9-4
９.２ Doppler Log
1) Basic
• Operation system : Dual - beam pulse Doppler system
• Operation frequency : 2MHz
• Speed measurement range : –10.0 to +40.0 kn
• Run distance display range : 0 to 99999.99nm
(However, NWW-7 of the option is 0 to 9999.99nm )
• Water depth : Relative speed to water of depth greater than 3 meters below hull bottom
• Speed accuracy : ±1% or ±0.1kn whichever value is greater
• Distance accuracy : ±1% or ±0.1nm in each hour whichever value is greater
• Display : Digital display Speed unit = kn or m/s
: Analog display (option)
• IEC61162-1 input : GPS (for GPS speed display)
(Sentence ; $--RMC, $--RMA, $--VTG)
• IEC61162-1 output : NMEA0183 Ver. 1.5 or 2.3 -------------- 8 circuits
(Sentence ; $VDVBW, $VDVLW)
• Other output : Ship speed ---------------------------------- 2 circuits
DC voltage signal for analog display (-2VDC to +10VDC)
: LOG pulse ---------------------------------- 4 circuits
Opto-coupler signal (200 pulses/nm, 30V, 50mA max)
: LOG signal --------------------------------- 1 circuit
Relay closure signal (200 pulses/nm, 30V, 1A max)
: Slave display signal ----------------------- 2 circuits
: Distance signal ----------------------------- 1 circuit
: Remote display signal -------------------- 1 circuit
: On-line maintenance ---------------------- 1 circuit
: Power fail alarm --------------------------- 1 circuit
Relay closure signal (250V, 5A max)
• Power supply : 100/110/115/220/230VAC ±10%, 1
φ
, 50/60Hz, 100VA or less
2) Environment
• Operating temperature : –15 to +55°C
• Operating humidity : +40°C, 93%
• Vibration : IEC60945 ed.4 compliant
• EMC : IEC60945 ed.4 compliant
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