Garmin GPSMAP 800 Series Installation and operating instructions

400/500 Series
GTS 8XX Interface
Pilot’s Guide Addendum

Copyright © 2010 Garmin Ltd. or its subsidiaries. All rights reserved.
This manual reflects the operation of Software version 5.03 or later for 4XX series products and
6.03 for 5XX series products. Some differences in operation may be observed when comparing
the information in this manual to earlier or later software versions.
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January 2010 190-00140-78 Rev. A Printed in the U.S.A.

WARNING: The altitude calculated by 4XX/5XX GPS receivers is geometric
height above Mean Sea Level and could vary significantly from the altitude
displayed by pressure altimeters in aircraft. GPS altitude should never be used
for vertical navigation. Always use pressure altitude displayed by pressure
altimeters in the aircraft.
WARNING: The Jeppesen database used in the 4XX/5XX system must be
updated regularly in order to ensure that its information remains current.
Updates are released every 28 days. A database information packet is included
in the 4XX/5XX package. Pilots using an outdated database do so entirely
at their own risk.
WARNING: The basemap (land and water data) must not be used for
navigation, but rather only for non-navigational situational awareness. Any
basemap indication should be compared with other navigation sources.
WARNING: For safety reasons, 4XX/5XX operational procedures must be
learned on the ground.
WARNING: 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 Garmin 4XX/5XX units utilize GPS as a
precision electronic NAVigationAID (NAVAID). Therefore, as with all NAVAIDs,
information presented by the 4XX/5XX units can be misused or misinterpreted
and, therefore, become unsafe.
WARNING: The GTS 8XX interface is intended for advisory use only to aid
the pilot in visually acquiring traffic. No avoidance maneuvers should be
based solely upon TAS or TCAS traffic information. It is the responsibility of
the pilot in command to see and manuever to avoid traffic.
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400/500 Pilot’s Guide Addendum for GTS 8XX Interface
190-00140-78 Rev. A
Warnings, Cautions, & Notes

NOTE: Unless otherwise specified within this manual, the term ‘4XX/5XX’
applies to all the following models: GPS 400, GNC 420(A), GNS 430(A),
GPS 500, GNS 530(A).
NOTE: References to the GTS 8XX throughout this document refer equally
to the GTS 800, GTS 820, and GTS 850 unless otherwise noted.
NOTE: All visual depictions contained within this document, including screen
images of the 4XX/5XX panel and displays, are subject to change and may
not reflect the most current 4XX/5XX system. 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: 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 website at www.garmin.com/prop65.
NOTE: This section assumes the user has experience operating the 4XX/5XX
units and the GTS 8XX.
NOTE: TIS is disabled when a GTS 8XX unit is installed.
400/500 Pilot’s Guide Addendum for GTS 8XX Interface
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Warnings, Cautions, & Notes
ii

GTS 8XX Interface Overview ..........................................................................................1
1.0 System Description.................................................................................................1
1.1 TCAS I Surveillance Volume....................................................................................1
1.2 Traffic Symbology ...................................................................................................2
1.3 TA Alerting Conditions............................................................................................2
1.4 Aural Alerts..............................................................................................................4
1.5 Self-Test ...................................................................................................................4
1.6 User-Initiated Test...................................................................................................5
1.7 Switching Between Standby and Operating Modes............................................6
1.8 Traffic Page ..............................................................................................................7
1.9 Traffic Page Display Range.....................................................................................7
1.10 Altitude Display Mode............................................................................................8
1.11 Traffic Warning Window........................................................................................10
1.12 Map Page Traffic Banner ......................................................................................10
1.13 Configuring Traffic Data on the Map Page .........................................................11
1.14 Thumbnail Traffic on Map Page ...........................................................................12
1.15 Highlighting Traffic Data Using Map Panning ....................................................13
400/500 Pilot’s Guide Addendum for GTS 8XX Interface
190-00140-78 Rev. A
Table of Contents
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GTS 8XX INTERFACE OVERVIEW
All information in this addendum pertains to the display and control of the Garmin
4XX/5XX Series units using a GTS 8XX interface. This addendum does not replace or
supercede the 4XX/5XX Pilot’s Guides. Refer to the 400/500 Series Display Interfaces
Pilot’s Guide Addendum (190-00140-10) when interfacing with non-Garmin
products
1.0 SYSTEM DESCRIPTION
The 4XX/5XX provides an optional display interface for the GTS 8XX Traffic
Advisory (TAS) and Traffic Collision Avoidance (TCAS I) Systems. The GTS 800
and GTS 820 are TAS systems, the GTS 850 is a TSO-Certified TCAS I system. The
GTS 8XX uses active interrogations of Mode A/C/S (GTS 820 and GTS 850 only) and
Mode A/C transponders to provide Traffic Advisories to the 4XX/5XX.
The GTS 8XX is an active traffic advisory system that operates as an aircraft-to-
aircraft interrogation device. The GTS 8XX monitors the airspace surrounding an
aircraft, and advises the flight crew where to look for transponder-equipped aircraft that
may pose a collision threat. When the GTS 8XX receives replies to its interrrogations,
it computes the responding aircraft’s range, bearing, relative altitude, and closure rate.
The GTS 8XX then determines the advisory status of the target and sends the location
information and alert status to the 4XX/5XX for display.
The GTS 800 is capable of tracking up to 45 Mode A/C/S intruders. The
GTS 820/850 is capable of tracking up to 45 Mode A/C plus 30 Mode S intruders. Up
to 30 of the most threatening targets are displayed.
Pilots should be aware of TAS/TCAS system limitations. If an intruder transponder
does not respond to interrogations due to antenna shading or marginal transponder
performance, it will not be displayed, or display may be intermittent. Pilots should
remain vigilant for traffic at all times when using TAS/TCAS systems for non-
transponder equipped airplanes or unresponsive airplanes.
1.1 TCAS I SURVEILLANCE VOLUME
Top and bottom mounted antennas allow an active surveillance range of up to
12 nm (GTS 800) or 40 nm (GTS 820/850) in the forward direction, and somewhat
reduced ranges to the sides and aft of own aircraft due to the directional interrogation
patterns. Interference limiting in GTS 820/850 units may automatically reduce range
in high density traffic areas.
400/500 Pilot’s Guide Addendum for GTS 8XX Interface
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GTS 8XX Interface

1.2 TRAFFIC SYMBOLOGY
Traffic information from the GTS 8XX is displayed on the 4XX/5XX unit using TAS/
TCAS symbology (Table 1) on a dedicated Traffic page, and on the moving Map Page.
The displayed traffic information generally includes the relative range, bearing, and
altitude of intruder aircraft. The GTS 8XX also generates aural announcements heard
on the cockpit audio system. Proximity Advisories and Other Traffic symbols normally
displayed in white may be displayed in cyan if configured for alternate traffic color (see
the applicable 4XX/5XX installation manual).
Symbol Traffic Type Description
Traffic
Advisory (TA)
A TA (Traffic Advisory) is generated when the GTS 8XX
predicts that an intruder aircraft may pose a collision
threat. A solid yellow circle represents an intruder aircraft
that meets the TA criteria as described in the TA Alerting
Conditions section. A TA consists of the traffic symbol and
an aural alert (e.g., “traffic, 12 o’clock, high, 3 miles”).
Out-of-
Range Traffic
Advisory
This solid yellow half circle appears (on the outer range ring)
under the same conditions and has the same urgency as a
TA. Its appearance differs from the TA only to signify that
the intruder is outside of the current range of the Traffic
Page.
Proximity
Advisory (PA)
Proximity Advisories (PA) are displayed as solid white (may
be configured as cyan) diamonds. PAs are defined as
traffic within the 6.0-nm range, within ±1200 ft. of altitude
separation, and are not a traffic advisory (TA).
Other Traffic
Symbol
The hollow white (may be configured as cyan) diamond
represents traffic detected within the selected display range
that does not meet the criteria for a TA or a PA and does
not pose an immediate collision threat.
Table 1 TAS/TCAS Symbology
1.3 TA ALERTING CONDITIONS
The GTS 8XX automatically adjusts its TA sensitivity level (Table 2) to reduce
the likelihood of nuisance TA alerting during flight phases likely to be near airports.
Level A (less sensitivity) TA sensitivity is used when the aircraft’s radar altimeter (if
400/500 Pilot’s Guide Addendum for GTS 8XX Interface
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GTS 8XX Interface

equipped) indicates own altitude is less than 2000 feet AGL. If no radar altimeter is
present, Sensitivity Level A is active when the landing gear is extended. Level A is also
active when groundspeed is less than 120 knots with no radar altimeter present in a
fixed gear aircraft. In all other conditions, Level B (greater sensitivity) TA sensitivity is
used to assess TA threats.
Sensitivity
Level
Intruder
Altitude
Available TA Alerting Conditions
AYes
Intruder closing rate provides less than 20 seconds of
vertical and horizontal separation.
Or:
Intruder range is within 0.2 nm and vertical separation is
within 600 feet.
A No Intruder closing rate is less than 15 seconds.
BYes
Intruder closing rate provides less than 30 seconds of
vertical and horizontal separation.
Or:
Intruder range is within 0.55 nm and vertical separation is
within 800 feet.
B No Intruder closing rate is less than 20 seconds.
Table 2 TA Sensitivity Level and TA Alerting Criteria
Target altitude relative to own aircraft altitude (relative altitude) is displayed (in
hundreds of feet) for each target symbol (Figure 1). If traffic is above own aircraft
altitude the relative altitude is shown above the target next to a ‘+’ symbol. If traffic
is below own aircraft altitude the relative altitude is shown below the target next to a
‘-’ symbol.
Altitude trend (Figure 1) is displayed as an up arrow (≥+500 fpm), down arrow
(≤-500 fpm), or no symbol if less than 500 fpm rate in either direction.
Figure 1 Traffic Symbol Components
Relative
Altitude
Altitude
Trend
Traffic
Type
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GTS 8XX Interface

1.4 AURAL ALERTS
A TA consists of a displayed traffic symbol (solid yellow circle) and an aural alert.
The aural alert announces “traffic”, followed by the intruder aircraft’s position, altitude
relative to own aircraft (“high”, “low”, or “same altitude”), and distance from own
aircraft; e.g. “traffic, 12 o’clock, high, 3 miles”.
1.5 SELF-TEST
The GTS 8XX automatically performs a self-test upon power up. The self-test
checks internal parameters and calibrates components of the GTS 8XX. The self-test
can also be initiated by the user during normal operation.
Check for the following test criteria on the Traffic Page during power-up:
• If the GTS 8XX passes the power-up test; and the aircraft both has a squat
switch and is on the ground, the Standby Screen is displayed (Figure 2).
• If the GTS 8XX passes the power-up test and the aircraft both has a squat
switch and is airborne, the Traffic Page is displayed on the 6-nm display range
and in the normal altitude display mode.
• If the GTS 8XX passes the power-up test and the aircraft does not have a squat
switch, the Standby Screen is displayed (Figure 2).
• If the GTS 8XX fails the power-up test (as indicated by a FAILED screen),
the GTS 8XX is inoperable, see the GTS 8XX Installation Manual for detailed
information on Failure Response.
NOTE: The FAILED message is displayed when the system detects an error
that prohibits further traffic display operation.
NOTE: When the system is in standby, the GTS 8XX does not transmit,
interrogate, or track intruder aircraft.
400/500 Pilot’s Guide Addendum for GTS 8XX Interface
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GTS 8XX Interface