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JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.1 PREPARATION

5－9

[2] Relative Vector Mode

The relative vector does not represent the true motion of the target, but its relative

relation with own ship. This means that a target with its relative vector directed to

own ship (passing through the CPA Limit ring) will be a dangerous target. In the

Relative Vector mode, it can be seen at a glance where the CPA Limit of the

dangerous target is.

Therefore, the True / Relative mode shall optionally be used for the purpose of

observation: the True vector mode for grasping the true aspect of a target, and the

Relative vector mode for grasping a target’s closest point of approach (CPA).

Fig 5-5: Relative Vector

5.1.3.3 Vector Length (Vector Time)

The vector length of a target is proportional to its speed, and the vector time can

be switched in a range of 1 to 60 minutes.

The diagram below illustrates a vector length of a target for 6 minutes, and the tip

of the vector represents the target's position expected to reach 6 minutes later.

Fig 5-6: Vector Length

Refer to Section 5.1.6 "Setting Vectors (Vector Time)".

The true vector is

not displayed

Relative vector

CPA ring

Current position

Future predicted position

(6 min later in this example)

Summary of content (140 pages)

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JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.1 PREPARATION [2] Relative Vector Mode The relative vector does not represent the true motion of the target, but its relative relation with own ship. This means that a target with its relative vector directed to own ship (passing through the CPA Limit ring) will be a dangerous target. In the Relative Vector mode, it can be seen at a glance where the CPA Limit of the dangerous target is.
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JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.1 PREPARATION 5.1.4 Cursor Modes (Cursor) 5.1.4.1 Types and Functions of Cursor Modes The types of cursor modes are listed in the table below. To use the function of a cursor mode, move the cursor onto the PPI object and left-click. 5.1.4.2 Mode Function ACQ TT Enables the target tracking function to acquire a target in manual mode. ACT AIS Activates AIS targets, and sets a point filter.
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JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.1 PREPARATION As shown below, the AUTO mode performs operation in accordance with the object at the cursor position when left-clicked. The AUTO mode permits to access that you want by intuitive operation. Object at Cursor Position Operation None Acquires a target. EBL EBL operation. VRM VRM operation. Intersection point of EBL and VRM Performs EBL operation and VRM operation at the same time.
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JMA-9100 Instruction Manual 5.1.5 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.1 PREPARATION Setting Collision Decision Criteria Attention • Set the optimum values of collision decision conditions, depending upon vessel type, water area, weather and oceanographic conditions. (For the relations between those conditions and alarms, refer to Section 5.5 "ALARM DISPLAY". ) 5.1.5.
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JMA-9100 Instruction Manual 5.1.6 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.1 PREPARATION Setting Vectors (Vector Time) Vector time can be set in minutes in the range 1 to 60 min. A true vector mode or relative vector mode can be selected. 5.1.6.1 Setting vector time on the display (Vector) Procedures 1) Left-click the target vector time setting button in the Target Information located at the lower right of the display. The Vector Time value input screen will appear.
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JMA-9100 Instruction Manual > 5.2 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION TARGET TRACKING OPERATION This section explains how to use the target tracking function. The target tracking function automatically tracks a target, and displays the target's course and speed as vectors. The target tracking function calculates CPA and TCPA, and issues an alarm as needed. The tracking data is erased from memory when the power is turned off or during transmission standby. 5.2.
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JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION [2] Creating the automatic acquisition and AIS activation Zone (Make AZ) Procedures 1) Open the AZ menu by following menu operations. AZ = 捕捉・活性化メニュー (AZ Menu)が開きます。 2) Left-click the item button of 3. Make AZ 1 or 4. Make AZ 2 . The range setting of the acquisition / activation zone 1 (AZ1) or acquisition / activation zone 2 (AZ2) will be started.
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JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION [1] Use of Automatic and Manual Acquisition Modes Use the manual acquisition mode while the automatic acquisition mode is on. Manually acquire the target to which particular attention should be paid, and get the other targets automatically acquired.
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JMA-9100 Instruction Manual 5.2.3 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION Tracked Target Data Display [TGT DATA] Attention When a target or own ship changes its course, or when a new target is acquired, its vector may not reach a given level of accuracy until 3 minutes or more has passed after such course change or target acquisition. Even if 3 minutes or more has passed, the vector may include an error depending upon the tracking conditions. 5.2.3.
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JMA-9100 Instruction Manual 5.2.3.3 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION Cancellation of Numeric Data Display (CNCL Data) Procedures 1) Put the cursor on the tracked target with which numeric data is displayed, and right-click. The cursor mode list will appear. 2) Left-click 6. CNCL Data button. The numeric value will disappear. 5.2.4 Displaying Target ID No.
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JMA-9100 Instruction Manual 5.2.5 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION Adding Tracked Target ID Name (Name) The system can enter a name for each of tracking targets that have been acquired. Procedures 1) Put the cursor on the tracked target, and right-click. The cursor mode list will appear. 2) Left-click 8. Property The Property will appear. 3) Left-click the item button of 1. Name . The setting items for ship name (Name) will be displayed. 4) 5.2.5.
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JMA-9100 Instruction Manual 5.2.6 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION Reference Target (Reference) The system can display the own ship's speed. To do so, it sets a reference target by tracking a target for which ground fixed. Attention • The reference target function is to be used if the own ship's speed cannot be displayed normally due to trouble such as a speed sensor malfunction. Do not use the reference target function except in emergencies.
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JMA-9100 Instruction Manual 3) > 5.OPERATION OF TARGET TRACKING AND AIS Left-click > 5.2 TARGET TRACKING OPERATION 8. Property The Property will appear. 4) Left-click the item button of 3. Reference The reference target function will be set to on or off. 5) On :A reference target is set. Off :The reference target is canceled. Left-click the speed sensor switching button in the Own Ship Information located at the upper right of the display, and select REF. .
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JMA-9100 Instruction Manual 5.2.7.1 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION Test Video (Test Video) Test Video is used to check whether the video signals under target acquisition and tracking are inputted to and processed in the target detection circuit normally. However, it is sufficient to check that VDH in Test Video is displayed. NOTE: Test Video may not be displayed for a target which is not yet acquired or tracked.
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JMA-9100 Instruction Manual 5.2.7.2 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION Target Tracking Simulator (Target Tracking Simulator) Pseudo targets can be generated in certain known positions to check whether the target tracking units are operating normally. Since the pseudo targets move depending on known parameters, the values for these pseudo targets can be compared with the known value if the pseudo targets are acquired and tracked, and displayed.
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JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION Exit 1) Press the [TX/STBY] key to stop the transmitting. The equipment will enter the transmission standby state. 2) Left-click the item button of Menu is displayed. 2. TT Simulator while the TT Test The setting items for TT Simulator will be displayed. 3) Left-click Off . The TT Simulator display will be turned off. 5.2.7.
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JMA-9100 Instruction Manual 5.2.7.4 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.2 TARGET TRACKING OPERATION Gate Display The gate displays an area monitoring a target using the Target Tracking function. This radar equipment allows the gate size to change automatically according to target range and size. User can check the gate size using the following function. Procedures 1) Open the TT Test Menu by performing the following menu operation. TT → 2) 9.
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JMA-9100 Instruction Manual > 5.3 5.3.1 5.OPERATION OF TARGET TRACKING AND AIS > 5.3 AIS OPERATION AIS OPERATION Restrictions The following restrictions are placed on use of the AIS function. The AIS function is unavailable in the following cases: • or REF. is selected for the speed sensor.The current offset (Set/Drift Setting) is set while LOG or 2AXW is selected for the speed sensor.
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JMA-9100 Instruction Manual 5.3.3 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.3 AIS OPERATION Activate AIS Targets (Activate AIS) Activate an AIS target, and display the target’s vector and make a collision decision. 5.3.3.1 Manual activation (ACT AIS) Activate an AIS target in manual mode to display the vector and heading line. Procedures 1) Put the cursor on the AIS symbol to be activated, and right-click. The setting items for cursor modes will be displayed. 2) Left-click 2. ACT AIS .
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JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.3 AIS OPERATION 5.3.5 Displaying AIS Information [TGT DATA] 5.3.5.1 Types of information displayed There are two modes (simple and detail) to display AIS target information. The display items are determined by the selected mode.
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JMA-9100 Instruction Manual 5.3.5.2 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.3 AIS OPERATION Displaying AIS Target Information [TGT DATA] Procedures 1) Put the cursor on the AIS target of which information is to be displayed , and press the [TGT DATA] key. The information of the selected AIS target will be displayed. i When the numeric data of a target is displayed but the mark is not on the radar display, the target is outside the AIS12 display. 5.3.5.
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JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.3 AIS OPERATION AIS → 2) 9. TT Test Menu Left-click Addressed Message or Broadcast Message . Addressed messages list or broadcast messages list are displayed. Each list shows ship names and message-received time. For an unread message, * 3) is displayed to the left of the item number. Left-click the item button to display the message. The message will appear.
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JMA-9100 Instruction Manual 5.3.5.6 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.3 AIS OPERATION Displaying Data of Lost AIS Target (Display Lost TGT Data) The data of the last-lost AIS target can be displayed. The data of only one target that has been lost most recently can be displayed. Procedures 1) Open the Display Lost Target Data menu by performing the following menu operation. AIS → 8. Display Lost Target Data The data of the last-lost AIS target will be displayed. 5.3.5.
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JMA-9100 Instruction Manual 2) > 5.OPERATION OF TARGET TRACKING AND AIS > 5.3 AIS OPERATION Left-click the item button corresponding to the display method to be set. On : Displays target ID numbers. Off : Hides target ID numbers. Target Track : Displays target ID number with AIS track. Ship’s Name : Displays the ship's name. If there are many tracking targets and their symbol display is confusing, set Target Number Display to off to view the radar display easily.
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JMA-9100 Instruction Manual 5.3.7.3 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.3 AIS OPERATION Creation of AIS Filter (Make AIS Filter) Procedures 1) Open the AIS Filter Setting menu by performing the following menu operation. AIS → 2) Left-click 4. AIS Filter Setting 2. Make AIS Filter . The mode to make an AIS filter will be activated. [1] Setting Range Filter 3) Set a filter range by turning the [VRM] dial, and left-click.
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JMA-9100 Instruction Manual 5.3.7.4 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.3 AIS OPERATION AIS Filter Display On/Off (Filter Display) Procedures 1) Open the AIS Filter Setting menu by performing the following menu operation. AIS → 2) 4. AIS Filter Setting Left-click the item button of 3. Filter Display . Filter Display will be set to on or off. 5.3.7.
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JMA-9100 Instruction Manual 5.3.7.6 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.3 AIS OPERATION Point Filter AIS targets which are not displayed because they are outside the AIS filter or at low priority levels can be activated by giving a higher priority to them. Procedures 1) Put the cursor on the position where a point filter is to be set, and right-click to select the filter to be set. The setting items for cursor modes will be displayed. 2) Left-click 2. ACT AIS .
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JMA-9100 Instruction Manual 5.3.9 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.3 AIS OPERATION Setting Conditions for AIS Alarm (AIS Alarm Setting) Conditions for issuing a Lost alarm and CPA/TCPA alarm for AIS targets can be set. 5.3.9.1 Setting of Condition for Lost Alarm Procedures 1) Open the AIS Alarm Setting menu by performing the following menu operation. AIS → 2) 6. AIS Alarm Setting Left-click the item button of 1. Lost Alarm . The setting items for Lost Alarm will be displayed.
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> JMA-9100 Instruction Manual 5.4 5.OPERATION OF TARGET TRACKING AND AIS > 5.4 DECISION OF TARGETS AS IDENTICAL (Association) DECISION OF TARGETS AS IDENTICAL (Association) 5.4.1 Setting of Function to Decide Targets as Identical (Association) When an AIS target and a tracking target are decided to be identical, an association symbol is displayed for the targets regarded as identical. In this case, the AIS target symbol is automatically activated.
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JMA-9100 Instruction Manual (Association) > 5.OPERATION OF TARGET TRACKING AND AIS > 5.4 DECISION OF TARGETS AS IDENTICAL Once regard as identical, when one of the differences exceed 125% of the set condition, they are regarded as dissidence. i 5.4.3 The setting for this function is common to Association Setting in the AIS Menu. Types of Decision Conditions to be Set Decision conditions 1. Association On / Off (Function to decide targets as identical) 2.
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JMA-9100 Instruction Manual 5.5 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.5 ALARM DISPLAY ALARM DISPLAY Alarm messages for Target Tracking (TT) and AIS functions: Error message Description CPA/TCPA There is a dangerous target. New Target A new target is acquired in the automatic acquisition zone. Lost There is a lost target. REF Target The accuracy of the reference target may be decreased.
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JMA-9100 Instruction Manual 5.5.1 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.5 ALARM DISPLAY CPA / TCPA Alarm Since these alarms may include some errors depending on the target tracking conditions, the navigation officer himself should make the final decision for ship operations such as collision avoidance. Making the final navigation decision based only on the alarm may cause accidents such as collisions.
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JMA-9100 Instruction Manual 5.5.2 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.5 ALARM DISPLAY Alarm for New Target Acquired in Automatic Acquisition Zone (New Target) In setting an automatic acquisition zone, it is necessary to adjust the gain, sea clutter suppression and rain / snow clutter suppression to ensure that target echoes are displayed in the optimum conditions.
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JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.5 ALARM DISPLAY When it is impossible to continue tracking any acquired and tracked target, or the data of AIS target cannot received for a specified time, the Lost Alarm will be generated. The typical causes for alarm generation are shown below, but not limited to the following: • The target echo is very weak. • The target is shadowed by a shore or a large ship and its echo is not received.
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JMA-9100 Instruction Manual 5.6 5.6.1 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.6 TRACK FUNCTION TRACK FUNCTION Past Position (Past POSN) Procedures 1) Left-click the past position display interval unit switching button in the Target Information located at the upper right of the display, and set a desired unit. The past position display interval unit will be set to 2) min or NM .
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JMA-9100 Instruction Manual 5.6.2 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.6 TRACK FUNCTION Target Ship's Tracks (Target Track) This function makes settings for the tracks of tracked targets and AIS targets. The system can display the tracks of up to 20 target ships. 5.6.2.1 Track Color Setting (Target Track Color) Procedures 1) Put the cursor on the tracked target or activated AIS target, and right-click. The setting items for cursor modes will be displayed. 2) Left-click Property .
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JMA-9100 Instruction Manual 5.6.2.3 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.6 TRACK FUNCTION Setting of Target Ship's Track Colors (Target Track Color) You can set either one track color for all targets under tracking, or individual colors for the ships of track numbers 1 to 10. The tracks of ships 11 to 20 are displayed in the same color. If the other ship's track function (Target Track Function) is turned off, the track data of other ships is not saved.
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JMA-9100 Instruction Manual 5.6.2.4 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.6 TRACK FUNCTION Setting of Target Ship's Track Display (Target Track Display) The target track display function can be turned on / off. Choices for track display are displaying / hiding the tracks of all ships and Individual (displaying the tracks of individual ships). Procedures 1) Open the Target Track Display menu by performing the following menu operation. TT → 2. Target Track Setting → 3.
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JMA-9100 Instruction Manual 5.6.2.5 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.6 TRACK FUNCTION Setting of Target Ship's Track Saving Interval (Track Memory Interval) An interval for saving target ship's track data can be set. i This function is not available when the Target Track Function is turned off. Procedures 1) Open the Track Memory Interval menu by performing the following menu operation. TT → 2. Target Track Setting → 2) 4.
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JMA-9100 Instruction Manual 2) > 5.OPERATION OF TARGET TRACKING AND AIS > 5.6 TRACK FUNCTION Left-click the button corresponding to the color of the target tracks to be cleared. The Confirmation Window will appear. 3) Left-click 1. Yes to clear the track line. All the tracks of the selected color will be cleared. [2] Clear of Tracks by Setting Track Number (Clear Track Number) Procedures 1) Open the T.TRK menu by performing the following menu operation. TT → 2. Target Track Setting → 6.
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JMA-9100 Instruction Manual 2) > 5.OPERATION OF TARGET TRACKING AND AIS > 5.6 TRACK FUNCTION Open the File Operations menu by performing the following menu operation. TT → 2. Target Track Setting → 3) 7. File Operations Left-click the item button of 1. Select Card Slot to select a card slot. The setting item for Select Card Slot is switched between Slot1 and Slot2. 4) Left-click the item button of Overwrite. 2. Load Mode The setting item for Load Mode is switched between Overwrite .
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JMA-9100 Instruction Manual 2) > 5.OPERATION OF TARGET TRACKING AND AIS > 5.6 TRACK FUNCTION Open the File Operations menu by performing the following menu operation. TT → 2. Target Track Setting → 3) 7. File Operations Left-click the item button of slot. 1. Select Card Slot to select a card The setting item for Select Card Slot is switched between Slot1 and Slot2. 4) Left-click 4. Save . The Input File Name menu will appear. 5) Input the file name to be saved.
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JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.6 TRACK FUNCTION [3] Erasing File (Erase) Procedures 1) Insert the flash memory card into the card slot. Flash memory card (option) is necessary. 2) Open the File Operations menu by performing the following menu operation. TT → 2. Target Track Setting → 3) 7. File Operations Left-click the item button of slot. 1.
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JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.6 TRACK FUNCTION [4] Displaying File (Card Target Track Display) Procedures 1) Insert the flash memory card into the card slot. Flash memory card (option) is necessary. 2) Open the File Operations menu by performing the following menu operation. TT → 2. Target Track Setting → 3) 7. File Operations Left-click the item button of slot. 1.
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JMA-9100 Instruction Manual 5.7 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.7 TRIAL MANEUVERING (Trial Maneuver) TRIAL MANEUVERING (Trial Maneuver) Attention • Trial maneuvering is to simulate own ship’s course and speed in the conditions that the course and speed of a target ship are unchanged as they are. As the situation is different from any actual ship maneuvering, set values with large margins to CPA Limit and TCPA Limit.
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JMA-9100 Instruction Manual 5.7.1 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.7 TRIAL MANEUVERING (Trial Maneuver) Trial Maneuvering in the True Vector Mode In the True Vector mode, calculations are performed according to the values set by Trial Speed, Trial Course and other features, and the result is displayed as a bold-line that represents the change of own ship's vector as shown in the Fig 5-7 below (an example of the course changed to the right).
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JMA-9100 Instruction Manual 5.7.2 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.7 TRIAL MANEUVERING (Trial Maneuver) 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 Fig 5-8 below (in the same conditions as in the True Vector mode in the previous page), it is seen that the acquired target is a dangerous one because its vector is crossing the CPA RING.
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JMA-9100 Instruction Manual 5.7.3 > 5.OPERATION OF TARGET TRACKING AND AIS > 5.7 TRIAL MANEUVERING (Trial Maneuver) Operation of Trial Maneuvering Function Procedures 1) Open the Trial Maneuver menu by performing the following menu operation. TT → 2) 3. Trial Maneuver Left-click the item button of 1. Trial Function . The Trial Function will be set to on or off. On : The trial maneuvering function is turned on. Off : The trial maneuvering function is turned off.
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JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.7 TRIAL MANEUVERING (Trial Maneuver) Cancel 1) Open the Trial Maneuver menu by performing the following menu operation. TT → 2) 3. Trial Maneuver Left-click the item button of 1. Trial Function . The Trial Function will be set to on or off. Off ： The Trial Function will be set to off.
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JMA-9100 Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS 5－ 58 > 5.
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SECTION 6 TRUE AND FALSE ECHOES ON DISPLAY TRUE AND FALSE ECHOES ON DISPLAY 6.1 RADAR WAVE WITH THE HORIZON ...................................................6-1 6.2 STRENGTH OF REFLECTION FROM THE TARGET ...........................6-3 6.3 SEA CLUTTER AND RAIN AND SNOW CLUTTER ..............................6-5 6.4 FALSE ECHOES ....................................................................................6-9 6.5 DISPLAY OF RADAR TRANSPONDER (SART) ................................
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JMA-9100 Instruction Manual > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.1 RADAR WAVE WITH THE HORIZON The radar operator has a role of interpreting the radar displays to provide his best aid in maneuvering the ship. For this purpose, the operator has to observe the radar displays after fully understanding the advantages and disadvantages that the radar has.
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JMA-9100 Instruction Manual > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.1 RADAR WAVE WITH THE HORIZON D[NM] Height of RADAR Scanner Detective Range Height of Target Fig 6-2: Maximum detection range of a target When the height of own ship’s scanner is 10 m for instance, i. ii. A target that can be detected at the radar range of 64 nm on the radar display is required to have a height of 660 m or more. If the height of a target is 10 m, the radar range has to be approx. 15 nm.
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JMA-9100 Instruction Manual 6.2 > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.2 STRENGTH OF REFLECTION FROM THE TARGET STRENGTH OF REFLECTION FROM THE TARGET The signal intensity reflected from a target depends not only on the height and size of the target but also on its material and shape. The echo intensity from a higher and larger target is not always higher in general. In particular, the echo from a coast line is affected by the geographic conditions of the coast.
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JMA-9100 Instruction Manual TARGET > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.
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JMA-9100 Instruction Manual 6.3 > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.3 SEA CLUTTER AND RAIN AND SNOW CLUTTER SEA CLUTTER AND RAIN AND SNOW CLUTTER In addition to the echo required for observing ships and land, radar video image also includes unnecessary echo, such as reflection from waves on the sea surface and reflection from rain and snow.
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JMA-9100 Instruction Manual CLUTTER > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.3 SEA CLUTTER AND RAIN AND SNOW As shown in Table 6-2, the number of SS increases as the wind speed becomes high and the waves become large. Table 6.2 reveals that detection probability decreases from V (80 %) to NV (less than 50 %) as the number of SS increases.
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JMA-9100 Instruction Manual > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.3 SEA CLUTTER AND RAIN AND SNOW CLUTTER 16 Precipitation 16 mm/hr Pulse width 0.05us 16mm/hr of の降雨時パルス幅 0.05us Precipitation of 4 mm /hr Pulse width 0.05us 4mm/hr の降雨時パルス幅 0.05us 14 Precipitation 16 mm/hr Pulse width 0.8us 16mm/hr of の降雨時パルス幅 0.8us Precipitation of 4 mm /hr Pulse width 0.8us Detection distance while it is raining [NM] 4mm/hr の降雨時パルス幅 0.
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JMA-9100 Instruction Manual CLUTTER c. > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.3 SEA CLUTTER AND RAIN AND SNOW Coping with sea clutter and rain and snow clutter When the weather is bad and the ocean is rough, the use of an S band radar is effective because the radar is not influenced by sea clutter so much and attenuation due to rain drops is small.
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JMA-9100 Instruction Manual 6.4 > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.4 FALSE ECHOES FALSE ECHOES The radar observer may be embarrassed with some echoes that do not exist actually. These false echoes appear by the following causes that are well known: a. Shadow When the radar scanner is installed near a funnel or mast, the echo of a target that exists in the direction of the funnel or mast cannot appear on the radar display because the radar beam is reflected on the funnel or mast.
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JMA-9100 Instruction Manual > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.4 FALSE ECHOES c. False Echo by Secondary Reflection When a target exists near own ship, two echoes from the single target may appear on the radar display. One of those echoes is the direct echo return from the target and the other is the secondary reflection return from a mast or funnel that stands in the same direction as shown in Fig 6-7.
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JMA-9100 Instruction Manual > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.4 FALSE ECHOES For instance, assuming that the pulse length is MP3 (on the repetition frequency of 1400 Hz), the first pulse is reflected from a target at about 58 NM or more and received during the next pulse repetition time. In this case, a false echo (second time echo) appears at a position that is about 58 NM shorter than the actual distance.
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JMA-9100 Instruction Manual 6.5 > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.5 DISPLAY OF RADAR TRANSPONDER (SART) DISPLAY OF RADAR TRANSPONDER (SART) The SART (Search and rescue Radar Transponder) is a survival device authorized by the GMDSS (Global Maritime Distress and Safety System), which is used for locating survivors in case that a distress accident occurs at sea. The SART is designed to operate in the 9 GHz frequency band.
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JMA-9100 Instruction Manual > 6.TRUE AND FALSE ECHOES ON DISPLAY > 6.5 DISPLAY OF RADAR TRANSPONDER (SART) [Example of Display］ Land SART code Other Ships Position of SART Attention • When the SART function is set to ON, small targets around own ship will disappear from the radar display. So it is necessary to exercise full surveillance over the conditions around own ship by visual watch in order to avoid any collision or stranding.
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JMA-9100 Instruction Manual > 6.TRUE AND FALSE ECHOES ON DISPLAY 6－ 14 > 6.
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SECTION 7 SETTINGS FOR SYSTEM OPERATION SETTINGS FOR SYSTEM OPERATION 7.1 SETTINGS AT INSTALLATION .............................................................7-1 7.1.1 How to Open the Serviceman Menu（Service Man Menu）.........7-1 7.1.2 GYRO I/F Setting .............................................................................7-2 7.1.3 Tuning (Tune Adjustment) .............................................................7-5 7.1.4 Bearing Adjustment ......................................................
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7.2.7 Date Time Setting ..........................................................................7-20 7.2.8 Input Installation Information .......................................................7-21 7.2.9 Setting the Alarm System .............................................................7-22 7.3 ADJUSTMENT ......................................................................................7-26 7.3.1 Noise Level Adjustment (Noise Level) ........................................7-26 7.3.
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JMA-9100 Instruction Manual 7.1 > 7.SETTINGS FOR SYSTEM OPERATION > 7.1 SETTINGS AT INSTALLATION SETTINGS AT INSTALLATION This section describes the electrical adjustment procedures to be performed by service engineers during system installation. The bearing adjustment value is saved to non-volatile memory in the scanner. Other settings are saviedto non-volatile memory in the radar process unit. • Do not carry out the adjustments of the equipment except authorized service persons.
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JMA-9100 Instruction Manual 7.1.2 > 7.SETTINGS FOR SYSTEM OPERATION > 7.1 SETTINGS AT INSTALLATION GYRO I/F Setting a. Gyro Settings (STEP or SYNC) The GYRO I/F circuit of the system is designed to be compatible with most types of gyro compasses by simply setting the switches.
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JMA-9100 Instruction Manual 4) > 7.SETTINGS FOR SYSTEM OPERATION > 7.1 SETTINGS AT INSTALLATION Set the DIP switch S2. The items to be set are listed below. For the setting, refer to Table 7-2：Gyro and Log Select Switches (S2 DIP Switch). １ ON 5) ２３４ OFF OFF OFF ５６７８ ON OFF ON OFF Confirm the settings of the DIP switch S10. The DIP switch must be set as shown below. Do not change any of the settings. １２３４５６７８ OFF OFF OFF OFF OFF OFF OFF OFF 6) Set the jumper TB105.
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JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.
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JMA-9100 Instruction Manual 7.1.3 > 7.SETTINGS FOR SYSTEM OPERATION > 7.1 SETTINGS AT INSTALLATION Tuning (Tune Adjustment) Adjust the tuning control for the transmitter and receiver. The turning control should be adjusted when the system is installed or when the magnetron is replaced. Procedures 1) Set a range of 48 NM or more. 2) Open the Serviceman Menu. 3) Perform the following menu open procedure to open the Tune Adjustment menu. 1. Adjust Menu → 4) 1.
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JMA-9100 Instruction Manual 4) > 7.SETTINGS FOR SYSTEM OPERATION > 7.1 SETTINGS AT INSTALLATION Adjust the tune indicator adjustment value by operating the ＋ / － button so that the tune indicator bar at the upper left of the display reaches a point of 80 to 90% of the maximum. For inputs to the value input screen, refer to Section 3.3.4.3 "Increasing or decreasing a numeric value". 5) Move the cursor onto the i 7.1.3.2 ENT button, and left-click .
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JMA-9100 Instruction Manual 7.1.4 > 7.SETTINGS FOR SYSTEM OPERATION > 7.1 SETTINGS AT INSTALLATION Bearing Adjustment Make adjustment so that the bearing of the target measured with the ship’s compass matches the bearing of the target echo on the radar display. Procedures 1) Select H Up (PROC) to for the bearing presentation. Set video processing . PROC Off 2) Measure the bearing of an adequate target (e.g., a ship at anchor, a breakwater, or a buoy) relative to own ship's heading.
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JMA-9100 Instruction Manual 3) > 7.SETTINGS FOR SYSTEM OPERATION > 7.1 SETTINGS AT INSTALLATION Perform the following menu open procedure to open the Range Adjustment menu. 1. Adjust Menu → 3. Range Adjustment For inputs to the value input screen, refer to Section 3.3.4.3 "Increasing or decreasing a numeric value". 7.1.6 4) Adjust the range adjustment value by operating the ＋ / － button so that the target measured in step 1) falls in the correct range.
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JMA-9100 Instruction Manual 7.1.7 > 7.SETTINGS FOR SYSTEM OPERATION > 7.1 SETTINGS AT INSTALLATION Setting of True Bearing Value If GYRO I/F is used to input a gyro signal, the true bearing value indicated by the master gyro does not match the value indicated by the radar equipment only in a rare case. In this case, perform the following procedure to adjust the true bearing value of the radar equipment to the value of the master gyro.
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JMA-9100 Instruction Manual 7.1.9 > 7.SETTINGS FOR SYSTEM OPERATION > 7.1 SETTINGS AT INSTALLATION Setting of CCRP (CCRP Setting) Set the own ship's CCRP location, radar antenna installation location, and GPS installation location. CCRP： Up to four locations can be input. (One location selected when used) Radar antenna: Up to eight radar antennas can be input. (Automatically selected in response to ISW operation) GPS： Up to four locations can be input.
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JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.
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JMA-9100 Instruction Manual 7.2 > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS SETTINGS This section describes the electrical adjustment procedures to be performed by service engineers during system installation. • Do not carry out the adjustments of the equipment except authorized service persons. If wrong setting is carried out, this may cause unstable operation. • Do not carry out the adjustments during navigation.
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JMA-9100 Instruction Manual 3) > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS Set the baud rate of the port to be set. 1. COMPASSa： 4800(NMEA)/9600(NSK)/38400(fast NMEA)b bps 2. MAINTENANCE/LOG： 1200/4800/9600/38400 bps 3. NAV1： 1200/4800/9600/38400 bps 4. NAV2： 1200/4800/9600/38400 bps 5. ALARM： 1200/4800/9600/38400 bps 6. JARPAc： 1200/4800/9600/38400 bps 7. AIS： 1200/4800/9600/38400 bps 8. ARPAd： 1200/4800/9600/38400 bps 9. COM： 1200/4800/9600/38400/115200 bps a. b. c. d. 7.2.1.
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JMA-9100 Instruction Manual 7.2.1.3 > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS Reception Sentence Setting (RX Sentence) Set signal sentences to be received from sensors. The system is factory-set for using all sentences. To receive only specified sentences, select No Use for sentences which are not necessary. Procedures 1) Open the Serviceman Menu. 2) Perform the following menu open procedure to open the RX Sentence setting menu. 2. Installation Menu → 5. COM Port Setting → 3) 3.
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JMA-9100 Instruction Manual 7.2.1.4 > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS Transmission Port Setting (TX Port) For each sentence, set a communication port through which signals are transmitted to sensors. Procedures 1) Open the Serviceman Menu. 2) Perform the following menu open procedure to open the TX Port setting menu 2. Installation Menu → 5. COM Port Setting → 3) 4. TX Port Select the communication port through which the sentence to be set is output.
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JMA-9100 Instruction Manual 7.2.2 > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS Sector Blank Setting (Sector Blank) In order not to display radar echoes, set a sector range and stop transmission in the bearing range. Three types of sectors can be created. The sector blank function operates in the relative bearing with the bow as the benchmark. 7.2.2.1 Sector Blank Function On/Off (Sector1,2 and 3) Procedures 1) Open the Serviceman Menu.
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JMA-9100 Instruction Manual 4) > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS Set the starting azimuth of the sector blank by operating the [EBL] dial, and left-click the ENT button. The start angle of the sector blank will be set. 5) Set the ending azimuth of the sector blank by operating the [EBL] dial, and left-click the ENT button. The end angle of the sector blank will be set. 7.2.3 TNI Blank Setting (TNI Blank) Set a sector range and stop tuning operation in the bearing range.
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JMA-9100 Instruction Manual 2) > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS Perform the following menu open procedure to open the Sector Blank setting menu. 2. Installation Menu → 3) 9. Next → 2. TNI Blank Left-click the 2. Make Sector button in the menu. The selected sector blank will be made. 4) Set the starting azimuth of the TNI blank by operating the [EBL] dial, and left-click the ENT button. The start angle of the TNI blank will be set.
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JMA-9100 Instruction Manual 7.2.5 > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS Slave Mode Setting (Master/Slave) Place the system in the Slave mode when it is to be operated as the sub-display that displays radar echoes by using radar signals from other radar equipment. The input value of externally input bearing pulses can be set. The system can set 2048 pulses or 4096 pulses. 7.2.5.1 Slave Mode Setting (Master/Slave) Procedures 1) Open the Serviceman Menu.
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JMA-9100 Instruction Manual 7.2.6 > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS Language Setting (Language) The system is designed to switch between display languages, Japanese and English. Procedures 1) Open the Serviceman Menu. 2) Perform the following menu open procedure to open the language setting menu. 2. Installation Menu → 3) 8. Language Select the language to be used. 1. English 2. Japanese a 3. Other a.
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JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS 2)-2. LMT Date Input the date in local time. 2)-3. LMT Time Input the date in local time. 2)-4. Time Zone Input the time-zone difference between the universal time and local time. 2)-5. Display Style Set one of the following date display formats. YYYY-MM-DD 例：2007-12-31 MMM DD, YYYY 例：DEC 31, 2007 DD MMM , YYYY 例：31 DEC, 2007 2)-6.
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JMA-9100 Instruction Manual > > 7.SETTINGS FOR SYSTEM OPERATION 7.2 SETTINGS 7.2.9 Setting the Alarm System 7.2.9.1 Setting the reset interval (Reset Interval) This function enables the control of WMRST terminal (on the terminal board circuit).The reset signal is turned on when operation in a set period of time. Procedures 1) Open the Serviceman Menu. 2) Perform the following menu open procedure to open the Reset Interval menu. 2. Installation Menu → 6. Alarm System → 1.
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JMA-9100 Instruction Manual 7.2.9.3 > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS Setting the relay output (Relay Output) This function enables the control of ARPAALM terminal (on the terminal board circuit). Procedures 1) Open the Serviceman Menu. 2) Perform the following menu open procedure to open the Relay Output menu. 2. Installation Menu → 6. Alarm System → 3) Left-click the 2. Relay Output 1. Relay Output Mode button in the menu. The Relay Output mode is switched.
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JMA-9100 Instruction Manual 2) > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS Perform the following menu open procedure to open the ALR Output menu. 2. Installation Menu → 6. Alarm System → 3) 2. Relay Output Click the item button corresponding to the item to be changed. The item is turned on / off. 7.2.9.5 On : The ALR sentence is output when alarm have issued. Off : The ALR sentence is not output when alarm have issued. 1. System Alarm : The internal alarm. 2.
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JMA-9100 Instruction Manual 4) > 7.SETTINGS FOR SYSTEM OPERATION > 7.2 SETTINGS Click the item button corresponding to the item to be changed. The item is switched. Audio → On : The alarm sound is not stopped acknowridgement have received. when → Off : The alarm sound is stopped acknowridgement have received. when : Setting of alarm indication. Indication → Lightning : The alarm indication brinking is stopped when acknowridgement have received.
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JMA-9100 Instruction Manual 7.3 > 7.SETTINGS FOR SYSTEM OPERATION > 7.3 ADJUSTMENT ADJUSTMENT This section describes the electrical adjustment procedures to be performed by service engineers during system installation. Do not carry out the adjustments of the equipment except authorized service persons. If wrong setting is carried out, this may cause unstable operation. Do not carry out the adjustments during navigation.
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JMA-9100 Instruction Manual 7.3.1.2 > 7.SETTINGS FOR SYSTEM OPERATION > 7.3 ADJUSTMENT Noise Level Adjustment Mode (Setting Mode) A noise level is factory-adjusted while this mode is turned on. Procedures 1) Open the Serviceman Menu. 2) Perform the following menu open procedure to open the noise level adjustment menu. 9. RADAR/TT Initial Setup → 1. Signal Processing → 2. Setting Mode The noise level adjustment mode is switched between on and off.
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JMA-9100 Instruction Manual > 7.SETTINGS FOR SYSTEM OPERATION > 7.3 ADJUSTMENT 9. RADAR/TT Initial Setup → 2. TT → 1. Vector Constant The window for setting vector constants will appear. 3) Input the value to be set. For how to input numeric data on the numeric value input screen, see Section 3.3.4 "Operation on Numeric Value, Latitude / Longitude and Character Input menu". 7.3.2.
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JMA-9100 Instruction Manual 7.3.3 > 7.SETTINGS FOR SYSTEM OPERATION > 7.3 ADJUSTMENT Main Bang Suppression Level Adjustment (MBS) Main Bang Suppression is adjusted to suppress main bang, a reflection signal from 3D circuit including wave guide tube, that generally appears as a circular image focusing on the center of the radar display. Optimum adjustment allows main bang image to remain lightly on the display. Do not change this adjusted level carelessly.
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JMA-9100 Instruction Manual 7.3.3.2 > 7.SETTINGS FOR SYSTEM OPERATION > 7.3 ADJUSTMENT Adjustment of Main Bang Suppression Area (MBS Area) Procedures 1) Open the Serviceman Menu. 2) Perform the following menu open procedure to open the MBS Area adjustment menu. 9. RADAR/TT Initial Setup → 3. MBS → 3) • • • • • • 4) 2. MBS Area Set the radar as follows: Set the radar range to 0.125 NM. Set the radar video enhance function (ENH) to OFF. Set the image processing (PROC) to OFF.
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JMA-9100 Instruction Manual 7.3.4 > 7.SETTINGS FOR SYSTEM OPERATION > 7.3 ADJUSTMENT Adjustment of Performance Monitor After replacement of either of the following units, adjust the performance monitor according to the procedures in this section: • Performance monitor • Antenna unit 7.3.4.1 Transmission Monitor Adjustment (MON Adjustment) Adjust the circuit for monitoring the transmission performance of the radar equipment.
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JMA-9100 Instruction Manual 7.3.4.2 > 7.SETTINGS FOR SYSTEM OPERATION > 7.3 ADJUSTMENT Reception Monitor Adjustment (MON Indicator Adjustment) Adjust the circuit for monitoring the reception performance of the radar equipment. Procedures 1) If the performance monitor is equipped with an inter-switch function, set it as the master display unit. 2) Open the Serviceman Menu. 3) Perform the following menu open procedure to open the performance monitor Indicator Adjustment menu. 1.
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JMA-9100 Instruction Manual 7.4 > 7.SETTINGS FOR SYSTEM OPERATION > 7.4 MAINTENANCE MENU MAINTENANCE MENU This item is provided for equipment maintenance, including settings of antenna safety switch, master reset, etc. Only our service engineers are to make the adjustment. Neglecting this caution may cause accidents and failures. Do not make the adjustments during navigation. Otherwise, adjustments may affect the radar functions, causing accidents and failures. 7.4.
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JMA-9100 Instruction Manual 7.4.2 > 7.SETTINGS FOR SYSTEM OPERATION > 7.4 MAINTENANCE MENU Initialization of Memory Area(Area Initial) If system operation is unstable, it may be stabilized by initializing the memory area. To initialize the memory area, follow the procedure in this section. The memory area is reset to the factory setting when initialized. 7.4.2.1 Partial Master Reset Procedures 1) Open the Serviceman Menu.
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JMA-9100 Instruction Manual 7.4.3 > 7.SETTINGS FOR SYSTEM OPERATION > 7.4 MAINTENANCE MENU Save of Internal Memory Data (Card1/2) The system can save internal memory data such as item settings in all menus onto a flash memory card. If the radar processing circuit in the system has been replaced, the set values before the circuit replacement can be restored by reading the set values you saved before the replacement.
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JMA-9100 Instruction Manual 7.4.4 > 7.SETTINGS FOR SYSTEM OPERATION > 7.4 MAINTENANCE MENU Restoration of Scanner Unit Operation Time (TXRX Time) The system adds up the following operation time and contains it in the scanner unit: • Transmission time • Motor run time Clear the above total time when the magnetron or scanner unit motor is replaced. 7.4.4.1 Clear of Motor Run Time (Clear TX Time) Clear the scanner's motor run time.
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JMA-9100 Instruction Manual 7.4.4.3 > 7.SETTINGS FOR SYSTEM OPERATION > 7.4 MAINTENANCE MENU Save of Scanner Unit Time (TXRX To Display Unit) Save the following scanner unit time data from the scanner unit into the display unit. Perform the following procedure of 7.4.4.4 to inherit the scanner unit time data when the TXRX's internal control circuit is replaced. Procedures 1) Open the Serviceman Menu. 2) Perform the following menu open procedure to open the TXRX to Display Unit menu. 3.
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JMA-9100 Instruction Manual 7.4.5 > 7.SETTINGS FOR SYSTEM OPERATION > 7.4 MAINTENANCE MENU Update of Character String Data (String Data Update) The system is designed to transfer and display external character strings as the second language display. The second language is factory-set to "Japanese." Ask our agent or sales department for the supply of character strings to be updated.
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SECTION 8 COUNTERMEASURES FOR TROUBLE AND ADJUSTMENT COUNTERMEASURES FOR TROUBLE AND ADJUSTMENT 8.1 ROUTINE MAINTENANCE ....................................................................8-1 8.2 MAINTENANCE ON EACH UNIT ...........................................................8-2 8.2.1 Scanner Unit NKE-1125/1129/1130/1139/2103/2254 ....................8-2 8.2.2 Wave Guide Tube (JMA-9123-7XA/9XA) ........................................8-4 8.2.3 Coaxial Cable (JMA-9133-SA) ...............................
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8.4.1 Parts Required for Periodic Replacement ..................................8-13 8.4.2 Replacement of magnetron ..........................................................8-13 8.4.2.1 Scanner Unit NKE-1130 ............................................................8-14 8.4.2.2 Scanner Unit NKE-2254, NKE-1125 .......................................8-16 8.4.2.3 Scanner Unit NKE-2103 .........................................................8-19 8.4.2.4 Transmitter Receiver Unit NTG-3230 ...................
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JMA-9100 Instruction Manual 8.1 > 8.COUNTERMEASURE FOR TROUBLE ... > 8.1 ROUTINE MAINTENANCE ROUTINE MAINTENANCE • Never carry out internal inspection or repair work of the equipment by users. Inspection or repair work by unauthorized personnel may result in fire hazard or electric shock. Ask the nearest branch, business office or a dealer for inspection and repair. • Turn off the main power before maintenance work. Otherwise, an electric shock may result.
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JMA-9100 Instruction Manual 8.2 8.2.1 > 8.COUNTERMEASURE FOR TROUBLE ... > 8.2 MAINTENANCE ON EACH UNIT MAINTENANCE ON EACH UNIT Scanner Unit NKE-1125/1129/1130/1139/2103/2254 • Turn off the main power source before starting maintenance. Otherwise, an electric shock or injury may be caused. • Do not touch the radiator. Even if the power is turned off, the radiator may be rotated by the wind. • Turn "OFFi" the safety switch to stop the scanner unit. (Refer to Section 1.4 "EXTERIOR DRAWINGS".
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JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... 4-M8 (stainless steel) bolt Tightening torque : 120 to 150 kgf/cm > 8.2 MAINTENANCE ON EACH UNIT 8-M8 (stainless steel) bolt Tightening torque : 120 to 150 kgf/cm ⑦ ① ③ ① ③ ⑤ ⑥ ④ ② ④ ② Bolt Tightening Procedure of NKE-1125/1129/2254 Cover ④ ③ ② ① ⑧ Bolt Tightening Procedure of NKE-1130 /1139 Cover 4-M8 (stainless steel) bolt Tightening torque : 120 to 150 kgf/cm Bolt Tightening Procedure of NKE-2103 Cover b.
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JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.2 MAINTENANCE ON EACH UNIT c. Rotating section c-1 Supply Oil Seal When there is not a grease nipple, the replenishment of grease oil is unnecessary. Remove the cap on the grease nipple located on the side of the X band radar or on the front of S band radar at which the radiator is supported, and grease with a grease gun.Make the oiling every six months.
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JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.2 MAINTENANCE ON EACH UNIT • Do not apply strong shock to the coaxial cable by striking it with a tool or hammering it. Otherwise, an open circuit failure may result. • Do not place anything heavy on the coaxial cable.Otherwise, an open circuit failure may result. • Do not twist or pull the coaxial cable. For details, refer to the coaxial cable installation procedure for S-band radars. 8.2.
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JMA-9100 Instruction Manual 8.3 > 8.COUNTERMEASURE FOR TROUBLE ... > 8.3 PERFORMANCE CHECK PERFORMANCE CHECK Make operational check on the radar equipment regularly and if any problem is found, investigate it immediately. Pay special attention to the high voltage sections in checking and take full care that no trouble is caused by any error or carelessness in measurement. Take note of the results of checking, which can be used effectively in the next check work.
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JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.3 PERFORMANCE CHECK Procedures 1) Perform the following menu open procedure to open the Test Menu. Main → 2) 9. Test Menu Select the items to be checked. 1. Self Test 8.3.1.1Self-diagnosis function (Self Test) 2. Monitor Test 8.3.1.2Monitor Test 3. Keyboard Test 8.3.1.3Operation Unit Test (Keyboard Test) 4. MON Display 8.3.1.4Check of the Performance Monitor (MON Display) 5. System Alarm Log 8.3.1.
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JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.3 PERFORMANCE CHECK [2] TXRX Test Checks for signals from the scanner. Safety Switch Scanner's safety switch check AZI Pulse Scanner rotation signal check HL Pulse Heading line signal check MH Current Check on the load current of high voltage in the modulator Trigger Radar trigger signal check Video Radar video check When no abnormality is found, OK is displayed. When an abnormality is found, NG is displayed.
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JMA-9100 Instruction Manual 8.3.1.2 > 8.COUNTERMEASURE FOR TROUBLE ... > 8.3 PERFORMANCE CHECK Monitor Test Checks for the display. The test pattern will be shown on the display. 1. Pattern1 ： All colors are filled with white. 2. Pattern2 ： A white box is displayed on the black background of 1280 × 1024dot. 3. Pattern3 ： Displays rectangle X 2, circle X 2, and cross-shape X13 (white lines on the black background). 4.
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JMA-9100 Instruction Manual 8.3.1.4 > 8.COUNTERMEASURE FOR TROUBLE ... > 8.3 PERFORMANCE CHECK Check of the Performance Monitor (MON Display) Displays the performance monitor status. *Transmitter System Transmitter system attenuation value check. → *Receiver System Attenuation Value Receiver system attenuation value check. → MON Pattern Range → Attenuation Value Procedures 1) Turn the [VRM] dial to make adjustments so that the farthest point of the performance monitor pattern.
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JMA-9100 Instruction Manual 8.3.1.6 > 8.COUNTERMEASURE FOR TROUBLE ... > 8.3 PERFORMANCE CHECK System Information Displays the current system information. 8.3.1.7 Indicator Processor software version information TXRX Scanner software version information System No.
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JMA-9100 Instruction Manual 8.4 > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS REPLACEMENT OF MAJOR PARTS The system includes parts that need periodic replacement. The parts should be replaced as scheduled. Use of parts over their service life can cause a system failure. • Turn off the main power source before replacing parts. Otherwise, an electric shock or trouble may be caused.
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JMA-9100 Instruction Manual 8.4.1 > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS Parts Required for Periodic Replacement Here are parts required for periodic replacement Part name Interval Radar model Part type Part code 1.
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JMA-9100 Instruction Manual 8.4.2.1 > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS Scanner Unit NKE-1130 [Required tools] • A Phillips screwdriver for 4 mm screw • A Phillips screwdriver for 6 mm screw • A wrench (width across flats 13 mm, for M8 screws) [Replacement procedure] 1) Before starting part replacement work, turn off the safety switch of the scanner unit. The safety switch is located on the rear (stern) side.
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JMA-9100 Instruction Manual 3) > 8.COUNTERMEASURE FOR TROUBLE ... Remove the cover on the left (port) side and check that there is no remaining electric charge in the modulation high-voltage circuit board. > 8.4 REPLACEMENT OF MAJOR PARTS Magnetron Remove the two screws (M4) holding the magnetron cables (both yellow and green). Remove the green cable. Remove the yellow cable. Remove the two screws. 4) Remove the eight screws (M6) to remove the fixture holding the magnetron.
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JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS 1) Turn on the power supply for the radar. Allow sufficient time for the radar to be preheated (about 20 to 30 minutes / bring the radar unit to STBY mode). 2) Start emitting radio waves from the short pulse range and gradually change the emissions to the long pulse range. Open the service engineer menu to perform tuning adjustment.
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JMA-9100 Instruction Manual 2) > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS Loosen the hexagonal bolts (4) and remove the pedestal cover. Make sure that there is no foreign matter or dust adhered to the gasket when you put the cover on. Loosen the four hexagonal bolts. （ 4 When the starboard side cover is removed 3) Loosen the screws (four M4 screws) to remove the magnetron cover. Magnetron cover Loosen the four screws.
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JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS Use a non-magnetic screwdriver. If the magnetron comes into contact with any metal (tool), its performance may deteriorate. 6) After having replaced the magnetron, reassemble the unit by following the disassembly procedure in the reverse order. Do not forget to tighten the bolts and screws, and do not forget to reconnect the cables.
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JMA-9100 Instruction Manual 8.4.2.3 Scanner Unit > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS NKE-2103 [Required tools] P h i l l i p s s c r e w d r i v e r f o r 4 m m s c r e w • A • A Phillips screwdriver for 6 mm screw • A wrench (width across flats 13 mm, for M8 screws) 1) Before starting part replacement work, turn off the safety switch on the bottom of the scanner unit. Bow direction Turn off the safety switch.
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JMA-9100 Instruction Manual 1) > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS Loosen the screws (four M4 screws), remove the transmitter-receiver unit cover, and remove the cables connected to the transmitter-receiver unit (ten cables). Slide the cover of the transmitter-receiver unit to remove it. Slide the cover. Loosen the four screws. 2) Loosen the bolts (five M5 bolts) and remove the transmitter-receiver unit. Slide the transmitter-receiver unit upward to remove it.
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JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS Do not forget to tighten the bolts and screws, and do not forget to reconnect the cables. Extreme care should be taken to connect the leads (yellow and green) to the magnetron for prevention of contact with other parts or the casing. [Operation check] After you have completed the replacement work, follow the procedure below to check the operation. 1) Turn on the power supply for the radar.
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JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS [Replacement procedure] 1) Loosen the four screws and remove the cover. The screws are slotted captive screws.Use a flatblade screwdriver. Remove the four screws. 2) Remove the screws (six M4 screws) and slide the modulator cover to the right to remove it. Modulator cover Loosen the six screws.
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JMA-9100 Instruction Manual 3) > 8.COUNTERMEASURE FOR TROUBLE ... Remove the screws holding the cables (two M4 screws) and the bolts holding the magnetron (eight M6 screws) and remove the metal fitting and the magnetron. > 8.4 REPLACEMENT OF MAJOR PARTS Modulator Yellow cable Remove the two screws. Use a non-magnetic screwdriver. If the magnetron comes into contact with any metal (tool), its performance may deteriorate. Green cable Remove the eight bolts.
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JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS Adjust the setting in the service engineer menu until the tuning indication bar on the display unit reaches the 8th calibration marking. Check in the service engineer menu that the magnetron current is between the 6th and 9th calibration markings. 4) Finally, initialize the transmission time in the service engineer menu. 8.4.2.
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JMA-9100 Instruction Manual 2) > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS Loosen the upset head bolt (one M4 bolt), and slide the tightening metal fitting, located between the modulator and the circulator, to remove it. Modulator The magnetron is installed within the modulator. Tightening metal fitting Circulator Remove the screw. 3) Loosen the inside screws of the modulator (four M4 screws).
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JMA-9100 Instruction Manual 4) > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS Remove the cables connected to the modulator and the screws on the outside of the modulator (four M4 screws) and slide the modulator to the right to remove it. Modulator Remove the four outside screws. 5) 6) Remove the screws (six M4 screws) and take off the modulator cover.
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JMA-9100 Instruction Manual 7) > 8.COUNTERMEASURE FOR TROUBLE ... Be careful to attach the colored cables (yellow and green) to the correct connections on the replacement magnetron. After having replaced the magnetron, reassemble the unit by following the disassembly procedure in the reverse order. > 8.4 REPLACEMENT OF MAJOR PARTS Pulse transformer Green cable Yellow cable Magnetron Do not forget to tighten the bolts and screws, and do not forget to reconnect the cables.
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JMA-9100 Instruction Manual 8.4.3 > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS Replacement of Motor Replacement of motor must be made by specialized service personnel. For details, refer to Service Manual. 8.4.3.1 Scanner Unit NKE-1139/1130 [Required tools] • A wrench (width across flats 17 mm, for M10 screws) • A Phillips screwdriver for 4 mm screw • Tools for removing the cover from the scanner unit.(Refer to the 8.4.2.
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JMA-9100 Instruction Manual 2) > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS Remove the cover on the left (port) side and remove the five screws (M5) to remove the fixture. Remove the metal fixture. Remove the five screws. 3) Remove the four hexagonal screws (M10x40, SW10, and W10) that hold the motor from both the right and left sides to remove the motor. Remove the four hexagonal screws (two screws on each side) Remove the motor.
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JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS [Operation check] After you have completed the replacement work, follow the procedure below to check the operation. 1) Turn on the radar power supply. After the countdown is completed, start emission and check that the radar image appears without error. Check that you do not hear any unusual sound when the motor starts, rotates, and stops.
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JMA-9100 Instruction Manual 4) 5) > 8.COUNTERMEASURE FOR TROUBLE ... Attach the installation plate to the replacement motor. Do not forget to tighten the hexagonal bolts to an appropriate torque (210 kgf-cm) so they are free of looseness. Install the motor into the scanner unit. Press the motor against the protrusions of the arm fixed to the motor on which the arm extends through the wall of the casing, adjust it to minimize backlash, and fix it in place. > 8.
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JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4 REPLACEMENT OF MAJOR PARTS [Replacement procedure] 1) Open the upper cover (see Section 8.4.2.3) to remove the transmitter-receiver unit. Remove the four bolts. 2) Remove the hexagonal bolts (four M6 bolts) and remove the motor. Grease the gear wheel of the replacement motor and place it in the casing. Do not forget to tighten the hexagonal bolts to an appropriate torque (72 kgf-cm) so they are free of looseness.