Glossary

GPS Plotter

Almanac

Each GPS satellite broadcasts its own orbital data as well as general orbital data of all other GPS satellites. This general orbital data is called the Almanac. The GPS receiver receives the Almanac and decodes it to calculate the quantity and elevation angle of satellites in view, to know when it can receive the GPS signal. If there is no Almanac in the receiver it cannot fix its position. The receiver is shipped with no Almanac, thus when it is turned on for the first time it starts receiving the Almanac. Each time the unit is turned on the previous Almanac is erased and the latest received.

Beacon receiver

The DGPS (Differential GPS) station trans- mits a beacon signal which contains informa- tion about GPS error. The device which receives the beacon signal is called a beacon receiver.

Cold start

When the GPS receiver is turned on for the very first time, it starts receiving the Alma- nac. This condition is called cold start. In this condition it takes about two minutes to find position. Once the Almanac is stored in the GPS navigator, it takes only about 20 seconds to find position. (The normal start-up condi- tion is called warm start.)

Destination

A destination can be either a single destina- tion waypoint or a series of waypoints lead- ing to the ultimate destination. When you set a destination, the GPS receiver provides range and bearing data to the destination, to help you steer to the destination along the shortest past possible.

Differential GPS (DGPS)

The differential GPS system, consisting of DGPS land stations and DPGS beacon re- ceiver equipped marine vessels, further refines the accuracy of the GPS measured position.

A DGPS land station knows its exact posi- tion. If there is a difference between GPS po- sition and DGPS land stations position this is called GPS error. The DPGS station transmits GPS error data to a beacon receiver which relays the data to the GPS receiver. The GPS receiver uses this data to refine the accuracy of the GPS position (within about 10 meters under ideal conditions).

DGPS stations are strategically located throughout America (including Hawaii and Alaska), Europe, Canada, Bermuda and Bra- zil.

Estimated time of arrival (ETA)

The time at which you arrive at a destination.

Geodetic chart

A nautical chart is usually made by either trigonometrical survey or astronomical sur- vey and according to the geodetic chart stan- dards of the country where it is used. The GPS standard chart system is WGS-84.

Thus if you are using a chart different from WGS-84, there will be error between GPS position and nautical chart position. To get correct position, the GPS receiver must know what chart system you are using, to apply an offset to GPS position.

Magnetic bearing

Bearing relative to magnetic north, with the compass bearing corrected for deviation.

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Furuno GP-1610CF manual GPS Plotter
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GP-1610CF specifications

The Furuno GP-1610CF is a sophisticated marine navigation system designed for enthusiasts who demand accuracy and reliability on the water. Featuring a 10.4-inch color LCD display with a resolution of 640 x 480 pixels, this unit provides crystal-clear images of charts and navigation information, even under direct sunlight. Its user-friendly interface allows for intuitive management of various functions, making it accessible for both novice and experienced mariners.

One of the standout features of the GP-1610CF is its integrated GPS receiver, which boasts a high sensitivity that ensures rapid acquisition of satellite signals and precise positioning. The unit supports a range of positioning formats, including WAAS (Wide Area Augmentation System), allowing for enhanced accuracy within the coastal dimensions. Additionally, the GP-1610CF is compatible with DGPS (Differential GPS) systems, further refining positional accuracy and providing a reliable navigation experience.

The GP-1610CF also supports C-MAP NT+ charting, offering an extensive variety of cartographic data covering numerous regions. This enables users to visualize marine environments with detailed bathymetric information, harbor layouts, and navigational aids. The system's customizable waypoints and route planner facilitate efficient marine navigation, allowing users to create multiple routes and track them in real time.

In terms of connectivity, the GP-1610CF offers NMEA 0183 output, which allows it to interface seamlessly with other marine electronics such as autopilots, radar systems, and depth sounders. This enabling communication between devices enhances overall situational awareness and improves navigation assistance.

The unit is built to withstand the harsh marine environment, featuring a robust housing that is resistant to saltwater, humidity, and temperature variations. Additionally, the GP-1610CF can function in challenging lighting conditions thanks to its adjustable contrast and brightness settings, which help maintain visibility during nighttime operation.

Overall, the Furuno GP-1610CF stands as a reliable choice for sailors seeking a high-performance navigation solution. With its combination of advanced GPS technology, high-resolution display, extensive chart compatibility, and robust design, this device continues to be a trusted companion for marine adventures around the globe. Whether cruising, fishing, or engaging in professional navigation, the GP-1610CF delivers essential features that empower users to navigate with confidence and accuracy.
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