Nexus RACE BOX Installation And Operation Manual
  1. Manuals
  2. Brands
  3. Nexus Manuals
  4. Server
  5. RACE BOX
  6. Installation and operation manual

Nexus RACE BOX Installation And Operation Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

RACE BOX
Installation and Operation Manual
English

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the RACE BOX and is the answer not in the manual?

Questions and answers

Related Manuals for Nexus RACE BOX

Summary of Contents for Nexus RACE BOX

  • Page 1 RACE BOX Installation and Operation Manual English...
  • Page 2 RaceBox English...
  • Page 3 English RaceBox Edition: Mar 2012 This manual is written for Nexus RaceBox 1.00...

  • Page 4: Table Of Contents

    Interpreting the data. What does it all mean? ............ 22     How does the Race Box choose its target? ..............22     How does the Race Box choose the path to the target? ..........23     Distance and time to line calculations ................23    ...
  • Page 5 English RaceBox     6.1.6 MTL - Meters to start line ................29     6.1.7 FTL - Feet to start line ................29     6.1.8 BL - Boat Lengths to start line ..............29     6.1.9 OPT_A - The optimum apparent wind angle ..........30  ...

  • Page 6: Part Specification

    RaceBox English 1 Part specification ___________________________________________________________ Items delivered with the Race Box Description The Race Box push button buzzer DB9 male to DB9 female serial cable power cable SD memory card Mounting screws This manual Registering this product Once you have checked that you have all the listed parts, please take time to fill in the warranty document and return it to your national distributor.

  • Page 7: Overview

    NX2 Multi, the Multi XL, the NXR Multi and the larger NXR instruments. The Race Box is powered by 12 volts DC, just as the Nexus server is. A standard, DB9 male to DB9 female straight through serial cable connects the Race Box to the Server data port.

  • Page 8: Calculated Data

    For example, if the Race Box is calculating “time to line (TTL),” we have to tell it which field to display this information in. If we have only NX2 instruments, then the choices are CAD and CFD.

  • Page 9: Installation

    Nexus Server should serve equally well for the Race Box. You will notice that, just like the Nexus server, the Race Box only has openings on one side. Also like the server, the Race Box should be mounted so that it's bottom is against a vertical surface and the side with the wire openings is oriented downward.

  • Page 10: Serial / Fdx Cable

    12VDC Power Next, hook up power leads to the Race Box. The Race Box is powered by 12 Volts DC and requires as much as approximately 0.17 amperes of current under certain conditions (but typically uses much less). Please see the diagram in figure yyy to locate the 12VDC connection terminal.

  • Page 11: Software Configuration

    Once you have your polar file ready, copy it to the SD card. You can name your polar file whatever you like, but it must end in .NXP in order for the Race Box to recognize it. Don't put more than one polar file on the card. The Race Box will use whichever it finds...

  • Page 12: Configuration File

    Assuming everything is connected and installed correctly, you'll see the blue data light on the Race Box come on. It will remain lit solid until the Server is powered on. As soon as it begins getting data from the Server, it will be begin to flash steadily. Approximately 10 seconds later, it should begin flashing more rapidly and irregularly.

  • Page 13: Shutdown

    SD card can not simply be removed from its socket. You must first “eject” it. On the Race Box, we “eject it” by just turning off the Race Box. It is very important that you never remove the SD card from the Race Box without first shutting down. If you do, it is possible that you will corrupt the data on the SD card, rendering it corrupted and possibly completely unusable.

  • Page 14: Nxb Log

    If you prefer that this log not be generated, then change the above line to: CSV_LOG_FILE=OFF In the case of the CSV file, you can control how frequently the Race Box adds a line of data. The fastest logging rate is 5 seconds. You can set it to another value, such as 10...

  • Page 15: Target & Polar Boat Speed

    TWA. If you chose to have PBS sent to the TBS field, The Race Box will send the speed at which your polar table predicts you will be traveling given the existing TWA and TWS, even if the TWA is above or below the optimum angle for these conditions.

  • Page 16: Polar File

    Nexus polar file format. The file name must end in .NXP and the file must be placed on to the SD card so it can be read by the Race Box at startup. If you don't have a polar table or just prefer not to use one, then set the following configuration option in the rp4n.cfg file like this:...

  • Page 17: Displaying Tbs And Pbs In Other Fields

    For example, they can display information from load cells. We can tell the Race Box to send TBS and PBS to them for display. You won't be able to use the trim percentage or other TBS specific functions, but you will be able to see the target speed so you can compare it to your actual speed.

  • Page 18: Set Steer Memory

    Nexus system will behave exactly as it would if the button were connected directly to the server. Also, the Race Box will write a text file to the SD card. This file will contain the position and time that the MOB function was triggered.

  • Page 19: In Sequence Data Vs Out Of Sequence Data

    CAD and CFD. The NXR series offers ten additional fields, called custom 0 through custom 9. The Race Box attempts to expand options by allowing the crew to configure it to send certain data to a particular field while in the starting sequence, and other data to that same field both before the starting sequence has begun and after the starting sequence is complete.
  • Page 20 The NXR series instruments have the ten custom data fields, so any type of data generated by the Race Box can be sent to any of those ten custom fields. The Race Box is told which data to send to which field in its configuration file. Here is an example from the config file:...

  • Page 21: Using The Race Box Timer

    This will start the timer at 5 minutes. Valid parameters are even numbers from 1 on up to 60. If you do not want to use the Race Box timer, you can set this parameter to either 0 or to MOB, like this:...
  • Page 22 RaceBox English • start the Race box timer for at least 5 minutes of you want to start the Nexus timer at 5 minutes • start the Race box timer for at least 10 minutes of you want to start the Nexus timer at 10 minutes •...

  • Page 23: Interpreting The Data. What Does It All Mean

    RaceBox timer will be started at 5:00. Viewing the time remaining on the Race Box timer You can view the time remaining on the Race Box timer in the CFD field by setting the configuration file like this: TIMER_CFD=Y This will cause the time remaining on the Race Box timer to be displayed in the CFD field.

  • Page 24: How Does The Race Box Choose The Path To The Target

    To calculate this data, the Race box takes your Time To Line (TTL) and subtracts it from the time remaining until the gun.

  • Page 25: Perpendicular Mode

    As you pass the pin, still on course for the other end of the line, the Race box will continue to target the pin until your bow is half way down the line. At this point, the other end of the line becomes closer and the Race Box switches to target that end.

  • Page 26: Other Starting Strategies

    Of course there are any number of different ways to approach a starting line. The Race Box can assist, as long as you keep in mind how it works so you can interpret the data it presents to you. As with any instrument, its up to the crew to interpret the data to put it to best use.

  • Page 27: Other Configuration Options

    5.5.1 Bow Location and Boat Length To get the most accurate location data possible, the Race Box must be told how far aft the GPS antenna is mounted on your boat. This number is in feet, may have a decimal portion and is put in the configuration file like this: ;...

  • Page 28: Status Lights

    Data Damping The Race Box can dampen the data it uses to calculate the data it sends to the server. When damping, it can do so in the same manner that the NX2 instruments do, or it can just average over a number of seconds.

  • Page 29: Error Conditions

    DAMP_LEVEL_BSP=5 Error Conditions If the Race Box encounters a condition it can not handle, or is there is an error of some type with the configuration, it signals this problem by flashing the red error light. Different flash patterns are used to signal different errors.

  • Page 30: Tbs - Target Boat Speed

    If you are sailing above 90 degrees, the Race Box will use your polar table to calculate the optimum upwind angle for the current true wind speed, then calculate the proper target boat speed for that true wind angle and report it.

  • Page 31: Opt_A - The Optimum Apparent Wind Angle

    English RaceBox 6.1.9 OPT_A - The optimum apparent wind angle When sailing above 90 degrees, this field will contain the optimum apparent wind angle that the boat should be sailing to achieve the correct upwind target boat speed, given the current true wind speed. Conversely, when sailing below 90 degrees, this field will contain the optimum apparent wind angle that the boat should be sailing to achieve the correct downwind target boat speed, given the current true wind speed.
  • Page 32 ; These parameters specify whether position data (Lat/Lon) is taken ; from the Nexus server via FDX or whether the position data is ; accepted directly into the RP4N and if so on which channel. ; Set this parameter to 'F' to accept data via FDX from the Nexus ;...
  • Page 33 ; past TBS values for the past n seconds, where n is whatever ; value you set, and present this result. ; A Y here will cause the RP4N to use the Nexus damping scale. ; Any setting other than Y will use the number of seconds. In ;...
  • Page 34 ; to be a 15 minute countdown, the nexus timer will be started ; when the time reaches 10 minutes remaining if you set this ; parameter to 10. If you set it to 5, then the Nexus timer will ; be started when the RP4N timer reaches 5 minutes.
  • Page 35 English RaceBox TIMER_CFD=Y ; The LINE_PERF_ONLY parameter tells the RP4N how to calculate ; distance from the start line. See the manual for full details. ; In summary, if this parameter is set to Y then distance from ; the start line will be that distance along a perpendicular line ;...
  • Page 36 English ; Starting the Nexus countdown timer will not start the RP4N ; timer, and therefore even if you start the Nexus timer, unless ; also start the RP4N timer (which starts the Nexus timer) you ; will be out of sequence. Therefore, we recommend that you always ;...
  • Page 37 English RaceBox ; is pinged) ; OPT_T - Optimum true wind sailing angle (TWA) for the current ;(Works in or out of starting sequence - line ping not needed) ; OPT_A - Optimum apparent wind sailing angle (AWA) for the current ;...
  • Page 38 This pattern will repeat 6 times, then the RP4N will continue to start normally. If the write protect switch is on, the Race Box will not write a CSV log or an NXB log, even if it is configured to do so. It will, however, write an MOB log if the MOB function is triggered.
  • Page 39 English RaceBox APPENDIX D – POLAR FILE FORMAT The NX2 system together with the NX2 Race SW is able to calculate target Boat Speed from a Polar Table. The polar tables looks different for different boats. The polar table is a tab- or comma-separated-values text file containing target boat speeds for specific true wind angles and speeds.

  • Page 40: Specifications

    RaceBox English 7 Specifications Technical specifications Compss Instrument Dimensions: 156 x 156 32 mm (4.3x4.3 inch). Power supply: 12V DC (10-16V). The instruments are polarity protected Power consumption at 12V: Instrument: 0,12W Temperature range: Storage: -30°to +80°C (-22°to +176°F) Operation: -10° to +70°C(14°to +158°F) Weight: RaceBox: 230 gram (9.17 oz).
  • Page 41 English RaceBox...
  • Page 42 RaceBox English...
  • Page 43 English RaceBox...
  • Page 44 RaceBox English Copyright ©: Nexus Marine AB Karlsbodavägen 20B, 168 67 Bromma, Sweden Tel: +46 -(0) 8 – 506 939 00. Fax: +46 -(0) 8 -506 939 01 www.nexusmarine.se...

Table of Contents