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NMEA Data Combiner

NDC-3-B

User Manual

Issue 1.31



Multiple talker interface for use with the NMEA 0183 standard.

Serial-data networking of marine electronic devices / instruments



Personal computer (RS232) interface to NMEA 0183 standards

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Summary of Contents for NDC-3

Page 1: ...er NDC 3 B User Manual Issue 1 31 Multiple talker interface for use with the NMEA 0183 standard Serial data networking of marine electronic devices instruments Personal computer RS232 interface to NME...

Page 2: ......

Page 3: ...mpatible RS 232 bi directional port 5 Technical features 5 Software updates 5 Connecting devices together 6 The basics 6 The NMEA signals 6 The different NMEA standards 6 Connections 7 Connecting to N...

Page 4: ...n the NMEA sentence is validated Therefore the electronic device s supplying the NDC 3 with NMEA data retain s the sole responsibility for the NMEA data s validity Foreword Actisense recognises that i...

Page 5: ...m drive capability The full differential output ensures better quality communications and lower noise emissions on unshielded twisted pair cabling Full speci cation RS232 interface ensures that any ma...

Page 6: ...ine Tx or Out and used the ground as the other line similar to the way a computer serial port works This connection method is referred to as single ended instead of the differential method used by NME...

Page 7: ...to a Personal Computer PC or other marine device capable of interfacing to a standard RS 232 port 4 Battery supply input Note 1 To complete the NMEA 0183 standard all device interconnection NMEA cable...

Page 8: ...connection ID s Simply connect A to A and B to B refer to gure 2 NMEA Talker device 3 This device does not conform completely to the NMEA 0183 standard However by connecting to A and its G Ground to t...

Page 9: ...ine and one for the RX line Use the spare wire in each pair as ground and connect the cable shield to ground only at the computer end 3 The TX of the NDC 3 should be connected to the RX of the compute...

Page 10: ...ion Also indicates that no data is currently being received by the NDC 3 hardware Green Flashing 1 10 per second Normal and data Rx mode No error No response required A normal operation mode that indi...

Page 11: ...e reduces to 2v 32 mA Output short circuit current 50 55 mA Baud rate xed see note 3 4 8 kbit sec Data propagation delay 1 0 100 ms RS 232 Input voltage range 15 15 V Input voltage threshold LOW 0 8 1...

Page 12: ...202 746682 International 44 1202 746682 Fax 01202 746683 International 44 1202 746683 Actisense on the Web For advice support and product details E mail support actisense com Website www actisense com...

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