DANGER! HIGH VOLTAGE M NEVER OPEN THE UNIT This product contains high voltages that could be FATAL . This product has no user serviceable parts inside All repairs and adjustments MUST be made by 2 qualified electronics repair persona. N HIGH VOLTAGES High voltages of up 105,000 volts are used in radar equipment. Although prudent measures for safety have been adopted, sufficient care must be taken in the-operation, maintenance and adjustment of the equipment.
IMPORTANT EXPLICIT DEFINITIONS * READ THIS INSTRUCTION MANUAL CAREFULLY before attempting operation. 1t you:have any-questions regarding the operation:of til free to contact your nearest-authorized com: Dealer or:Service Center: * SAVE THIS INSTRUCTION MANUAL This instruction manual contains important: safety and operating instructions for the MR-40. The (hollowing explicit definitions apply to spinsterish. son manual Personal injury; fire: hazard: or electric shockproof.
TABLE OF CONTENTS DANGER! HIGH VOLTAGE .. i RADIATION HAZARD i Gl IMPORTANT . INTRODUCTION Lo i EXPLICIT DEFINITIONS i it PRECAUTIONS e UNPACKING .o sin st LA TABLE OF CONTENTS ot 1 1 CONTROL FUNCTIONS SCREEN DESCRIPTION 3 BASIC OPERATION: . training 31 Checking the installation 321 Power ONJOEF.LL 33 Operating procedure Sinhalese @iy 4. DISTANCE AND DIRECTION MEASUREMENTS 441 Distance measurement 4.2 Direction measurement. 5. ALARM SETTING i 6.
O POWER SWITCH [POWER] (p. 5) Turns the power ON and OFF: * The Initial Cressida droppers for 2 mind flowerpot has been Horned ON: *To turn:OFF the power. push: and hold the switch for 2. 580 @ TX SWITCH [TX] (pgs: 4, 5) Selects: PP (Plan: Position stand-by: Screen. FICA SWITCH [ETC] (pgs, 4..10) Suppresses some precipitation cuter, *Small pips may be suppressed when [FTC Es ON: @ INTERFERENCE REDUCTION SWITCH [IR] Reduces eliminators interference from-ocher radar devices: @ RING SWITCH [RING] (pgs. 4.
€ SCREEN RANGE READOUT (pgs. 2,6} Shows the maximization ot the displayed screen. * The palatial-tunction selector selects ranges from (.25 NM 10:24 NM.. @ RING RANGE READOUT (pgs. 2.7) Shows the interval range of:the fixed ring. #Appears when [HING S pushed. ~:This range varies with the screen range NM; 10810 NM: @ INDICATOR (p. 2) “HDG appears when selecting the head-up screen arid: NI appears when 'selecting the: north screen: *The port-up can be used only when d compass interface with. “N 31" data.
Bl 3 BASIC OPERATION 3-1 Checking the installation Before turning power ON: be'sure gl the connections are'complete: The following check list may be helpful for: confirmations: * Check list 1) The vent.tube on the radiomen base must be.correctly. set on the stern side. 4 fixing bolt of the radiomen beige must be fully tightened. cable must bused foredoom base connection; Ay The cable must be securely attached to.
B 4 DISTANCE AND DIRECTION MEASUREMENTS 4-1 Distance measurement Two measurement procedures are available on the unit Operating them separately or jointly js possible; | Displays: fixed ring. | Suitable: for: rough estimation iof Jan [ targets. Displays & variable rand marker and | uses: the ‘multi function: selector as:a A range selector, Suitable for accurate measurement of a target: * Using [RING] Pugh [RING] to display: or clear the fixed ring.
DISTANCE AND DIRECTION MEASUREMENTS 4 4-2 Direction measurement The unit has an Electronic Bearing Line to indicate the target's direction:from your ship. * Using [EBL] 1) Push {EBL] 1o use the multi-function selector:as & direction selector; 2) Rotate the selector to adjust the bearing line to the ‘desired target.
5 ALARM SETTING The unit has an alarm function 1o protect your ship from collisions: i ships.
INTERFERENCE REDUCING Basically there are types noninterference which:may hinder radar reception {gea clutter; schmoes waves and precipitation interference). 6-1 Sea clutter interference 6 Bea clutter appears in the center of the screen as.a large bumper 'of 'small echoes.
./ 11 FALSE ECHOES False etudes may appear on:the screen at: positions where there is no target. These echoes may appear genitalia vessel, bridge, or tank is o proximity. Opera: tors: should: be familiar: with: the ' effects ‘of these phenomena: [some cases; shoes can be traduced. 7-1 Side-lobe echoes Radiation: can escape on each side of the beam inside:the lobes.: 1t a target refracts this radiation; it will:be displayed on the screen as-an echo.
FALSE ECHOES 7 7-3 Multiple echoes Multiple echoes may appear when short-range and The multiple echoes wiki appear beyond the target's strong:echo is: received: from :a ship: bridge, or tare school point on:the same: bearing ‘as:the large. breakwater. target.
.. — 8 NAVIGATION USING THE RADAR 8-1 Determining your position The MR-40 is an accurate and reliable navigation aid. ‘for determining your position: The following diagrams show your position using radar and:a nautical chart. When fang ang’ 1 bearing dan deplorably on the chart When 3 ranges can bie piloted-on he gnarl. ‘Wheeling bearings can be plotted o the chart. 8-2 Avoiding collisions At the:moment that a target appears on the screen; its range and relative bearing should be noted.
8-3 Line-of-sight range NAVIGATION USING THE RADAR 8 A line-ob sight range limits distant: target searching: Radar waves behave like light waves, yet they are refracted slightly more than the optical horizon. The range: limit can: be calculated with::the: following formula: Distance {rim) = 223 WhE # Vhf franchiser height: im) h2 Target height (m} ‘The following graph ‘shows the: relationship manga the antenna; target heights, and distance. EXAMPLE] Scanner height is:5:m; Target height is 5:m.
9 9-1 Installing the display unit INSTALLATION AND CONNECTION 9-2 Installing the scanner unit * Installation location Select a place for installation which meets these important conditions: 1} The uni must be placed near the:wheel in:the: gain so that an operator may easily view the ra: dar screenwriters facing in the direction o the bow: 2) To:minimize Interference, CHEER the unit AT LEAST ¥ m (3.3 11) away therefrom compass and any navigation receiver.
9-4 Mounting the display unit INSTALLATION AND CONNECTION 9 The universal bracket supplied with: the display unit allows: “dashboard.’’ Overhead’ or “screen-p’ mounting: 1) Hold the universal bracket-up to the selected cancellation: mark pilot holes for: installation holes: 5 holes: with a diameter of 8 mm {1/8 in)as shown initiate diagram.
O INSTALLATION AND CONNECTION 9-5 Mounting the scanner unit After selecting the mounting location for the scanner: it follow: this mounting procedure: 1) Choose: & location for the: radiomen: base: which misers the following important conditions: *The radiomen base should be adjusted So that a target ‘choreographed from the bow direction will be shows on: 1he 07 (Heading marker): position off the screen; *The mounting surface must be parallel with wangler.
9-6 Wiring a system cable INSTALLATION AND CONNECTION 9 CAUTION: po NOT cut the supplied system cabal: i cut, readjustment of the infernal display units necessary. 1) Strip sate wire end of the stern able as shown initiate: diagram: 2) Loosen the nut on the tanner unit and pass the system 'end without & connector) through the nut 3) After the cable has been passed through:the nut. place the sealing union over the cable as shown in:the diagram: Shield wire: 4y Connect each wire end to the proper terminal.
O INSTALLATION AND CONNECTION 9-7 Power source requirement * DC power source The MR:-0 is designed for connection 1o any power source voltage of 1140 battery can: be used without any internal modifications; * DC power cable connection Connect the supplied D power cable as shown in the: diagram.
Continuing satisfactory. operation of the radar de: pends nohow you care for your equipment. The simple maintenance sips that. follow can help. you save-time; save money, and avoid premature equipment failures: 10-1 Periodic maintenance maintenance 10 1) Keep the equipment as clean a8 possible; = Rise g soft cloth 1o remove dirt dist and water. 2y Check all hardware for tightness: 3 Check cables and terminal connections.
10 MAINTENANCE 10-4 Fuse replacement fuse blows or:the radar stops:functioning, find the source of the problem if possible; and replace the damaged fuse with: 4 new rated fuse: fuses are installed in the display unit: *Hear panel: DC line fuse holder S 1104 *Internal DG line fuse holder 1. B A Internal DO Hing: fuse 10-5 Option *« OPCODE SYSTEM CABLE Allows youth install the display unit and scanner unit unto B0 m (984 granary.
M General s Minimum range sMaximumirange *Measurement range s Preheat time.
o |COM MR_40 OPERATING GUIDE M Basic operation 35 Turn ON the [SCANNER: MT} switch: on the rear panel. {2 Push [POWER] to'turn ON the Uit and 20N e Wi 2 ties. Pushiness] to select the PPl stress: o \ L ICON 3 @ Push ' [RANGE] ‘and rotate the multi k ] j function ‘selector 10 select the display range. E 128 Set [GAIN) f0 the 2 o'clock position. Set [SEA] o the fully counterclockwise position. INITIAL SCREEN STAND-BY SCREEN Adjust [TUNE] to settee "LEVEL indicator 10:its maximum level.