Raymarine L470 instruction manual Setup Instructions

	shown using a more solid area of black or gray. This
	feature helps to show the difference between the strong
	echo from the bottom and the weaker echoes from fish or
	weeds near the bottom. The image shown in Fig. 3-4 is
	presented with the White Line feature turned on.
VRM	“VRM” means “Variable Range Marker.” On this unit, the
	VRM feature offers a way of finding the depth of an object
	on the display. When used with the FishFinder Page, the
	VRM feature creates a horizontal line across the display.
	Using the < and V arrows on the Page Control Pad, you
	can move this line up or down on the display. As the line
	moves, a number shows the depth indicated by the line. By
	moving the line so that it covers a particular target on the
	display, you can find the depth of that target. When the
	Bottom Lock Mode is turned on, the VRM line measures a
	distance up from the bottom. When the optional Sidelooker
	Mode is in use, there may be two vertical VRM lines - one
	to either side of the centerline. You can move these lines
	toward or away from the centerline using the < and V
	controls on the Page Control Pad. Keep in mind that if
	Zoom is set to Manual, the VRM on the FishFinder Page is
	linked to the Zoom adjustment. That is, they are adjusted
	together using the < and V controls.
Sidelooker	This item is used with the optional “Sidelooker” transducer.
	This type of transducer sends sound waves out to the sides
	of the boat. See Fig. 3-9. If you have installed this
	transducer, use this entry in the System Setup Menu to turn
	on the Sidelooker feature.
Speed Cal	This unit can detect and display the speed of the boat
	through the water. It also uses the speed information to
	calculate the distance traveled (the “log”). The item for
	Speed Cal allows you to adjust the speed reading to make
	it match your actual speed through the water. It presents a
	reading in percentage points. A reading of 100% means
	the speed readings from the factory default calibration are
	accurate, and the unit does not need any correction. If the
66	Setup Instructions