Lowrance 7200c 操作指南

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页码 168
53 
To turn on trail display: 
1. Press 
MENU
|
MENU
|
 to 
M
T
RAILS
|
ENT
2. Press 
 to enter the Saved Trail list, then use 
 or 
 to select the de-
sired Trail Name|
ENT
3. Press 
 
→ to 
A
CTIVE
|
 
to 
V
ISIBLE
|
ENT
. To return to the previous page, 
press 
EXIT
|
EXIT
|
EXIT
|
EXIT
Navigating Trails 
There are three methods for following a trail: visual trailing, navigat-
ing a trail (forward) and backtracking a trail (backward). Try each 
method to see which you prefer. 
Visual trailing is the simplest method. It uses only the Map Page and 
requires no menu commands at all. The technique works the same if 
you are running a trail forward (from start to end) or backward (from 
end to start). Visual trailing, however, provides no navigation informa-
tion during the trip, such as the time to your destination. 
The other two methods provide a full range of navigation data and 
work with both the Map Page and Navigation Page. The only difference 
between them is "navigating a trail" follows a trail forward, while 
"backtracking" follows a trail in reverse. 
When hiking at walking speed with a hand-held GPS, we often just use 
visual back trailing because it is better following each little turn on a 
foot path. At faster speeds — like traveling on the highway or on the 
water — the Navigate Trail and Backtrack Trail commands are handy. 
Visual Trailing 
1. On the Map Page, zoom (
ZIN
 or 
ZOUT
) so your trail is visible. 
2. Begin moving and watch the Map Page. Simply walk or steer so your 
current position arrow moves along the trail you have just made. 
Tip: 
Generally, when using this method, the smaller the zoom range, 
the more accurately you will be able to steer along the trail. 
Navigate a Trail (forward) 
The following figures illustrate the menu sequence for navigating a trail. 
1. Press 
MENU
|
MENU
|
 to 
M
T
RAILS
|
ENT
2. Press 
 to the Saved Trail list, then use 
 or 
 to select the desired 
Trail Name|
ENT
3. Press 
 to 
D
ELETE 
T
RAIL
|
 to 
N
AVIGATE
|
ENT
4. Press 
 to 
N
AVIGATE
|
ENT
. The unit begins showing navigation infor-
mation along the trail.