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The select initialization window will appear, with the ‘select from map’ option
highlighted.
1. Press
T
to initialize the receiver from the built-in worldwide map.
The map page will appear, prompting you to select your approximate present posi-
tion with the map cursor.
1. Use the
R
keypad to move the map cursor to a location close to your present position. If you
have difficulty identifying your exact position, use the bottom arrow of the
Z
key to zoom in to a
lower map scale.
2. Press
T
to confirm your selection.
The GPSMAP 135 Sounder will now begin searching for the appropriate satellites
for your present position and should acquire a fix within a minute or so. While the
receiver searches for satellites, a flashing satellite icon will appear at the left-hand side
of the status bar located at the bottom of the screen. The status bar is used to monitor
the current status of functions such as satellite signal reception, activated alarms, and
also constantly shows the digital depth. A signal strength bar for each satellite in view
will appear on the lower half of the page, with the appropriate satellite number under
each bar. The progress of satellite acquisition is shown in three stages:
• No signal strength bars— the receiver is looking for the satellites indicated.
• Hollow signal strength bars— the receiver has found the indicated satellite(s) and is
collecting data.
• Solid signal strength bars— the receiver has collected the necessary data and the
satellite(s) is ready for use.
Once the receiver has collected information from at least three satellites, the flashing
satellite icon on the status bar will glow steadily, and the GPSMAP 135 Sounder is
ready for use.
2
GETTING STARTED
Initialization
A. Use the arrow keypad to move the cursor to a
location close to your present position.
B. Hollow signal strength bars will appear on the
status page while the receiver collects satellite
data.
GPS 135 Rev C 8/4/98 4:17 PM Page 2