JRC JLN-900 - Calibration and Sea Acceptance Test. Njc-80 Sig.processor, Transducer (Tru) and Optional Sig.distributor

13-2
JLN-900 Speed Log
Calibration and Sea Acceptance test. NJC-80 Sig.Processor, Transducer (TRU)
and optional Sig.Distributor
Contents
1 Scope 13-3
2 Equipment needed 13-3
3 Test procedure for bottom track (ground speed) 13-3
3.1 SOG Transducer angle calibration..............................................................................13-3
3.2 Speed Calibration (SOG) ....................................................................................................13-4
4 Test procedure for the STW unit, WTU PCB. 13-6
4.1 The boundary layer.....................................................................................................13-6
4.2 Calibration factors STW.............................................................................................13-6
4.2.1 TRU Calibration ............................................................................................13-7
4.2.2 Draught calibration (Single point calibration)...............................................13-7
4.2.3 Speed Depending Calibration (Multiple Point Calibration) ..........................13-8
5 Test procedure for optional Sig.Distributor 13-9
5.1 System signal flow .....................................................................................................13-9
6 Final inspection 13-9
7 SAT protocol 13-10
8 Protocol Multiple point calibration 13-12