GI 205 Pilot's Guide 306296 Rev 1
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Table of Contents 1. Section 1 – GI 205 Overview............................................................................................................................1 1.1 Introduction..................................................................................................................................................1 1.2 GI 205 Product Description..........................................................................................................................1 1.2.1 Functions.....
Section 1 – GI 205 Overview 1.1 Introduction This manual describes the operation of the Garmin GI 205 Radar Altimeter Indicator (manufactured by SANDIA Aerospace). The GI 205 is designed to operate exclusively with the Garmin GRA 55 or GRA 5500 radar altimeters. 1.2 GI 205 Product Description The GI 205 can be installed as a stand-alone display of radar altitude or in parallel with an integrated avionics suite.
1.2.
Section 2 - Normal Operation 2.1 Initial Power On Upon initial power-on, the unit will display the company logo, software version and software checksum for about 10 seconds and then proceed to the normal display. Illustration 2: Power On Screen 2.2 Pilot Display and Controls The following shows the possible on-screen functions and pilot control during normal operation. Illustration 3: Display Elements 2.2.
2.3 Radar Altitude Current radar altitude is displayed below the “RADAR ALTITUDE” title text. The GI 205 can be configured to display the radar altitude in either feet or in meters. If the GI 205 receives an indication that the unit providing the Radar Altitude has failed, it will display “FAIL” in place of the Radar Altitude value. If the GI 205 receives an indication that the unit providing the Radar Altitude is in self test mode, it will display “TEST” in place of Radar Altitude. 2.
height value will blink for two seconds and then stay highlighted as long as the currently displayed radar altitude is below (or up to 50 ft above) the selected decision height. Illustration 5: Decision Height Highlighted 2.5 Decision Height Alerts The decision height alerts are activated if the currently displayed radar altitude crosses below the set decision height. The alert is annunciated both visually and aurally. The options for the visual alert are described in the above section.
2.7 “ALT1” If connected, when the GRA Altitude Alert Input 1 becomes active, the GI 205 plays the configured aural alert for two seconds and blinks the “ALT1” text at the bottom row of the display for two seconds. The text then stays visible and highlighted as long as the input is active. 2.8 “ALT2” If connected, when the GRA Altitude Alert Input 2 becomes active, the GI 205 plays the configured aural alert for two seconds and blinks the “ALT2” text at the bottom row of the display for two seconds.
The aural alert volume can be set in this configuration page. Turning the rotary encoder changes the volume. For monitoring purposes, the GI 205 plays the aural alert while on this page to help adjust to the desired alert volume. Setting the volume to the minimum setting will completely mute the aural alert. 2.9.3 ALTITUDE UNIT Illustration 8: Altitude Unit Selection The unit of the altitude display can be selected to “FEET” or “METERS” by turning the rotary encoder in this configuration page.
Section 3 – Failure Conditions 3.1 Flash Check The unit continuously checks for any errors in the internal Flash memory. If it encounters an error, the unit will display “EOC CRC FAILED” and will become inoperable. If this occurs, the GI 205 must be returned to the factory for service. 3.2 RAM Check The unit checks for any errors in the internal RAM (random access memory) during unit startup. If it encounters an error, the unit will display “RAM TEST FAILED” and will become inoperable.
