Garmin International Inc 0037600 Manual De Usuario
Preliminary
GTX 327 Installation Manual
Page 11
190-00187-02
Rev 1
3.2.1 Function Selection Switches
The function selection switches are:
•
OFF
Turns the GTX 327 off.
•
STBY
Turns the transponder ON in STBY mode or selects STBY mode. When in STBY the
transponder will not reply to any interrogations from the ground radar system. At power
on the last active identification code will be selected.
on the last active identification code will be selected.
•
ON
Turns the transponder ON in Mode A, the identification mode or selects Mode A. At
power on the last active identification code will be selected. In addition to the aircraft’s
identification code, the transponder will also reply to altitude interrogations (mode C) with
signals that do not contain altitude information. The Reply Symbol
identification code, the transponder will also reply to altitude interrogations (mode C) with
signals that do not contain altitude information. The Reply Symbol
"
)
)
)
"
will be
displayed when the transponder replies to ground interrogation.
•
ALT
Turns the transponder on in Mode A and Mode C, or, if already on, selects Mode A and
Mode C. This is the identification and altitude-reporting modes to respond to ATC aircraft
identification interrogations and altitude interrogations with standard pressure altitude
(29.92 inches Hg.) received from an external altitude digital encoder. The ALT position
may be used in aircraft that are not equipped with the optional altitude encoder, however,
the only response will be discreet signals that do not contain altitude information. The
Reply Symbol
identification interrogations and altitude interrogations with standard pressure altitude
(29.92 inches Hg.) received from an external altitude digital encoder. The ALT position
may be used in aircraft that are not equipped with the optional altitude encoder, however,
the only response will be discreet signals that do not contain altitude information. The
Reply Symbol
"
)
)
)
"
will be displayed when the transponder replies to ground
interrogation.
NOTE
Any time the ON or ALT function is selected the transponder becomes an active part of the beacon
system. Select ON or ALT as late as practical prior to takeoff and to OFF or STBY as soon as
practical after landing unless previously changed to STBY at the request of ATC. An optional Squat
Switch can automate transponder control during take off and landing. If installed and configured the
Squat Switch will automatically transition the transponder to the ALT mode at take off. Upon
landing the Squat Switch will automatically transition the transponder to STBY mode after a preset
time delay. This time delay can be selected via a configuration page.
system. Select ON or ALT as late as practical prior to takeoff and to OFF or STBY as soon as
practical after landing unless previously changed to STBY at the request of ATC. An optional Squat
Switch can automate transponder control during take off and landing. If installed and configured the
Squat Switch will automatically transition the transponder to the ALT mode at take off. Upon
landing the Squat Switch will automatically transition the transponder to STBY mode after a preset
time delay. This time delay can be selected via a configuration page.
•
IDENT
On occasion, the controller will request to SQUAWK IDENT. Respond by
momentarily pressing and releasing the IDENT button. Pressing the IDENT button
activates the Special Position Identification (SPI) Pulse for 18 seconds identifying your
transponder return from other aircraft on the controller’s scope. The word IDENT will be
displayed in the upper left corner of the display while the IDENT feature is active.
activates the Special Position Identification (SPI) Pulse for 18 seconds identifying your
transponder return from other aircraft on the controller’s scope. The word IDENT will be
displayed in the upper left corner of the display while the IDENT feature is active.
•
VFR
Programs transponder code to the default VFR code. Default code is programmed on a
configuration page. Pressing the VFR button again will restore the last identification code.