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TIS Operational Procedures
TIS warns the user with voice and visual trafﬁc advisories whenever
it predicts an intruder to be a threat. The user should not start
evasive maneuvers using information from the GPSMAP 496 screen
or on a trafﬁc advisory only. The display and advisories are intended
only for assistance in visually locating the trafﬁc, due to the lack in
resolution and coordination ability. The ﬂight crew should attempt to
visually acquire the intruder aircraft and maintain a safe separation
in accordance with the regulatory requirements and good operating
practice. If the ﬂight crew cannot visually acquire the aircraft,
they should contact ATC to obtain any information that may assist
concerning the intruder aircraft. Based on the above procedures,
minor adjustment to the vertical ﬂight path consistent with air trafﬁc
requirements are not considered evasive maneuvers.
The TIS Trafﬁc Advisory (TA) should alert the crew to use
additional vigilance to identify the intruding aircraft. Any time
the trafﬁc symbol becomes a yellow circle or a voice warning is
announced, conduct a visual search for the intruder. If successful,
maintain visual contact to ensure safe operation.
+ 500 ft
This area within 34 seconds - 500 ft
Conditions for Trafﬁc Advisories
TIS shows a Trafﬁc Advisory (TA) on the GPSMAP 496 when an
intruder aircraft approaches your aircraft on a course that intercepts
(deﬁned by a 0.5 nm horizontal radius and a relative altitude of ±
500 ft) your course within 34 seconds.
GPSMAP 496 Owner’s Manual 153
TIS > OPERATION PROCEDURES
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The GPSMAP 496 can also output frequency data to a Garmin aviation
radio. Currently the two models supported are the SL30 nav/comm and
the SL40 comm. Refer to page 159 for wiring information.
CAUTION: This interface does not have an FAA installation
airworthiness approval. If any abnormalities with SL 30/40
tuning or operation are encountered, disconnect the GPSMAP
496 from the SL 30/40 tuning interface.
To conﬁgure the VHF comm output:1. Press MENU twice. The Main Menu appears.
2. Highlight the
3. Use the
ROCKER to select the Interface sub tab.
4. Highlight the Serial Data Format ﬁeld and use the ROCKER
to select TIS In/NMEA & VHF Out or Aviation In/NMEA &
VHF out . These comm modes send both NMEA data and
VHF frequency information.
The following features are now available on the radio:
• Remote frequency lists for departure, enroute, and arrival airports
• Nearest VOR frequencies (SL30 only)
NOTE: See your SL30/40 User’s Guide regarding information
on accessing remote frequency lists.
You can also use the GPSMAP 496 to directly tune a standby
frequency in the radio by using the Comm tab when reviewing an
To select a standby comm frequency:
1. Use the map pointer or the NRST key to select an airport.
2. Highlight the
Comm sub tab.
3. Select a comm frequency, and press
ENTER. The frequency is
now tuned in the standby slot on the radio.
If the comm frequency has a restriction, the restriction page has a
button, which performs the same function.
154 GPSMAP 496 Owner’s Manual
VHF COMM > OVERVIEW
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Size: 5.7'' W x 3.2'' H x 1.9'' D
(14.5 x 8.1 x 4.8 cm)
Weight: 14.2 oz (.40 kg)
Display: 3.75'' diagonal (9.5 cm) Transﬂective, 256-color
display with backlighting (480 x 320 pixels)
Case: Fully gasketed, high-impact plastic alloy,
waterproof to IEC 60529 IPX7
Temp. Range: 5°F to 140°F (-15°C to 60°C)
Battery: Rechargeable lithium-ion
Battery Life : 4 to 15 hours based on the XM antenna and
Source: 11–35 VDC
Fuse: 3AG-1.5 Amp
Receiver: Differential-ready 12 parallel channel receiver
Acquisition Times: Approx. 15 seconds (warm start)
Approx. 45 seconds (cold start)
Approx. 5 minutes (First Time/AutoLocate®)
Update Rate: 5/second, continuous
GPS: 15 meters (49 feet) RMS 95% typical
DGPS (USCG): 3–5 meters (10–16 ft), 95% typical
DGPS (WAAS): < 3 meters (10 ft) 95% typical with DGPS
Velocity : 0.1 knot RMS steady state
Dynamics: 6 g's
GPSMAP 496 Owner’s Manual 155
APPENDIX > SPECIFICATIONS
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To resolve problems that cannot be remedied using this guide,
contact Garmin Product Support in the USA at 800/800.1020 or
Garmin Europe at 44/0870.8501241.
Cleaning the Unit
The GPSMAP 496 is constructed of high quality materials and does
not require user maintenance other than cleaning. Clean the unit
using a cloth dampened with a mild detergent solution and then wipe
dry. Avoid chemical cleaners and solvents that may damage plastic
Storing the GPSMAP 496
Do not store the GPSMAP 496 where prolonged exposure to
temperature extremes can occur (such as in the trunk of a car) as
permanent damage may result. User information, such as waypoints
and routes, is retained in the unit’s memory without the need for
external power. It is always a good practice to back up important
user data by manually recording it or downloading it to a PC
(transferring it to MapSource).
Immersing the Unit in Water
The GPSMAP 496 is waterproof to IEC Standard 60529 IPX7. It can
withstand immersion in 1 meter of water for 30 minutes. Prolonged
submersion can cause damage to the unit. After submersion, be
certain to wipe and air dry the unit before reuse or charging.
156 GPSMAP 496 Owner’s Manual
APPENDIX > CARE INFORMATION
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In addition to the standard accessories included with your
GPSMAP 496, the optional accessories are designed to enhance
the operation of the GPSMAP 496.
To obtain replacement parts and optional accessories, contact
your Garmin dealer, Garmin Product Support in the USA at
800/800.1020, or Garmin Europe at 44/0870.8501241.
WARNING: Garmin accessories have been designed and
speciﬁcally tested for use with Garmin products. Accessories
offered for sale by other manufacturers have not been tested or
approved for use with Garmin products. Use of such accessories
could cause damage to the GPSMAP 496 and void the warranty.
PC Interface Cable—Connects the unit to a serial port on your PC.
Power/Data Cable—Allows you to connect the unit to the electrical
system using the bare wires. Programmable Data Cards
—Blank data cards available in a variety
of sizes. Download detailed map data from MapSource CD-ROMs to a
data card, either directly through your GPSMAP 496 using the included
USB-PC Interface Cable, the optional PC Interface Cable (with a Serial
connector), or with the optional USB Data Card Programmer.
USB Data Card Programmer
—Programs blank data cards at high speed
through a PC.
Carrying Case—Protects the GPSMAP 496 when not in use; with storage
for data cards.
Protective Cover—Snaps on the front of the unit to protect the screen from
MapSource Software CD-ROMs—Offers several detailed mapping
options that are compatible with the GPSMAP 496, including BlueChart,
Fishing Hot Spots, and Topo.
Pre-Programmed Data Cards
—Data cards pre-programmed with either
Garmin BlueChart or Fishing Hot Spots map data.
GPSMAP 496 Owner’s Manual
APPENDIX > OPTIONAL ACCESSORIES