C

9 - 5 2 , A s h i h a r a - c h o , N i s h i n o m i y a , J a p a n

A l l r i g h t s r e s e r v e d . Printed in Japan

You r Loca l Agent/Dealer

WARNING

Do not open the equipment unless totally familiar with electrical circuits and service manual.

ELECTRICAL Only qualified personnel SHOCK should work inside the

HAZARD equipment.

Wear a safety belt and hard hat when working on the antenna unit.

Serious injury or death can result if someone falls from the radar antenna mast.

Construct a suitable service platform from which to install the antenna unit.

Serious injury or death can result if some- one falls from the radar antenna mast.

Turn off the power at the mains switch- board before beginning the installation.

Fire, electrical shock or serious injury can result if the power is left on or is applied while the equipment is being installed.

Hang the redome cover on the snap assy. after removal.

Serious injury can result if the cover falls on someone.

CAUTION

Ground the equipment to prevent electrical shock and mutual interference.

Lift the radome cover slowly.

The antenna radiator may be caught by the screw holes in the radome cover.

If you feel the radiator is caught by the screw holes, lower the cover, turn it a few degree and then lift it again.

Screw holes (4 places)

Observe the following compass safe distances to prevent interference to a magnetic compass:

External Buzzer

OP03-168

Remote Display

FMD-1712

ANTENNA UNIT

ANTENNA UNITRSB-0060

RSB-0087

OR

DISPLAY UNIT

RDP-134

Navigator (GPS, etc.)/

Video Sounder

Video Sounder

Navigator (GPS, etc.)

Local Supply

Ship's Mains

100/110/ 220/230 VAC 1?? , 50/60 Hz

12-24 VDC

1.1 Antenna Unit

Installation

Mounting considerations

When selecting a mounting location for the antenna unit keep in mind the following points.

???Install the antenna unit on the hardtop, radar arch or on a mast on an appropriate platform. (For sailboats, a mounting bracket is optionally available.) It should be placed where there is a good all-round view with, as far as possible, no part of the ship???s superstructure or rigging intercepting the scanning beam. Any obstruction will cause shadow and blind sectors. A mast, for instance, with a diameter considerably less than the width of the antenna unit, will cause only a small blind sector. However, a horizontal spreader or crosstrees in the same horizontal plane would be a much more serious obstruction; place the antenna unit well above or below it.

Antenna unit

Antenna unit

Figure 2 Typical antenna unit placement on powerboat

???In order to minimize the chance of picking up electrical interference, avoid where possible routing the antenna cable near other electrical equipment onboard. Also avoid running the cable in parallel with power cables.

???The compass safe distance of 1.25 meters (standard compass) and 0.85 meters (steering compass) should be observed to prevent deviation of the magnetic compass.

Mounting on a platform

1.Remove mounting hardware at the bottom of the antenna unit; four each of hex bolts (M10X20), spring washers and flat washers. Save mounting hardware to use it to fix the antenna unit to the mounting platform later on.

4.Unfasten four screws to remove the cover. Discard the packing material in the radome.

Snap holder

Figure 3 Antenna unit, showing location of mounting hardware

2.Construct a platform (wood, steel, or aluminum) of 5???10 mm in thickness referring to the outline drawing at back of this manual. Fasten the platform to the mounting location. Next, position the base so the cable entrance faces the stern direction.

Note: When drilling holes in the platform, be sure they are parallel with the fore and aft line.

3.Using the hex bolts, flat washers and spring washers removed at step 1, fasten

the base to the platform. The torque should be between 19.6-24.5 N??? m.

Note: Longer hex bolts (M10X25) are supplied with the installation materials. Use them instead of the hex bolts removed earlier if the mounting platform is very thick.

Figure 5 Antenna unit, inside view

The mounting base is fitted with a snap holder. which may be used to hang the cover after removal. Use the hole next to screw hole inside the cover to hang it.

a)Unfasten the snap assy. with the string attached at the holder in the mounting base.

b)Unwind the string.

c)Attach the snap to a screw hole on the inside of the cover.

Note: Do not hang any other objects with the snap.

5.Unfasten the cable of the rotation detector from the cable clamps.

6.Unfasten 11 screws to dismount the shield

plate. Discard screw marked with in the Figure 6.

Cable clamp

Shield plate

Rotation detector

Caution

Figure 6 Antenna unit, inside view

Caution: Be careful not to pinch the rotation detector cable when remounting the shield plate.

7.Pass the antenna cable with connector through the gasket and cable clamp, and then tighten cable gland.

Be sure the shrink tubing on the antenna cable is not covered by the gasket.

Rubber gasket

8.Referring to Figure 8, fasten the shield cable with screw (M4x10) on the chassis to ground the unit.

Figure 8 How to connect the antenna cable to the antenna unit

9.Attach EMI Core (supplied) to antenna cable. Set the fixing band to the EMI core.

Fixing band

This bend should be facing toward you.

Figure 9 Fixing band

10.Referring to Figure 8, connect the 9-pin connector of the antenna cable to J801.

11.Refasten the shield plate with 10 screws. Be sure not to pinch cable from the rotation detector with the shield plate. See ???Caution??? in Figure 6 for details.

12.Fasten the Fixing band with Screw (supplied).

Screw(M4X15)

Gasket

Cable Gland

Sectional view

Fixing

Align bend with corner of chassis.

Rubber gasket

Mounting base

Figure 7 Antenna unit, inside view

Band EMI Core

Figure 10 How to fix the EMI Core

13.Follow the instructions on the label inside the mounting base to secure the snap assy.

14.Confirm that the rubber gasket is properly positioned and that the triangle mark on the radome cover is aligned with the triangle mark on the mounting base, then tighten the fixing screws for the cover. Refer to Figure 7 for positioning of rubber gasket.

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Mounting using the optional mounting bracket

A mounting bracket for fastening the antenna unit to a mast on a sailboat is optionally available (Type OP03-93, Code No.008-445-080).

1.Remove mounting hardware at the bottom of the antenna base. You may discard the hardware. Assemble the mounting bracket and fasten it to a mast. Fasten the antenna unit to the bracket.

1.2 Display Unit

Installation

Mounting considerations

When selecting a mounting location for the display unit keep in mind the following points.

???Locate the display unit in a position where you can view and operate it conveniently.

???The orientation of the display unit should be so the radar screen is viewed while the operator is facing in the direction of the bow. This makes determination of your position much easier.

???The display unit is designed and constructed to be splashproof, thus it can be installed outdoors. If it is to be installed outdoors, we recommend installing it an enclosed cabinet, for maximum protection against the marine environment.

???Even though the picture is quite legible even in bright sunlight, keep the display unit out of direct sunlight or at least shaded because of heat that can build up inside the cabinet.

???The temperature and humidity of the mounting location should be stable and moderate. No LCD can provide adequate contrast if the ambient temperature is too low or too high.

???Make sure you allow enough clearance both to get to the connectors behind the unit and to allow you to get your hands in on both sides to loosen or tighten the mounting knobs. Make sure you leave at least a foot or so of "service loop" in cables behind the unit for servicing or easy removal of the connectors.

???The compass safe distance of 0.90 meters (standard compass) and 0.60 meters (steering compass) should be observed to prevent deviation of the magnetic compass.

Removing cover

While pressing the center of the cover with your thumbs as illustrated, pull the cover towards you to remove it.

Mounting

The display unit can be mounted on a tabletop, the overhead, or flush mounted in a panel.

1.Fix the hanger to the mounting location with four tapping screws (supplied).

2.Attach the anti-vibration pads to the hanger.

3.Fit the knob bolts and anti-vibration rubbers to the display unit.

4.Cover the unused bolt holes with the dummy films supplied.

5.Install the display unit in the hanger. Tighten the knob bolts securely.

Confirm the anti-vibration pad are attached at both side of the hanger.

4-?? 6

200

DUMMY FILM

Cover unused knob bolt holes with dummy film (supplied).

192

192

CUTOUT SIZE

FOR PANEL

MOUNTING

2.1 Connections

Connect the antenna cable, the power cable and the ground wire as shown in Figure 13.

ANTENNA UNIT*1

Signal cable

(select one)

1621 or 1621M2 is available.

*2 : Optional for 24 VDC ship's mains only.

Figure 13 Connections

Connection of external equipment

Navigator/echosounder

This radar can receive the following NMEA 0183 format data sentences from a navigator or echosounder:

After soldering, wrap with self-vulcanizing tape.

Figure 15 Connection of video sounder and navigator cables

Note 1: Tape unused cables to prevent short.

MODEL1712

NMEA

1RD1-H

2RD1-C

3RD2-H

4RD2-C

6 GND

External buzzer (option)

The optional external buzzer provides a louder alert when the guard alarm is violated.

External buzzer

Type: OP03-168

Code No.: 008-462-790

1.Unfasten screws and connector nuts to remove the rear cover from the display unit.

2.Place the rear cover on a workbench, out side up. Remove the plastic hole cover from the location shown in Figure 19 with a Phillips screwdriver and a hammer. Remove burrs from the hole with a fine file or sandpaper.

3.Insert the MJ connector (supplied as option) in the hole made at step 2 as shown in Figure 17. And then fasten the connector nut with 0.76-0.78 N??? m torque.

4.Plug in the XH connector at the end of above connector into J6 on the DU Board.

5.Fasten screws and connector nuts to reassemble the display unit. Torque should be between 0.76-0.78 N??? m.

6.Fasten the buzzer near the display unit (within 1 m) with two tapping screws (3X15 or 3X20; local supply).

7.Attach the connector from the external buzzer to the MJ connector.

Connector nut

Display unit, rear cover

Connector gasket

MJ connector

XH connector

(to J6 on the DU Board)

Figure 17 Fixing MJ-XH connector assembly

60 mm

50 mm

2-?? 3.5

Figure 18 External buzzer

External Buzzer

Remove hole cover with Phillips screwdriver and hammer. Remove burrs from hole with fine file or sandpaper. Attach connector (supplied as option).

J6 located at right side of shield case under the rear panel.

Figure 19 Display unit, rear view

3.1 Installation Check

After installing the system it is a good idea to check it for proper installation, following the checklist provided below.

???Cable gland is facing toward the stern.

???Four fixing bolts securing the antenna unit are securely tightened.

???The signal cable is waterproofed at the base of the antenna unit.

???The antenna cable is securely retained against the mast or mounting and is free of interference from running rigging.

???The cable gland on the deck or bulkhead is waterproofed, if provided.

???Connectors of external equipment are securely plugged into the radar display unit.

???The power connections to the battery are of correct polarity.

3.2 Exchanging Display

Unit of Previous Model

When exchanging the display unit of the MODEL 1712 with that of the MODEL 1622 or 1621/1621 MARK-2, it is necessary to select the appropriate display setting. This should be done with the radar in stand-by.

1.Press % and & together for about 10 seconds to show the display shown in Figure 20.

Figure 20 Maintenance menu

2.Select MODEL by %.

3. Select 1622 or 1621/M2 by .

4.Press the [MENU] key to close the menu.

3.3 Adjustments

Do the following in order to adjust the radar.

1) Adjustment of picture

1.Press the [POWER] key on the display unit. The display should light. In approximately one minute, ST-BY appears at the screen center.

2.When ST-BY appears press the [TX] key. The radar will start transmitting, and you will probably see some targets, even though the radar is not yet properly adjusted.

3.Adjust the GAIN to display a small amount of noise on the screen.

4.Press the [???] key several times to select the minimum range. Adjust the STC to display nearby radar targets clearly on the screen. Too much STC action will eliminate small targets, and too little STC action will cause the screen to be so full of targets and noise that it is hard to determine which target is which as compared to visual sightings.

2) Heading alignment

You have mounted the antenna unit facing straight ahead in the direction of the bow. Therefore, a small but conspicuous target dead ahead visually should appear on the heading mark (zero degrees).

In practice, you will probably observe some small error on the display because of the difficulty in achieving accurate initial positioning of the antenna unit. The following adjustment will compensate for this error, up to ??30 degrees.

1.Identify a suitable target (for example, ship or buoy) at a range between 0.125 to 0.25 miles, preferably near the heading mark.

To minimize error, keep echoes in the outer half of the picture by changing the range.

2. Press and hold down and together (about 10 seconds) to display the installation menu.

HEADING MARK BISECTS TARGET

LOCATED DEAD AHEAD.

Tuning bar (for technicians)

Instructions for item selected appear here. (example: heading adjustment)

Figure 21 Installation menu

3.Select ADJ HDG. Your display should now look something like the one shown in

Figure 22.

0.25 NM

at step 1 with the dot-dash-line.

5.Press MENU.

0.25NM

.125

Target

Heading marker

9.4

0.015 NM

Figure 23 How to adjust heading

6.As a final test, move the boat towards a small buoy and confirm that the buoy shows up dead ahead on the radar when it

is visually dead ahead.

3) Sweep timing

This adjustment ensures proper radar performance, especially on short ranges. The radar measures the time required for a transmitted echo to travel to the target and return to the source. The received echo appears on the display based on this time. Thus, at the instant the transmitter is fired, the sweep should start from the center of the display (sometimes called sweep origin.)

A trigger pulse generated in the display unit goes to the antenna unit through the antenna cable to trigger the transmitter (magnetron). The time taken by the signal to travel up to the antenna unit varies, depending largely on the length of signal cable. During this period the display unit should wait before starting the sweep. When the display unit is not adjusted correctly, the echoes from a straight local object (for example, a harbor wall or straight pier) will not appear with straight edges ??? namely, they will be seen as pushed out or pulled in near the picture center. The range of objects will also be incorrectly shown.

Figure 24 Examples of improper and correct sweep timings

1.Transmit the radar on 0.125 or 0.5 nm range and adjust the sensitivity and STC.

2.Visually select a straight echo (harbor wall, straight pier).

3. Press and for 10 seconds to show the installation menu.

4.Select ADJ TMG on the menu.

Figure 25 Installation menu, ADJ TMG selected

4.While looking at the target selected at step

4) Unit of range measurement for VRM and cursor

The unit of range measurement for the VRM and the cursor may be selected to nautical mile or kilometers as follows:

1.Select NM/KM on the menu.

NAUTICAL MILE OR KILOMETER

AS THE UNIT OF RANGE.

Figure 26 Installation menu, NM/KM selected

2.Select unit of range desired.

3.Press the [MENU] key to close the

installation menu.

3.4 Adjustments for Technicians

1) Magnetron heater voltage

Magnetron heater voltage is formed at the MD Board of the antenna unit and preadjusted at the factory for use with any length of signal cable. Therefore no adjustment is required. However, verify heater voltage as follows:

CAUTION

Lift the radome cover slowly.

The antenna radiator may be caught by the screw holes in the radome cover.

If you feel the radiator is caught by the screw holes, lower the cover, turn it a few degree and then lift it again.

Screw holes (4 places)

Note: Turn the power on when measuring magnetron heater voltage.

1.Dismount the shield plate.

MD board under the shield plate

Figure 27 MD board

2.Turn on the power. Do not transmit the radar.

3.Connect a multimeter, set to 10 V DC range, between #6(+) and #4(-) of test point TP804 on the MD Board in the antenna unit.

4.Confirm that the multimeter shows 8.0 V ??0.1 V. If it does not, adjust potentiometer VR801 on the MD Board.

VR851

VR801

TP804

Figure 28 Antenna unit, inside view

2) Radar function

This radar can function as the main radar or a demonstration model. displaying internally generated radar echoes.

1.Set the radar in stand-by.

2.Press and hold down %and & together (about 10 seconds) to display the maintenance menu.

Figure 29 Maintenance menu

3.Select MAIN or DEMO from the DISPLAY field. (MAIN, Main radar display, DEMO, demonstration display.)

4.Press the [MENU] to close the menu.

3.5 I/O Data Confirmation

You can confirm NMEA input from a navigator or echosounder. Follow the procedure shown in 2) Radar function to display the maintenance menu. NMEA sentences being input are shown in reverse video.

3.6 Restoring Default

Settings

All default menu settings can be restored by turning on the power while pressing and holding down [MENU] and ???.

Note: Disconnect the antenna cable to use as demonstration model.

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