Garmin GNC 250 GPS Receiver User Manual

250 Quick Ref
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ACTV
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STBY
GNC 250
CLR
CRSR
SQ
NRST
RTE
WPT
NAV
MSG
ENT
GNC 250
Pilot’s Quick
Reference Guide
®
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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. Pressing C a third time turns the cursor off.
CURSOR/DATA ENTRY
}
{
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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.
The enter key approves operations and confirms data entry and prompts.
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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.
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.
FLYING START
❏
Insert data card in card slot.
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TO SELECT A DIRECT-TO DESTINATION:
❏
❏
FLYING START
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❏
❏
❏
❏
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.
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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:
❏
COMMUNICATION
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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.
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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. To scroll through the waypoint pages, press WPT and rotate the outer knob.
WAYPOINT & AIRPORT INFO
Waypoint Category
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TO ACCESS APT INFORMATION:
WAYPOINT & AIRPORT INFO
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❏
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.
❏
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.
TO ENTER APTS BY IDENTIFIER:
❏
Highlight an identifier field, and enter the identifier.
❏
As the identifier is entered, the GNC 250 will display any waypoints with the same identifier letters
you have entered to that point.
❏
Enter the city or facility name of the airport.
When the desired airport is displayed, press C.
❏
Press C to finish.
❏
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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.
DIRECT-TO
TO RE-CENTER THE D-BAR:
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USING THE DIRECT-TO CONFIRMATION PAGE
DIRECT-TO
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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.
TO REVIEW THE LOCATION/FACILITY NAME OF THE DIRECT-TO WAYPOINT:
❏
Highlight the location field and rotate K.
TO ENTER A DESIRED COURSE TO OR FROM THE DESTINATION WAYPOINT:
❏
Highlight the course select (‘crs’) field and use K and O to enter the desired course. Press E when finished.
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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.
❏
To enter a desired course to or from the destination waypoint,
highlight the ‘crs’ field and use K and O to enter the
desired course.
❏
Waypoint sequencing field set to AUTO.
Press E when finished.
Waypoint sequencing field set to HOLD.
DIRECT-TO
TO HOLD ON A WAYPOINT:
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USING THE COURSE SELECT FUNCTION
DIRECT-TO
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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.
❏
To establish a new GPS calculated course, press D, then E. Press E again to confirm the ‘ok?’ prompt.
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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.
NAVIGATION
NAV Menu 2
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❏
❏
❏
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.
POSITION PAGE
NAVCOM PAGE
CDI PAGE
NAVIGATION
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❏
Displays the available communication
frequencies of the nearest or departure
airport, as well as the frequency of the
arrival airport during direct-to and
route operations.
❏
To scroll through the frequencies list,
rotate the inner knob with the cursor
inactive.
❏
To place a displayed frequency in the
standby field, highlight the frequency
with the cursor and press E.
❏
Displays your present position and altitude information (altitude, msa or esa).
❏
The reference waypoint field indicates
your radial and distance from the nearest airport, VOR, NDB, intersection or
user waypoint, and can be used to
maintain a radial or distance from a
waypoint.
❏
You may also display the radial and distance from any other waypoint (not just
the nearest waypoint of each category)
by selecting the ‘wpt’ category and
entering the desired identifier.
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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.
NEAREST/SUA
Nearest FSS Page
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NEAREST WAYPOINT INFORMATION
SPECIAL USE AIRSPACE ALERTS
TO VIEW NEAREST APT INFORMATION:
❏
NEAREST/SUA
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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.
TO VIEW THE SUA ALERT PAGE:
❏
Highlight the frequency field or the runway identification field.
❏
Press the T key.
❏
Rotate K to scroll through any additional information.
❏
Rotate O one stop to the right.
❏
To view other wpt categories, remove the cursor and
rotate the outer knob.
To toggle the display between the SUA name and the controlling
agency and scroll through other SUA alerts, rotate K in either
direction.
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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. To scroll through the route pages, press RTE
and rotate the outer knob; or press the RTE key repeatedly.
❏ Rotate K to select the ‘edit?’ option from the route action field.
Press E.
❏ To add a route waypoint, highlight the first blank waypoint field or the
point where you want to enter the new waypoint. Enter the waypoint
identifier and press E. Press E again to accept the waypoint confirmation page.
❏ To delete a route waypoint, highlight the waypoint and press \, then
E.
ROUTES
❏ Press the R key and rotate O until the route catalog page appears.
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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).
❏
TO DELETE/STOP NAVIGATING A ROUTE:
❏
Follow the first three steps described above.
❏
Rotate K to select the ‘delete?’ option and press E.
With the cursor off, rotate K in the direction of the arrow prompts.
To manually select your next route waypoint, highlight the desired waypoint with the flashing cursor and press D, followed by E. The
GNC 250 will provide direct navigation guidance to the selected waypoint and resume navigating the remainder of the route in sequence.
TO HOLD ON A ROUTE WAYPOINT:
❏
❏
Highlight the route waypoint you want to hold on and press D.
Rotate O to highlight the waypoint sequencing field and use K to
select the ‘hold’ setting. Press E to accept.
Use K and O to enter the desired course. Press E to confirm.
Press E to confirm the ‘ok?’ prompt. The CDI page will display the
course at the bottom left of the page.
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Message Page
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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.
Press and hold MSG
for 2 seconds
Mag Var/Arrival Alarms
Nearest Apt Search
Display Intensity
I/O Channel 2
Map Datum
Battery Saver
SUA Settings
Units of Measure
Trip Timer
UNIT SETTINGS
CDI Settings
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UNIT SETTINGS
CDI SETTINGS—
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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’.
NEAREST APT SEARCH— allows you to define the runway length and surface type
used in determining which nearest airports are displayed.
The default settings are ‘0 ft/mt’ for length and ‘any’ for
runway surface.
BATTERY SAVER—
allows you to specify a timeout interval for the GNC 250
display. The default setting is 30 seconds.
DISPLAY INTENSITY—
allows you to manually adjust the brightness of the display. The default setting is for automatic brightness.
TRIP TIMER—
provides a running clock on Nav Menu 2 that may be set
to run when power is on or when ground speed exceeds a
user-defined minimum.
UNITS OF MEASURE—
allows you to select units of measure for various navigation and planning displays.
SPECIAL USE AIRSPACE— allows you to turn specific controlled/restricted airspace
message alerts on or off. Turning message alerts off will
not prevent SUA information from being displayed on the
nearest SUA page.
MAP DATUM—
allows you to select or define the map datum used. The
default datum is WGS ‘84.
I/O CHANNEL 2—
allows you to select input and output interface settings
and baud rate for channel 2. The default settings are ‘off’.
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®
© 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. A Printed in USA