Japan Radio Co. jlr-21, Instruction Manual

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Appendix 3-2
Heaving The up and down of the ship
IEC60945
IEC is the abbreviation of International Electrotechnical Commission.
It is an international standard governing electrical and electronic
technologies.
IPX
IPX is a standard of waterproofing, there are nine grades (0 - 8).
(IPX4: splash-proof, IPX6: waterproof)
LCD Unit (LCD)
Liquid Crystal Display Unit.
Log Pulse
Contact output signal, output in 1 pulse per nm.
Expressed in units of "p/nm".
mi/h
Unit of ship speed.
Multipath Wave
Waves received from multiple directions due to reflection or refraction
of an initial wave by obstacles.
NMEA0183 (NMEA)
Abbreviation of National Marine Electrical Association 0183.
International standard for naval equipment transmission established
by the National Marine Electrical Association.
NSK
JRC radar supported format.
Pitch Medial
rotation
Positioning
Use of GPS or DGPS receiving functions to determine the current
position of a ship.
RAIM Accuracy Standard
(RAIM)
Abbreviation of Receiver Autonomous Integrity Monitoring. This
system automatically detects failed satellites and deselects their
positioning data from calculations. Including data from failed
satellites will result in a decrease in positioning accuracy; the RAIM
accuracy standard indicates the accuracy degradation base for
removal of failed satellites from positioning calculations.
Ranging
Positioning with the use of SBAS satellite in addition to GPS satellite.
Rate of Turn
Same as ROT
Reception Level
GPS signal reception level.
Roll Lateral
rotation
ROT
Rate of Turn, the rate at which the ship turns, expressed by
"deg/min".
RS232
Serial data transmission standard. It is unbalanced, and hence can
only be used for short distance transmission.
RS422 Balanced
serial transmission standard.
SBAS
Abbreviation of Satellite-based Augmentation System. It is a blanket
term for wide scale GPS support systems using fixed position
satellites which send GPS error correction data over a wide range.