NorthStar Navigation 961XD installation manual Troubleshooting the radar interface

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SECTION TWO - Installation

b.Testing the GPS portion of the splitter and a combo antenna: When using a combo antenna and split- ter, the splitter gets 7.75 VDC from the beacon receiver, and then feeds the combo pre-amp with that same voltage level. The splitter must have this 7.75 VDC supplied to the differential port in order for the GPS and the differential signal to be passed through the splitter. To test the GPS portion of the combo antenna, disconnect the splitter and plug the combo antenna directly into the GPS BNC con- nector (provided that the 5.5 VDC is present). This troubleshooting technique effectively eliminates the splitter from the equation. If the splitter is bad, GPS may not work when connected normally (provided that the 7.75 VDC from the beacon receiver is present). Note that the combo antenna should never be plugged directly into the GPS port under normal circumstances because the voltage feeding the amplifier is too low and this will result in low GPS signal levels being sent to the GPS receiver.

c.The beacon receiver (8500) supplies the 7.75 VDC to the 8410 (in the case of a whip-type antenna installation), or the splitter (in the case of a combo antenna installation), which in turn feeds the combo antenna.

Table 4: Troubleshooting the radar interface

 

 

 

Component

Symptom

Possible Solutions/Reasons

 

 

 

 

 

 

961 CONTROL HEAD

The display is either knocked out

• Stand directly in front of the display to

 

completely, or the screen flashes

determine if the problem is related to

 

after the radar is turned on (a white

interference to the control head.

 

flash corresponds to each revolution

• Put the radar into “standby” mode; if the

 

of the radar, when the radar range is

display still flashes, a non-radar type of

 

set to 6 nm or above).

 

interference is occurring.

 

 

 

 

• Call the Northstar Service Department

 

 

to determine if the necessary internal

 

 

radar shielding has been installed. If

 

 

yes, ensure that the 961 head (and pro-

 

 

cessor) aren’t in the direct path of the

 

 

radar aperture.

 

 

• Ensure that there’s a maximum separa-

 

 

tion between the 961 control head/pro-

 

 

cessor and the radar cables. Whenever

 

 

possible, run the cables of the radar

 

 

and the 961 on opposite sides of the

 

 

vessel.

 

 

 

961 PROCESSOR

The display is either knocked out

• Stand directly in front of the processor

 

completely, or the screen flashes

to determine if the problem is related to

 

after the radar is turned on (a white

interference to the processor.

 

flash corresponds to each revolution

• Be sure that the processor is mounted

 

of the radar, when the radar range is

as far away vertically from the radome.

 

set to 6 nm or above).

 

The best location for the processor is

 

 

 

 

out of the weather, so try to mount it in

 

 

the salon or as low as possible.

 

 

• Determine if the 961 processor has the

 

 

RF-125 shielding modification installed

 

 

(if you need assistance, call the North-

 

 

star Service Department).

 

 

 

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961 INSTALLATION MANUAL Revision A

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Page 51 Page 53
Contents 961X/XD Page Limited warranty policy Page Contents Installation Manual Revision a Figures Port 1 output setup sentences screen Tables Installation Manual Revision a Who should read this manual WelcomeScope of this manual Hearing from you Getting technical supportContacting Northstar Returning a unit for service Servicing the unitOrdering information Section TWO Installation Safety considerationsInstallation considerations System overviewUsing the GPS antenna AN150 Ensuring a proper 961 installationAvoiding shortcuts Section TWO Installation Mounting the control head Choosing a system locationYoke mounting 961 control head yoke-mount dimensions side 961 control head flush-mount drilling dimensions Flush mountingInstalling the processor WiringProcessor installation tips Electrical power requirements Wiring the systemInstalling the antenna ConnectorsChoosing an antenna Choosing an antenna locationChoosing the AN205-P combination antenna location Separation distances between antennasInstalling the AN150 antenna About the antenna cablingWiring the AN150 antenna Mounting the AN150 antennaStripping the coax cable jacket Installing the AN205-P antenna Wiring the AN205-P antennaCorrect AN205-P combo antenna splitter wiring Completed TNC connector Mounting the AN205-P antennaInstalling an 8410 ACU for use with the AN150 only MountingACU assembly Correct AN150 and 8410 wiring RF groundingDifferential GPS antenna cable connectors Turning the unit on and off Turning the unit onInitial startup screen Advisory message Owner’s message screenFor new units only GPS signals Advisory messageGPS receiver status summary AccuracyAbout auto-dimming mode Turning the unit offLat/lon coordinates SOG and COGTroubleshooting common installation problems Testing and troubleshootingTroubleshooting the installation Display Processor Cont’d Dgps Searching Troubleshooting the GPS/DGPS antenna installation InterferenceAntenna Symptom Possible Solutions/Reasons Receiver Setup key. Check Equipment on the vessel, then check Troubleshooting the radar interface Component Symptom Possible Solutions/ReasonsRadar Device Section TWO Installation Installation Manual Revision a Connector pin wiring Interfacing the unitConfiguring the Nmea output ports Interface cable wiringPort setup options Parameter OptionsAbout Nmea RAY 0183 Setting the output formatDisplaying Nmea output sentences About the Nmea TLL sentence Nmea 0183 sentence identifiersModifying Nmea output sentences Choosing the Nmea 0183 talker ID Setting Nmea 0183 lat/lon precision Setting the Nmea 0183 checksums Setting the auxiliary portChanging the output rate Changing the Nmea 0183 waypoint ID Aux port setup parameters Auxiliary port setup screenSetting Ppnm DiagnosticsAux port baud rate Port offUsing VGA output Ppnm output setup parametersService functions Viewing product informationViewing head 1 serial number and software revision Viewing head 2 serial number and software revisionConfiguring the receivers Processor serial number and software revisionBeacon receiver self-test and software revision GPS receiver self-test and software revisionChanging GPS speed averaging value Receiver information screenSetting Dgps operation Adjusting satellite elevationViewing the GPS software version Setting beacon frequency and baud rate Automatic tuningManually setting baud rate Viewing GPS statusSaving and restoring a 961 database Database function screen Select database to save dialog box Select database to restore dialog box Select a restored database to undo dialog box Saving log dataMaintenance functions Installing 961 software updatesNorthstar Power GPS receiverInterfacing Physical features Control head ProcessorEnvironmental Head ProcessorSignal processing Data processing Power Internal beacon receiver specifications 961XDAN150 Active GPS Antenna Antenna Coupling Unit AN205-P GPS/DGPS antennaNumerics Lat/lon Installation Manual Revision a SOG

961X, 961XD specifications

NorthStar Navigation has long been a leader in marine navigation systems, and the NorthStar 961XD and 961X are no exceptions. These cutting-edge devices bring advanced navigation capabilities to both recreational boaters and professional mariners, ensuring precise positioning and enhanced safety on the water.

The NorthStar 961XD is equipped with a powerful GPS receiver that delivers exceptional accuracy, even in challenging environments. This is achieved through a combination of differential GPS (DGPS) technology and support for WAAS (Wide Area Augmentation System). These features enable users to achieve positioning accuracy within a few meters, which is crucial for safe navigation in crowded or complex marine environments.

One of the standout features of the NorthStar 961XD and 961X is their intuitive user interface. The devices boast a large, high-resolution color display that provides clear visibility in various lighting conditions, including bright sunlight. The menu-driven system allows users to quickly access essential functions, making it easy to plot courses, set waypoints, and track routes on the go.

Both models support advanced charting capabilities, including the ability to display vector and raster charts. The chart database can be easily updated via USB, ensuring that users have access to the latest navigational information. This is particularly important for long-distance cruisers navigating through unfamiliar waters.

Another significant feature of the NorthStar 961XD and 961X is their integrated fishfinder capabilities. With sonar technology, users can locate fish, understand the underwater topography, and enhance their fishing experience. This dual functionality makes the devices versatile companions for both navigation and hunting for the next big catch.

Connectivity is another important aspect of the NorthStar systems. Both models feature multiple connectivity options, including NMEA 0183, allowing seamless integration with other onboard electronics such as autopilots, radars, and AIS systems. This enhances the overall situational awareness and safety of the vessel.

Finally, the rugged design of the NorthStar 961XD and 961X ensures they can withstand the harshest marine environments. With water-resistant housing and durable construction, these devices are built to last, providing reliable performance year after year.

In summary, the NorthStar 961XD and 961X deliver a winning combination of advanced navigation technologies, user-friendly interfaces, integrated fishfinding capabilities, and robust construction. These features make them indispensable tools for anyone serious about safe and efficient navigation on the water.
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