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

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.

CAUTION

Ground the equipment to prevent electrical shock and mutual interference.

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

DISPLAY

UNIT

RDP-125

NMEA 0183 Cable MJ-A6SPF0012-050 (5 m) MJ-A6SPF0012-100 (10 m)

SIGNAL CABLE ASSY. MJ-A10SPF0008-XXX (supplied with FMD-1712)

NAVIGATOR (NMEA 0183)

SOUNDER

RADAR REMOTE

DISPLAY

FMD-1712

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 mountedfixed to mast on top of wheelhouse

Figure 1 Typical antenna unit placement on powerboat and sailboat

???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 0.95 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.

Screws

one screw on other side

Flat washer

Spring washer

Hex bolt (M10 x 20)

Figure 2 Antenna unit, showing location of mounting hardware

2.Unfasten three screws to remove the cover.

3.Construct a platform (wood, steel, or aluminum) of 5???10 mm in thickness whose dimensions are as shown in Figure 4. Fasten the platform to the mounting location. Next, position the base so the cable entrance faces the stern direction and the vent tube is extending downward through the hole for the vent tube.

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

210

Fixing Hole (?? 11mm)

160 210

Figure 3 Dimensions of antenna platform

4.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.

Transceiver

module

Antenna base

Figure 4 How to fasten the base to platform

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

Rotation detector

Cable clamp

Caution

Figure 5 Antenna unit, inside view

6.Unfasten 11 screws to dismount the shield plate.

Shield Plate

Discard screw marked with.

Figure 6 Antenna unit, inside view

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

Gasket

Cable Gland

Figure 7 Antenna unit, inside view

8.Referring to Figure 8, fasten the shield cable to a screw (M4x 10) on the chassis to ground the unit.

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

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.

Mounting using the optional mounting bracket

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 5 for details.

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

Screw(M4X15)

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).

Fixing

Align bend with corner of chassis.

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.

Fixing plate

Mounting plate

Bracket (1)

Bracket (2)

Support plate (2)

Support plate (1)

Figure 11 How to assemble and mount the optional mounting bracket

2.Refer to previous steps 4-12 in "Mounting on a platform".

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.Fit the knob bolts to the display unit.

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

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

OVERHEAD MOUNT

2.1 Connections

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

POWER SUPPLY 12/24 VDC

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:

External buzzer

Access J6 on the DU Board as shown in Figure 16. Plug in the connector of the external buzzer at J6. Seal the hole with sealing compound. Fix the buzzer by two tapping screws.

External buzzer

Type: OP03-136

Code No.: 000-086-443

60 mm

50 mm

External Buzzer

Make a hole of ?? 16 here. Seal hole with sealing compound after connecting cable.

10.2-31.0VDC 1 3GND

2

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 antenna 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.

3.2Exchanging Display Unit of Previous Model

When exchanging the display unit of the MODEL 1621/1621 MARK-2 with that of the MODEL 1622, it is necessary to maintain the magnetron warmup time. 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 19.

Figure 19 Maintenance menu

2.Select MODEL by ???.

M1622: 1 minute.

M1621/M2: 1minute and 30 seconds.

3.Select M1621/M2 by 4.

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 sensitivity 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.

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

Figure 20 Installation menu

3.Select ADJ HDG. Your display should now look something like the one shown in Figure 21.

0.25 NM

HEADING MARK BISECTS TARGET

LOCATED DEAD AHEAD.

Figure 21 Display for adjustment of heading

4.Press !or" to bisect the target selected at step 1 with the heading marker.

5.Press MENU.

0.25NM

.125

Target

Heading marker

9.4??

0.015 NM

Figure 22 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 23 Examples of improper and correct sweep timings

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

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

3.Select ADJ TMG on the menu.

IDENTIFY STRAIGHT TARGET

SUCH AS BREAKWATER. MAKE

ITS ECHO STRAIGHT ON SCREEN

BY USING t/u KEYS.

Figure 24 Installation menu, ADJ TMG selected

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.

(RANGE UNIT) PRESS t/u KEYS TO SELECT

NAUTICAL MILE OR KILOMETER

AS THE UNIT OF RANGE.

Figure 25 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

4.While looking at the target selected at step 2, straighten it by pressing ! if it is pulled inward, or "if it is pushed outward.

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:

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

1.Dismount the shield plate.

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

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 &.

PROGRAM NO 03591610XX