Garmin G1000 Manual

							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.