Raymarine DSM25 Specifications download pdf (Page 23)

Chapter 3: Using the Sounder Module

3.1 Introduction

The standard fishfinder image is an historical, scrolling bottom graph at an

automatically selected range and frequency. Various functions are provided to

improve the underwater view, select what is displayed and sound an alarm

including:

• Change the range (Range)

• Shift the selected viewing range (Range Shift)

• View a zoomed area (Zoom)

• Flatten the bottom image to help separate fish from the bottom (Bottom

Lock)

• Show a “real time” image of fish and bottom structure directly below the

transducer (A-Scope)

• Change the size of the depth digit

• Isolate bottom fish using White Line and Bottom Fill

• Pause the scrolling image

• Set the frequency

• Manually adjust the sensitivity, color gain and time varied gain settings

• Use waypoints to mark positions

• Use fishfinder alarms (fish, depth or water temperature)

D7935-1

ZOOM

BOTTOM

LOCK

A-SCOPE PRESENTATION

FISHFINDER

SETTINGS

81254.book Page 23 Monday, March 6, 2006 2:29 PM

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Raymarine DSM25 Specifications Page 23