Garmin GNC 250 User manual

GNC 250
Pilot’s Quick
Reference Guide
ACTV STBY GNC 250
NAVWPTRTENRSTSQ MSG
CLR ENT
CRSR
®
250 Quick Ref 7/14/98 9:14 AM Page 1

250 Quick Ref 7/14/98 9:14 AM Page 2

CURSOR/DATA ENTRY
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. Pressing
C
a third time turns the cursor off.
Comm
Window
}
GPS
Window
}
{
{
250 Quick Ref 7/14/98 9:14 AM Page 3

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.
\ The clear key is used to erase information or cancel an entry.
E The enter key approves operations and confirms data entry and prompts.
CURSOR/DATA ENTRY
ACTV STBY GNC 250
NAVWPTRTENRSTSQ MSG
CLR ENT
CRSR
250 Quick Ref 7/14/98 9:14 AM Page 4

FLYING START
POWER UP
❏
Insert data card in card slot.
❏
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.
SELECT ACTIVE AND STANDBY FREQUENCIES
❏
Press C to activate the cursor in the standby frequency field.
❏
Rotate O and K to dial in the desired active frequency.
❏
Press @ to place the selected frequency in the active field.
❏
Rotate O and K to dial in the desired standby frequency.
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TO SELECT A DIRECT-TO DESTINATION:
❏
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.
❏
Repeat steps 2 and 3 until the desired waypoint is displayed.
❏
Press E to confirm the identifier. The direct-to confirmation page will appear, showing the
position of the selected destination and the course from your present position.
❏
Press E to confirm the direct-to destination. The navigation page will appear, displaying
detailed navigation data to your destination. The graphical CDI at the upper left corner of the
page indicates the distance and direction you are off course on a 5.0 nm scale.
FLYING START
250 Quick Ref 7/14/98 9:14 AM Page 6

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.
TO OVERRIDE THE AUTOMATIC SQUELCH:
❏
Press the
Q
squelch key. Press
Q
again to return to automatic squelch.
COMMUNICATION
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TO AUTO-TUNE A FREQUENCY DISPLAYED
IN THE GPS DATABASE:
❏
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.
COMMUNICATION
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Waypoint Category
Each waypoint category features
a set of waypoint pages accessible
by rotating the outer knob with the
cursor inactive.
Proximity Waypoint Page
User Waypoints Page
Waypoint Comments Page
Airport Identification
Airport Comments
Airport Position
Airport Communications
Airport Runway
WAYPOINT & AIRPORT INFO
The WPT key is used to view position, runway, frequency
and other information on airports, VORs, NDBs, inter-
sections and user waypoints. To scroll through the way-
point pages, press WPT and rotate the outer knob.
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TO ACCESS APT INFORMATION:
❏
Press the
W
key.
❏
Press
C
twice to activate the cursor.
❏
Press
E
to confirm the ‘apt?’ category. The airport
identification page will appear with the identifier
field ready for entry.
TO ENTER APTS BY IDENTIFIER:
❏
Highlight an identifier field, and enter the identifier.
❏
As the identifier is entered, the GNC 250 will dis-
play any waypoints with the same identifier letters
you have entered to that point.
❏
When the desired airport is displayed, press
C
.
TO SELECT AN APT BY FACILITY
NAME OR CITY:
❏ From the airport identification page, highlight the
second field in the GPS window to enter the city
name, OR:
highlight the last field in the GPS window to enter
the facility name.
❏
Enter the city or facility name of the airport.
❏
Press
C
to finish.
WAYPOINT & AIRPORT INFO
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