User manual JRC JMA-9932-SA

[. . . ] MARINE RADAR EQUIPMENT INSTRUCTION MANUAL 9900 LCD 1087/1089 NKE-1079/1075A NKE-1079/1075A NKE-1079/1075A Then, wipe his mouth so that foaming mucus does not accumulate inside. Transmitter-receiver Unit Type NTG-3037/3037A Scanner Unit Type NKE-1075/1075A (12 Feet) Display Unit Type NCD-4263(Self-standing Type) xiii·| Monitor Unit Type NWZ-158T (Desktop Type) (Option) Control Unit Type NDC-1279T (Desktop Type) (Optyon) Keyboard Unit Type NCE-7721T (Desktop Type) (Option) Display Unit Type NCD-4263T (Desktop Type) (Option) CONTENTS PREFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i Before Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii Cautions to be Used during Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii PRECAUTIONS BEFORE OPERATION ·¡ ·TM ·TM ·TM ·¡ Cautions for high voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v What to do in case of electric shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v First-aid treatments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi When pulse is beating but breathing has stopped . . . . . . . . . . . . . . . . . . . . vii When both pulse and breathing have stopped . . . . . . . . . . . . . . . . . . . . . . . . . viii FIRST-AID TREATMENTS EQUIPMENT APPEARANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Next, press the right trackball button to select it. The data of the designated target will be deleted, and the symbol will, change to acquisition mark. 5-19 ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe 5. 7 ALARM DISPLAY The ARPA system provides the following alarms: Dangerous target alarm: CPA/TCPA Guard zone intrusion alarm: GZ Lost target alarm: LOST System function alarm: ARPA (DATA) Gyro set alarm: SET GYRO Dangerous Target Alarm: (CPA/TCPA)¥¥ ¥ CAUTION If either the CPA LIMIT or TCPA LIMIT is set to zero, then the dangerous target alarm will not operate. Since these alarms may include some errors depENTing on the target tracking conditions, the navigation officer himself should make the final decision for ship operations such as collision avoidance. In the ARPA system, targets are categorized into two types: tracked targets and dangerous targets. The degree of danger can easily be recognized on the display at a glance, so that an officer can easily decide to which target he should pay attention. Dangerous Target Alarm Status Tracking target ·> Dangerous target ·¢ Symbol on CRT Alarm characters (OFF) CPA/ TCPA Alarm sound Conditions · CPA>CPA LIMIT · 0>TCPA · TCPA>TCPA LIMIT · CPACPA LIMIT 0TCPATCPA LIMIT , T (OFF) Beeping (pee-poh) Acknowledgeable CPA LIMIT and TCPA LIMIT: The setting values 5-20 ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe Guard Zone Alarm [GUARD ZONE]¥¥ ¥ CAUTION In setting a guard zone, it is necessary to adjust radar tuning, gain, sea clutter suppression and rain/snow clutter suppression to ensure that target echoes are displayed in the optimum conditions. The guard zone alarm is not generated for the targets that are not detected by radar. , T The guard zone function is used to set a zone at an arbitrary range and to sound an alarm if a target intrudes into this zone. Refer to section 3. 4 "Set Guard Zones" on how to set guard zones. Guard zone Guard Zone Alarm Status Target entering the guard zone ·¤ Symbol on CRT Alarm characters Alarm sound Beeping (pipipi) Acknowledgeable GZ Conditions An alarm sound is generated when a target enters the 0. 5 NM range between the outer and inner rings. 5-21 ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe Lost Target Alarm [LOST TARGET]¥¥ ¥ Attention If the radar tuning, gain, sea clutter suppression and rain/snow clutter suppression are not appropriate, the lost target alarm may be generated frequently, so that adjustments should be made carefully. When it is impossible to continue tracking any acquired and tracked target, the LOST target alarm will be generated. The typical causes for this alarm are shown below, but they are not limited to these: · The target echo is very weak; · The target has entered the shadow of land or a large ship and its echo is not being received; · The target echo is hidden by sea clutter. , T Lost target Lost Target Alarm Status Lost target Symbol on CRT Alarm characters LOST Alarm sound Beep sound (pee) Acknowledgeable Conditions The alarm will sound once when a lost target symbol is displayed. 5-22 ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe System Function Alarm [ARPA (DATA)]¥¥ ¥ When an abnormal state of an input signal or a problem in the processing circuitry occurs, a character string or alarm is generated. When an alarm occurs for any ARPA function, ARPA (DATA) will appear in the WARNING display area, but no indication is made in the ARPA information display. The cause of the alarm may be an operational error in ARPA, so please contact the service depot or manufacturer. Gyro Set Alarm [SET GYRO]¥¥ ¥ The North Stabilizing Kit (NSK) in this system receives signals from a gyro. However, the system stops tracking the gyro if the power of the master gyro is turned off or if there are any problems with the line. When the power of the master gyro is turned back on, the SET GYRO alarm will be generated. If this alarm is sounded, set the gyro. , T Gyro Set Alarm Alarm characters SET GYRO Alarm sound Beep sound (pipi) Conditions The signals from the gyro are stopped, but the gyro is recovered. 5-23 ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe 5. 8 TRIAL MANEUVERING Attention In trial maneuvering, a simulation is executed with the current course and speed of the target ship. Since the situation is different from actual ship maneuvers, the CPA LIMIT and TCPA LIMIT should be set with ample leeway. Trial maneuvering is used to simulate the course and speed necessary to avoid a collision when a dangerous target appears. When the ship's course and speed are manually entered against the data of the acquired target, a check is made to determine whether there is any danger. The ranges of course and speed to be entered manually are as follows: Course: 360 degrees (0. 1 degree intervals) . . . . . . . . . . . . . . . . . . [EBL] control Speed: 0 to 100 knots (0. 1 knot steps). . . . . . . . . . . . . . . . . . . . . . . . . [VRM] control Trial Maneuvering in the True Vector Mode¥¥ In the True Vector mode, calculations are made according to the values set by TRIAL SPEED and TRIAL COURSE, and the result is displayed as a bold-line that represents the change of the own ship's vector as shown in the figure below (an example of the course changed to starboard). In this figure, the dangerous target that is ahead to the port side becomes safe as a result of the simulation. The target data display field indicates the current CPA LIMIT and TCPA LIMIT values regardless of the result of the simulation. , T NORMAL Dangerous target TRIAL Change of symbol as a result of trial maneuver HL Change in course HL Own ship Own ship T Trial speed (vector time) 5-24 ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe Trial Maneuvering in the Relative Vector Mode¥¥ The result of trial maneuvering in the Relative Vector mode is shown by a change in target vector. In the figure below (with the same conditions as in the True Vector mode on the previous page), it is seen that the acquired target is a dangerous one because its vector is crossing the CPA RING. NORMAL TRIAL Change of symbol as a result of trial maneuver Dangerous target HL HL Change in course , T Own ship CPA·@RING Own ship T CPA RING The above figure shows that the relative vector of the target has changed as shown in the figure as a result of simulation (course and speed), so that the target's symbol is changed to "·> "; i. e. , a safe target. As was the case in the True Vector mode, the data display field indicates the current values of CPA LIMIT and TCPA LIMIT, not those as the result of the simulation. The course change of own ship is displayed as a dotted line. 5-25 ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe ·oe Using the TRIAL Function¥¥ ¥ Procedures 1 Press the MENU or OPTION2 key on the screen. The ARPA menu will be opened. 2 Click SUB1 MENU , then ARPA/AIS and TRIAL . The ARPA TRIAL menu will be opened. 3 Left-click ·gON·h under ·g1. TRIAL·h. "1. TRIAL" will be turned "ON" and the character "T" will blink below the own ship display in the radar screen, indicating that the system is conducting a trial. 4 Make the settings with the course [EBL] control and speed [VRM] control. [. . . ] When more than 50 AIS targets exist, 50 targets to be displayed are selected by the following priority order. (Both CPA and TCPA of a target are less than the preset CPA and TCPA safe limit. ) 2. (The closer target from own ship in the filter has higher priority than further ones. ) 5. Targets outside of a filter and they do not conform with the above 1 to 4 conditions. [. . . ]