Garmin G1000 Manual
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![Page 402
Garmin G1000 Pilot’s Guide for the Socata TBM 850190-00709-04 Rev. A388
HAZARD AVOIDANCE
Vertically scanning a storm cell:
NOTE: Vertical scanning of a storm cell should be done with the aircraft wings \
level to avoid constant
adjustment of the Bearing Line.
1) While in the Horizontal Scan view, select the BRG Softkey. This places the cursor in the BEARING field and
displays the Bearing Line.
If the Bearing Line is not displayed, press the MENU Key and turn the large FMS Knob to select Show...](http://img.usermanuals.tech/thumb/27/79160/w64_g1000-manual-1498126021_d-401.png "Page 402
Garmin G1000 Pilot’s Guide for the Socata TBM 850190-00709-04 Rev. A388
HAZARD AVOIDANCE
Vertically scanning a storm cell:
NOTE: Vertical scanning of a storm cell should be done with the aircraft wings \
level to avoid constant
adjustment of the Bearing Line.
1) While in the Horizontal Scan view, select the BRG Softkey. This places the cursor in the BEARING field and
displays the Bearing Line.
If the Bearing Line is not displayed, press the MENU Key and turn the large FMS Knob to select Show...")
![Page 405
190-00709-04 Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850391
HAZARD AVOIDANCE
Adjusting Gain:
WARNING: Changing the gain in weather mode causes precipitation intensity to be d\
isplayed as a color
not representative of the true intensity. Remember to return the gain setting to Calibrated for viewing the
actual intensity of precipitation.
1) Select the GAIN Softkey to activate the cursor in the GAIN field.
2) Turn the small FMS Knob to adjust the gain for the desirable level. The gain...](http://img.usermanuals.tech/thumb/27/79160/w64_g1000-manual-1498126021_d-404.png "Page 405
190-00709-04 Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850391
HAZARD AVOIDANCE
Adjusting Gain:
WARNING: Changing the gain in weather mode causes precipitation intensity to be d\
isplayed as a color
not representative of the true intensity. Remember to return the gain setting to Calibrated for viewing the
actual intensity of precipitation.
1) Select the GAIN Softkey to activate the cursor in the GAIN field.
2) Turn the small FMS Knob to adjust the gain for the desirable level. The gain...")
190-00709-04 Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850387 HAZARD AVOIDANCE Displaying weather on the Weather Radar Page: 1) Select the Weather Radar Page in the Map Page Group with the FMS Knob. 2) Select the MODE Softkey. 3) While on the ground, select the STANDBY Softkey. A one-minute warm-up period is initiated (countdown is displayed on the screen). After the warm-up is complete, the radar enters the Standby Mode. a) Select the WEATHER Softkey. A confirmation window is displayed. Figure 6-104 Confirming Activating Radar b) Turn the small FMS Knob to highlight YES and press the ENT Key to continue radar activation. OR: If the aircraft is airborne, select the WEATHER Softkey. A one-minute warm-up period is initiated (countdown is displayed on the screen). After the warm-up is complete, the radar begins transmitting. 4) Turn the RANGE Knob to select the desired map range. 5) The horizontal scan is initially displayed (Figure 6-103). If desired, select the VERTICAL Softkey to change to vertical scanning.
Garmin G1000 Pilot’s Guide for the Socata TBM 850190-00709-04 Rev. A388 HAZARD AVOIDANCE Vertically scanning a storm cell: NOTE: Vertical scanning of a storm cell should be done with the aircraft wings \ level to avoid constant adjustment of the Bearing Line. 1) While in the Horizontal Scan view, select the BRG Softkey. This places the cursor in the BEARING field and displays the Bearing Line. If the Bearing Line is not displayed, press the MENU Key and turn the large FMS Knob to select Show Bearing Line. Press the ENT Key. 2) Press the ENT Key. 3) Turn the small FMS Knob to place the Bearing Line on the desired storm cell or other area to be vertically scanned. Figure 6-105 Bearing Line on Horizontal Scan Scan LineBearing Line 4) Select the VERTICAL Softkey. A vertical scan of the selected area is now displayed (Figure 6-106). 5) The small FMS Knob may be used to move the scanned bearing line a few degrees right o\ r left. 6) Turn the RANGE Knob to adjust the range. 7) Press the FMS Knob to remove the cursor. 8) To select a new area to be vertically scanned, select the HORIZON Softkey to return to the Horizontal Scan view and repeat the previous steps. The RANGE Knob can also be used to adjust bearing from left to right.
190-00709-04 Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850389 HAZARD AVOIDANCE Figure 6-106 Vertical Scan Display aDjUsting antenna tilt angle In order to make an accurate interpretation of a storm cell, the radar beam should be pointed at the wet part of the weather cell to record the proper rainfall intensity (color level). The ideal aiming point is just below the freezing level of the storm. The best way to find this point is to use the Vertical Scan feature. The antenna tilt angle can be centered on the strongest return area in the vertical scan to get a more accurate view of the coverage and intensity of the target in the horizontal scan. Adjusting antenna tilt on the Horizontal Scan display: 1) Press the FMS Knob to activate the cursor in the TILT field. 2) Turn the small FMS Knob to select the desired antenna tilt angle. 3) Press the ENT Key. 4) Press the FMS Knob to remove the cursor. The RANGE Knob can also be used to adjust tilt up and down.
Garmin G1000 Pilot’s Guide for the Socata TBM 850190-00709-04 Rev. A390 HAZARD AVOIDANCE Adjusting antenna tilt on the Vertical Scan display: 1) Select the TILT Softkey to activate the cursor in the TILT field and display the Tilt Line. If the Tilt Line is not displayed, press the MENU Key and turn the large FMS Knob to select Show Tilt Line. Press the ENT Key. 2) Turn the small FMS Knob to adjust the antenna tilt angle. The selected tilt angle is implemented when Horizontal Scan is again selected. The RANGE Knob can also be used to adjust tilt. Figure 6-107 Adjusting Tilt on Vertical Scan Display Scan Line Tilt Line
190-00709-04 Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850391 HAZARD AVOIDANCE Adjusting Gain: WARNING: Changing the gain in weather mode causes precipitation intensity to be d\ isplayed as a color not representative of the true intensity. Remember to return the gain setting to Calibrated for viewing the actual intensity of precipitation. 1) Select the GAIN Softkey to activate the cursor in the GAIN field. 2) Turn the small FMS Knob to adjust the gain for the desirable level. The gain setting is visible in the GAIN field as a movable horizontal bar in a flashing box. The line pointer is a reference depicting the calibrated position. 3) Press the FMS Knob to remove the cursor. 4) Select the GAIN Softkey again to recalibrate the gain. CALIBRATED is displayed in the GAIN field. Calibrated Gain Manual Gain Set Below Calibrated Figure 6-108 Gain Calibration
Garmin G1000 Pilot’s Guide for the Socata TBM 850190-00709-04 Rev. A392 HAZARD AVOIDANCE Sector Scan: 1) While in horizontal scan mode, select the BRG Softkey to display the Bearing Line and place the cursor in the BEARING field. If the Bearing Line is not displayed, press the MENU Key and turn the large FMS Knob to select Show Bearing Line. 2) Press the ENT Key. Figure 6-109 Selecting Sector Scan Position 3) Turn the small FMS Knob to place the Bearing Line in the desired position. The location of the Bearing Line becomes the center point of the Sector Scan. 4) Turn the large FMS Knob to place the cursor in the SECTOR SCAN field. 5) Turn the small FMS Knob to select FULL, 60˚, 40˚, or 20˚ scan. 6) If desired, readjust the Bearing Line as discussed previously to change the center of the Sector Scan. 7) Select the BRG Softkey again to remove the Bearing Line and cursor. The bearing reference is also reset to 0º.
190-00709-04 Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850393 HAZARD AVOIDANCE Figure 6-110 40˚ Sector Scan Antenna Stabilization: 1) To activate or deactivate the antenna stabilization, select the MODE Softkey. 2) Select the STAB ON Softkey to activate antenna stabilization or select the STAB OFF Softkey to deactivate. The current stabilization condition is shown in the upper right of the weath\ er radar display.
Garmin G1000 Pilot’s Guide for the Socata TBM 850190-00709-04 Rev. A394 HAZARD AVOIDANCE WeatheR attenU ateD cOlOR highlight (Watch®) While in horizontal scan mode, this feature can be used as a tool to determine areas of possible inaccuracies in displayed intensity due to weakening of the radar energy. This weakening is known as attenuation. The radar energy weakens as it passes through areas of intense precipitation, large areas of lesser precipitation, and distance. Issues with the radome also attenuates the radar energy. All these factors have an effect on the return intensity. The more energy that dissipates, the lesser the displayed intensity of the return. Accuracy of the displayed intensity of returns located in the shaded areas are suspect. Make maneuvering decisions with this information in mind. Proper antenna tilt management should still be employed to determine the extent of attenuation in a shaded area. To activate or deactivate the WATCH® feature, select the WATCH Softkey. Horizontal Scan With WATCH®Horizontal Scan Without WATCH® Areas of Attenuated SignalDisplayed intensity is questionable. Potentially stronger than displayed. Figure 6-111 Horizontal Scan Without and With WATCH™
190-00709-04 Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850395 HAZARD AVOIDANCE WeatheR aleR t The Weather Alert feature indicates the presence of heavy precipitation between the ranges of 80 and 320 nm regardless of the currently displayed range. Weather Alert targets appear as red bands along the outer range ring at the approximate azimuth of the detected returns. If a Weather Alert is detected within ±10° of the aircraft heading, an alert is displayed on the PFD in the Messages Window. If the antenna tilt is adjusted too low, a weather alert can be generated by ground returns. To avoid unwanted weather alerts, deselect the WX ALRT Softkey.. Figure 6-112 Weather Alert Indications Weather Alerts To activate or deactivate Weather Alerts, select the WX ALRT Softkey. Activating and deactivating also enables or inhibits the alert on the PFD. Figure 6-113 Weather Alert on PFD
Garmin G1000 Pilot’s Guide for the Socata TBM 850190-00709-04 Rev. A396 HAZARD AVOIDANCE gROUnD maPPing anD inteRPRetatiOn A secondary use of the weather radar system is for the presentation of terrain. This can be a useful tool for verifying aircraft position. A picture of the ground is represented much like a topographical map that can be used as a supplement to the navigation map on the MFD. Ground Map mode uses a different gain range than Weather mode. Different colors are also used to represent the intensity levels. The displayed intensity of ground target returns are defined in the table below. Use of the GAIN and TILT controls helps improve contrast so that specific ground targets can be recognized more easily. As previously discussed, the type and orientation of the target in relation to the aircraft affects the intensity displayed. When the weather radar system is in either the Weather or Ground Map mode, the system automatically switches to Standby mode upon landing. Ground Map Mode ColorIntensity Black0 dB Light blue> 0 dB to < 9 dB Yellow9 dB to < 18 dB Magenta18 dB to < 27 dB Blue27 dB and greater Table 6-11 Ground Target Return Intensity Levels Operation in Ground Map Mode 1) Select the MODE Softkey. 2) Select the GROUND Softkey to place the radar in Ground Map mode. 3) Select the BACK Softkey. 4) Press the FMS Knob to activate the cursor. 5) Turn the large FMS Knob to place the cursor in the TILT field. 6) Adjust the antenna tilt angle by turning the small FMS Knob to display ground returns at the desired distance. 7) Press the FMS Knob to remove the cursor.