Orientation Mode; How To Measure The Range And Bearing From Your Ship To A Target; How To Display The Range Rings - Furuno TZT9 Operator's Manual

6.6

Orientation Mode

The orientation mode controls the relationship between your ship and all the other tar-
gets.
The heading data is required in the north-up mode. When the heading data is lost, the
orientation mode automatically goes to head-up. Restore the compass signal to show
the heading indication. Select the orientation mode again if necessary.
To select an orientation mode, select [Orientation] from the RotoKey menu then select
[Head Up] or [North Up]. (You can also select an orientation mode with the Radar pop-
up menu.)
Head-up
A display without azimuth stabilization in which the
line that connects the center with the top of the
screen indicates your heading. Targets are shown at
their measured distances and in their directions rela-
tive to your heading.
North-up
Targets are shown at their measured distances and
their true (compass) directions from your ship. North
is at the top of the screen. The heading line changes
its direction according to your heading.
6.7 How to Measure the Range and Bearing from
Your Ship to a Target
You can measure the range and bearing to a target by the ruler. For the range, use
the fixed range rings to get a rough estimate of the range to a target. These rings are
the concentric solid circles about your ship.
6.7.1

How to display the range rings

To display the range rings, select [Rings] from the RotoKey menu. To hide the range
rings, deselect [Rings].
The interval is displayed at the bottom left-hand corner of the screen. To measure the
range with the range rings, count the number of rings between the center of the screen
and the target. Check the range ring interval and estimate the distance of the echo
from the inner edge of the nearest ring.
6. RADAR
Heading line
Heading line
6-5