Garmin GNS 480, Инструкция по установке

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General Information
1-16 560-0982-01 Rev L GNS 480 (CNX80) Installation Manual
1.4.3 TSO Deviations
TSO/ETSO/
RTCA Deviation
TSO-C146a
RTCA/DO-
229C
1. Deviation was granted to TSO-C146a labeling standard to allow the primary navigation
display button to be labeled “MAP” instead of “NAV”.
GNS 480 (CNX80) software version 2.0 added a “NAV” button to the user interface, thus
removing the deviation from TSO-C146a for units with software version 2.0 or later.
TSO-C146a 2. Deviation was granted to TSO-C146a name plate requirement to allow use of Serial
Number in place of Date of Manufacture.
TSO-C146a 3. A deviation was granted from TSO-C146a from RTCA/DO-229C paragraphs 2.1.1.10,
2.1.1.7, 2.1.1.8.1, 2.1.1.8.2, 2.1.1.9, 2.1.2.1, 2.1.3.1, 2.1.4.1.4, 2.1.4.1.5 and 2.1.5.1 in the
form of an operational limitation to achieve an equivalent level of safety. The operational
limitation is based on:
a. The ability to use antennas that may not meet the minimum gain performance
requirements of DO-228.
b. The ability to mitigate the effects of the different gain characteristics of those
antennas by increasing the effective mask angel through operational limitations.
c. The ability to further increase the effective mask angel, through operational
limitations, to a level commensurate with test conditions used in the original
TSO qualification tests.
d. The ability to use -128 dBmic as the minimum GPS satellite signal-in-space for
the purpose of assessing the operational limitation.
e. The ability to use -128 dBmic as the minimum SBAS sateillite signal-in-space for
the purpose of assessing the operational limitation.
The operational limitation applies to the GNS 480 (CNX80) with GPS software version
2.4 or earlier, or GNS 480 (CNX80) installations with certain models of GPS/WAAS
antennas identified in Section 1.3.10.2 of this manual.
This deviation is removed if the configuration complies with Table 1-1.
TSO-C146a 4. A deviation was granted to TSO-C146a from RTCA/DO-229C paragraph 2.1.1.9 to use
a 20 second satellite reacquisition time instead of a 10 second reacquisition time. This
deviation applies to configurations with GPS software version 3.x or later.
1.4.4 FCC Grant of Equipment Authorization
•
FCC ID: EOJ52ICOM96
1.4.5 GNS 480 STC Authorization
Refer to Garmin AT document 560-0988-00 for data regarding GNS 480 STC authorization. This
document is included in the Product CD. Select ‘STC Data’ from the main menu.