Lowrance X510C, Руководство по эксплуатации

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lower engine unit can be several feet. In those cases, an inexact depth
reading could result in grounding or striking underwater structure.
The Keel Offset feature eliminates the need for the navigator to men-
tally calculate how much water is under his keel.
Keel Offset lets you calibrate the digital depth: chart depth scale, chart
cursor depth and fish symbol depth displayed on the screen. To calibrate
the depth indicators, first measure the distance from the face of the trans-
ducer to the lowest part of the boat. In this example, we will use 3.5 feet.
We enter this as a
negative 3.5 feet, which makes the depth indicators per-
form as if the transducer's lower in the water than it really is.
1. Press
MENU
|
MENU
|
↓
to
S
ET
K
EEL
O
FFSET
|
ENT
.
2. The Keel Offset dialog box appears. Press
↓
to change the plus (+)
sign to a minus (–) sign.
3. Press
→ to the first number, then press ↑ to change the number to 3
4. Press → to the second number, then press ↑ to change the number to
5, then press
EXIT
. The depth indicators now accurately show the depth
of water beneath the keel.
NOTE:
If knowing the exact depth of water beneath the keel is less impor-
tant, you can calibrate the depth indicators so that they show the ac-
tual water depth from surface to bottom. To do this, first measure the
distance from the face of the transducer up to the surface (the water
line on the boat). In this example, we will use 1.5 feet. This will be en-
tered as a
positive 1.5 feet, which makes the depth indicators perform
as if the transducer's higher in the water than it really is.
1. Press
MENU
|
MENU
| ↓ to
S
ET
K
EEL
O
FFSET
|
ENT
.
2. The Keel Offset dialog box appears with a plus (+) sign at the
front of the box.
3. Press
→
to the first number, then
↑
to change the number to 1.
4. Press
→
to the second number, then
↑
to change the number to 5.
Press
EXIT
to return to the previous page . The depth indicators now
accurately show the water depth from surface to bottom.
Set Language
This unit's menus are available in 10 languages: English, French, Ger-
man, Spanish, Italian, Danish, Swedish, Russian, Dutch and Finnish.
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