Page 2-2
500W Series Installation Manual
Rev. D
190-00357-02
2.2.3
IFR VOR/LOC/GS Installation
The minimum GNS 530W installation requires the following items for an IFR VOR/LOC/GS
installation:
•
GNS 530W (installed in the aircraft manufacturer approved location)
•
GPS antenna, VOR/LOC antenna, glideslope antenna, and COM antenna.
•
An External CDI/HSI indicator must be installed in the pilot’s primary field-of-view (or in the
aircraft manufacturer approved mounting location). The indicator must have a vertical deviation
indicator for glideslope and VNAV operations/approaches.
•
Any annunciation required for Source Selection or IFR GPS Navigation must meet the
acceptable field-of-view requirements as noted in Section 2.5.1.
2.3 External
Sensors
When the 500W Series unit is installed with external sensors, these sensors must be installed in
accordance with the manufacturer's data. This manual does not provide information for the installation of
specific external sensors.
The 500W Series unit can accept data from multiple altitude, heading, and baro correction sources. If
multiple sources are used, the 500W Series unit will accept data as described below.
NOTE
Barometric altitude is not required by the 500W Series unit to meet the requirements of
TSO C146a.
2.3.1
Multiple Uncorrected Pressure Altitude Sources
The 500W Series unit can accept altitude from a Gray Code or RS-232 altitude encoder, fuel/air data
computer (FADC), ARINC 429 air data computer (ADC), ARINC 429 EFIS, and ARINC 429 traffic
advisory system.
If multiple sources of altitude data are supplied to the GPS 500W/GNS 530W, only valid data from the
highest priority source is used (input priority cannot be configured). If the highest priority source
becomes unavailable, data is taken from the next-highest priority source. The priorities of the altitude
sources are as follows (from highest to lowest):
1.
ARINC 429 ADC
2.
ARINC 429 EFIS
3.
ARINC 429 Traffic Advisory System
4.
RS-232 FADC
5.
RS-232 Altitude Encoder
6.
Parallel Altitude Encoder (Gray Code)
2.3.2
Multiple Baro-Corrected Altitude Sources
The 500W Series unit can accept baro-corrected altitude from an ARINC 429 ADC, ARINC 429 EFIS,
RS-232 FADC, and GTX 33/330 transponder.
If multiple sources of baro-corrected altitude data are supplied to the GPS 500W/GNS 530W, only valid
data from the highest priority source is used. If the highest priority source becomes unavailable, data is
taken from the next-highest priority source. The priorities of the baro-corrected altitude sources are as
follows (from highest to lowest):
Summary of Contents for GNS 530W
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