Setting The Keel Offset; Setting The Water Temperature Offset; Calibrating A Water-Speed Device; Adding A Key - Garmin Volvo Penta Glass Cockpit B7 Owner's Manual

Setting the Keel Offset

You can enter a keel offset to compensate the water
depth reading for the transducer installation location. This
allows you to view the depth of the water below the keel
or the true depth of the water, depending on your needs.
If you want to know the water depth below the keel or the
lowest point of your boat and the transducer is installed at
the water line or anywhere above the end of the keel,
measure the distance from the transducer location to the
keel of the boat.
If you want to know the true water depth and the
transducer is installed below the water line, measure the
distance from the bottom of the transducer up to the water
line.
NOTE: This option is only available when you have valid
depth data.
1 Measure the distance:
• If the transducer is installed at the water line
anywhere above the end of the keel, measure the
distance from the transducer location to the keel of
the boat. Enter this value as a positive number.
• If the transducer is installed at the bottom of the
keel and you want to know the true depth of the
water, measure the distance from the transducer to
the water line. Enter this value in as a negative
number.
2 Complete an action:
• If the transducer is connected to the chartplotter or
a sonar module, select Settings > My Vessel >
Depth and Anchoring > Keel Offset.
• If the transducer is connected to the NMEA 2000
network, select Settings > Communications >
NMEA 2000 Setup > Device List, select the
transducer, and select Review > Keel Offset.
3 Select if the transducer is installed at the water line,
or select if the transducer is installed at the bottom
of the keel.
4 Enter the distance measured in step 1.

Setting the Water Temperature Offset

The temperature offset compensates for the temperature
reading from a temperature sensor or temperature-
capable transducer.
1 Measure the water temperature using the temperature
sensor or temperature-capable transducer that is
connected to the network.
2 Measure the water temperature using a different
temperature sensor or a thermometer that is known to
be accurate.
80
3 Subtract the water temperature measured in step 1
from the water temperature measured in step 2.
This value is the temperature offset. Enter this value in
step 5 as a positive number if the sensor measures the
water temperature as being colder than it actually is.
Enter this value in step 5 as a negative number if the
sensor measures the water temperature as being
warmer than it actually is.
4 Complete an action:
• If the sensor or transducer is connected to the
chartplotter or a sonar module, select Settings >
My Vessel > Temp. Offset.
• If the sensor or transducer is connected to the
NMEA 2000 network, select Settings >
Communications > NMEA 2000 Setup > Device
List, select the transducer, and select Review >
Temp. Offset.
or 5 Enter the temperature offset value calculated in step 3.

Calibrating a Water-Speed Device

If you have a speed sensor or a speed-sensing
transducer connected, you can calibrate that speed-
sensing device to improve the accuracy of water-speed
data displayed by the chartplotter.
1 Complete an action:
• If the sensor or transducer is connected to the
chartplotter or a sonar module, select Settings >
My Vessel > Calibrate Water Speed.
• If the sensor or transducer is connected to the
NMEA 2000 network, select Settings >
Communications > NMEA 2000 Setup > Device
List, select the transducer, and select Review >
Calibrate Water Speed.
2 Follow the on-screen instructions.
If the boat is not moving fast enough or the speed
sensor is not registering a speed, a message appears.
3 Select OK, and safely increase the boat speed.
4 If the message appears again, stop the boat, and
ensure the speed-sensor wheel is not stuck.
5 If the wheel turns freely, check the cable connections.
6 If you continue to get the message, contact Volvo
Penta product support.

Adding a Key

You can add keys to the system. The system can have up
to four keys, which are numbered from 1 to 4.
1 Select Settings > My Vessel > e-KEY Management >
Add e-KEY.
2 When prompted, hold the new key in front of the panel.
The system will store the key ID.

Setting the Speed Factor

Before you can set the speed factor, you must compare
the displayed vessel speed with an external data source
for speed, such as GPS or another vessel.
Device Configuration