use a sharp object to remove batteries.
Keep the battery away from children.
Never put batteries in mouth. If swallowed, contact your
physician or local poison control center.
Replaceable coin cell batteries may contain perchlorate
material. Special handling may apply. See www.dtsc.ca.gov
/hazardouswaste/perchlorate.
CAUTION
Contact your local waste disposal department to properly
recycle the batteries.
Replacing the Heart Rate Monitor Battery
1
Locate the circular battery cover on the back of the heart rate
monitor.
2
Use a coin to twist the cover counter-clockwise until it is
loose enough to remove (the arrow points to OPEN
).
3
Remove the cover and the battery.
4
Wait 30 seconds.
5
Insert the new battery with the positive side facing up.
NOTE:
Do not damage or lose the O-ring gasket.
6
Use a coin to twist the cover clockwise back into place (the
arrow points to CLOSE).
After you replace the heart rate monitor battery, you may need
to pair the heart rate monitor with the device again.
6 Device Information