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GPS Introduction 
 

The GPS System was originally developed by the U.S. Department of Defense where the 
primary use was to provide accurate position data for military applications. 
 
This system consists of a constellation of 24 satellites which orbit the earth twice a day. Each 
satellite accurately transmits its position and time data. All GPS satellites are synchronized so 
that these repeating signals are transmitted at the same instant. The GPS receiver receives 
these signals at slightly different times based on where the location of the satellite is. By using 
this information the receiver can work out exactly its position from the satellites and can 
achieve a position fix on the earth’s surface to within 1m. 

 

Note

: Please be aware that the GPS-1 is for VFR only. Please make sure that you 

understand the instrument thoroughly before using it for navigation purposes  

 
 
The GPS-1 and WAAS (Wide Area Augmentation System) 

 
The GPS-1 also supports WAAS. WAAS is a FAA funded project to improve the accuracy of 
GPS receivers. There are 2 satellites in a geo-stationary orbit currently over North America 
providing additional correction data. The GPS-1 receives these additional signals to make a 
more accurate computation of position. Please see http:gps.faa.gov for more information. 

 
 

Key Assignment 
 
 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Minus Key 

Normal Operation: This key is 
used to go back one waypoint 
within a route when a route is 
selected. 
Menu Operation: 
This key is used to go up 
through the menu system or to 
decrement a value. 

Screen Select Key 

Normal Operation:

 

Press this key to 
toggle between the 
various operating and 
navigation screens. 
Menu Operation: 
Used to cancel or exit 
the current menu. 

Mark Waypoint

Normal Operation: 
Press this key to mark the 
current position as a new 
waypoint. 
Menu Operation: 
No function  

Goto / Nearest Waypoint 

Normal Operation: 
Press this key once to select 
a waypoint to navigate to.  
Press it twice to show the 
nearest waypoint to the 
current position. 
Menu Operation: 
No Function 

Enter / Route Key 

Normal Operation: 
This key is used to select a 
route for navigation. 
Menu Operation: 
This key serves as an enter key.

Plus Key

Normal Operation: 
This key is used to go forward one 
waypoint within a route when a route is 
selected. 
Menu Operation: 
This key is used to go down through the 
menu system or to increment a value. 

Содержание Stratomaster Maxi Singles GPS-1

Страница 1: ...20 user defined routes 150 user defined waypoints Quick and easy to create and manage waypoints and routes Quick to find the nearest waypoint to the current position 5 navigation and information disp...

Страница 2: ...stationary orbit currently over North America providing additional correction data The GPS 1 receives these additional signals to make a more accurate computation of position Please see http gps faa...

Страница 3: ...Screen This screen is useful to display position data when no route or waypoint has been selected It displays information such as a bearing tape altitude ground speed and latitude and longitude as we...

Страница 4: ...orientation in relation to the GPS 1 Horizon Position fix type HDOP Value 2D Fix or PDOP Value 3D Fix North Indicator 45 Degrees above Horizon Vertical Accuracy in meters Horizontal Accuracy in meter...

Страница 5: ...chieved PDOP values in excess of 8 are considered poor Note A position fix with a PDOP of 30 could be as much as 150m from its true location Satellites that are dispersed throughout the sky will achie...

Страница 6: ...ypoint current ground speed ETE Estimate Time Enroute as well as your track and a CDI Course Deviation Indicator Waypoint Descriptor Fix Indicator 2D 2D Fix has been achieved 3D 3D Fix has been achiev...

Страница 7: ...nt position The distance and track is referenced to the current position Move the highlight over save and press to save once you have finished entering a waypoint name and latitude and longitude Press...

Страница 8: ...aypoint that you want to edit Press to edit the waypoint Move the highlight over save and press to save once you have finished editing the waypoint name and latitude and longitude Press to cancel and...

Страница 9: ...o your current position Goto a Waypoint Press the key once during normal operation to go to a predefined waypoint The goto waypoint menu will appear This will display all pre stored waypoints Use the...

Страница 10: ...racters long A route can contain upto 30 waypoints Move the highlight over save and press to save once you have finished entering a route name and latitude and longitude Press to cancel and return to...

Страница 11: ...keys to highlight which waypoint is to be deleted Press to delete the waypoint from the route View Route Select View Route to view a route Use the and keys to select the route to view Press to view t...

Страница 12: ...e route memory Use the and keys to select the route to be deleted Press to select Note If all the waypoints are deleted all the routes will be deleted automatically Starting a route Press during the n...

Страница 13: ...tes defined in the route memory Sunrise Sunset Calculator This sunrise sunset calculator uses a unique algorithm based on date and position to accurately determine the sunrise and sunset times This fe...

Страница 14: ...e North Pole Magnetic Variation This is the angle between Magnetic and True North Magnetic variation varies both from place to place and with the passage of time This option is used in conjunction wit...

Страница 15: ...es to startup Coldstart In coldstart the GPS receiver has no knowledge of the last position or time This is the case when no almanac or ephemeris data is available Warmstart A warmstart is performed w...

Страница 16: ...stics NMEA stands for the National Marine Electronics Association For more information please visit www nmea org GPS Antenna s Even the best GPS receiver in the world will become useless unless a prop...

Страница 17: ...ect the GPS antenna Resetting the GPS 1 to factory defaults Press the and keys when applying power to the unit to reset the unit to the factory default settings Caution All waypoint and route informat...

Страница 18: ...he satellites identification number ETE Estimated Time Enroute This is how long it will take to reach your destination traveling at the current speed WAAS WAAS is a FAA funded project to improve the a...

Страница 19: ...fitment of a fuse in line with a 33V transorb available from MGL Avionics to protect electronic instruments radios and intercom systems Only one such arrangement is required for a cluster of instrume...

Страница 20: ...20...

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