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Chapter 13 Specification
13-2
13.1.3. JLN-741A
Water speed measuring system
Dual – beam pulse Doppler system
Operation frequency
2 MHz
Fore/after speed measurement scale
-10.00 to +40.00 kn
No. of digits displayed
Fixed 4 or 3 digits selectable
Minimum digital display unit
0.01 kn or 0.1 kn selectable
Sailing display range
0 to 999999.99NM
Water speed measurable depth
3.0 m deeper than the transducer surface
Ship speed accuracy
1 % of the speed of the ship, or 0.1 kn whichever is
greater
Total distance accuracy
1% of the distance run by the ship in 1h or 0.1
nautical miles in each hour whichever is greater
Power consumption
20 W 30VA (for 100VAC)
20 W 75VA (for 230VAC)
13.1.4. JLN-741N
Water speed measuring system
Dual – beam pulse Doppler system
Operation frequency
2 MHz
Fore/after speed measurement scale
-10.00 to +40.00 kn
No. of digits displayed
Fixed 4 or 3 digits selectable
Minimum digital display unit
0.01 kn or 0.1 kn selectable
Minimum analog display unit
Scale: 0.5 kn units
Value: 5.0 kn units
Sailing display range
0 to 99999.99NM
Water speed measurable depth
3.0 m deeper than the transducer surface
Ship speed accuracy
1 % of the speed of the ship, or 0.1 kn whichever is
greater
Total distance accuracy
1% of the distance run by the ship in 1h or 0.1
nautical miles in each hour whichever is greater
Power consumption
20 W 25VA (for 100VAC)
20 W 75VA (for 230VAC)
Summary of Contents for JLN-740A
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Page 54: ...Chapter 1 Outline of the Equipment 1 22 This page intentionally left blank...
Page 60: ...Chapter 2 Function of Each Components 2 6 This page intentionally left blank...
Page 98: ...Chapter 5 Operation Method JLN 740N 741N 5 8 This page intentionally left blank...
Page 122: ...Chapter 6 Setting by Using Menus JLN 740N 741N 6 24 This page intentionally left blank...
Page 150: ...Chapter 9 Installation Method 9 8 This page intentionally left blank...
Page 156: ...Chapter 10 Maintenance and Inspection 10 6 This page intentionally left blank...
Page 160: ...Chapter 12 Disposal 12 2 This page intentionally left blank...
Page 206: ...Appendix A Menu list A 24 This page intentionally left blank...
Page 209: ...B 3 Appendix B Installation Drawings APP B AC power rectifier NBA 5143 Mass 3 5kg...
Page 212: ...Appendix B Installation Drawings B 6 JLN 740N 741N Main Display NWZ 4640...
Page 213: ...B 7 Appendix B Installation Drawings APP B External buzzer CGC 300B Mass 0 5 kg...
Page 216: ...Appendix B Installation Drawings B 10 MID NWZ 4610 Optional...
Page 230: ...Appendix D Spare Parts List D 2 This page intentionally left blank...
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