Garmin GPS Manual Download Page 16

09/25/02

GPS_field_guide

8:19 A9/P9

16

You can access to these two pages by pressing the 

ENTER

 button from the 'NORMAL

SKYVIEW SATELLITE'

 

page in order to open the 'OPTIONS' window. From there you

can use the 

UP

 and 

DOWN

 buttons to highlight the page you want to access and press the

ENTER

 button.

Once you have finished working on one of these pages you can come back to the
'NORMAL SKYVIEW SATELLITE' page, pressing the 

PAGE

 button again (Figure 14).

The 'DISPLAY' page

This page allows you to setup the back-light time out and the display contrast. The first
element may be useful for night reading and it is important to setup the contrast correctly
in order to insure a good reading of the information on the LCD screen.

When you arrive on this page the 'LIGHT TIMEOUT' field is highlighted and you can
make the scrolling menu by pressing the 

ENTER

 button (Figure 15 a). Once you have

selected the desired time press the 

ENTER

 button to save the option. 

It is recommended

to choose 30 seconds as this option uses a lot of battery power.

You can then pass to the contrast option pressing the 

DOWN

 button. Once the contrast bar

is highlighted (Figure 15 b) press the 

ENTER

 button. You can then use the 

UP

 or 

DOWN

button to modify the contrast until you get an appropriate reading on the screen. Then press
the 

ENTER

 button to save the setting.

          a)

Figure 15

 - 'DISPLAY' page with the 'LIGHT TIMEOUT' menu (a) and the contrast

bar highlighted (b)

b)

Summary of Contents for GPS

Page 1: ...GPS Field guide WHO 2002...

Page 2: ...IEW SATELLITE page 17 3 2 3 2 The MENU page 17 The MARK WAYPOINT option page 19 The SETUP option page 19 The UNITS setup page 20 The SYSTEM setup page 20 CHAPTER 4 TROUBLESHOOTING 4 1 eTrex doesn t tu...

Page 3: ...ellites was achieved in 1994 Each satellite is built to last about 10 years Replacements are constantly being built and launched into orbit The Control segment which consists of ground stations locate...

Page 4: ...transmitted radio signal passes through clouds glass and plastic but not through most solid objects such as buildings and mountains A GPS signal contains three kinds of coded information essential for...

Page 5: ...igure 3 Sphere indicating the potential location of the GPS receiver with one satellite signal 2 Calculates the distance to a second satellite for which it is able to catch a signal 19 000 km for exam...

Page 6: ...e circle reported on Figure 4 corresponding to the intersection of the first two spheres Figure 5 Potential locations of the GPS receiver with 3 satellites signals b Most of the time one of these two...

Page 7: ...e sky is called the Positional Dilution of Precision PDOP A good PDOP is obtained when the satellites are located at wide angles relative to each other Figure 6 a In the contrary a poor PDOP result fr...

Page 8: ...mportance for the users to be located in the most open area as possible before taking the measurement There are other sources of error over which the user does not have control including Atmosphere de...

Page 9: ...the clusters This concerns for example health facilities roads market water pumps and so on If the location of these is known the GIS tool will be used to calculate the distance to the nearest infras...

Page 10: ...ns for approximately 22 hours on two AA alkaline batteries and can operate under dense tree canopy The present section describes the receiver as well as the operating system allowing the user to measu...

Page 11: ...iver to perform different operations and to display the final result on the LCD screen through a specific operating system The case also contains an internal built in clock and memory that has the cap...

Page 12: ...not want to continue 5 The Up and Down buttons These buttons are used to select options on pages and menus and to adjust the display contrast 6 The Enter button This button is used to confirm data en...

Page 13: ...to observe the proper polarity when inserting the batteries It is very important to install the TWO batteries with the proper polarity positive and negative orientation as indicated in the unit s bat...

Page 14: ...utton In the context of the WHS we will only need to use two of them The NORMAL SKYVIEW SATELLITE page The MENU page Figure 12 The 4 Main pages of the Garmin eTrex GPS receiver Following is the descri...

Page 15: ...egarding its position based on the satellite s localisations The number of satellite signals that the receiver is tracking indicated by the drawing in the middle of the screen Each line between the ch...

Page 16: ...t to setup the contrast correctly in order to insure a good reading of the information on the LCD screen When you arrive on this page the LIGHT TIMEOUT field is highlighted and you can make the scroll...

Page 17: ...d square in black one in grey having a signal not strong enough and the last one not being read by the device the n 20 This display is very helpful to check the Positional Dilution of Precision PDOP s...

Page 18: ...to access to the structure of these two options Figure 18 Scheme to access the MARK and SETUP option pages To access to the selected option you have to highlight it in the menu using the UP or DOWN bu...

Page 19: ...e WHS Figure 19 the MARK WAYPOINT option page The SETUP option page The SETUP option page Figure 20 allows the user to customize the eTrex This page contains a list setup pages In the context of the W...

Page 20: ...he GPS unit and connected with the Earth s magnetic field variation Ones all the units have been setup it is possible to keep them as default be highlighting the DEFAULTS option and pressing the ENTER...

Page 21: ...y be large obstacles around you that stops the satellite signals move to a new location a large open area with a clear view of the sky 2 Another window with a message may appear see section 4 3 for th...

Page 22: ...NTER eTrex then asks HAVE YOU MOVED HUNDREDS OF MILES KM SINCE LAST USE Press UP DOWN buttons Highlight YES Press ENTER eTrex will do an AUTOLOCATE and switch to the Satellite Page 4 4 I am not gettin...

Page 23: ...get are outside the range indicated in the Country information document 1 Make sure the eTrex is configured as indicated in point 7 of the Quick Reference Guide and redo the reading correctly 2 If th...

Page 24: ...in latitude longitude coordinates the current local time and date information obtained through the satellite signal when using the eTrex unit Map Datums Since the Earth is not flat a model needs to be...

Page 25: ...ographic Information Into MEASURE Surveys A field Guide to GPS Data Collection Garmin Website http www garmin com Garmin GPS Guide for beginners http www garmin com manuals gps4beg pdf Eagle GPS Tutor...

Reviews: