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What is the PIN Code?
When connecting to a Bluetooth adapter, you may be asked to type a PIN code. If you are asked to enter the PIN code,
type four zeros (0000).
The LEDs Do Not Turn On
If the LEDs do not turn on, ensure the battery is fully charged. If the LEDs still will not turn on, make sure the battery is
not inserted upside down. The contacts on the battery should line up with the contacts on the device.
The Battery Will Not Hold a Charge
The Li-ion battery is designed to last for 300-500 uses (depending on environmental conditions). Please visit www.
delorme.com to purchase a replacement.
How Do I Know Which COM Port to Use?
Use the Bluetooth manager software that came with your Bluetooth-enabled PDA/laptop or Bluetooth adapter to check
which COM port is associated with the Earthmate GPS BT-20 device. If the Bluetooth Manager does not display the COM
port, use the steps below to determine the correct port to use in the mapping application.
Note: Bluetooth-enabled Palm OS devices do not display a COM port number. DeLorme handheld application users can
select Bluetooth from the Port drop-down list.
Windows Vista:
1. From the Start menu, click Computer, click System Properties, and then click Device Manager.
2. Click the plus sign next to Ports (COM & LPT). The port number is listed next to the Bluetooth Communications Port.
Windows XP and Windows 2000:
1. From the Start menu:
Windows XP users: Click Control Panel.
Windows 2000 users: Click Settings and then click Control Panel.
2. Double-click the System icon.
3. Click Hardware.
4. Click Device Manager.
5. Click the plus sign next to Ports (COM & LPT). The port number is listed next to the Bluetooth Communications Port.
Windows Mobile/Pocket PC Devices:
You can find the COM port in your Bluetooth Settings. Refer to your Bluetooth help manual for information about
Bluetooth Settings.
d. Wirelessly connect to the GPS device. If you experience difficulty connecting to the GPS device, turn the device
off, turn it back on, and then try connecting to the device again.
5. Perform GPS tracking according to the protocol of the mapping application.
Charging the Battery
The Earthmate GPS BT-20 comes equipped with a rechargeable, Lithium-Ion battery. The battery charges when the
device is connected via USB or the vehicle power point adapter.
Troubleshooting
First Things to Check:
• Does the Earthmate GPS BT-20 have a clear view of the sky? Buildings, mountains, and heavy foliage may
block your satellite reception.
• IsyourmappingsoftwarerunningproperlywithouttheEarthmate GPS BT-20?
• Haveyoutrieddisconnectingandthenreconnectingthedevice?
Why Won’t the Device Acquire or Maintain a 3-D fix?
If the device cannot acquire or maintain a 3-D fix, it may be because the device’s view of satellites is obstructed. Try
repositioning the device to another location, such as in the middle or corner of the dashboard. You can check the signal
strength at various locations in your vehicle using the steps below.
1. Open your DeLorme mapping application.
2. Click the GPS tab.
3. Click Start GPS (if the device has not already been started).
4. Click the Status subtab.
5. Under Satellite Listing, examine the values listed in the dB (decibel) column. To acquire a 3-D fix, at least one of
the values should be greater than 40, some of the values might be in the 30s, and a few might be in the 20s. If
your device is not receiving such values in its current position, move the device to another location, such as
another place on the dashboard, until it reaches those values.
Note: If you cannot obtain a 3-D fix anywhere on your dashboard but can obtain a 3-D fix outside of your vehicle, it may
be because you have a heated/metallic-coated windshield that interferes with satellite signal. Heated/metallic-coated
windshields are common in luxury vehicles. Try placing the Earthmate GPS BT-20 behind the rear-view mirror or in the
rear windshield of your vehicle.
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