Furuno 841 MARK-2 manual Table of Contents

TABLE OF CONTENTS

FOREWORD	v
SPECIFICATIONS	vii
EQUIPMENT LIST	ix
CONFIGRATION	xi
1. PRINCIPLE OF
OPERATION	1
1.1 What is Radar?	1

1.2How Ships Determined Position

	Before Radar	1
1.3	How Radar Determines Range	1
1.4	How Radar Determines Bearing	1

1.5Radar Wave Speed and Antenna

	Rotation Speed	1
1.6	The Radar Display	1
2. OPERATION
2.1	Control Description	3
2.2	Display Indications and Markers	4
2.3	Turning the Radar On and Off	4
2.4	Transmitting	5
2.5	Selecting the Range	5

2.6Adjusting LCD Backlighting and

Display Tone	5
2.7 Adjusting Control Panel Brilliance ...	5

2.8Adjusting GAIN, STC, A/C RAIN

	and FTC	6
2.9	Tuning the Receiver	7
2.10	Measuring the Range	8
2.11	Measuring the Bearing	8
2.12	Menu Operation	9
2.13	Selecting the Display Mode	11
2.14	The Window Display	12
2.15	Selecting the Presentation Mode ....	12
2.16	Guard Alarm	13
2.17	Suppressing Radar Interference	14
2.18	Suppressing Noise Interference	15
2.19	Selecting Pulselength	15
2.20	Off Centering the Display	15
2.21	Echo Trails	16
2.22	The Navigation Data Display	16
2.23	Echo Stretch	17
2.24	Selecting Unit of Measurement
	for Range	18

2.25	Selecting Bearing Reference	18
2.26	Watchman	18
2.27	Erasing the Heading Marker	19
2.28	Deselecting Ranges	19
2.29	Displaying Navigation During
	Stand-by	19
2.30	Outputting Cursor Position to
	Navigator	20
2.31	Displaying Cursor Position, Range
	and Bearing to Cursor	20
2.32	Visual Alarm Indications	20

3.INTERPRETING THE DISPLAY

3.1The Radar Wave and Radar Horizon21

3.2Target Properties and Radar Wave

	Reflection	21
3.3	Range Resolution	22
3.4	Bearing Resolution	22
3.5	False Echoes	22
3.6	Nautical Chart and Radar Picture ...	24

4.MAINTENANCE & TROUBLESHOOTING

4.1	Safety Information	25
4.2	Preventative Maintenance	26
4.3	Replacing the Fuse	26
4.4	Troubleshooting	27
4.5	Self Test	28
5. INSTALLATION
5.1	Antenna Unit Installation	29
5.2	Display Unit Installation	31
5.3	Installation Check List	35
5.4	Initial Adjustment of Picture	36
5.5	Displaying the Installation Menus ..	36
5.6	Entering Initial Settings	37
5.7	Relative Bearing Alignment	37
5.8	Sweep Timing	37
5.9	Closing the Installation Menus	38

Declaration of Conformity

v