Garmin GTX 330, GTXTM 330D TRANSPONDER INSTALLATION MANUAL
Brand: Garmin, Pages: 71
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Page 5-4 GTX 330 Installation Manual
5.1.3 Function Display
PRESSURE ALTDisplays the altitude data supplied to the GTX 330 in feet, hundreds of
feet (i.e., flight level), or meters, depending on configuration.
FLIGHT TIMEDisplays the Flight Time, controlled by the START/STOP key or by one
of four airborne sources (squat switch, GPS ground speed recognition,
airdata airspeed recognition or altitude increase) as configured during
installation. The timer begins when the GTX 330 determines that the
aircraft is airborne.
ALTITUDE MONITORControlled by START/STOP key. Activates a voice alarm and warning
annunciator when altitude limit is exceeded.
OAT/DALTDisplayed when the GTX 330 is configured with temperature input.
Displays Outside Air Temperature and Density Altitude.
COUNT UP TIMERControlled by START/STOP and CLR keys.
COUNT DOWN TIMERControlled by START/STOP, CLR, and CRSR keys. The initial Count
Down time is entered with the 0 – 9 keys.
CONTRASTThis page is only displayed if manual contrast mode is selected in
Configuration Mode. Contrast is controlled by the 8 and 9 keys.
DISPLAYThis page is only displayed if manual backlighting mode is selected in
Configuration Mode. Backlighting is controlled by the 8 and 9 keys.
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GTX 330 Installation Manual Page 5-5
5.2 Configuration Pages
The configuration descriptions given in this section reflect
software version 3.05.
Holding down the FUNC key and pressing the ON key provides access to the configuration pages. The
FUNC key sequences forward through the configuration pages. The START/STOP key reverses through
the pages, stopping at the Menu page. The CRSR key highlights selectable fields on each page. When a
field is highlighted, the 0 – 9 keys enter numeric data and the 8 or 9 keys move through list selections.
Press the CRSR key to accept changes. When a field is highlighted, pressing the FUNC key moves to the
next configuration page without saving the changes.
Changes made through the configuration pages are stored in EEPROM memory. To exit the
configuration pages, turn the power off. Then turn on again (without holding the FUNC key) for normal
The configuration page sequence is as follows (menu categories are listed in parentheses):
•‘Jump To’ Menu
•Audio and Messages #1
•Audio and Messages #2
•ARINC 429 Input #1 (First I/O Configuration page)
•ARINC 429 Input #2 (Second I/O Configuration page)
•ARINC 429 Output
•RS-232 Input Output
•Operation Configuration #1 (First Aircraft Configuration page)
•Operation Configuration #2 (Second Aircraft Configuration page)
•Gray Code Input
•External Switch State
•RS-232 Input Display
•ARINC 429 Input Display #1
•ARINC 429 Input Display #2
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Page 5-6 GTX 330 Installation Manual
5.2.1 Configuration Menu Page
The JUMP TO menu page provides the capability to select a configuration mode starting page without
having to step through all of the pages. Press the CRSR key and sequence through to the desired section
with the 8 and 9 keys. Jump to the selection by pressing the CRSR key again with the desired selection
The FUNC key steps to the next configuration page, after which the START/STOP key reverses until
stopping at the JUMP TO menu page.
DIAGNOSTICSJumps to Gray Code Input page.
DISPLAY/AUDIOJumps to Audio Volume page.
I/O CONFIGJumps to ARINC 429 INPUT #1 page.
ACFT CONFIGJumps to Operation Configuration #1 page.
CONFIGURATION MENU Page
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GTX 330 Installation Manual Page 5-7
5.2.2 Audio Mode Pages
VOICE and VOLUME
Select desired VOICE. The choice of OFF is not available for
traffic (TIS) audio. Make sure the volume level is sufficient for
the aircraft environment involved.
Message is used as a test function only. Message 0 is a continuous tone. Message 1 is a short tone and 2
through5 are voice messages. Choose each selection to listen to the message.
VOICE (MALE/FEMALE)Sets the voice to male or female. Default is male voice.
VOLUMEVolume is adjusted from 0 (default) to maximum with the 8 or 9 key.
MESSAGE (0-9)Selected audio tones and messages:
0 = Toggles a continuous tone on and off.
1 = Attention Tone, precedes voice messages to attract the pilot's attention.
2 = "Leaving Altitude,” when altitude monitor is active and the altitude
deviation is exceeded.
3 = "Traffic,” when a TIS traffic alert is received (similar to a "Traffic
Advisory" in TCAS terms).
4 = "Timer Expired,” when the countdown timer expires.
5 = "Traffic Not Available,” when TIS service is not available or out of
range of an operating TIS Mode S site.
6 through 9 are not used at this time.
ALTITUDE MONITOROff, tone or message
COUNT DOWN TIMEROff, tone or message
PAGE CHANGEEnables/Disables Altitude Monitor sub page when altitude deviation is
5.2.3 Traffic Information Page
Sets the Traffic Messages to either Tone or Message. Traffic Information Service (TIS) provides
notification of close proximity traffic.
AUDIO MODE (First) Page
AUDIO MODE (Second) Page
TRAFFIC INFORMATION Page
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Page 5-8 GTX 330 Installation Manual
5.2.4 Display Mode Page
AUTO (Automatic)DEFAULT. Display automatically changes between Positive mode
(during the day) and Negative mode (at night), depending on ambient
light level received by the photocell.
NGTV (Negative)Display always has light characters on a black background, regardless
of ambient lighting.
PSTV (Positive)Display always has black characters on a light background, regardless
of ambient lighting.
Sets the ambient light level for AUTO mode to change between negative and positive display. The higher
the number, the brighter the ambient light level to change over. This field has a range of 0 (zero) to 99,
with the default set to 75.
5.2.5 Display Backlight Page
AUTO (Automatic)DEFAULT. Display backlighting is automatically controlled, based
on the parameters entered on this configuration page. When AUTO is
selected, the DISPLAY page does not appear to the pilot.
MAN (Manual)Display backlighting is controlled manually by the pilot on the
GTX 330 DISPLAY page. No backlight parameters can be entered
when the manual mode is selected.
Shows the current level of display backlighting, based on the lighting input source (lighting bus voltage,
or the ambient light if the source is PHOTO) and the settings on this configuration page. This field has a
range of 0 (zero) to 999. The level is set by pressing the 8 and 9 keys when MAN mode is selected.
When in AUTO mode, the field is for display only.
RSP TIME (Response Time)
Sets the speed with which the brightness responds to ambient light changes (only for AUTO backlight
mode). The higher the number, the slower the display responds. This field has a range of 0 to 7, with the
default set to 4.
DISPLAY MODE Page
DISPLAY BACKLIGHT Page