JRC JLN-550 -, Instruction Manual

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2 1. Introduction
1.2 Features
JLN-550 Doppler Sonar has the following features:
1) It can measure the ground speed within the depth range of approximately 2 meters through
approximately 250 meters.
2) The water speed is measured simultaneously with ground speed.
3) Compact transducers.
4) High-recognition Main display using large size LED.
5) Supper-bright-LED units for the wing display which are easy to read even in direct sunlight.
6) Confirms to the following standards: IMO A.824(19), as amended by MSC.96(72),
IMOA.694(17), IEC 62288:2014 IEC 61023:2007, IEC 60945:2002, IEC 61162-1:2016