Garmin GTX 330 Installation Manual

Also see for GTX 330: Pilot's guide addendum Manual Pilot's guide addendum Pilot's guide Pilot's guide addendum

Garmin GTX 330 Installation Manual Manual pdf 43 page image

GTX 330 Installation Manual Page 5-9190-00207-02 Rev EBKLT SRCE (Backlight Source)SELECTION DESCRIPTIONPHOTO (Photocell) DEFAULT. Backlight level is determined by the ambient light levelas measured by the photocell on the GTX 330.14V Backlight level tracks a 14 volt DC aircraft lighting bus.28V Backlight level tracks a 28 volt DC aircraft lighting bus.5V Backlight level tracks a 5 volt DC aircraft lighting bus.NOTEIf a lighting bus (any selection other than PHOTO) is selected, and the lighting bus control isturned to its minimum (daytime) setting, the display brightness tracks the GTX 330 photocell.SLOPE (Auto Only)Sets the sensitivity of the display brightness to changes in the input level. The higher the number, the brighter thedisplay for a given increase in the input level. This field has a range of 0 (zero) to 99, with the default set to 50.OFFSET (Auto Only)Adjusts the lighting level up or down for any given input level. This field has a range of 0 (zero) to 99, and is setto 50 at the factory. This may also be used to match lighting curves with other equipment in the panel.5.2.6 KEY LIGHTING PageThe key lighting mode is always the same as the display backlightmode, so the mode must be changed on the Display Backlightconfiguration page. If the lighting mode is AUTO, then the keylighting parameters can be edited on this page.KEY (Key Lighting)SELECTION DESCRIPTIONAUTO (Automatic) Key lighting is automatically controlled based on the parametersentered on this configuration page.MAN (Manual) Key lighting is controlled manually by the pilot on the GTX 330DISPLAY page.LVL (Level)Shows the current level of key lighting, based on the lighting input source (lighting bus voltage, or the ambientlight if the source is PHOTO) and the settings on this configuration page. This field has a range of 0 (zero) to999, but is not a user-entered field (display only).KEY LIGHTING Page