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1.5 Matching Box
The matching box should be selected depending on the transducer type;
• 50B-6B transducer: MB-502
• 200B-8B transducer: MB-504
Fasten the matching box with four Trapping screws (6x20: local supply). Compass safe
distances are as follows; standard compass: 0.50 m, Steering compass: 0.40 m.
1.6 Digital Depth Indicator FE-720 (option)
The indicator can be installed on a tabletop, on the overhead. Refer to outline drawings at the
end of this manual for installation instructions. When selecting a mounting location, keep in mind
the following points:
• Locate the unit away from exhaust pipes and vents.
• The mounting location should be well ventilated.
• Mount the unit where shock and vibration are minimal.
• Locate the unit away from equipment which generates electromagnetic fields such as a
motor or generator.
• Allow sufficient maintenance space at the sides and rear of the unit and leave sufficient slack
in cables, to facilitate maintenance and servicing.
• Observe the following compass safe distances to prevent deviation of a magnetic compass.
Standard compass: 0.50 m, Steering compass: 0.40 m.
1. Fasten the hanger with four self-tapping screws (5x20).
2. Fasten the digital depth indicator to the hanger with two knobs.
Tabletop
Overhead
■ Flush mounting
There are two types of flush mount kits, F type and S type. For details, see the outline diagrams
at the back of this manual.