SECTION TWO - Installation

Table 3: Troubleshooting the GPS/DGPS antenna installation

Antenna

Symptom

Possible Solutions/Reasons

 

 

 

 

 

 

GPS ANTENNA

Poor or no GPS signal while using the

Turn off any onboard transmitting

 

AN150 antenna.

devices.

 

 

Check for 5.5 VDC at antenna with

 

 

and without antenna load connected.a

 

 

Check for 5.5 VDC at 961 processor

 

 

BNC connector (1710 board).

 

If 5.5 VDC low or missing with load con-

It indicates a bad connector installa-

 

nected:

tion, bad 1710 board, or bad AN150

 

 

antenna.

 

If 5.5 VDC low is missing with load discon-

It indicates a bad 1710 board.

 

nected:

Replace the 1710 board.

 

If 5.5 VDC is present:

It indicates a bad AN150. Replace the

 

 

 

 

AN150.

 

 

 

DGPS ANTENNA

No GPS or DGPS

Bad splitter configuration.b

 

 

Splitter cables may be reversed for

 

 

GPS and DGPS output.

 

 

 

DGPS ANTENNA

Poor or no GPS signal while using the

Check installation for correct cabling.

(cont’d)

AN205-P antenna with splitter:

Check for 7.75 VDC at antenna with

 

 

and without antenna load (cables and

 

 

splitter) connected.c (Use “T” connec-

 

 

tors to measure VDC under load.)

 

 

Check for 7.75 VDC at 961 processor

 

 

UHF connector.

 

If 7.75 VDC is low or missing with load con-

It indicates a bad connector installa-

 

nected:

tion, bad 1710 board, bad AN2xx. The

 

 

load is too great or the 1710 board is

 

 

defective.

 

If 7.75 VDC is low or missing with load dis-

It indicates a bad 1710 board.

 

connected:

 

 

If 7.75 VDC is present at processor UHF

It indicates bad cabling, bad connec-

 

connector but not at antenna:

 

tors, or a bad splitter.

 

 

 

 

 

961 INSTALLATION MANUAL Revision A

Page 39

Page 49
Image 49
NorthStar Navigation 961XD installation manual Antenna Symptom Possible Solutions/Reasons

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.