Garmin GPSMAP 1243xsv User Manual

Setting the Keel Offset
You can enter a keel offset to compensate the water depth reading for the transducer installation location. This
allows you to view the depth of the water below the keel or the true depth of the water, depending on your
needs.
If you want to know the water depth below the keel or the lowest point of your boat and the transducer is
installed at the water line or anywhere above the end of the keel, measure the distance from the transducer
location to the keel of the boat.
If you want to know the true water depth and the transducer is installed below the water line, measure the
distance from the bottom of the transducer up to the water line.
NOTE: This option is only available when you have valid depth data.
1 Measure the distance:
• If the transducer is installed at the water line or anywhere above the end of the keel, measure the
distance from the transducer location to the keel of the boat. Enter this value as a positive number.
• If the transducer is installed at the bottom of the keel and you want to know the true depth of the
water, measure the distance from the transducer to the water line. Enter this value in as a negative
number.
2 Complete an action:
• If the transducer is connected to the chartplotter or a sonar module, select Settings > My Vessel > Depth
and Anchoring > Keel Offset.
• If the transducer is connected to the NMEA 2000 network, select Settings > Communications > NMEA
2000 Setup > Device List, select the transducer, and select Review > Keel Offset.
3 Select if the transducer is installed at the water line, or select if the transducer is installed at the
bottom of the keel.
4 Enter the distance measured in step 1.
Device Configuration 173

Garmin GPSMAP 1243xsv Specifications

General

Display Resolution	1280 x 800 pixels
Display Type	WXGA display
Touchscreen	Yes
Keypad	Yes
Water Rating	IPX7
Antenna	Internal or external over NMEA 2000
Receiver	10 Hz
Garmin Marine Network Ports	2
NMEA 2000 Ports	1
NMEA 0183 Input Ports	1
NMEA 0183 Output Ports	1
Wireless Connectivity	Yes
J1939 Connectivity	Yes
BlueChart g3 Charts	Yes
LakeVü g3 Charts	Yes
Waypoints	5, 000
Routes	100
Track Log	50, 000 points; 50 saved tracks
Sonar Capabilities	Yes
CHIRP Sonar	Yes
ClearVü	Yes
SideVü	Yes
Traditional Sonar Frequency	50/77/83/200 kHz
ClearVü/SideVü Frequency	260/455/800 kHz
Weight	5.1 lbs (2.3 kg)
Mounting Options	Flush
Video Input Ports	1 BNC
Accepts Data Cards	microSD card
CHIRP Frequency	Low, High
Transmit Power	500 W (RMS)
Operating Temperature	-15°C to 55°C (5°F to 131°F)
Storage Temperature	-4°F to 158°F (-20° to 70°C)
Power Input	10-32 Vdc