JRC JLN-900 - Technical Specification

3-2
Abstract: Performance, environmental conditions and power requirements for the JLN-900
speed log system
Contents:
1 GENERAL 3-3
2 PERFORMANCE 3-3
2.1 Principle of operation 3-3
2.1.1 STW (Speed Through the Water = relative speed) 3-3
2.1.2 SOG (Speed Over the Ground = true speed) 3-3
2.2 Accuracy of measurement 3-3
2.2.1 STW 3-3
2.2.2 SOG 3-3
2.3 Functional limitations 3-4
2.3.1 STW 3-4
2.3.2 SOG 3-4
3 ENVIRONMENTAL CONDITIONS 3-5
4 INTERFACES 3-5
4.1 Serial interface & sentences 3-5
4.1.1 NQA-4480 Sig.Distributor 3-5
4.1.2 NJC-80 Sig.Processor 3-5
4.1.3 NWW-82 Main Display 3-5
4.2 Relays, opto-couplers and analogue outputs 3-6
5 CALIBRATION 3-6
6 POWER REQUIREMENTS AND DIMENSIONS 3-7
7 LIABILITY 3-7