User manual GARMIN GPSMAP 640

[. . . ] GPSMAP® 640 owner's manual © 2008 Garmin Ltd. or its subsidiaries Garmin International, Inc. 1200 East 151st Street, Olathe, Kansas 66062, USA Tel. (913) 397. 8200 or (800) 800. 1020 Fax (913) 397. 8282 Garmin (Europe) Ltd. [. . . ] The time setting sounds the alarm when you are a specified time from the point. · Change Distance/Change time--specify the distance or time from the point at which the alarm will sound. anchor Drag--set an alarm to sound when you drift a specified distance from your current location. off Course--set an alarm to sound when you steer a specified distance from your current course. 6 Setting System Alarms From the Home screen, touch Configure > alarms > System. Clock--set an alarm using the system (GPS) clock. The unit must be on for the clock alarm to work. gpS accuracy--set an alarm to sound when the GPS location accuracy falls outside the specified value. Setting Sonar Alarms From the Home screen, touch Configure > alarms > Sonar. Note: You must connect an optional sonar module and a transducer using NMEA 0183 to receive sonar information. Shallow Water/Deep Water--set an alarm to sound when the depth is less than or greater than the specified value. Water temp--set an alarm to sound when the transducer reports a temperature that is 2°F (1. 1°C) above or below the specified temperature. Setting Weather Alarms Note: You must have a subscription to XM WXTM Weather and a GXM 40 antenna connected to view weather information. See page 45 for more information. From the Home screen, touch Configure > alarms > Weather. GPSMAP 640 Owner's Manual Marine Mode: Advanced Configuration Turn the following alarms on or off: · · · · · Marine Tornado Severe Storm Flood Flash Flood Configuring My Boat To adjust the Keel Offset: 1. From the Home screen, touch Configure > My Boat > Keel Offset. Use the on-screen keyboard to specify the offset. · If you are measuring down to the keel (Intelliducer installed at the water line), enter a (+) positive number. · If you are measuring up to the water line (Intelliducer installed on the keel), enter a (-) negative number. Touch Done to accept the number. From the Home screen, touch Configure > My Boat. auto guidance--select the Auto Guidance parameters for your boat. · Safe Depth--set the minimum depth (using chart depth datum) to allow when calculating an auto-guidance path. A safe depth of less than one meter is not allowed when using Auto Guidance. · Safe Height--set the minimum height (using chart height datum) of a bridge that your boat can safely travel under. Keel offset--offset the surface reading for the depth of a keel, making it possible to measure depth from the bottom of the keel instead of from the transducer location. Enter a positive number to offset for a keel. Enter a negative number to compensate for a large vessel that may draw several feet of water. GPSMAP 640 Owner's Manual turn transition Distance--set how far before a turn in a route that you transition to the next leg. Configuring Other Vessels From the Home screen, touch Configure > other Vessels. Note: To configure AIS or DSC information for other boats, your unit must be connected to an external AIS or DSC device. aiS--turn AIS on or off. AIS alerts you to area traffic by providing boat IDs, position, course, and speed for boats that are within range and equipped with a transponder. [. . . ] track Log Full--there is no longer any space in the active track log storage. track Memory is Full, Can't Create track--the saved track memory is full. track truncated--some points on the end of the track have been discarded. transducer Disconnected, Sonar turned off--the transducer has been disconnected. [. . . ]