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Garmin Astro 320 Handleiding

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Astro
®
320
owner’s manual
GPS-enabled dog tracking system
© 2011 Garmin Ltd. or its subsidiaries
All rights reserved. Under the copyright laws, this manual may not be copied, in whole or in part, without the
written consent of Garmin. Garmin reserves the right to change or improve its products and to make changes
in the content of this manual without obligation to notify any person 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, Astro
®
, City Navigator
®
, BlueChart
®
, and TracBack
®
, registered in the USA and
other countries. DC
™
40, ANT
™
, ANT+
™
, BaseCamp
™
, chirp
™
, HomePort
™
, and myGarmin
™
are trademarks
of Garmin Ltd. or its subsidiaries. These trademarks may not be used without the express permission of
Garmin.
Windows
®
is a registered trademark of Microsoft Corporation in the United States and/or other countries.
Mac
®
is a registered trademark of Apple Computer, Inc. microSD
™
is a trademark of SD-3C, LLC. Other
trademarks and trade names are those of their respective owners.
Astro 320 and DC40 Owner’s Manual 3


Getting Started ............................. 5
Installing Batteries in the Astro ..... 5
Charging the DC 40 ...................... 6
Turning On the Devices ................ 6
Attaching the DC 40 to Your
Dog ............................................ 7
Device Overviews ......................... 8
Manual Conventions ................... 10

Communication with the
DC 40 ....................................... 13
Navigating to Your Dog ............... 13
Editing Dog Information .............. 15
Tracking Your Dog on the Map ... 16
Adding Dogs ............................... 16
Collar Lock.................................. 18
Astro and DC 40 Tips ................. 18


Waypoints ................................... 21
Routes ........................................ 24
Tracks ......................................... 25
Sharing Data Wirelessly ............. 29

Map............................................. 30
Find Menu................................... 31
Detailed Maps............................. 33

Compass .................................... 34
Navigating with Sight ‘N Go ........ 36
Trip Computer ............................. 37
Elevation Plot.............................. 38
Proximity Alarms ......................... 39
Calculating the Area ................... 39
Satellite ....................................... 40

Viewing the Calendar and
Almanacs ................................. 41
4 Astro 320 and DC40 Owner’s Manual
Calculator ................................... 41
Alarm Clock ................................ 42
Stopwatch ................................... 42
Geocaches ................................. 42

Customizing the Main Menu ....... 45
Customizing Data Fields............. 45
Proles........................................ 45
Customizing Dashboards ........... 46
System Settings.......................... 47
Dog Settings ............................... 47
Display Settings .......................... 48
Setting the Device Tones ............ 48
Map Settings............................... 49
Tracks Settings ........................... 50
Changing the Units of
Measure ................................... 50
Time Settings .............................. 50
Position Format .......................... 51
Heading Settings ........................ 51
Altimeter Settings ....................... 52
Geocache Settings ..................... 53
Routing Settings ......................... 53
Marine Settings........................... 54
Fitness Settings .......................... 55

Viewing Device Information ........ 56
Caring for the Devices ................ 56
Specications ............................. 57
Battery Information ..................... 58
Data Management ...................... 60

Contacting Garmin Product
Support .................................... 65
Registering Your Device ............. 65
Buying Accessories .................... 65
Replacement Parts ..................... 67
Data Field Options ...................... 69
Troubleshooting .......................... 73

Astro 320 and DC40 Owner’s Manual 5
Introduction


See the Important Safety and Product
Information guide in the product
box for product warnings and other
important information.

notice
Do not attempt to track your dog using
the Astro
®
and the DC
™
40 until you
have completed these tasks.
1. Install batteries in the Astro
(page 5).
2. Charge the DC 40 (page 6).
3. Register your device (page 65).
4. Turn on the devices (page 6).
5. Acquire satellites (page 7).
6. Calibrate the compass (page 36).
7. Attach the DC 40 to your dog
(page 7).
8. Start a new hunt (page 21).


The Astro operates on two AA batteries
(not included). Use NiMH or lithium
batteries for best results.
1. Remove the battery cover by
turning the D-ring 1/4 turn
counterclockwise and pulling up.
2. Insert the batteries, observing
polarity.
3. Replace the battery cover.
6 Astro 320 and DC40 Owner’s Manual
Introduction

Charge the DC 40 completely before
using it on a hunt. Charging a depleted
DC 40 battery takes 4½ hours.
1. Connect the power cable
➊
to an
appropriate electrical source.
➊
➋
2. Slide the charging clip
➋
onto the
DC 40.
3. Charge the DC 40 completely.
The blue LED ashes when the
DC 40 is charging. The blue LED
is solid when the DC 40 is fully
charged.

1. On the Astro, press and hold
➊
.
➊
2. Follow the on-screen instructions.
3. On the DC 40, press and hold
➋
.
Astro 320 and DC40 Owner’s Manual 7
Introduction
➋
➌
The red LED
➌
ashes (single
blink) when the DC 40 is on and
searching for satellite signals.
TIP: Turn on the DC 40, and let it
acquire satellites before you put it
on your dog.

Before you can track your dog using
the Astro and the DC 40, both devices
must acquire GPS satellite signals.
Acquiring satellite signals can take a
few minutes.
1. Go outdoors to an open area, away
from tall buildings and trees.
2. Press and quickly release
.
The status page appears. The
bars indicate satellite strength.
3. Wait for the DC 40 to acquire
satellite signals.


DC 40 is searching for
satellite signals.


DC 40 has acquired
satellite signals.


DC 40 is tracking
seven or more
satellites (best GPS
performance).


Attach the DC 40 to your dog’s
neck with the VHF antenna
pointing up (page 9) and the LED
facing forward.
8 Astro 320 and DC40 Owner’s Manual
Introduction


notice
Avoid using a high-powered radio
(greater than 5 watts) in close
proximity to the Astro. It may cause
irreversible damage to the Astro.
➍
➌
➋
➊
➎
➏
➑
➒
➐
➊
GPS antenna
➋
VHF antenna
➌
Power key
➍
Display
➎
Keypad
➏
USB port (under weather cap)
➐
microSD
™
card slot (under battery
door) (page 60)
➑
Mounting spine
➒
Battery cover D-ring
Astro 320 and DC40 Owner’s Manual 9
Introduction

➊
➋
➌
➍
➊
VHF antenna
➋
Collar
➌
GPS antenna
➍
Power key

 Press to view the Dog
Tracker page.
 Press to mark your
current location.
 Press to cancel data
entry or return to the
previous menu or page.
 Press to view the map.
10 Astro 320 and DC40 Owner’s Manual
Introduction
 Press to open the menu
for the active page.
Press twice to open the
main menu.
 Press to select options
and acknowledge
messages.
 Press to view or scroll
through options and to
move the map pointer.
 Press to zoom in on the
map.
 Press to zoom out on
the map.

1. Press and quickly release .
2. Press OUT.

1. Press and quickly release .
2. Use the Rocker to adjust the
brightness levels.
TIP: You can also press and
quickly release to cycle through
the brightness levels.
3. Press ENTER to select a brightness
level and close the menu.

 Use the keys on the
device.
 Use the  to select
an option or an item in a
list, and press .
 The location on a page
where data is entered
or an option appears. A
highlighted eld appears
blue.
Astro 320 and DC40 Owner’s Manual 11
Introduction


A bar that appears on
the right side of a list that
is too long to t on the
screen. Use the 
to scroll through a list.
Press  or  to scroll
a set of items.
 The original factory
settings. You can
customize the settings,
but you can always
revert back to the factory
settings by selecting
.
The small arrows indicate
that you should select a
series of items in order,
for example, “Select
 > .”

Status information is provided on the
main menu and when you press and
quickly release .
Indicates the satellite signal
strength.
Blinks when the device
detects a signal (for example,
a DC 40) on the channel it is
receiving.
Indicates the remaining
battery power.

When an on-screen message appears,
you can press ENTER to acknowledge
the message and close the window.
Messages also indicate temporary
conditions, such as “Calculating
Route.” The message window closes as
soon as the process is complete.
12 Astro 320 and DC40 Owner’s Manual
Introduction

A keyboard appears when you enter
text.
• Use the Rocker to select a
character, and press ENTER.
• Select to backspace.
• Select to shift.
• Press IN or OUT to change the
character mode of the keyboard.
• Select Done to save the text and
close the keyboard.
Astro 320 and DC40 Owner’s Manual 13
Tracking Your Dog

NOTE: The DC 40 does not transmit
its location to the Astro, and the
Astro does not indicate the location
of the DC 40, until both devices have
acquired satellite signals.


The DC 40 that was packaged with
your Astro was linked with the Astro
at the factory. If you are using a
DC 40 that you purchased separately,
follow the instructions for adding
a new dog on page 16 to establish
communications with the Astro.

1. From the main menu, press DOG >
ENTER.
The dog information appears.
2. Select Go.
3. Follow the magenta line on the
map.

1. From the main menu, press DOG to
view the Dog Tracker page.
The direction to the dog and
distance of the dog from the Astro
appears.
14 Astro 320 and DC40 Owner’s Manual
Tracking Your Dog
➋
➌ ➍
➊
➊
Dog pointer (direction to
the dog)
➋
Dog name
➌
Dog status icon (page 14)
➍
Distance to the dog
2. If you have additional dogs, use the
Rocker to scroll through the list of
dogs.
The Astro can keep track of 10
dogs.
3. Press ENTER to view the dog
information.

The dog you are tracking is identied
and the dog pointer indicates its
direction from you. The dog pointer is
most accurate when the dog is farther
than 30 feet (9.1 meters) away. At less
than that distance, “NEAR” appears
instead of a distance and the dog
pointer is shortened.
NOTE: When you are close to the dog,
the dog pointer may be inaccurate.

Sitting
Running
On Point
Astro 320 and DC40 Owner’s Manual 15
Tracking Your Dog
Treed
Unknown*
*The unknown status icon indicates
that the DC 40 has not acquired a
satellite signal and that the Astro
cannot determine the location of the
dog.

The Astro assigns a default name,
“Dog,” to the DC 40 packaged with the
Astro.

1. From the main menu, press DOG >
ENTER.
The dog information appears.
2. Select the name eld.
The on-screen keyboard appears.
3. Enter the name of the dog.

This requires wireless communication
with the DC 40. You must turn on the
DC 40 and bring it within range of the
Astro.
You can identify the dog type so that
the appropriate dog status symbols
appear.
1. From the main menu, press DOG >
ENTER.
2. Press MENU.
3. Select Change Dog Type.
4. Select a type.
16 Astro 320 and DC40 Owner’s Manual
Tracking Your Dog


Press MAP to follow your dog on
the map.
➌
➊
➋
➍
• The dog location icon appears
with the dog name
➊
.
• The track of the dog’s
movements appears as a red
(color is customizable) line
➋
.
• Your location is indicated by the
map pointer
➌
.
• The track of your movements
appears as a blue line
➍
.

When the map orientation is Track Up,
objects on the map appear to rotate
around your position. As you move,
the entire map reorients in the direction
you are facing. To stabilize the objects,
set the orientation to North Up
(page 49).

The Astro can track up to 10 dogs
with DC 40 collars. If you purchase
additional DC 40 devices, you can link
them to the Astro. To link, the Astro
must be close enough to the DC 40 to
touch it, or you must know the DC 40
ID number.
1. From the main menu, press DOG
twice.
2. Select Add Dog.
Astro 320 and DC40 Owner’s Manual 17
Tracking Your Dog
3. Follow the on-screen instructions.

Each dog you track has its own ID
number. If two dogs within range of
the Astro have the same ID, the Astro
warns you of a conicting ID signal.
Follow the on-screen instructions to
resolve the conict.
When possible, you should allow the
Astro to automatically assign IDs. If
necessary, you can manually assign a
new ID number to a dog.

This requires wireless communication
with the DC 40. You must turn on the
DC 40 and bring it within range of the
Astro.
1. From the main menu, press DOG
twice.
2. Select a dog.
3. Select Show Info.
4. Press MENU.
5. Select Comm. Settings.
6. Select an unassigned and
nonconicting ID.
7. Change the update rate (optional).
Both 30-second and two-minute
rates reduce battery drain, but they
create a less-detailed dog track and
collected statistics.
8. Bring the Astro within a few feet of
the DC 40.
9. Follow the on-screen instructions.

1. From the main menu, press DOG
twice.
2. Select a dog in the list.
3. Select Remove.
18 Astro 320 and DC40 Owner’s Manual
Tracking Your Dog

You can use the Collar Lock feature to
PIN protect your dog’s ID signal. Other
Astro users must enter the PIN in order
to track your dog. Other Astro users
can still add your dog by physically
touching the Astro to the DC 40.

This requires wireless communication
with the DC 40. You must turn on the
DC 40 and bring it within range of the
Astro.
1. From the main menu, press DOG >
ENTER > MENU.
2. Select Change PIN.
3. Enter a unique PIN.
NOTE: If you forget the PIN, the
Collar Lock feature can be overridden
by physically touching the Astro to the
DC 40.

• Turn on the DC 40 and allow it to
acquire satellites before you put the
DC 40 on your dog. This allows the
DC 40 to acquire satellite signals
much faster.
• Bring extra AA batteries for your
Astro (page 58).
• Use a fully charged DC 40. A
fully charged DC 40 operates for
approximately 17 hours when using
ve-second interval reporting.
• Use line-of-sight radio
communication (page 20).
• The Astro can track up to 10 dogs
with DC 40 collars. Only three dogs
can be viewed at one time on the
Dog Tracker page. To reduce the
text size, press MENU, and select
Small Numbers.
Astro 320 and DC40 Owner’s Manual 19
Tracking Your Dog
• Go to www.garmin.com/products
/astro for more information and
www.garmin.com/astro for a
tutorial.


If you are moving the dogs during a
hunt and you do not want to record
the transportation of the dogs, you can
pause the tracking of all dogs.
1. From the main menu, press DOG >
MENU.
2. Select Pause All Tracking.
You can select Resume when you
are ready to continue the hunt.

1. From the main menu, press DOG >
ENTER.
2. Select Reset.
20 Astro 320 and DC40 Owner’s Manual
Tracking Your Dog

The Astro and DC 40 use radio signals to communicate. Objects in the path of
radio signals degrade the quality of the signals. Keeping an unobstructed line of
sight between your Astro and your dog’s DC 40 produces the best communication
signal. Obstructed radio waves result in a poor signal. To achieve the best line-of-
sight conditions, move to the highest elevation point in your area (for example, on
the top of a hill).
Best
Good
Poor
Astro 320 and DC40 Owner’s Manual 21
Waypoints, Routes, and Tracks



Waypoints are locations you record and
store in the device. After you mark a
location with your Astro, it is saved as
a waypoint.

1. From the main menu, select Start
New Hunt.
2. Follow the on-screen instructions.
After the hunt, you can navigate back
to your vehicle.

1. Press MARK.
2. Select New or choose a default
location name such as Truck or
Camp.
3. Select Done.

You can mark a covey location and
enter the estimated number of birds
ushed and the number of birds taken.
1. Press MARK.
2. Select Covey.
3. Enter the number of birds ushed.
4. Enter the number of birds taken.
5. Select Done.


1. Press MAP.
2. Move the map pointer to a location.
3. Press ENTER > MENU.
4. Select Save as Waypoint.

1. From the main menu, select Find >
Waypoints.
2. Select a waypoint.
3. Select Go.
22 Astro 320 and DC40 Owner’s Manual
Waypoints, Routes, and Tracks
TIP: For navigation settings, see
page 53.

Before you can edit a waypoint, you
must create a waypoint.
1. From the main menu, select Tools >
Waypoint Mgr..
2. Select a waypoint.
3. Select an attribute (such as the
name).
4. Enter the new information.

1. From the main menu, select Find >
Waypoint.
2. Press MENU.
3. Select Spell Search.
4. Enter the name of the waypoint.
Matches appear as you select
characters in the name.
5. Select the waypoint from the list.


1. From the main menu, select Tools >
Waypoint Mgr..
2. Select a waypoint.
3. Press MENU.
4. Select Find Near Here.
5. Select a category.
The list displays waypoints near the
original waypoint.

1. From the main menu, select Tools >
Waypoint Mgr..
2. Select a waypoint.
3. Press MENU.
4. Select Move Waypoint.
5. Move the marked location to a new
location on the map.
6. Press ENTER.
Astro 320 and DC40 Owner’s Manual 23
Waypoints, Routes, and Tracks

1. From the main menu, select Tools >
Waypoint Mgr..
2. Select a waypoint.
3. Press MENU.
4. Select Delete > Yes.

You can change the position of a
waypoint. For example, if you move
your vehicle, you can change the
location to your current position.
1. From the main menu, select Tools >
Waypoint Mgr..
2. Select a waypoint.
3. Press MENU.
4. Select Reposition Here.
The position changes to your
current location.

You can rene a waypoint location
for more accuracy. When averaging,
the Astro takes several readings at the
same location and uses the average
value to provide more accuracy. For
best results, wait 90 minutes between
readings.
1. Press MARK.
2. Select New.
3. Press MENU.
4. Select Average Location.
5. Follow the on-screen instructions.
6. When the Sample Condence eld
reaches the level of accuracy you
want, select Save > Done.
24 Astro 320 and DC40 Owner’s Manual
Waypoints, Routes, and Tracks

You can create a new location by
projecting the distance and bearing
from a marked location to a new
location.
1. From the main menu, select Tools >
Waypoint Mgr..
2. Select a waypoint.
3. Press MENU.
4. Select Project Location.
5. Follow the on-screen instructions.
6. Select Save.

A route is a sequence of points or saved
locations that leads you to your nal
destination. To customize your route
settings, see page 53.

1. From the main menu, select Tools >
Route Planner > Create Route.
2. Select Select First Point.
3. Select a category.
4. Select the rst point on the route.
5. Select Use.
6. Repeat steps 2 through 5 to add
more points to the route.

1. From the main menu, select Tools >
Route Planner.
2. Select a route.
3. Select View Map > Go.

1. From the main menu, select Tools >
Route Planner.
2. Select a route.
3. Select Edit Route.
4. Select a point.
Astro 320 and DC40 Owner’s Manual 25
Waypoints, Routes, and Tracks
5. Select an option:
• To view the point on the map,
select Review.
• To change the order of the point
on the route, select Move Down
or Move Up.
• To add an additional point on
the route, select Insert.
The additional point is inserted
before the point you are editing.
• To remove the point from the
route, select Remove.

1. From the main menu, select Tools >
Active Route.
2. Select a point in the route to view
additional details.

1. From the main menu, select Tools >
Route Planner.
2. Select a route.
3. Select Reverse Route.

1. From the main menu, select Tools >
Route Planner.
2. Press MENU.
3. Select Delete All > Yes.

A track is a recording of your path
and of the path of your dog. The track
log contains information about points
along the recorded path, including
time, location, and elevation for each
point.
26 Astro 320 and DC40 Owner’s Manual
Waypoints, Routes, and Tracks

1. From the main menu, select Setup
> Tracks > Track Log.
2. Select Record, Do Not Show or
Record, Show On Map.
If you select Record, Show On
Map, a line on the map indicates
your track.
3. Select Record Method.
4. Select an option:
• Select Distance, and enter a
distance interval.
• Select Time, and enter a time
interval.
• Select Auto to specify the
interval of frequency.
NOTE: Using the Most Often
interval provides the most track
detail, but lls up the device
memory quicker.
As you move with the device turned
on, a track log is created.

1. From the main menu, select Tools >
Track Manager.
2. Select a track.
3. Select View Map.


1. From the main menu, select Tools >
Track Manager.
2. Select a track.
3. Select Elevation Plot.
4. Complete an action:
• Press left or right on the Rocker
to scroll across the track.
While scrolling, press ENTER
to show the point on the map.
• Press up or down on the Rocker
to set the zoom range.
Astro 320 and DC40 Owner’s Manual 27
Waypoints, Routes, and Tracks

Using Digital Elevation Models (DEM)
maps, you can create a track elevation
prole that includes elevation data. Go
to www.garmin.com/cartography
/ontheTrail for more information about
US Topo maps.

1. From the main menu, select Tools >
Track Manager.
2. Select a track.
3. Select Save Track.
You are prompted to enter a name
for the track.
4. Follow the on-screen instructions.

1. From the main menu, select Tools >
Track Manager.
2. Select a track.
3. Select Save Portion.
4. Follow the on-screen instructions.


1. From the main menu, select Tools >
Track Manager.
2. Select a track.
3. Select Map.
4. Move the map pointer to a location
on the track.
5. Press MARK.
6. Select New.
7. If necessary, edit the location
information.
28 Astro 320 and DC40 Owner’s Manual
Waypoints, Routes, and Tracks

You can use TracBack
®
with a current
track to navigate back to the beginning
of a track. This can be helpful when
nding your way back to camp or your
vehicle.
1. From the main menu, select Tools >
Track Manager.
2. Select Current Track > View Map
> TracBack.
Your start point, track, and end
point appear on the map.
3. Navigate using the map (page 30)
or compass (page 34).

You can archive saved tracks to save
memory space.

1. From the main menu, select Tools >
Track Manager.
2. Select a track.
3. Select Archive.


1. From the main menu, select Setup
> Tracks > Auto Archive.
2. Select When Full, Daily, or
Weekly.

1. From the main menu, select Tools >
Track Manager.
2. Select Current Track or Dog
Tracks.
3. If necessary, select the dog.
4. Select Clear Current Track > Yes.

1. From the main menu, select Tools >
Track Manager.
2. Select a track.
3. Select Delete > Yes.
Astro 320 and DC40 Owner’s Manual 29
Waypoints, Routes, and Tracks

Before you can share data wirelessly,
you must be within 10 feet (3 m) of a
compatible Garmin device.



1. From the main menu, select Tools >
Share Wirelessly.
2. Select Send or Receive.
3. Follow the on-screen instructions.

Before you can share dog information
with another Astro user, the user must
enable their Astro to receive wirelessly
and bring it within range of the sending
device and DC 40.
1. From the main menu, press DOG
twice.
2. Select a dog.
3. Select Share Wirelessly.
Your device sends the dog
name, unit ID, and update rate
information.

1. From the main menu, press DOG
twice.
2. Press MENU.
3. Select Receive Wirelessly.
30 Astro 320 and DC40 Owner’s Manual
Navigation


The Astro has a preloaded basemap
that includes cities, highways, and
lake and river outlines. The example
shows enhanced map detail using City
Navigator
®
. Go to www.garmin.com.
The position icon represents your
location on the map. As you travel,
the position icon moves and leaves a
track log (trail). Waypoint names and
symbols also appear on the map.
➊
➋
➌
➍
➎
➊
Map orientation arrow
➋
Route instructions
➌
Route to destination
(page 31)
➍
Your current location
➎
Map scale

Press IN and OUT to change the
map scale.

1. From the map, press MENU.
2. Select Setup Map > Orientation.
3. Select an orientation:
• Select North Up to show north
at the top of the page.
• Select Track Up to show your
current direction of travel at the
top of the page.
• Select Automotive Mode to
show a perspective view.
Astro 320 and DC40 Owner’s Manual 31
Navigation

You can measure the distance between
two points.
1. Press MAP > MENU.
2. Select Measure Distance.
An arrow appears at your current
location.
3. Move the arrow to the point you
want to measure from, and press
ENTER.
4. Move the arrow to another point.
The distance appears on the map.


You can display up to four data elds
at the top of the map to provide travel
and navigational information.
1. From the main menu, select Setup
> Map > Data Fields.
2. Select the number of data elds.
3. Press MAP > MENU.
4. Select Change Data Fields.
5. Select a eld.
A list of data eld options appears
(page 69).
6. Select an option.

You can use the Find menu to search
for waypoints, cities, and coordinates.
You can download and navigate
to photos, tracks, and geocaches.
Additional categories appear if you
have optional, compatible detailed
maps loaded on the device. When you
open a category, the list contains items
near your current location or the map
pointer (if active).

You can navigate to a destination using
the map or compass.
1. From the main menu, select Find.
2. Select a category.
32 Astro 320 and DC40 Owner’s Manual
Navigation
3. Select a destination.
4. Select Go.
The map page opens with your
route marked with a magenta line.
5. Navigate to the destination
(page 21).

From the main menu, select Find >
Stop Navigation.


1. From the main menu, select Find >
Recent Finds.
2. Select an item.


1. From the main menu, select Find.
2. Select Waypoints, Tracks, Routes,
or Cities.
A list of items near your current
location appears.
3. Select an item from the list.

Before you can navigate to a photo
with location information, you must
download (http://my.garmin.com) or
transfer a photo to the device
(page 62).
1. From the main menu, select Find >
Photos.
2. Select a photo.


You can change the map datum format
(page 51).
1. From the main menu, select Find >
Coordinates.
2. Enter the coordinates.
Astro 320 and DC40 Owner’s Manual 33
Navigation

You can use optional City Navigator
maps to search for addresses,
intersections, and other locations.
The detailed maps contain millions of
points of interest, such as restaurants,
hotels, and auto services. Go to
www.garmin.com/us/maps/.

1. From the main menu, select Find >
Addresses.
2. Enter the state or province, city,
street number, and street name.
Matches appear as you select
characters in the name.
3. Select the address from the list.

1. From the main menu, select Find.
2. Select an option to view points of
interest near your current location:
• Select All Points of Interest.
• Select a POI category.
3. Press MENU to narrow your
search.
4. Select an item from the list.
34 Astro 320 and DC40 Owner’s Manual
Navigation Tools

Navigation tools include features that
compliment the GPS functions of the
Astro.
• Compass (page 34)
• Sight ‘N Go (page 36)
• Trip computer (page 37)
• Elevation plot (page 38)
• Proximity alarms (page 39)
• Area calculation (page 39)
• Satellite (page 40)

The Astro has a 3-axis electronic
compass.

1. From the main menu, select Tools >
Compass.
2. Turn toward the direction of the
bearing pointer until the arrow
is pointing toward the top of the
compass.

➋
➌
➊
• The compass provides navigation
data
➊
such as current speed and
estimated arrival time.
• When navigating to a destination,
the bearing pointer
➋
points to
your destination, regardless of the
direction you are moving. When
Astro 320 and DC40 Owner’s Manual 35
Navigation Tools
the bearing pointer points toward
the top of the compass, you are
traveling directly toward your
destination.
• The compass ring
➌
moves to
indicate North orientation.


This is most useful if you are
navigating on water or where there
are no major obstacles in your path. It
also helps you avoid hazards to either
side of the course, such as shoals or
submerged rocks.
1. From the main menu, select Setup
> Heading > Go To Line (Pointer)
Course (CDI).
➋
➍
➌➊
• The course pointer
➊
indicates your relationship to
a course line
➋
leading to the
destination.
• The course pointer provides an
indication of drift (right or left)
according to the scale
➌
.
• The scale refers to the distance
between dots on the course
deviation indicator
➍
.
• The course line to your
destination is based on your
original starting point.
36 Astro 320 and DC40 Owner’s Manual
Navigation Tools
2. Move back to the “course line to
destination” to compensate for
deviation and to get back on course.

notice
Calibrate the electronic compass
outdoors. Do not stand near objects that
inuence magnetic elds, such as cars,
buildings, or overhead power lines.
The Astro has a 3-axis electronic
compass. You should calibrate the
compass after moving long distances,
experiencing temperature changes, or
changing the batteries.
1. From the main menu, press DOG >
MENU.
2. Select Calibrate Compass > Start.
3. Follow the on-screen instructions.


You can show pointers on the compass
in order to track the direction of the
rst three dogs in your dog list.
1. From the main menu, select Tools >
Compass.
2. Press MENU.
3. Select Show Dog Pointers.


You can point the device at an object
in the distance, such as a water tower,
lock in the direction, and then navigate
to the object.
1. From the main menu, select Tools >
Sight ‘N Go.
The bearing pointer points to the
top of the compass.
2. Point the device at an object.
3. Select Lock Direction.
Astro 320 and DC40 Owner’s Manual 37
Navigation Tools
4. Select an option:
• Select Set Course to navigate to
the distant object.
• Select Project Waypoint
(page 24).

The trip computer displays your current
speed, average speed, maximum
speed, trip odometer, and other helpful
statistics.

1. From the main menu, select Tools >
Trip Computer.
2. Press MENU.
3. Select an option:
• Select Big Numbers to change
the size of the numbers shown
on the trip computer page.
• Select Change Data Fields
(page 69).
• Select Change Dashboard
to change the theme and
information displayed on the
dashboard.
NOTE: Your customized
settings are remembered by the
dashboard, and will not be lost
when you change proles
(page 45).

For accurate information, reset the trip
information before beginning a trip.
1. From the main menu, select Tools >
Trip Computer.
2. Press MENU.
3. Select Reset.
4. Select the items you want to reset
or select Reset All Settings.
38 Astro 320 and DC40 Owner’s Manual
Navigation Tools

By default, the elevation plot displays
the elevation for distance. To customize
the elevation plot, see page 52.


1. From the main menu, select Tools >
Elevation Plot.
2. Press left or right on the Rocker to
scroll across the plot.
3. Select individual points on an
elevation plot or a pressure plot to
view the elevation (or pressure)
reading, the time of day, and the
date when the point was recorded.


1. From the main menu, select Tools >
Elevation Plot.
2. Press left or right on the Rocker to
scroll across the plot.
3. Press ENTER.
The point appears on the map with
location coordinates, the compass
bearing, and the distance from your
current location.
4. Press MARK to save the point as a
waypoint.
5. Navigate to the waypoint (page 21).

1. From the main menu, select Tools >
Elevation Plot.
Astro 320 and DC40 Owner’s Manual 39
Navigation Tools
2. Press MENU.
3. Select Adjust Zoom Ranges.
4. Use the Rocker to set the zoom
range on the vertical axis.
5. Use the Rocker to set the zoom
range on the horizontal axis.

1. Go to a location where the elevation
or barometric pressure is known.
2. From the main menu, select
Setup > Altimeter > Calibrate
Altimeter.
3. Follow the on-screen instructions.

Proximity alarms alert you when
you are within a specied range of a
particular location. A tone sounds when
you enter the designated radius.

1. From the main menu, select Tools
> Proximity Alarms > Create
Alarm.
2. Select a category.
3. Select a location.
4. Select Use.
5. Enter a radius.
After you set the proximity alarm, you
can customize tones (page 48).

1. From the main menu, select Tools >
Proximity Alarms.
2. Select an alarm.
3. Select Delete > Yes.

1. From the main menu, select Tools >
Area Calculation > Start.
2. Walk around the perimeter of the
area you want to calculate.
40 Astro 320 and DC40 Owner’s Manual
Navigation Tools
3. Select Calculate when nished..
4. If necessary, select Change Units
to change the units of measure.
5. Select Save Track.

The satellite page shows your current
location, GPS accuracy, satellite
locations, and signal strength.

1. From the main menu, select Tools >
Satellite.
2. Press MENU.
3. If necessary, select Track Up to
change the view of the satellites to
be oriented with your current track
toward the top of the screen.
4. If necessary, select Multicolor
to assign a specic color to the
satellite in the view and to the
signal strength bar of that satellite.

1. From the main menu, select Tools >
Satellite.
2. Press MENU.
3. Select Use With GPS Off.

Before you can simulate a location,
you must turn off GPS.
1. From the main menu, select Tools >
Satellite.
2. Press MENU.
3. Select Set Location On Map.
4. Select a location.
5. Select Use.
Astro 320 and DC40 Owner’s Manual 41
Device Tools



You can view device activity, such
as when a waypoint was saved, and
almanac information for the sun and
moon, and hunting and shing.
1. From the main menu, select Tools.
2. Select an option:
• To view device activity for
specic days, select Calendar.
• To view the sunrise, sunset,
moonrise, and moonset
information, select Sun and
Moon.
• To view the predicted best times
for hunting and shing, select
Hunt and Fish.
3. If necessary, use the arrows to view
a different month.
4. Select a day.

The Astro has a standard calculator and
a scientic calculator.


1. From the main menu, select Tools >
Calculator.
2. Complete an action:
• Use the standard calculator.
• Press MENU, and select
Scientic to use the scientic
calculator functions.
42 Astro 320 and DC40 Owner’s Manual
Device Tools


If you are not currently using the
device, you can set the device to turn
on at a specic time.
1. From the main menu, select Tools >
Alarm Clock.
2. Select the time eld to enter the
time.
3. Select Turn Alarm On.
4. Select an option.
The alarm sounds at the selected time.
If the device is off at the alarm time,
the device turns on and sounds the
alarm.


1. From the main menu, select Tools >
Stopwatch.
2. If necessary, press MENU to set
how the stopwatch records laps.
3. Select an option:
• Select Lap by Button Press to
manually end the lap each time.
• Select Lap by Distance to
automatically mark the lap at a
specic distance.
To set the distance units and
value, press MENU, and select
Set Lap Distance.

A geocache is like a hidden treasure.
Geocaching is when you hunt for
hidden treasures using GPS coordinates
posted online by those hiding the
geocache.
Astro 320 and DC40 Owner’s Manual 43
Device Tools

1. Connect your device to a computer
(page 61).
2. Go to www.opencaching.com.
3. If necessary, create an account.
4. Sign in.
5. Follow the on-screen instructions.

Before you can navigate to a geocache,
you must download (page 43) or
wirelessly send a geocache to the
device (page 29).
1. From the main menu, select Tools >
Geocaches.
2. Select a geocache.
3. Select Go to navigate to the
geocache location.
When a geocache is found, the
Astro marks the cache as found,
logs an entry into the calendar, and
shows the nearest cache.

You can lter your geocache list based
on certain factors, such as the level of
difculty.
1. From the main menu, select Find >
Geocaches.
2. Press MENU.
3. Select Apply Filter > Quick
Filter.
4. Select items to lter.
5. Select Search.


You can create and save custom lters
for geocaches based on specic factors
you select. After you set up the lter,
you can apply it in the geocaches list.
1. From the main menu, select Setup
> Geocaches > Filter Setup >
Create Filter.
2. Select items to lter.
44 Astro 320 and DC40 Owner’s Manual
Device Tools
3. Select an option:
• To apply the lter to the
geocache list, select Search.
• To save the lter, press BACK .
After it is saved, the lter is
automatically named.

1. From the main menu, select Setup
> Geocaches > Filter Setup >
Create Filter.
2. Select a lter.
3. Select Edit Filter or Edit Name.

A chirp
™
is a small Garmin accessory
that you can program and leave in a
geocache. Only the owner of the chirp
can program a chirp, but anyone can
nd a chirp in a geocache. For more
information about programming a
chirp, see the chirp Owner’s Manual at
www.garmin.com.

1. From the main menu, select Setup
> Geocaches.
2. Select chirp™ Searching > On.

1. From the main menu, select Find
> Geocaches > Show chirp™
Details.
2. Begin navigating to a geocache.
When you are within 32.9 feet (10
m) of the geocache that contains
a chirp, details about the chirp
appear.
3. If available, select Go to navigate
to the next stage of the geocache.
Astro 320 and DC40 Owner’s Manual 45
Customizing Your Device




You can move, add, or delete items in
the main menu.
1. From the main menu, press MENU.
2. Select Change Item Order.
3. Select a menu item.
4. Select an option:
• Select Move and change the
order of the list.
• Select Insert to add a new item
to the list.
• Select Remove to delete an item
from the list.

Before you can change the map data
elds, you must enable them (page 31).
1. From the map, trip computer,
compass, or elevation plot, press
MENU.
2. Select Change Data Fields.
3. Select a data eld.
4. Select an option.
For data eld descriptions, see
page 69.

Proles are a collection of settings that
optimize your device based on how
you are using it. For example, your
settings and views can be different
when you are using the device for
hunting or geocaching.
When you are using a prole and you
change settings such as data elds or
units of measurement, the changes
46 Astro 320 and DC40 Owner’s Manual
Customizing Your Device
are saved automatically as part of the
prole.

1. From the main menu, select Tools >
Prole Change.
2. Select a prole.

You can customize your settings and
data elds for a particular activity or
trip.
1. Customize the settings as necessary
(pages 47–55).
2. Customize the data elds as
necessary (page 45).
3. From the main menu, select Tools >
Prole Change.
4. Press MENU.
5. Select Setup Proles > Create
New Prole > OK.

1. From the main menu, select Tools >
Prole Change.
2. Select a prole.
3. Select Edit Name.
4. Enter the new name.

1. From the main menu, select Tools >
Prole Change.
2. Select a prole.
3. Select Delete > Yes.

Dashboards are a custom grouping of
data that can be helpful to a specic or
general task, such as geocaching. You
can customize the dashboard for the
compass or trip computer.
1. Open the page for which you want
to customize the dashboard.
Astro 320 and DC40 Owner’s Manual 47
Customizing Your Device
2. From the compass or trip computer,
press MENU.
3. Select Change Dashboard.
4. Select a dashboard.

From the main menu, select Setup >
System.
• GPS—sets the GPS to Normal,
WAAS/EGNOS (Wide Area
Augmentation System/European
Geostationary Navigation Overlay
Service), or Demo Mode (GPS
off). For information about WAAS,
go to www.garmin.com/aboutGPS
/waas.html.
• Language—sets the text language
on the device.
NOTE: Changing the text language
does not change the language of
user-entered data or map data, such
as street names.
• Battery Type—allows you to select
the type of AA battery you are
using (page 57).

From main menu, select Setup > Dogs.
• Dog Track Length on Map—sets
the length (duration in minutes or
hours) of the dog track on the map.
• Zoom Map to Dogs—
automatically zooms out the map to
show all of the dogs’ locations and
your location unless you use the
Rocker to manually pan the map.
• Dog Alerts—sets dog alerts to
Tone Only, Vibrate Only, Tone
and Vibrate, or Off.
◦ On-Point Alert—indicates that
the dog is on-point.
◦ Treed Alert—indicates that the
dog has treed quarry and has
conned its own movements to
a small area for 60 seconds.
48 Astro 320 and DC40 Owner’s Manual
Customizing Your Device
◦ GPS Lost Alert—indicates that
the dog’s DC 40 has lost GPS
satellite signals.
◦ Lost Communication Alert—
indicates that the Astro is not
receiving signals from the
DC 40.

1. From the main menu, press DOG
twice.
2. Select a dog.
3. Select an option:
• Select Move Down and change
the order of the dog list.
• Select Remove to delete a dog
from the list.

From main menu, select Setup >
Display.
• Backlight Timeout—adjusts the
length of time before the backlight
turns off.
NOTE: To adjust the backlight
brightness, see page 10.
• Battery Save—saves battery power
and prolongs the battery life.
• Colors—sets the colors used on the
device screens.
• Screen Capture—allows you to
take screen captures on the device.

You can customize tones for messages,
keys, turn warnings, and alarms.
1. From the main menu, select Setup
> Tones.
2. Select a tone for each audible type.
Astro 320 and DC40 Owner’s Manual 49
Customizing Your Device

From the main menu, select Setup >
Map.
• Orientation
◦ North Up—shows north at the
top of the page.
◦ Track Up—shows your current
direction of travel toward the
top of the page.
• Guidance Text—allows you to
select when to show guidance text
on the map.
• Data Fields—page 69.
• Advanced Map Setup—sets the
zoom levels, the text size, and the
detail level of the map.
◦ Auto Zoom—automatically
selects the appropriate zoom
level for optimal use on your
map. When Off is selected, you
must zoom in or out manually.
◦ Zoom Levels—selects the zoom
level for map items.
◦ Text Size—selects the text size
for map items.
◦ Detail—selects the amount
of detail shown on the map.
Showing more detail may cause
the map to redraw more slowly.
◦ Shaded Relief—shows detail
relief on the map (if available)
or turns off shading.
• Map Information—allows you to
enable or disable the maps currently
loaded on the device. To purchase
additional maps, see page 67.
50 Astro 320 and DC40 Owner’s Manual
Customizing Your Device

From the main menu, select Setup >
Tracks.
• Track Log—turns track recording
on or off.
• Record Method—selects a track
recording method. Auto records the
tracks at a variable rate to create
an optimum representation of your
tracks.
• Recording Interval—selects a
track log recording rate. Recording
points more frequently creates a
moredetailed track, but lls the
track log faster.
• Auto Archive—selects an
automatic archive method to
organize your tracks. Tracks are
saved and cleared automatically
based on the user setting.
• Color—changes the color of the
track line on the map.


You can customize units of measure for
distance and speed, elevation, depth,
temperature, and pressure.
1. From the main menu, select Setup
> Units.
2. Select a measurement type.
3. Select a unit of measure for the
setting.

From the main menu, select Setup >
Time.
• Time Format—allows you to
select a 12-hour or a 24-hour
display time.
• Time Zone—allows you to select
the time zone for the device. You
can select Automatic to set the
time zone automatically based on
your GPS position.
Astro 320 and DC40 Owner’s Manual 51
Customizing Your Device

NOTE: Do not change the position
format or the map datum coordinate
system unless you are using a map or
chart that species a different position
format.
From the main menu, select Setup >
Position Format.
• Position Format—sets the position
format in which a given location
reading appears.
• Map Datum—sets the coordinate
system on which the map is
structured.
• Map Spheroid—shows the
coordinate system the device is
using. The default coordinate
system is WGS 84.

You can customize the compass
settings. You can specify the type of
heading display and the type of North
reference used to calculate a heading.
NOTE: Unless you have a good
understanding of headings and North
referencing, use the default values.
From the main menu, select Setup >
Heading.
• Display—sets the type of
directional heading on the compass.
• North Reference—sets the north
reference of the compass.
• Go To Line (Pointer)—allows you
to select how the course appears.
◦ Bearing (Small or Large)—the
direction to your destination.
◦ Course (CDI)—the course
deviation indicator displays
your relationship to a course
52 Astro 320 and DC40 Owner’s Manual
Customizing Your Device
line leading to a destination.
• Compass—switches from an
electronic compass to a GPS
compass when you are traveling
at a higher rate of speed for a set
period of time (Auto), or turns the
compass off.
• Calibrate Compass—page 36.

From the main menu, select Setup >
Altimeter.
• Auto Calibration—allows the
altimeter to self-calibrate each time
you turn the device on.
• Barometer Mode
◦ Variable Elevation—allows the
barometer to measure changes
in elevation while you are
moving.
◦ Fixed Elevation—assumes
the device is stationary at a
xed elevation. Therefore, the
barometric pressure should only
change due to weather.
NOTE: Use this feature when
you plan to remain stationary.
Trip data is not recorded when
Fixed Elevation is on.
• Pressure Trending
◦ Save When Power On—
records pressure data only when
the device is turned on. This
can be useful when you are
watching for pressure fronts.
◦ Save Always—records pressure
data every 15 minutes, even
when the device is turned off.
• Plot Type
◦ Elevation/Time—records
elevation changes over a period
of time.
Astro 320 and DC40 Owner’s Manual 53
Customizing Your Device
◦ Elevation/Distance—records
elevation changes over a
distance.
◦ Barometric Pressure—records
barometric pressure over a
period of time.
◦ Ambient Pressure—records
ambient pressure changes over a
period of time.
• Calibrate Altimeter—page 39.

From the main menu, select Setup >
Geocaches.
• Geocache List—allows you to
display the geocache list by names
or codes.
• Found Geocaches—allows you
to edit the number of geocaches
found. This number automatically
increases as you log a nd
(page 43).
• Filter Setup—page 43.
• chirp
™
Searching—page 44.
• Program chirp
™
—programs the
chirp accessory. See the chirp
Owner’s Manual at www.garmin
.com.

From the main menu, select Setup >
Routing.
• Guidance Method—allows you
to select a guidance method for
calculating your route.
◦ Off Road—calculates point-to-
point routes.
◦ On Road For Time (requires
routable maps)—calculates
onroad routes that require
minimal time to drive.
54 Astro 320 and DC40 Owner’s Manual
Customizing Your Device
◦ On Road For Distance
(requires routable maps)—
calculates on-road routes that
are shorter in distance.
◦ Prompted—asks you to select a
routing method before the route
is calculated.
• Follow Road Method—allows you
to select a transportation method in
order to optimize your route.
• Lock On Road—locks the
position icon, which represents
your position on the map, onto the
nearest road.
• Off Road Transitions—available
only for some activities.
◦ Auto—automatically routes you
to the next point.
◦ Manual—allows you to select
the next point on the route.
◦ Distance—routes you to the
next point on the route when
you are within a specied
distance of your current point.
• Avoidance Setup—(available only
for some activities) allows you to
select the road type you want to
avoid.

From the main menu, select Setup >
Marine.
• Marine Chart Mode—allows you
to select a nautical chart or a shing
chart:
◦ Nautical—displays various map
features in different colors so
that the marine POIs are more
readable. The nautical chart
reects the drawing scheme of
paper charts.
Astro 320 and DC40 Owner’s Manual 55
Customizing Your Device
◦ Fishing—(requires marine
maps) displays a detailed view
of bottom contours and depth
soundings. Simplies map
presentation for optimal use
while shing.
• Appearance—allows you to set the
appearance of marine navigation
aids on the map.
• Marine Alarm Setup
◦ Anchor Drag Alarm—alarm
sounds when you exceed a
specied drift distance while
anchored.
◦ Off Course Alarm—alarm
sounds when you are off course
by a specied distance.
◦ Deep Water/Shallow Water—
alarm sounds when you enter
water of a specic depth.

1. From the main menu, select Setup
> Marine > Marine Alarm Setup.
2. Select an alarm type.
3. Select On.
4. Enter a distance.

For more information on optional
tness accessories, see page 66.
56 Astro 320 and DC40 Owner’s Manual
Device Information



You can view the unit ID, software
version, and license agreement.
From the main menu, select Setup
> About.

notice
Avoid chemical cleaners and solvents
that can damage plastic components.

1. Use a cloth dampened with a mild
detergent solution.
2. Wipe it dry.

1. Use a soft, clean, lint-free cloth.
2. If necessary, use water, isopropyl
alcohol, or eyeglass lens cleaner.
3. Apply the liquid to the cloth, and
gently wipe the screen with the
cloth.

notice
The Astro and DC 40 are water
resistant to IEC 60529 IPX7. They
can withstand immersion in 1 meter
of water for 30 minutes. Prolonged
submersion can cause damage to the
devices. After immersion, be certain
to wipe and air dry the devices before
using or charging.

notice
Do not store the Astro or DC 40 where
prolonged exposure to temperature
extremes may occur, because
permanent damage may result.
Astro 320 and DC40 Owner’s Manual 57
Device Information


Water
resistance
Water resistant to
IEC 60529 IPX7
Battery type Two 1.5 volt AA
batteries (alkaline,
NiMH, or lithium)
Alkaline
battery life
Up to 15 hours,
typical usage
NiMH or
lithium
battery life
Up to 20 hours,
typical usage
Operating
temperature
range
From -4°F to 158°F
(from -20°C to 70°C)
See battery
information on
page 58.
Computer
interface
USB 2.0 full speed
Wireless
range
12 inches (30.5 cm)
or closer

Water
resistance
Water resistant to
IEC 60529 IPX7
Battery type Internal
rechargeable
lithium-ion battery
Battery life From 17 to 48 hours.
Recharging takes
approximately 4½
hours.
Operating
temperature
range
From -4°F to 140°F
(from -20°C to 60°C)
Charging
temperature
range
From 32°F to 113°F
(from 0°C to 45°C)
58 Astro 320 and DC40 Owner’s Manual
Device Information


See the Important Safety and Product
Information guide in the product
box for product warnings and other
important information.

The temperature rating for the device
may exceed the usable range of some
batteries. Alkaline batteries can rupture
at high temperatures. Alkaline batteries
lose a signicant amount of their
capacity as temperature decreases. Use
lithium batteries when operating the
device in below-freezing conditions.

See page 5.

1. From the main menu, select Setup
> System > Battery Type.
2. Select Alkaline, Lithium, or
Rechargeable NiMH.

When you do not plan to use the
Astro for several months, remove the
batteries. Stored data is not lost when
batteries are removed.

The normal long-term decrease in
the charging capacity of lithium-
ion batteries can be accelerated by
exposure to elevated temperatures.
Storing a fully charged battery for
more than three months in a location
that exposes it to high temperatures
(above 70°F or 21°C) can signicantly
reduce its recharging capacity.
• Before storage, charge the
battery to approximately 50% of
Astro 320 and DC40 Owner’s Manual 59
Device Information
capacity and store it in a cool, dry
location where temperatures are
not expected to exceed typical
household levels.
• Do not store a fully depleted battery
because it may not recharge after an
extended period of storage.
• After storage, fully charge the
battery again before using the
DC 40.



From the main menu, select Setup
> System > Display > Battery
Save.

Extensive use of screen backlighting
can signicantly reduce battery life.
You can adjust the backlight brightness
and decrease the backlight timeout to
maximize battery power.
1. Quickly press
.
2. Adjust the brightness.

From the main menu, select Setup
> System > Display > Backlight
Timeout.


This requires wireless communication
with the DC 40. You must turn on the
DC 40 and bring it within range of the
Astro.
1. From the main menu, press DOG >
ENTER > MENU.
2. Select Comm. Settings.
3. If necessary, select a unit ID.
4. Change the update rate.
Both 30-second and two-minute
rates reduce battery drain, but they
create a less-detailed dog track and
collected statistics.
60 Astro 320 and DC40 Owner’s Manual
Device Information
5. Bring the Astro within a few feet of
the DC 40.
6. Follow the on-screen instructions.

NOTE: The device is not compatible
with Windows
®
95, 98, Me, or NT. It is
also not compatible with Mac
®
OS 10.3
and earlier.

The device supports the following le
types:
• Files from BaseCamp
™
. Go to
www.garmin.com.
• GPI custom POI les from the
Garmin POI Loader. Go to www
.garmin.com/products/poiloader.
• JPEG photo les
• GPX geocache les

You can purchase microSD memory
cards from an electronics supplier, or
purchase preloaded map data cards
from your Garmin dealer. In addition
to map and data storage, the memory
cards can be used to store les such as
images, cartridges, geocaches, routes,
waypoints, and custom POIs.
1. Remove the battery cover by
turning the D-ring 1/4 turn
counterclockwise and pulling up.
2. Remove the batteries.
3. Slide up and pull out the metal
cover.
4. Align the metal contacts, and place
the card in the slot.
Astro 320 and DC40 Owner’s Manual 61
Device Information
5. Push in and slide down the metal
cover.
6. Replace the batteries and the
battery cover.

1. Slide up and pull out the metal
cover.
2. Remove the card from the slot.
3. Push in and slide down the metal
cover.

notice
To prevent corrosion, thoroughly
dry the mini-USB port, the weather
cap, and the surrounding area before
charging or connecting to a computer.
1. Connect the USB cable to a USB
port on your computer.
2. Pull up the weather cap from the
mini-USB port.
3. Plug the small end of the USB
cable into the mini-USB port.
Your device and memory card
(optional) appear as removable
drives in My Computer on
Windows computers and as
mounted volumes on Mac
computers.
62 Astro 320 and DC40 Owner’s Manual
Device Information

Before you can transfer les, you must
connect the device to your computer
(page 61). To transfer map data to a
memory card, you may need to load
USB drivers from www.garmin.com.
1. Browse your computer for the le.
2. Select the le.
3. Select Edit > Copy.
4. Open the “Garmin” or memory card
drive or volume.
TIP: You must put photo les in the
Garmin\JPEG folder. You must put
geocache les in the Garmin\GPX
folder.
5. Select Edit > Paste.

The dog tracks saved on your Astro
are detailed enough for most users to
view the movements of their dog. The
DC 40 stores more-detailed tracks of
the dog’s movements. You can use the
Astro to transfer these tracks to the
BaseCamp software (www.garmin
.com) on your computer.
1. Turn on the Astro.
2. Turn on the DC 40, and place it
within 12 inches of the Astro.
3. From the main menu, press DOG
twice.
4. Select a dog.
5. Select Show Info.
6. Press MENU.
7. Select Download Track.
The detailed track is saved to the
device mass storage in the Garmin\
GPX folder. The le name is
dog_detailed.gpx.
Astro 320 and DC40 Owner’s Manual 63
Device Information
8. Open BaseCamp.
9. Connect the Astro to a computer
using the USB cable provided
(page 61).
10. Follow the BaseCamp instructions
for transferring les.

notice
Your device memory contains
important system les and folders that
should not be deleted.
Before you can delete les, you must
connect the device to your computer
(page 61).
1. Open the “Garmin” drive or
volume.
2. If necessary, open a folder or
volume.
3. Select the les.
4. Press the Delete key on your
keyboard.

1. Complete an action:
• For Windows computers, click
the eject icon in your
system tray.
• For Mac computers, drag the
volume icon to the Trash .
2. Disconnect the device from your
computer.

Before you can update the device
software, you must connect the Astro
to your computer (page 61).
NOTE: Updating the software does not
erase any of your data or settings.
1. Go to www.garmin.com
/webupdater.
2. Follow the on-screen instructions.
64 Astro 320 and DC40 Owner’s Manual
Device Information
3. Check for DC 40 software updates.
The DC 40 software is stored on
your Astro until you are ready to
load it wirelessly.

Before you can load the software to the
DC 40, you must get the software from
WebUpdater.
1. Turn on the DC 40, and bring it
within range of the Astro.
NOTE: To avoid data corruption,
do not turn off the Astro or the
DC 40 during data transfer.
2. From the main menu, press DOG
twice.
3. Select a dog.
4. Select Show Info.
5. Press MENU.
6. Select Upgrade Dog Unit.
7. Follow the on-screen instructions.
The DC 40 software is saved on the
Astro, so you can update additional
DC 40 devices in the eld.
Astro 320 and DC40 Owner’s Manual 65
Appendix



• 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.

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.

Go to http://my.garmin.com to
access the latest services for your
Garmin products.
• Subscribe to online services for
Points of Interest (POIs) and
other useful items.
• Unlock optional maps.
• Download geocaches to your
device.

Go to http://buy.garmin.com,
or contact your Garmin dealer
for information about optional
accessories, preloaded map data
cards, accessories, and replacement
parts.
66 Astro 320 and DC40 Owner’s Manual
Appendix

Before you can use the tness
accessory with your device, you
must install the accessory according
to the instructions included with the
accessory.
You can use optional tness accessories
including a heart rate monitor or a
cadence sensor with your device.
These accessories use ANT+
™
wireless
technology to send data to the device.


1. Bring the device within range (3 m)
of the ANT+ accessory.
2. From the main menu, select Setup
> Fitness.
3. Select an option:
• Select Heart Rate Monitor >
On.
• Select Bike Cadence Sensor
> On.
4. Wait until the device displays
“Connected.”
5. Customize your data elds to view
the heart rate or cadence data
(page 69).


• Verify that the ANT+ accessory
is compatible with your Garmin
device.
• Before you pair the ANT+
accessory with your Garmin device,
move 10 m (32.9 feet) away from
other ANT+ accessories.
• Bring the Garmin device within
range 3 m (10 feet) of the ANT+
accessory.
• After you pair the rst time, your
Garmin device automatically
recognizes the ANT+ accessory
each time it is activated. This
process occurs automatically when
you turn on the Garmin device and
Astro 320 and DC40 Owner’s Manual 67
Appendix
only takes a few seconds when
the accessories are activated and
functioning correctly.
• When paired, your Garmin device
receives data from only your
accessory, and you can go near
other accessories.

You can purchase additional maps,
such as BirdsEye
™
satellite imagery,
Garmin custom maps, Inland lakes,
Topo, BlueChart
®
g2 and City
Navigator maps. Go to www.garmin
.com/us/maps/.


You must provide your own Phillips
screwdriver to replace the DC 40
collar.
1. Carefully cut the zip tie that secures
the VHF antenna to the collar.
2. Remove the two screws on the back
plate of the DC 40.
3. Lift off the mounting plate.
4. Remove the old collar.
5. Align the new collar with the
DC 40.
The buckle should be on the side
opposite of the power button.
6. Replace the mounting plate and
screws.
7. Replace the zip tie that secures the
VHF antenna to the collar.
Trim the zip tie and any sharp
edges.
68 Astro 320 and DC40 Owner’s Manual
Appendix


Before you can replace the VHF
antenna, you must detach the DC 40
from the collar (page 67).
1. Remove the weather cap and screw
from the VHF antenna.
2. Remove the old VHF antenna.
3. Align the new VHF antenna with
the DC 40.
4. Replace the screw and the weather
cap.
5. Replace the mounting plate and
screws.
6. Replace the zip tie that secures the
VHF antenna to the collar.
Trim the zip tie and any sharp
edges.


notice
When replacing the fuse, do not lose
any of the small pieces and make
sure they are put back in the proper
position. The vehicle power cable
does not work unless it is assembled
correctly.
If your device does not charge in your
vehicle, you may need to replace the
fuse located at the tip of the vehicle
adapter.
1. Use a coin to push down the
silver tip, and turn the coin
counterclockwise, one-quarter turn.
2. Remove the end piece, the silver
tip, and the fuse.
3. Install a 1 A fast blow fuse of the
same size.
4. Replace the silver tip and the end
piece.
Astro 320 and DC40 Owner’s Manual 69
Appendix

 
Accuracy of
GPS
The margin of
error for your
exact location. For
example, your GPS
location is accurate
to within +/- 12 feet.
Ambient
Pressure
The uncalibrated
environmental
pressure.
Ascent -
Average
The average vertical
distance of ascent.
Ascent -
Maximum
The maximum ascent
rate in feet/meters
per minute.
Ascent - Total The total elevation
distance ascended.
Battery Level The remaining
battery power.
Barometer The calibrated
current pressure.
 
Bearing The direction from
your current location
to a destination.
Cadence
(cadence
accessory
required)
Revolutions of the
crank arm or strides
per minute.
Course The direction from
your starting location
to a destination.
Descent -
Average
The average vertical
distance of descent.
Descent -
Maximum
The maximum
descent rate in feet/
meters per minute.
Descent - Total The total elevation
distance descended.
Distance to
Dest.
The distance to your
nal destination.
Distance to
Next
The remaining
distance to the next
point on the route.
70 Astro 320 and DC40 Owner’s Manual
Appendix
 
Elevation The altitude of your
current location
above or below sea
level.
Elevation -
Maximum
The highest elevation
reached.
Elevation -
Minimum
The lowest elevation
reached.
ETA at
Destination
The estimated time
of day you will reach
your nal destination.
ETA at Next The estimated time
of day you will reach
the next point on the
route.
Glide Ratio The ratio of
horizontal distance
traveled to the
change in vertical
distance.
 
Glide Ratio to
Dest.
The glide ratio
required to descend
from your current
position and
elevation to the
destination elevation.
GPS Signal
Strength
The strength of the
GPS signal.
Heading The direction you are
moving.
Heart Rate
(heart rate
monitor
required)
Your heart rate in
beats per minute
(bpm).
Location (lat/
lon)
Displays the current
position in the default
position format
regardless of the
selected settings.
Location
(selected)
Displays the current
position in the
selected position
format.
Astro 320 and DC40 Owner’s Manual 71
Appendix
 
Odometer A running tally of
distance traveled for
all trips.
Off Course The distance to
the left or the right
by which you have
strayed from the
original path of travel.
Pointer The data eld arrow
points in the direction
of the next point or
turn.
Speed The current rate of
speed at which you
are moving since last
reset.
Speed -
Maximum
The maximum speed
reached since last
reset.
Speed - Moving
Avg.
The average speed
of the device while
moving since last
reset.
 
Speed - Overall
Avg.
Your average speed
since last reset.
Sunrise The time of sunrise
based on your GPS
position.
Sunset The time of sunset
based on your GPS
position.
Time of Day The current time of
day based on your
time settings (format,
time zone, and
daylight saving time).
Time to
Destination
The estimated time
needed to reach your
nal destination.
Time to Next The estimated time
needed until you
reach the next point
on the route.
To Course The direction in
which you must move
to return to the route.
72 Astro 320 and DC40 Owner’s Manual
Appendix
 
Trip Odometer A running tally of the
distance traveled
since the last reset.
Trip Time -
Moving
A running tally of time
since the last reset.
Trip Time -
Stopped
The time spent not
moving since the last
reset.
Trip Time -
Total
A running tally of
distance traveled
since the last reset.
Turn The angle of
difference (in
degrees) between
the bearing to your
destination and your
current course. L
means turn left. R
means turn right.
Velocity Made
Good
The speed at which
you are closing on a
destination along a
route.
 
Vertical Speed Your rate of altitude
gain or loss over
time.
Vert. Speed to
Dest.
The measurement
of your rate of
ascent or descent
to a predetermined
altitude.
Waypoint at
Dest.
The last point on
a route to your
destination.
Waypoint at
Next
The next point on
your route.
Astro 320 and DC40 Owner’s Manual 73
Appendix

 
The device does not
respond. How do I reset
the device?
1. Remove the batteries.
2. Reinstall the batteries.
: This does not erase any of your data or
settings.
I want to reset all the
customized settings back
to the factory defaults.
From the main menu, select  >  > 
.
My device does not
acquire satellite signals.
1. Take your device out of buildings and parking
garages, and away from tall buildings and trees.
2. Turn on the device.
3. Remain stationary for several minutes.
The batteries do not last
long.
To learn how to maximize the battery life, see page 59.
How do I know my device
is in USB mass storage
mode?
On the device, the Garmin logo and
USB symbol
appear.
On your computer, you should see a new removable
disk drive in My Computer on Windows computers and
a mounted volume on Mac computers.
74 Astro 320 and DC40 Owner’s Manual
Appendix
My device is connected
to the computer, but it will
not go into mass storage
mode.
You may have loaded a corrupted le.
1. Disconnect the device from your computer.
2. Turn off the device.
3. Hold
while you connect the device to your
computer.
4. Continue holding
for 30 seconds or until the
device goes into mass storage mode.
I cannot see any new
removable drives in my
list of drives.
If you have several network drives mapped on your
computer, Windows may have trouble assigning drive
letters to your Garmin drives. See the Help le for your
operating system to learn how to assign drive letters.
I need replacement parts
or accessories.
Go to http://buy.garmin.com, or contact your Garmin
dealer.
I want to buy an external
GPS antenna.
Go to http://buy.garmin.com, or contact your Garmin
dealer.
Astro 320 and DC40 Owner’s Manual 75
Index

accessories 65
adding a dog 17
addresses 33
alarms
clock 42
marine 54
proximity 39
tones 48
alerts
dog 47
vibration 47
almanacs 41
altimeter
calibrating 39
navigating 38
settings 52, 56
averaging your location 23
backlight 10, 48, 59
barometer 52, 69
batteries
installing 5
life 11, 57
replacing 58
storage 58
type 47, 57, 58
battery save option 59
bearing pointer 34
BirdsEye satellite imagery
67
BlueChart g2 maps 67
calculator 41
calendar 41
calibrating
altimeter 39, 52
compass 36
caring for the devices 56
chirp 44, 53
City Navigator 33
cleaning the device 56
Collar Lock 18
compass
calibrating 36
navigating 34
settings 51
computer 61
course pointer 35
covey, marking 21
customizing your device
31, 37, 45, 46
dashboards 46
data elds 45, 69–73
DC 40
replacing 67
update rate 59
updating software 64
Digital Elevation Models
(DEM) 27
display settings 48
dog
adding 17
alerts 47
Dog Tracker page 14
information 13, 15
pointer 14
settings 47, 48
76 Astro 320 and DC40 Owner’s Manual
Index
signal conict 17–18
statistics 19
status icons 14
tracks, transferring 62
type 15
elevation
data elds 70
plot 26, 38
le types 60
nding
addresses 33
cities 32
coordinates 33
geocaches 43
near your location 22
photos 32
points of interest 33
routes 32
tracks 32
waypoints 22, 32
tness accessories 66
xed elevation 52
Garmin Product Support
65
geocaches 42
settings 53
sharing 29
GPS
settings 47
signals 11, 40, 69
heading settings 51
keyboard 12
keypad 9
language 47
line-of-sight radio
communication 20
main menu 45
map datum 51
maps
BirdsEye satellite
imagery 67
City Navigator 33, 67
customizing 49
data elds 31
measuring distance 31
optional 33, 67
orientation 30, 49
scaling 30
topographical 27, 67
marine
alarms setup 54
setup 54
measuring distance 31
memory card 60
microSD card 60
myGarmin 65
naming
locations 21
waypoints 22
navigating
altimeter 38
compass 34
course pointer 35
Astro 320 and DC40 Owner’s Manual 77
Index
Sight ‘N Go 36
stopping 32
to a destination 32
waypoints 21
odometer 71
PIN 18
POI Loader 60
points of interest 33
position format 51
power key 8, 9
product support 65
proles 45
proximity alarms 39
radio signals 20
recent nds 32
replacement parts 67
routes 24
editing 24
settings 53
satellite page 40
satellite signals 11, 13,
18, 69
Sight ‘N Go 36
software version 56
specications 57
stopwatch 42
storage 56, 58
system settings 47
time settings 50
data elds 71
sunrise and sunset 71
tones 47, 48
topographical maps 27, 67
TracBack 28
tracking a dog 16
tracks 25
settings 50
transferring dog tracks
62
trip computer 37
troubleshooting
dog signals 17–18
unit ID 56
units of measure 50
updating software
Astro 220 63
VHF antenna 7, 8, 9, 68
vibration alerts 47
waypoints 21
deleting 23
editing 22
navigating 21
projecting 24
WebUpdater 63–64
zooming
altimeter 39
dog location 47
map 49


© 2011 Garmin Ltd. or its subsidiaries
Garmin International, Inc.
1200 East 151
st
Street, Olathe, Kansas 66062, USA
Garmin (Europe) Ltd.
Liberty House, Hounsdown Business Park, Southampton, Hampshire, SO40 9LR UK
Garmin Corporation
No. 68, Zhangshu 2
nd
Road, Xizhi Dist., New Taipei City, 221, Taiwan (R.O.C.)
www.garmin.com
June 2011 190-01340-00 Rev. A Printed in Taiwan
… 9 …

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