Nexus 21 NX2 operation manual Server, Autopilot sentence ”A”

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Autopilot sentence ”A”

SERVER

To double the transmission speed, select a NMEA sentence 2 times with 7 slots apart, that is the slots should be as far away from each other as possible.

In a similar way, you can select the a sentence 4 times to make it 4 times faster.

Example: If you want to transmit the Nexus compass heading via NMEA, to for example an autopilot, select (HDM) for every odd slot number, C79, C81, C83 ...

C93, that is 8 times which makes the speed 4 times / second. This leaves the other 8 slots with even numbers, C78, C80, C82 ... C92 free to use for other NMEA sentences.

For connection of NMEA instruments OUT from Server, (see 2.8).

2.10.3Receive NMEA sentences IN to Server There are 5 different main types of NMEA sentences:

1)Position related data: Position, SOG/COG, time, and a limited amount of satellite status if a GPS is connected. The information is read if no other Nexus GPS is connected.

2)Navigation data: (BTW), (DTW), (BOD), (XTE), (SET) and (DRIFT). This information is read only if C75 NAV is set to (ON).

The Server will automatically send data to the Nexus Network. E.g.: (DRIFT), (WCV), (TTG) and (CTS).

3)Compass heading is read only if (C76 CMP) is set to (ON). Heading is either (HDT) (priority) or (HDM). Magnetic variation (from Nexus Network) is added to (HDM) but not to (HDT).

4)Relative wind angle and wind speed is read from (VWR) data, only if (C77 WND) is set to (ON). True wind angle and wind speed is calculated by Nexus, when the boat speed (the speed of the water) is known.

The following NMEA sentences can be received IN to Server:

APA

Autopilot sentence ”A”

APB

Autopilot sentence ”B”

BOD

Bearing original destination

BWC

Bearing and distance to waypoint

BWR

Bearing and distance to waypoint (old)

DBT

Depth measured from the transducers position

DPT

Depth

GGA

Global position fix data (GPS)

GLL

Geographic position, Latitude/Longitude

GSA

DOP and active satellites

GSV

Satellites in view

HDM

Heading, magnetic

HDT

Heading, true

RMB

Minimum navigation information

RMC

Minimum specific GPS/transit data

RTE

Not yet implemented

WCV

Waypoint closure velocity

 

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Contents Server Installation and Operation Manual English EnglishSERVER Edition March This manual is written for NX2 Server version 2.00Installation Part specificationMaintenance and fault finding Specifications1 Part specification Items delivered with the ServerRegistering this product Welcome aboard the Nexus Network Good luck and happy boatingTypical NX2 system 2 Installation 2.1 Location of the Server 2.2 Installing the ServerYour Server installation is done 2.3 Installing the transducers2.4.3 Extra alarm buzzer 2.4 Connecting optional accessories2.4.1 Man over board MOB push-button 2.4.2 Tactical function push-button2.4.4 NX2 instruments 2.6 How to use the NMEA ports 2.5 Connecting instrument lighting2.7 Connecting a NMEA instrument IN to the Server 3 A fuse Red Black 2.8 Connecting a NMEA instrument OUT from Server2.9 Compatibility with our previous transducers 2.9.1 Log transducer2.9.2 Depth transducer All our wind transducers can be used 2.9.3 Wind transducer2.9.4 Compass transducer Only the Nexus version can be used2.9.6 NMEA transducers 2.10.1 Transmit NMEA sentences OUT from Server 2.10 NMEA2.10.2 Change NMEA sentences OUT from Server Autopilot sentence ”A” For connection of NMEA instrument IN to Server, see $PSILTBS,X.X,NCRLF 2.11 Special NMEA sentences$PSILCD1,X.X,X.X,CRLF 2.11.1 Baudrate control3 Maintenance and fault finding 3.1 Maintenance3.2 Fault finding 2. Compass No reading 3.2.2 Fault - action 1. Speed and distance functions No reading4. What you should know about digital depth sounders 3. Wind No readingThe following error messages can appear on the display 3.2.3 Error messages4 Specifications 4.1 Technical specifications4.2 Nexus databus introduction and user policy Nexus Remote Control Instrument 4.3 Optional AccessoriesNX2 Completes NX2/Nexus TransducersNexus Multi XL NX2 GPSNexus Autopilot components WARRANTY GENERAL 5 WarrantyLIMITED WARRANTY CLAIMS PROCEDUREDate of purchase Date installed WARRANTY CARDFile id Dealers stampNexus Marine AB CopyrightKuskvägen 4, 191 62 Sollentuna, Sweden Tel +46 -0 8 - 506 939 00. Fax +46 -0 8 -506 939