Grid size comparisons – DeLorme 6 User Manual

Page 365

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Using Handheld Devices

357

5. Click Save

.

6. Send the map package to your Earthmate PN-40, Earthmate PN-20, Palm OS,

or Pocket PC PDA.

Notes

• Your saved map packages display in the Saved Map Packages list.
• To view a previously exported map, select it from the Saved Map Packages

list and then click View

• To delete a previously exported map, select it from the Saved Map

Packages list and then click Delete

• You may experience a performance issue if you try to export a map that

covers a very large area. To improve performance, decrease the size of the
map. If the map does not cover the area you need, export several smaller

maps until they cover the entire area you need.

Grid Size Comparisons

When you use the Handheld Export tab to export maps, you can choose a grid size.

A grid of the same size gets progressively larger in coverage (square area) the closer
it is to the equator. This is because the grid system is based on the

latitude/longitude coordinate system.

60 seconds = 1 minute
60 minutes = 1 degree

A 1.5 degree grid = 9 30 minute grids, 324 5 minute grids, 8,100 1 minute grids, or
202,500 12 second grids.
A 30 minute grid = 36 5 minute grids, 900 1 minute grids, or 22,500 12 second
grids.
A 5 minute grid = 25 1 minute grids or 625 12 second grids.
A 1 minute grid = 25 12 second grids.

Grid

Size

Factor #

of

Grids

# of

Grids

# of

Grids

# of

Grids

Display Range

1.5
degree

9 x 30
minute

1

N/A N/A N/A 4-20

30

minute

36 x 5

minute

9

1

N/A N/A 6-20

5

minute

25 x 1

minute

324 36 1 N/A

8-20

1

minute

25 x

12
second

8,100 900 25 1 11-20

12
second

N/A 202,500

22,500

625

25 13-20

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