Garmin International Inc 0037600 Manual De Usuario
Preliminary
GTX 327 Installation Manual
Page 8
190-00187-02
Rev 1
2.4
GTX 327 INSTALLATION
NOTES
Avoid installing the unit near heat sources. If this is not possible, ensure that additional cooling
is provided. Allow adequate space for installation of cables and connectors. The installer will
supply and fabricate all of the cables. All wiring must be in accordance with FAA
AC 43.13-2A.
is provided. Allow adequate space for installation of cables and connectors. The installer will
supply and fabricate all of the cables. All wiring must be in accordance with FAA
AC 43.13-2A.
A.
Assemble the connector/rack kit according to figure B-2. Install the rack assembly according
to the dimensions given in figure B-1. Mounting brackets are not supplied due to the wide
range of mounting configurations available. Suitable mounting brackets may be fabricated
from sheet metal or angle stock. To insure a sturdy mount, rear support for the unit should
be provided.
to the dimensions given in figure B-1. Mounting brackets are not supplied due to the wide
range of mounting configurations available. Suitable mounting brackets may be fabricated
from sheet metal or angle stock. To insure a sturdy mount, rear support for the unit should
be provided.
B.
Looking at the bottom of the transponder, make sure the front lobe of the hold down device
is in a vertical position. This can be accomplished by using a 3/32” Allen wrench through
the face plate.
is in a vertical position. This can be accomplished by using a 3/32” Allen wrench through
the face plate.
C.
Slide the unit into the rack until the front lobe of the unit touches the rack. Guide pins on the
back plate will help in the proper alignment of the unit in the rack.
back plate will help in the proper alignment of the unit in the rack.
D.
Turn the Allen wrench clockwise until unit is secured in the rack. Continue turning until
tight. Do not overtighten the screw.
tight. Do not overtighten the screw.
E.
To remove the unit from the rack, turn the 3/32” Allen wrench counterclockwise until it
disengages from the rack.
disengages from the rack.
2.5
COOLING AIR
The GTX 327 meets all TSO requirements without forced air-cooling. However Garmin recommends forced
air-cooling for all products to increase the long-term reliability. The GTX 327 was designed to handle a
constant 450 PRF, with short periods of 1200 PRF. Rate limit is set at 1200PRF. A typical radar site would
interrogate the transponder once every 5 to 10 seconds for approximately 100 msec at a 400 PRF rate. In
very high traffic areas with multiple ground stations and TCAS traffic it is possible to have long term PRF
rates above 450 PRF. The GTX 327 measures the unit temperature and without force air-cooling the reply
rate will be reduced to protect the transmitter from overheating.
air-cooling for all products to increase the long-term reliability. The GTX 327 was designed to handle a
constant 450 PRF, with short periods of 1200 PRF. Rate limit is set at 1200PRF. A typical radar site would
interrogate the transponder once every 5 to 10 seconds for approximately 100 msec at a 400 PRF rate. In
very high traffic areas with multiple ground stations and TCAS traffic it is possible to have long term PRF
rates above 450 PRF. The GTX 327 measures the unit temperature and without force air-cooling the reply
rate will be reduced to protect the transmitter from overheating.
2.6
ELECTRICAL CONNECTIONS
All electrical connections, except for the antenna, are made through a single, 25 pin D connector. Figure 2-1
defines the electrical characteristics of all input and output signals and identifies the cable requirements for
each signal. Required connector and associated hardware are supplied in the installation kit
(P/N 010-10216-00). See figures B-3 and B-4 for interconnect wiring diagrams.
defines the electrical characteristics of all input and output signals and identifies the cable requirements for
each signal. Required connector and associated hardware are supplied in the installation kit
(P/N 010-10216-00). See figures B-3 and B-4 for interconnect wiring diagrams.