Garmin GTX 32 Instrukcja instalacji - Strona 33

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4.4.1 RS-232 Serial Data Electrical Characteristics

The GTX 32 can be configured to include GPS, Altitude, and Airdata data inputs on two RS-232 input

lines. Altitude data supplied to the GTX 32 can be output to the GNS 480 (CNX80) on an RS-232 output

line.

Refer to Figure C-3 (of this document) and the GDL 90 Installation Manual 560-1049-02 for information

when connecting to a GDL 90.

Pin Name

RS-232 OUT 1

RS-232 OUT 2

RS-232 IN 1

RS-232 IN 2

The RS-232 outputs conform to EIA Standard RS-232C with an output voltage swing of at least ±5 V

when driving a standard RS-232 load. Refer to Appendix C for RS-232 serial data interconnect.

4.5

RS-232 Input/Output, Software Update Connections

When the GTX 32 is installed in a system other than a Garmin Integrated Flight Deck system an optional

RS-232 serial data connector should be installed in the aircraft for future software upgrades, negating the

need to remove the transponder from the aircraft. The connector can be mounted anywhere convenient

for access, such as under the instrument panel, on a remote avionics shelf next to the unit or in the

instrument panel itself. Be sure to label the connector for Software Update. Do not include the Test

Mode Select switch in the aircraft. See Figure 4-2 for software update connections.

If the GTX 32 installation interfaces with a GNS 480 (CNX80) in the aircraft, the GNS 480 (CNX80)

must be turned off during GTX 32 software upload, due to loading of RS-232 port 1.

GTX 32 Installation Manual

190-00303-60

Table 4-5. RS-232 Input/Output Pin Assignments

Figure 4-2. GTX 32 Software Update Connections

Connector

P3271

Revision F

I/O

Out

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