NMEA 0183 ist ein Kommunikationsprotokoll, das von der National Marine Electronics Association (NMEA) entwickelt wurde bevor es NMEA2000 gab.
Der NMEA 0183 Standard spielt trotz der Entwicklung neuerer Technologien immer noch eine wichtige Rolle in der maritimen Elektronik.
Wie funktioniert NMEA 0183?
Das Protokoll definiert eine Methode zur Übertragung von Daten in Form von ASCII-Text und spezifiziert sowohl das physikalische Interface (serielle Datenübertragung) als auch das Datenformat. NMEA 0183 nutzt eine serielle Schnittstelle, üblicherweise RS-422, die eine einfache Punkt-zu-Punkt- oder Multidrop-Verbindung zwischen Geräten ermöglicht.
Das Protokoll verwendet ein standardisiertes Format für Datenmeldungen, die sogenannten "Sentences". Jede Sentence beginnt mit einem '$'-Zeichen, gefolgt von einem Datensatz, der spezifische Informationen überträgt.
Weite Verbreitung in älteren Systemen
NMEA 0183 ist auf eine relativ niedrige Übertragungsgeschwindigkeit beschränkt, typischerweise 4800 Baud, was für einige moderne Anwendungen als Einschränkung angesehen wird. NMEA 0183 ermöglicht es älteren und weniger komplexen Systemen, effektiv zu kommunizieren, und wird heute oft durch Interfaces unterstützt, die eine Verbindung zu moderneren Systemen wie NMEA 2000 ermöglichen.
Modern technology for a safe, reliable and easy connection of your NMEA 0183, RS422 or RS232 devices connected to the USB port of your PC.The USG-2 converts a USB port into a bidirectional serial interface for communication with NMEA 0183 devices is needed.Compared to simple USB to serial converters a much more secure connection to NMEA 0183 system is guaranteed.By using the ISO-DriveTM output and the opto-isolated input a galvanic separation. Thus, the data lines can be easily connected without form ground loops.In the entrance is used by a Actisense OPTO separation circuit that protects the connected devices against system failures. In addition, it also allows for the reception of very weak signals, which are often of traditional USB to serial converters too small and thus will not be received by the PC interface.The USB connector specifically designed in conjunction with, included, quality balanced USB cable ensures a high moisture protection of the USB connector.The screwless terminals allow quick and easy installation.The connection states are indicated by several LEDs and allow a quick and easy diagnosis of connection problems to. The blue power LED lights when the USB driver has been successfully loaded and the USG-2 is powered. The green (receive) and orange (send) LEDs indicate whether data is available.properties- protected against overvoltage input / output- Easy installation- Protection of the PC by galvanic isolation- Protection against ground loops- NMEA 0183, RS422 & RS232 compatible- ISO Drive TM technology- Isolated Input (2500v)- Isolated output (1500V)- Sealed electronic- Sturdy, waterproof USB connection- Status LEDs (power, data IN, OUT data)- Baud rate 300 to 230400 bps- connector with screwless terminal Anschuss
The electromagnetic logber measures the drive through the water without moving parts. It does not require a paddle wheel that could be blocked by drift material, vegetation or shells.The encoder creates a magnetic change under the boat and measures the resulting electric field, which is generated by the boat that moves through the water.With excellent linearity, the scope of delivery converts the sensor signal at boat speed, trip and total distance. The data output in the NMEA0183 format can be connected with any compatible display device that the output data records can be reproduced "VHW" and "VLW", e.g. the NASA - Clipper Easylog.The EML-2 donor is only suitable for assembly in the outer skin of GRP shelves, steel or aluminum gumbs would influence the electromagnetic field of the encoder.Since the donor made of glass fiber is made reinforced plastic, the donor must never be mounted in wooden gumbs, since the source of the material could destroy the donor.Not usable with existing NASA marine travel measuring systems or as a replacement for defective conventional NASA log sponsors!Technical specifications:- Face measuring range: 0.2 - 40 nodes- Resolution speed: 0.1 nodes- NMEA 0183 Data records: VLW + VHW- Updaterate: 0.5Hz- Nominal voltage: 12V DC- Electricity recording: 80mA- Material giver and flange: glass fiber reinforced plastic- Installation diameter donor flange: 51mm- Connection line GENER: Length 5m
€202.90*
€218.00*(6.93% saved vs. recommended price)
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