Garmin 640 Guida Utente

Appendix

My computer 

never detects the 

GPSMAP 640 when I 

connect it.

1.  Unplug the USB cable from your computer. 

2.  Turn off the GPSMAP 640. 

3.  Plug the USB cable into a USB port on your 

computer and into your GPSMAP 640. The 

GPSMAP 640 automatically turns on and 

goes into USB mass storage mode. Ensure 

your GPSMAP 640 is connected to a USB 

port and not a USB hub. 

I cannot see any new 

removable drives in 

my list of drives.

If you have several network drives mapped 

on your computer, Windows can have trouble 

assigning drive letters to your GPSMAP 640 

drives. See your operating system Help file to 

learn how to map or assign drive letters. 

How can I find 

restaurants near the 

hotel I will be staying 

at in the future?

1.  Touch 

 > 

> 

.

2.  Find the hotel, and touch 

.

3.  Touch 

> 

 > 

> 

.

4.  Search for a restaurant. Restaurants 

nearest your hotel are listed first.

aiS: Dangerous target—an AIS target currently presents a 

collision threat.
alarm Clock—the alarm clock alarm has sounded.
anchor Drag alarm—the boat has drifted out of the user-set 

distance range.
antenna input is Shorted —there is a short in the wiring to the 

internal or external antenna.
approaching Waypoint <name>—the boat is a specified alarm 

distance from the destination waypoint.
arrival alarm <name>—arriving at destination waypoint.
auto-guidance unable to calculate route—(BlueChart g2 Vision) 

auto-guidance cannot calculate the route. Ensure that both your 

current position and the end point are contained in the BlueChart 

g2 Vision region contained on the inserted SD card.
auto-guidance unable to calculate route. ending position not 

within safe depth—(BlueChart g2 Vision) auto-guidance cannot 

calculate the route; choose an end point within the specified safe 

depth.