Garmin GPSMAP 130 - Manual (Page 35)

A B
Selecting Map Scales
The map display has 16 available range scales from 1/8th to 4096 n.m. (1/4 to
7500km). The map scale is controlled by the Z keys, with the current scale dis-
played at the bottom of the data window.
To select a map scale:
1. Press the up
Z
key to zoom out and the down
Z
key to zoom in.
The GPSMAP 130’s system has a built-in worldwide database to 64 n.m.(see
Appendix D for a built-in coverage map), with more detailed coverage available
through the use of G-chart
TM data cartridges (see Section 10 for installing and
using G-chart TM cartridges). The GPSMAP 130 will display cartography as long as
there is chart information available for the range you’ve selected. Map coverage
will conform to the following conditions:
• When the selected zoom range is covered by either the internal database or a
G-chart data cartridge, cartography will be displayed.
• When the selected zoom range is covered by both the internal database and
a G-chart cartridge, cartography will be displayed using the data with the best resolution.
• When the selected zoom range exceeds the resolution of the chart in use by
up to two settings, overzoom cartography will be displayed. The display
will not show any filled landmass areas, and an ‘Ovr Zm’ warning will appear
in the scale field. The lat/lon grid will also be turned on regardless of the map
configuration setting.
• When the selected zoom range exceeds the resolution of the chart in use by more than two
settings, all cartography will be replaced by a track plot display, and a ‘No Map’ warning
will appear in the scale field. The lat/lon grid will be displayed regardless of the map con-
figuration setting. Additional caution should be used while navigating in
track plot mode.
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A. Whenever the selected map scale exceeds the reso-
lution of the chart by up to two settings, an ‘Ovr
Zm’ warning will appear in the scale field.
B. Whenever the selected map scale exceeds the reso-
lution of the chart by more than two settings, a ‘No
Map’ warning will appear in the scale field.
SECTION
3
MAP PAGE
Selecting Map Scales
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