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(In this state, the echo is displayed at the highest level on this PPI screen.)
(g) Display the INSTALLATION menu by pressing the [MENU] key in long mode, select
RADAR ,
[ACQ/ENT].
(h) Adjust the control level to the level where noise near 6NM is slightly above by turning
[JOG DIAL] and end the operation by pressing [JOG DIAL] or [ACQ/ENT].
9.8.3 Control of main bang [+RANGE-] [AUTO-TUNE] [AUTO-SEA] [AUTO-RAIN]
[GAIN/PL] [MENU]
This adjustment is to suppress a main bang, which is a reflection signal from a microwave circuit
of a waveguide that normally appears as a circular image at the center of the radar screen.
In the optimum adjustment, a faint image of a main bang remains on the screen.
Do not change this adjustment unnecessarily.
An incorrect adjustment may erase the closest target and a collision may occur.
Use the following procedure to set a main bang suppression level and its range.
Use the following procedure to set a main bang suppression level and its range.
Use the following procedure to set a main bang suppression level and its range.
Use the following procedure to set a main bang suppression level and its range.
(a) Set range to 0.125NM by using the [+RANGE-] key.
(b) Adjust the tuning using the [AUTO-TUNE] knob.
(c) Set the target expansion function to OFF.
(d) Set the correlation processing function to OFF.
(e) Turn the [AUTO-SEA] knob to the center position, and adjust the function strength to the
extent that main bang can be indentified.
(f)
Turn the [AUTO-RAIN] knob to the minimum position (anti-clockwise for one full rotation).
(g) Turn the [GAIN/PL] knob to the maximum position (clockwise for one full rotation).
(In this state, the echo is displayed at the highest level on this PPI screen.)
(h) Display the INSTALLATION menu by pressing the [MENU] key in long mode, select
RADAR , RADAR ADJUST2 , and MBS LVL , and press [JOG DIAL] or [ACQ/ENT].
RADAR ADJUST2 , and
STC PRESET , and press [JOG DIAL] or
Ｓ Ｓ Ｓ Ｓ Ｔ Ｔ Ｔ Ｔ Ｃ Ｃ Ｃ Ｃ
Ｐ Ｐ Ｐ Ｐ Ｒ Ｒ Ｒ Ｒ Ｅ Ｅ Ｅ Ｅ Ｓ Ｓ Ｓ Ｓ Ｅ Ｅ Ｅ Ｅ Ｔ Ｔ Ｔ Ｔ
0 0 0 0 0 0 0 0 6 6 6 6 3 3 3 3
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