Furuno 841 manuals

Furuno 841 User Manual (64 pages)

Brand: Furuno | Category: Boating Accessories | Size: 1.46 MB |

English

Table of contents

MARINE RADAR

1

Printed in Japan

2

SAFETY INFORMATION

3

TABLE OF CONTENTS

4

FOREWORD

5

SPECIFICATIONS–

6

MODEL 821

6

MODEL 841

7

Display Unit

8

Interface NMEA

9

(MODEL 821/841)

9

CONFIGURATION OF

11

MODEL 821/841

11

1. PRINCIPLE OF

12

OPERATION

12

Figure 1-1 How radar works

13

2. OPERATION

14

2.3 Turning the Radar On and

15

19 7

16

2.8 Adjusting GAIN, STC, A/C

17

RAIN and FTC

17

1.5

18

2.11 Measuring the Bearing

19

2.10 Measuring the Range

19

2.12 Menu Operation

20

Table 1-1 Menu description

21

2.13 Selecting the Display

22

2.14 The Window Display

23

2.16 Guard Alarm

24

2.17 Suppressing Radar

25

Interference

25

2.18 Suppressing Noise

26

2.19 Selecting Pulselength

26

2.21 Echo Trails

27

2.22 The Navigation Data

27

2.23 Echo Stretch (magnifying

28

2.24 Selecting Unit of

29

Measurement for Range

29

2.25 Selecting Bearing

29

Reference

29

2.26 Watchman

29

2.27 Erasing the Heading

30

2.28 Deselecting Ranges

30

2.29 Displaying Navigation

30

Data During Stand-by

30

3. INTERPRETING

32

THE DISPLAY

32

3.3 Range Resolution

33

3.4 Bearing Resolution

33

3.5 False Echoes

33

Indirect echoes

34

Side-lobe echoes

34

3.6 Nautical Chart and Radar

35

4. MAINTENANCE &

36

TROUBLESHOOTING

36

4.2 Preventative Maintenance

37

4.3 Replacing the Fuse

37

4.4 Troubleshooting

38

4.5 Self Test

39

5. INSTALLATION

40

Ship's

43

5.2 Display Unit Installation

47

236(9.3")

48

Connections

49

Navigation aid, video sounder

50

Heading Sensor Connection

50

5.3 Installation Check List

51

Procedure

52

5.6 Entering Initial Settings

53

5.8 Sweep Timing

54

5.9 Closing the Installation

54

5.10 Signal cable connection

55

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