Garmin GTN 725 User manual

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Utilities
GTN 725/750
Cockpit Reference Guide (CRG)
Flight Plan

Warnings, Cautions, and Notes
GTN 725/750 Cockpit Reference Guide (CRG) 190-01007-04 Rev. B
ii
WARNING: Navigation and terrain separation must NOT be predicated
upon the use of the terrain function. The GTN 725/750 Terrain Proximity
feature is NOT intended to be used as a primary reference for terrain
avoidance and does not relieve the pilot from the responsibility of being
aware of surroundings during flight.The Terrain Proximity feature is only
to be used as an aid for terrain avoidance and is not certified for use in
applications requiring a certified terrain awareness system. Terrain data
is obtained from third party sources. Garmin is not able to independently
verify the accuracy of the terrain data.
WARNING: The displayed minimum safe altitudes (MSAs) are only
advisory in nature and should not be relied upon as the sole source
of obstacle and terrain avoidance information. Always refer to current
aeronautical charts for appropriate minimum clearance altitudes.
WARNING: The Garmin GTN 725/750 has a very high degree of functional
integrity. However, the pilot must recognize that providing monitoring
and/or self-test capability for all conceivable system failures is not
practical. Although unlikely, it may be possible for erroneous operation
to occur without a fault indication shown by the GTN 725/750. It is thus
the responsibility of the pilot to detect such an occurrence by means of
cross-checking with all redundant or correlated information available in
the cockpit.
WARNING: The altitude calculated by GPS receivers is geometric height
above Mean Sea Level and could vary significantly from the altitude
displayed by pressure altimeters, such as the output from the GDC 74A/B
Air Data Computer, or other altimeters in aircraft. GPS altitude should
never be used for vertical navigation. Always use pressure altitude
displayed by pressure altimeters in the aircraft.
WARNING: Do not use outdated database information. Databases used
in the GTN 725/750 system must be updated regularly in order to ensure
that the information remains current. Pilots using an outdated database
do so entirely at their own risk.
WARNING: Do not use basemap (land and water data) information for
primary navigation. Basemap data is intended only to supplement other
approved navigation data sources and should be considered as an aid
to enhance situational awareness.

Warnings, Cautions, and Notes
190-01007-04 Rev. B GTN 725/750 Cockpit Reference Guide (CRG) iii
WARNING: Traffic information shown on the GTN 725/750 is provided
as an aid in visually acquiring traffic. Pilots must maneuver the aircraft
based only uponATC guidance or positive visual acquisition of conflicting
traffic.
WARNING: XM Weather should not be used for hazardous weather
penetration. Weather information provided by the datalink receiver is
approved only for weather avoidance, not penetration.
WARNING: NEXRAD weather data is to be used for long-range planning
purposes only. Due to inherent delays in data transmission and the relative
age of the data, NEXRAD weather data should not be used for short-range
weather avoidance.
WARNING: For safety reasons, GTN 725/750 operational procedures
must be learned on the ground.
WARNING: To reduce the risk of unsafe operation, carefully review and
understand all aspects of the GTN 725/750 Pilot’s Guide as well as this
guide. Thoroughly practice basic operation prior to actual use. During
flight operations, carefully compare indications from the GTN 725/750
to all available navigation sources, including the information from other
NAVAIDs, visual sightings, charts, etc. For safety purposes, always resolve
any discrepancies before continuing navigation.
WARNING: Never use datalinked weather to attempt to penetrate a
thunderstorm. Both the FAAAdvisory Circular, Subject:Thunderstorms, and
theAirman’s Information Manual (AIM) recommend avoiding“by at least 20
miles any thunderstorm identified as severe or giving an intense radar echo.”
CAUTION: The United States government operates the Global Positioning
System and is solely responsible for its accuracy and maintenance. The
GPS system is subject to changes which could affect the accuracy and
performance of all GPS equipment. Portions of the GTN 725/750 utilize
GPS as a precision electronic NAVigationAID (NAVAID).Therefore, as with
all NAVAIDs, information presented by the GTN 725/750 can be misused
or misinterpreted and, therefore, become unsafe.

Warnings, Cautions, and Notes
GTN 725/750 Cockpit Reference Guide (CRG) 190-01007-04 Rev. B
iv
CAUTION: The Garmin GTN 725/750 does not contain any user-
serviceable parts. Repairs should only be made by an authorized Garmin
service center. Unauthorized repairs or modifications could void both the
warranty and the pilot’s authority to operate this device under FAA/FCC
regulations.
CAUTION: The GTN 725/750 has a display that is coated with a special
anti-reflective coating that is very sensitive to waxes and abrasive
cleaners. CLEANERS CONTAINING AMMONIA WILL HARM THE ANTI-
REFLECTIVE COATING. It is very important to clean the display using a
clean, lint-free cloth and an eyeglass lens cleaner that is specified as safe
for anti-reflective coatings.
CAUTION: Garmin would like to remind pilots flying with GDL
69/69A-equipped aircraft that TFRs are only advisory and Garmin would
like to remind pilots flying with GDL 69/69A-equipped aircraft that TFRs
are only advisory and are not a replacement for a thorough preflight
briefing on TFR times and locations. Always confirm TFR data through
official sources and contact your Flight Service Station for interpretation
of TFR data.
NOTE: All visual depictions contained within this document, including
screen images of the GTN 725/750 bezel and displays, are subject to
change and may not reflect the most current GTN 725/750 software.
Depictions of equipment may differ slightly from the actual equipment.
NOTE: This device complies with part 15 of the FCC Rules. Operation is
subject to the following two conditions: (1) this device may not cause
harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
NOTE: Terrain data is not displayed when the aircraft latitude is greater
than 75°North or 60°South.
NOTE: This product, its packaging, and its components contain chemicals
known to the State of California to cause cancer, birth defects, or
reproductive harm. This notice is being provided in accordance with
California’s Proposition 65. If you have any questions or would like
additional information, please refer to our web site at www.garmin.com/
prop65.

Warnings, Cautions, and Notes
190-01007-04 Rev. B GTN 725/750 Cockpit Reference Guide (CRG) v
NOTE: Canadian Installations: In accordance with Canadian Radio
Specifications Standard 102 (RSS 102), RF field strength exposure to
persons from an antenna connected to this device should be limited
to 60V/m for controlled environment and 28 V/m for uncontrolled
environment.

vi
GTN 725/750 Cockpit Reference Guide (CRG)
190-01007-04 Rev. B
Record of Revisions
Part Number Revision Date Description
190-01007-04 A
B
Feb 2011
Mar 2011
Initial Release
Updated message list.

1190-01007-04 Rev. B
GTN 725/750 Cockpit Reference Guide (CRG)
Introduction
INTRODUCTION
This cockpit reference guide (CRG) is intended to serve as a quick reference
covering the basic features and operating procedures for the GTN 725/750.
For detailed descriptions of any information found in this guide, refer to the
latest revision of the GTN 725/750 Pilot’s Guide, P/N 190-01007-03 found at
www.garmin.com.
Large
and Small
Knobs
Volume and
Squelch
Active COM Frequency
Standby COM
Frequency
Active NAV
Frequency
Transponder
Display
Audio Panel
Flip/Flop
Keys for
COM
Standby
NAV
Frequency
Direct-To
Key
Photo
Sensor
Home
Key
SD Card
Messages
Function
Icons
Touchscreen
Display
Large and Small Knob
Function Annunciation
Locking
Screw
GTN 750 Front Panel/Main Page
Direct-To Key - Press to provide a direct course to a selected
waypoint.
Home Key - A single press of the Home Key returns the user
to the main page to access features. Pressing and holding the
HOME key while on any page will display the default MAP page.
Volume and Squelch Knob - Upper left knob controls volume of
the COM and NAV radios. Press to use the IDENT function of the
NAV radio. Pressing and holding the volume knob will change the
frequency to emergency frequency.
Large and Small Knobs - Both are rotary knobs. The small
knob can be pressed and held in to flip-flop COM and NAV
frequencies.

2
GTN 725/750 Cockpit Reference Guide (CRG)
190-01007-04 Rev. B
GPS/NAV/COM
NAV/COM RADIO (GTN 750 Only)
Active COM Frequency Active NAV Frequency
Standby COM Frequency Standby NAV Frequency
Transponder ID
COM and NAV Radio Frequencies
Touchscreen Entry
NOTE:
*
designates functions that are accomplished by touching.
Cyan colored keys represent fields that can be modified, white colored
keys represent keys that change the state of operation for the related
feature.
The COM or NAV frequency is changed by touching the STBY field and
using the keypad to enter the desired frequency. Press Enter when finished or
Back to exit without making changes. If an entry was started, touch Cancel
to exit out of the screen without making changes.
*
COM Standby Page
Mon: Monitors the standby COM frequency.
Find: Displays categories for User, Recent, Nearest, and Flight Plan
frequencies.
Xfer: Automatically enters the frequency to the active COM or NAV
frequency window.
NOTE: The NAV Standby page is identical to the COM Standby page
except that there is no MON key.

3190-01007-04 Rev. B
GTN 725/750 Cockpit Reference Guide (CRG)
GPS/NAV/COM
Selecting a NAV/COM Frequency using Rotary Knobs
Turn or momentarily press the1. small knob once to highlight the STBY
field of COM or NAV. The knob function defaults to COM after 30
seconds of inactivity.
Turn the2. large knob to the desired MHz value.
Turn the3. small knob to the desired kHz value.
Press the4. small knob to confirm entry.
Frequency Flip/Flop
To flip/flop the active and standby NAV/COM frequencies, press and
hold the small knob or touch the active NAV/COM frequency field. An
annunciation, Hold for Flip-Flop, will be displayed near the knobs.
Audio Panel
The audio panel allows you to control the audio equipment of the aircraft.
A green bar indicates that a particular selection is enabled. Touch the Audio
Panel key on the main page (see Page 5) to configure speakers, radios, and
microphone.
*
Audio Panel Key
The audio panel options page will be displayed.
Audio Panel Options

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GTN 725/750 Cockpit Reference Guide (CRG)
190-01007-04 Rev. B
GPS/NAV/COM
Split Mode: Touch to select Split COM Mode in which the pilot
transmits and receives on COM 1 and Co-pilot
transmits and receives on COM 2.
Playback Controls: Touch to use the audio clearance recorder.
Cabin Speakers: Touch to activate cabin speaker.
Speaker Volume: Touch to adjust the speaker volume of the cabin
speakers.
Marker Audio: Touch to hear tones for marker beacons.
Marker Volume: Touch to adjust the volume of the marker beacon
broadcast.
Marker Hi Sense: Touch to allow detection of the outer marker
beacon at a greater distance.
Monitored Radios
The Monitor function assures that the aircraft radio transmissions will not
be interrupted by entertainment or another audio source. The music will
be muted when “mute during radio/intercom” is selected from the Intercom
Setup page.
Mic Selection
Use the Audio Panel page to select the microphone for transmitting. Mic
selection can be accomplished by touching the Audio Panel key on the main
page.

5190-01007-04 Rev. B
GTN 725/750 Cockpit Reference Guide (CRG)
GPS/NAV/COM
Intercom
*
Intercom
Touch to adjust
pilot’s volume
and squelch.
Touch to adjust
co-pilot’s volume
and squelch.
Touch to
adjust
passenger’s
volume and
squelch.
Touch to
display the
telephone
configuration
page.
Touch to
display the
configuration
page for
Music 1 or
Music 2.
Music Configuration Page Telephone Configuration Page
Touch arrow
to activate
communication
between
recipients. See
Intercom
Modes table.
Intercom Setup Page

6
GTN 725/750 Cockpit Reference Guide (CRG)
190-01007-04 Rev. B
GPS/NAV/COM
Intercom Setup
The green arrow indicates active communication between the selected
recipients.
Mode Pilot Hears Co-Pilot Hears Passengers Hear
Selected radios, pilot Selected radios,
co-pilot
Passengers
Selected radios, pilot,
co-pilot
Selected radios, pilot,
co-pilot
Passengers
Selected radios, pilot,
co-pilot
Selected radios,
co-pilot, pilot,
passengers
Co-pilot,
passengers
Selected radios, pilot,
passengers
Selected radios,
co-pilot
Pilot, passengers
Selected radios, pilot Selected radios,
co-pilot, passengers
Co-pilot,
passengers
Selected radios, pilot,
co-pilot, passengers
Selected radios, pilot,
co-pilot
Selected radios,
pilot, passengers
Selected radios, pilot,
passengers
Selected radios,
co-pilot, passengers
Selected radios,
pilot, co-pilot,
passengers
Selected radios, pilot,
co-pilot, passengers
Selected radios, pilot,
co-pilot, passengers
Selected radios,
pilot, co-pilot,
passengers
Intercom Modes

7190-01007-04 Rev. B
GTN 725/750 Cockpit Reference Guide (CRG)
Transponder
TRANSPONDER
Transponder Control
Touch the Squawk Code Field to display the Transponder panel. Touch the
Transponder Mode field to select available modes.
IDENT Field
Squawk Code Field
Transponder Modes:
Standby, Ground, On,
Altitude Reporting
Transponder Control
Transponder ID
Touch the Squawk Code Field. Enter the frequency (for either XPDR 1 or
XPDR 2) using the displayed keypad. Touch ENTER to confirm selection.
IDENT
Touch IDENT to activate the transponder’s IDENT function. The key text
remains gray and will change to green when IDENT mode is active.
*
Transponder Mode

8
GTN 725/750 Cockpit Reference Guide (CRG)
190-01007-04 Rev. B
Transponder
Transponder
Mode - Green
indicates
current
condition
Transponder Panel Page
Standby: Touch to place transponder in Standby mode. It is still
powered, but will not transmit information. STBY displays in
the squawk code field.
Ground: Touch to place transponder in Ground mode. Mode S
interrogations will be allowed. GND displays in the squawk
code field.
On: Touch to turn transponder On for Mode A operation. Will
transmit the squawk code when interrogated. ON displays in
the squawk code field.
Altitude
Reporting:
Touch for Mode C operation. The transponder will be on and
will transmit its squawk code and altitude when interrogated.
ALT displays in the squawk code field.
VFR: Touch to set the squawk code to 1200.

9190-01007-04 Rev. B
GTN 725/750 Cockpit Reference Guide (CRG)
Transponder
Special Squawk Codes
As you change a squawk code, the original code will be sent until you are
finished selecting the new code.
The table below lists special squawk codes:
Squawk Code Description
1200 Default VFR code in the USA
7500 Hijacking
7600 Loss of Communications
7700 Emergency
Special Squawk Codes
NOTE: While 1200 is the default VFR squawk code, the installer can
configure any code to the VFR key. This is to support international
operations where 1200 may not be used.

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GTN 725/750 Cockpit Reference Guide (CRG)
190-01007-04 Rev. B
Map
MAP
*
Map
Map Page
* *
Map Menu
Touch to select
which overlays are
displayed. A green
bar indicates the
selection is enabled.
Touch to select which
fields are displayed in
four corners on Map
page.
Touch to restore
the map page to
the original factory
settings.
Touch to customize how
the map, aviation, land,
and weather information is
displayed on the map page.
Touch, hold and slide
to set how much
detail is shown on the
map page.
Map Menu Options Page

11190-01007-04 Rev. B
GTN 725/750 Cockpit Reference Guide (CRG)
Map
Changing NAV Data Fields
* * *
Change NAV Data Fields
Changing Data Fields
The data fields located at each of the four corners of the Map page can be
configured to display any combination of four different navigation parameters.
To exit without changes to the Map page, touch Cancel.
Change NAV Data Field Mode
BRG - Bearing to Current Waypoint
DIS - Distance to Current Waypoint
DIS to Dest - Distance to Destination
DTK - Desired Track
ESA - Enroute Safe Altitude
ETA - Estimated Time of Arrival
ETA at Dest - ETA at Destination
ETE - Estimated Time Enroute
ETE to Dest - ETE to Destination
Fuel Flow - Total Fuel Flow
Generic Timer - Timers (Utilities)
GS - GPS Ground Speed
GSL - GPS Altitude
MSA - Minimum Safe Altitude
OAT (static) - Static Air Temperature
OAT (total) - Total Air Temperature
Time - Current Time
TKE - Track Angle Error
Trip Timer - Timers (Utilities)
TRK - Track
VSR - Vertical Speed Required
Wind - Wind Speed and Direction
XTK - Cross Track Error
OFF - Do Not Display Data Field
Selections Available for NAV Data Fields

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GTN 725/750 Cockpit Reference Guide (CRG)
190-01007-04 Rev. B
Map
Pan Mode
NOTE: Annunciations for TIS Traffic Coasting or Traffic Removed are
not present while in pan mode. For more information refer to page 15.
To enter Pan Mode, touch the map anywhere on the Map page. Drag your
finger across the map to move it as desired. In Pan Mode, touch any symbol
on the map to highlight, then touch the information key to display any
available information related to that symbol. Touch the Next key to cycle to
other waypoints close to the cursor.
User Waypoints
Touch any location on the map that is not an existing waypoint to create
a user waypoint. The Waypoint Info key will display, “Create Waypoint”
and will display the “Create User Waypoint” page. See the “Waypoint Info,
Creating User Waypoint” section.
Cursor
Waypoint Info Key
Back Key Next Key
Touch to
create or
edit flight
plan
To exit Pan Mode, touch the Back key. To enter or edit a flight plan, touch
the Graphically Edit FPL key.

13190-01007-04 Rev. B
GTN 725/750 Cockpit Reference Guide (CRG)
Map
Creating (or Editing) a Flight Plan in Pan Mode
While in Pan Mode, touch the Graphically Edit FPL key to add/remove
waypoints and/or alter a course line in an existing flight plan. You can also
enter or edit an existing flight plan by touching the Flight Plan key on the
home page. See the Flight Plan section of this guide.
*
Edit Flight Plan
On the Map page, enter Pan Mode by touching the screen. Touch the
Graphically Edit FPL key. Touch any waypoint that you want to be part of
your flight plan. Should you make an error, touch the Undo key. The Undo
key will reverse up to the last nine consecutive edits. When finished, touch
the Done key to save your changes. Touch Cancel to leave the page without
making any changes to the flight plan.
Touch to exit
page without
changes to
flight plan.
Flight Plan on Map Page

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GTN 725/750 Cockpit Reference Guide (CRG)
190-01007-04 Rev. B
Traffi c
TRAFFIC
*
Traffic
Touch to select Traffic Mode.
Selections are Operate and
Standby.
Touch to select the altitude filter.
Selections are Normal, Above,
Below, or Unrestricted.
Traffic Page
Altitude Filter Displayed Traffic Range
Below -9900 ft to 2700 ft
Normal -2700 ft to 2700 ft
Above -2700 ft to 9900 ft
Unrestricted All Traffic Shown
The Test key tests the communication between the GTN and the configured
traffic device. There are no menu options for the traffic page.