Chapter 3 How to use the system menu
T
-900 series
3-4
0093142132-00
STC Curve
When changing the STC curve according to the
antenna’s setting position, perform as follows.
Setup: 1 to 8 (Initial value: 4)
Note: Set the STC curve after the gain
setting. When setting the STC curve,
go out of the harbor and perform at
the location where the reflection
from sea surface is displayed on the
radar screen.
1
Set the [GAIN] knob to 8, the [STC] knob to
0 and the [ECHO]
→
[FTC] setting to [OFF].
Adjust so that the noise-like sea surface
reflected echo is displayed at the center of
the image as shown below.
2
Press the [- RANGE +] key to select the
range that can display the entire sea surface
reflected echo can be displayed.
3
Adjust the [STC] knob and stop it just before
the sea surface reflected echo completely
disappears (In the state that the sea surface
reflected echo is sparsely displayed.) As
shown in [Proper] below, when the sea
surface reflected echo from near to far
distance disappears evenly, the STC curve
set value is proper. As shown in [Large],
when the sea surface reflected echo at near
distance disappear first or the sea surface
reflected echo at far distance disappears
first, it is necessary to change the setting in
the procedure described in the next page.
4
Press the [MENU] key.
5
Move to the system menu.
Refer to 3.1 Display of System Menu.
6
Select [ADJUST]
→
[STC CURVE].
7
Change the setting of [STC CURVE] with the
[ ] and [ ]
When the sea surface reflected echo at near
distance disappears first, decrease the
value.
When the sea surface reflected echo at far
distance disappears first, increase the value.
8
Adjust the [STC] knob again.
Adjust so that the sea surface reflected echo
from near to far distance disappears evenly
as shown in the illustration [Correct] in step
3.
The STC curve set value is applied to all
ranges.
Note: The setting of STC characteristics
needs to be performed in the ocean.
However, when it is obliged to
perform in a harbor, set the STC
curve to [4].
