Radar Operation--------------- 1. Master Battery Power must be ON before gauge will operate. 2. When battery power is turned ON and aircraft is on the ground, radar will enter CAUTION mode. Orange light will illuminate. The light is a safety warning not to place radar in active mode if near buildings or ground personnel. 3. CAUTION light is lit whenever squat switches are activated (weight is on the landing gear struts). 2. Power Button on gauge must be pressed ON to place radar in active mode. Default range is 20nm. 3. Gauge is normally placed in active mode while taxiing to runway for takeoff. 4. Active mode is normally turned OFF after landing and after turning onto taxiway. 5. Radar beam scans for targets 45-degrees left and right of aircraft nose. 6. The screen scan is ON by default. It can be turned ON/OFF by pressing the round button with the vertical white stripe (right side of gauge). 7. Green buttons (GAIN) will limit which ground targets will be shown on screen. These buttons can help minimize screen clutter. One, two, or three buttons can be ON/OFF in any combination simultaneously. 8. "A" button will echo airports. These are shown in magenta. 9. "V" button will echo VORs. These are shown in yellow. 10. "N" button will echo NDBs. These are shown in green. 11. When applicable, borders will be echoed in magenta. 12. The triangular button below the screen will display the nautical mile scale when pressed. The marker values displayed are dependent upon the range that is currently active. This scale will assist in determining target distance more accurately. 13. The mileage scale can be kept on screen by first pressing the triangular button. While keeping the mouse button down, move the mouse cursor off the triangular button. The mileage scale will remain active until triangular button is clicked again with mouse. 13. Pressing the radar screen near the center will activate the target identification mode. The screen blips will present their IDs according to the GAIN setting in use. Terrain display will also switch to mapping mode. 14. When activating the target ID mode, the mileage scale can be displayed by keeping mouse button pressed while sliding cursor to the triangular mileage button. Then, that button can be pressed to display the nm scale while allowing IDs to remain visible. The target ID mode will remain active until screen is clicked again with mouse. 15. When in target ID mode, airport dots denote the centers of airports. 16. Distances are measured from the nose of the aircraft. This is represented on the radar screen by the protrusion at the bottom center of the screen. 17. A green cursor can be displayed on screen by pressing either the left or right arrow-buttons (right side of gauge). The left arrow will move the cursor in the left half of the screen to 0, 10, 20, 30, 40 degrees. These positions will be repeated if button continues to be pressed. 18. The right arrow displays the cursor in the right half of the screen and operates in similar fashion. 19. The CSR button will turn off the cursor mode. 20. Cursors are useful in approaches. They are used to orient the heading of the runway to the heading of the aircraft as it nears the vicinity of the airport. The cursor indicates when to turn onto the final leg much like an ILS beam. See the illustrated tutorial, RadarApproaches.doc, included with this archive.