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NMEA Multiplexer

Owner’s Handbook

Document Number: 81250-1

Date: February 2005

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Содержание NMEA Multiplexer

Страница 1: ...NMEA Multiplexer Owner s Handbook Document Number 81250 1 Date February 2005...

Страница 2: ...Copyright Raymarine UK Ltd 2005...

Страница 3: ...nd this guide EMC Installation Guidelines All Raymarine equipment and accessories are designed to the bestindustry standards for use in the recreational marine environment Their design and manufacture...

Страница 4: ...s willnotdamagetheequipment butmaycausethelossofsomeinforma tion and may change the operating mode Raymarine specified cablesare used Cutting and rejoining these cables cancompromiseEMCperformanceandm...

Страница 5: ...ii Introduction 1 Inputs outputs 1 NMEA inputs 2 Input priorities 2 NMEA outputs 2 Installation 3 Mounting 3 Connections 4 Real time or buffered inputs 4 NMEA in 4 NMEA out 5 Power supply 6 CAUTION E...

Страница 6: ...iv...

Страница 7: ...NMEA Multiplexer has Four NMEA inputs listener ports NMEA In 1 2 3 4 One NMEA output talker port NMEA Out One common terminal NMEA Out Com Data Overflow NMEA In 1a NMEA In 1b NMEA In 2a NMEA In 2b NME...

Страница 8: ...fed via a discrete buffer for each port Each buffer holds approximately 2 seconds of NMEA data Input priorities Data at the listener ports is prioritized so that each NMEA in port isread twiceasoften...

Страница 9: ...s shown in the following illustration D7556 1 Da ta Ov erflo w NMEA 0183 Multiplexer Da ta Ov erflo w NMEA 0183 Multiplexer 1 2 4 3 Place the NMEA Multiplexer at the intended location and mark holes f...

Страница 10: ...These inputs will store only one NMEA sentence at a time and thus prevent unwanted delays Slower data that is input as a burst should be connected to either NMEA In 3 or NMEA In 4 as buffered inputs T...

Страница 11: ...lexer NMEA out Device with single ended NMEA output Ground NMEA Multiplexer Note NMEA outputs from Raymarine products are differential Shield D7587 1 NMEA In a NMEA In b Device with differential NMEA...

Страница 12: ...uments and or computer Protect the power supply with a 0 5 A fuse The wires used to connect the power supply must be less than 50 m in length and have a total cross sectional area of at least 0 2 mm2...

Страница 13: ...s to make sure the cables are physically secure and cannot be accidentally pulled from their connectors Indicators Data indicator lit AgreenDataLEDblinkswhenvalidNMEAdataisreceivedatthe listener ports...

Страница 14: ...vices to different listener ports Both indicators lit Both LED s will blink once when power is applied to the NMEA Multiplexer If the red LED stays lit this indicates that a hardware error was found d...

Страница 15: ...d wire Current consumption 70 mA maximum with fully loaded talker ports Inputs 4 x NMEA 183 galvanically isolated Input resistance 800 Ohm Outputs 1 x NMEA 183 Buffers 2 buffers of 1000 characters NME...

Страница 16: ...r Road Portsmouth Hampshire PO6 3TD United Kingdom Tel 44 0 23 9269 3611 Fax 44 0 23 9269 4642 www raymarine com Raymarine Inc 22 Cotton Road Unit D Nashua New Hampshire 03063 4219 USA Tel 1 603 881 5...

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