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1. OPERATIONAL OVERVIEW
1.1 Units of the System
1.1.1 Radar Control Unit RCU-025
The Radar Control Unit RCU-025 consists of various controls and a trackball module
(trackball, scrollwheel and left and right buttons). The trackball module functions like
a PC mouse. The user rolls the trackball and operates the left and right buttons and
the scrollwheel to do various functions.
When you press the correct key, a single beep sounds to alert you to correct opera-
tion. For wrong operation, several beeps sound. You can select the loudness of the
beep or deactivate the beep on the [Customize] menu.
No. Control Description
1 Turns the system on or off. (With a FURUNO monitor unit, the monitor is
also turned on or off with this switch.)
2 Status LED The color and state of the LED change according to system or alert status.
Green, lighting: Normal operation status; no alerts generated.
Green, flashing: The heater on the CPU board is on, because ambient
temperature is not at least 0°C. The heater takes about two minutes to
warm the equipment. The LED lights green after the heater goes off.
Red, lighting: Acknowledged alert or SYSTEM FAIL. SYSTEM FAIL oc-
curs when there is trouble in the Processor Unit or communication failure
between the Processor Unit and a Control Unit. Each Control Unit detects
trouble and its lamp flashes in red and the buzzer sounds. If this condition
occurs at the No. 1 Control Unit, the SYSTEM FAIL signal is output.
Red, flashing: Unacknowledged alert or SYSTEM FAIL.
3
4
Rotary control,
EBL1, EBL2
Rotary control: Adjusts the active EBL.
EBL1, EBL2: Activates or deactivates the respective EBL.
4
4
8
8
9
9
10
10
11
11
12
12
13
13
14
14
16
16
17
17
18
18
20
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
29
29
30
30
37
37
1
1
2
2
28
28
3
3
36
36
32
32
15
15
5
5
33
33
34
34
35
35
19
19
31
31
7
7
6
6
Navigation tool
Display control
Radar signal processing
Radar system
Navigation tool
Target
Range
A
lert Menu control