Furuno FCV-582L manual Automatic Operation, Selecting Picture Advance Speed, How it works

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1.8 Automatic Operation

Automatic operation is useful when you are preoccupied with other tasks and do not have time to adjust the display.

How it works

The automatic function automatically selects the proper gain and range scale according to depth. It works as follows:

The range changes automatically to locate the bottom on the lower half of the screen. It jumps to one step shallower range when bottom echoes reach a halfway point of the full scale from top and to one step deeper range when they come to the lower edge of the scale.

The gain is automatically adjusted to dis- play the bottom echo in reddish-brown (de- fault color arrangement).

Clutter level (on the User menu), which suppresses low level noise, is automatically adjusted.

Two types of automatic modes

Two types of automatic modes are available: cruising and fishing. Cruising is for tracking the bottom; fishing is for searching fish schools. Since cruising uses a higher clutter rejection setting than fishing, it is not recom- mended for fish detection – weak fish echoes may be deleted by clutter rejection.

How to enable automatic operation

1.Push the GAIN control. The auto mode display appears.

AUTO MODE

OFF CRUISING

FISHING

Figure 1-19 Auto mode display

2.Push the GAIN control again to select Cruising or Fishing.

1.9Selecting Picture Advance Speed

The picture advance speed determines how quickly the vertical scan lines run across the screen. When selecting a picture advance speed, keep in mind that a fast advance speed will expand the size of the fish school hori- zontally on the screen and a slow advance speed will contract it.

1.Press the ZOOM and SIG LEV keys to- gether. The following display appears.

ADVANCE

STOP 1/16 1/8 1/4 1/2 1/1

2/1

Figure 1-20 Picture advance

speed selection display

The fractions in the menu denote number of scan lines produced per transmission. For example, 1/8 means one scan line is produced every 8 transmissions. STOP freezes the display and it is convenient for observing an echo.

2.Press the [] or [] key to select speed desired.

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Contents Color LCD Sounder First Edition APR Safety Instructions Table of Contents Features ForewordWord to FCV-582L Owners IiiMenu Tree User MenuSystem Configuration Display UnitPrinciple of Operation Operational Overview Control DescriptionIndications, Markers 22.6 C 12kt NL1 200kTurning On/Off the Power Adjusting Tone and BrillianceSelecting a Display Normal display49.6 28.2Marker-zoom display Dual-frequency displayBottom-zoom display 36.4Bottom-lock display Data displayGraphic display 69.4 mAdjusting the Gain Selecting Display RangeSelecting data or graphic display Basic range selectionHow to enable automatic operation Automatic OperationSelecting Picture Advance Speed How it worksErasing Weak Echoes Measuring Depth32.3 Scope DisplayUser Menu Suppressing Low Level Noise Suppressing InterferenceSelecting Background and Echo Colors Alarms Fine Adjustment of Gain in Dual-Frequency Operation White MarkerDisplaying the Optional Mode Menu Optional ModeSystem Menu System menu 2 description System menu 1 descriptionSystem menu 3 description Demonstration Display Bottom LevelTVG Level Echo OffsetInterpreting the Display Zero LineFish School Echoes Bottom EchoSurface Noise/Aeration Surface noise/aerationMaintenance & Troubleshooting Cleaning the Display UnitTransducer Maintenance CheckingTroubleshooting TroubleshootingTest Test PatternClearing the Memory Clear memory displaySpecifications of Color LCD Sounder Power Supply Index Index-1Index-2