250 Quick Ref 7/14/98 9:14 AM ACTV Page 1 STBY GNC 250 CLR CRSR SQ NRST RTE WPT NAV MSG ENT GNC 250 Pilot’s Quick Reference Guide ®
50 Quick Ref 7/14/98 9:14 AM Page 2
250 Quick Ref 7/14/98 9:14 AM Page 3 Comm Window } { GPS Window CURSOR CONTROL C The cursor key is used to activate and deactivate the cursor in the comm and GPS windows, and is used to highlight fields for data entry, changing display data or cycling through available options. Pressing C once activates the cursor in the comm window, and is indicated by a < > around the standby frequency (see above). Pressing C again moves the cursor to the GPS window and is indicated by a flashing field.
7/14/98 9:14 AM Page 4 ACTV CURSOR/DATA ENTRY 250 Quick Ref STBY GNC 250 CLR ENT CRSR SQ NRST RTE WPT NAV MSG DATA ENTRY O The outer knob is used to advance through pages, select comm frequency (MHz), advance the cursor or move through data fields. K The inner knob is used to change data, select comm frequency (KHz), or scroll through additional information that cannot fit on the screen. \ E The clear key is used to erase information or cancel an entry.
250 Quick Ref 7/14/98 9:14 AM Page 5 POWER UP ❏ ❏ ❏ ❏ Rotate the power/volume knob B clockwise to turn the unit on and adjust volume. The welcome page will appear while the unit performs a self test. Press E to confirm the database prompt. Satellite acquisition will begin and the unit will display a ‘Ready for Navigation’ message once a position fix has been calculated. To view messages, press the M key.
7/14/98 9:14 AM Page 6 TO SELECT A DIRECT-TO DESTINATION: ❏ ❏ FLYING START 250 Quick Ref ❏ ❏ ❏ ❏ Press D. Rotate K to select the first character of the destination waypoint’s identifier. Remember to use the ICAO identifier if you are entering an airport as your destination (i.e., KOSH for Wittman Regional Airport). Rotate O one stop to the right to advance the cursor to the next character position, and use K to select the next character of the identifier.
250 Quick Ref 7/14/98 9:14 AM Page 7 TO SELECT COMM FREQUENCIES: Press C repeatedly to highlight the standby field (e.g., “<121.75>”). ❏ Rotate O to select the desired megahertz (to the left of the decimal). ❏ Rotate K to select the desired kilohertz (to the right of the decimal). ❏ Press C twice to remove the cursor from the comm and GPS windows. TO EXCHANGE ACTIVE AND STANDBY FREQUENCIES: ❏ Press the @ button. TO ADJUST THE AUDIO VOLUME: ❏ Rotate the B power/volume knob.
7/14/98 9:14 AM Page 8 TO AUTO-TUNE A FREQUENCY DISPLAYED IN THE GPS DATABASE: ❏ COMMUNICATION 250 Quick Ref Press E with the cursor off to select the frequency as the standby frequency. TO AUTO-TUNE A FREQUENCY FROM A LIST IN THE GPS DATABASE: ❏ Press C twice to activate the cursor in the GPS window. Rotate O to highlight the desired frequency. ❏ Press E to place the frequency in the standby field. ❏ TO AUTOMATICALLY TUNE FOR EMERGENCY TRANSMISSION: ❏ Press and hold the @ key for > 2 seconds.
250 Quick Ref 7/14/98 9:14 AM Page 9 Airport Identification Airport Position Proximity Waypoint Page Airport Comments Airport Communications User Waypoints Page Airport Runway Each waypoint category features a set of waypoint pages accessible by rotating the outer knob with the cursor inactive. Waypoint Comments Page The WPT key is used to view position, runway, frequency and other information on airports, VORs, NDBs, inter- sections and user waypoints.
7/14/98 9:14 AM Page 10 TO ACCESS APT INFORMATION: WAYPOINT & AIRPORT INFO 250 Quick Ref ❏ Press the W key. ❏ Press C twice to activate the cursor. ❏ TO SELECT AN APT BY FACILITY NAME OR CITY: Press E to confirm the ‘apt?’ category. The airport identification page will appear with the identifier field ready for entry.
250 Quick Ref 7/14/98 9:14 AM Page 11 TO SELECT A DIRECT-TO DESTINATION: ❏ Press the D key. ❏ Enter the identifier of the destination waypoint. ❏ Press E to accept the identifier, and E again to accept the direct-to confirmation page. ❏ Press D, followed by E twice. TO SELECT A DIRECT-TO FROM ANY PAGE THAT DISPLAYS A SINGLE WAYPOINT IDENTIFIER: ❏ Press D, followed by E. TO CANCEL A DIRECT-TO: ❏ Press the D key. ❏ Press the \ key, followed by E.
7/14/98 9:14 AM Page 12 USING THE DIRECT-TO CONFIRMATION PAGE DIRECT-TO 250 Quick Ref The GNC 250’s direct-to confirmation page may also be used to select a destination waypoint, review a waypoint’s position, facility name or location, and manually set a course to/from the destination. TO SELECT A DIRECT-TO DESTINATION: ❏ Highlight the identifier field and enter the identifier using K and O. Press E when finished.
250 Quick Ref 7/14/98 9:14 AM Page 13 WAYPOINT SEQUENCING AND HOLD MODE The GNC 250’s waypoint sequencing field allows you to ‘hold’ on a selected waypoint and prevent the GPS from sequencing to the next route waypoint. You may also use the hold mode with the course select feature to maintain a user-defined course to the hold waypoint. ❏ Set the waypoint sequencing field to the ‘hold’ setting by highlighting the waypoint sequencing field and rotating K one stop in either direction.
7/14/98 9:14 AM Page 14 USING THE COURSE SELECT FUNCTION DIRECT-TO 250 Quick Ref Once the waypoint sequencing field is set to the ‘hold’ position, the selected course will appear at the bottom left corner of the CDI page. TO ENTER A NEW COURSE FROM THE CDI PAGE: ❏ Press C twice to activate the cursor in the GPS window. ❏ Rotate O to highlight the course select field. ❏ Use K and O to enter the desired course. ❏ Press E to confirm, and C to remove the cursor.
250 Quick Ref 7/14/98 9:14 AM Page 15 CDI Page NAVCOM Page NAV Menu 1 Position Page Satellite Status Page The NAV key is used to view navigation, position and status information and provides access to various planning and calculation functions. To scroll through the navigation pages, press NAV and rotate the outer knob; or press the NAV key repeatedly.
7/14/98 9:14 AM Page 16 ❏ ❏ ❏ Provides a graphical CDI and displays your speed and track over the ground, and the distance and ETE to your destination. The four data fields may be changed to display different data by placing the flashing cursor over the desired field and rotating the inner knob. When the GNC 250’s waypoint sequencing mode is set to ‘hold’, the desired course may be entered in the course select field.
250 Quick Ref 7/14/98 9:14 AM Page 17 Nearest Airport Page SUA Alert Page Nearest User Waypoints Page Nearest VOR Page Nearest Intersections Page The NRST key is used to obtain information on the nine nearest airports, VORs, NDBs, intersections, user waypoints and two near- Nearest NDB Page est FSSs; and provides access to SUA alert information. To scroll through the nearest pages, press NRST and rotate the outer knob.
7/14/98 9:14 AM Page 18 NEAREST WAYPOINT INFORMATION SPECIAL USE AIRSPACE ALERTS TO VIEW NEAREST APT INFORMATION: ❏ NEAREST/SUA 250 Quick Ref Press the T key. The nearest airport will be displayed, subject to the runway surface type and minimum runway length currently selected. TO VIEW OTHER NEAREST APTS: ❏ Rotate K to the right. TO VIEW ANY ADDITIONAL AIRPORT INFO: The GNC 250’s T key also provides access to Special Use Airspace information that you are currently being alerted to.
250 Quick Ref 7/14/98 9:14 AM Page 19 TO CREATE OR EDIT A ROUTE: Active Route Page ❏ Rotate K to display the route number you would like to create or edit (route 0 for the active route). ❏ Press C twice to activate the cursor in the GPS window. Route Catalog Page The RTE key allows you to create, edit and activate routes; and provides access to search and rescue, offset navigation and closest point of approach functions.
250 Quick Ref 7/14/98 9:14 AM Page 20 ACTIVATING AND DELETING ROUTES FLYING THE ACTIVE ROUTE TO REVIEW ROUTE WAYPOINTS FROM THE ACTIVE ROUTE PAGE: ROUTES ❏ TO ACTIVATE A ROUTE: ❏ ❏ Press R and rotate O to display the route catalog page. ❏ Rotate K to display the desired route. ❏ Press C twice to activate the cursor in the GPS window. ❏ Rotate K to select the ‘activate?’ option from the route action field. ❏ ❏ Press E. The route will be copied into route 0 (the active route).
250 Quick Ref 7/14/98 9:15 AM Message Page Page 21 The MSG key is used to view system messages and access the GNC 250’s unit settings. To view a message, press MSG. To access the unit settings pages, press and hold the MSG key for more than two seconds, and rotate the outer knob with the cursor inactive.
250 Quick Ref 7/14/98 9:15 AM UNIT SETTINGS CDI SETTINGS— Page 22 allows you to set the CDI scale to 0.3, 1.0 or 5.0 nm scale or an automatic scale. The default setting is 5.0 nm. MAG VAR/ARVL ALARM— allows you to select between true, auto or user-defined magnetic variation options and set an arrival alarm for waypoint arrival at a specified distance from a destination waypoint. The default setting for magnetic variation is ‘auto’.
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250 Quick Ref 7/14/98 9:15 AM Page 24 ® © 1995 GARMIN International 9875 Widmer, Lenexa, KS 66215, USA GARMIN/Europe LTD Robert House, Station Approach Romsey, Hampshire SO51 8DU UK Part No. 190-00067-51 Rev.