SPECIFICATIONS OF AD-100 A-D CONVERTER

General

The AD-100 A-D converter converts the gyro compass reading into digital coded bearing data and display it on a 4 digit LED display.

The digital bearing output may be sent to navigation equipment such as radar, GPS navigator and autopilot.

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EQUIPMENT LIST

COMPLETE SET

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CHAPTER 1 OPERATION

1. FRONT PANEL

FRONT PANEL

2.OPERATION

(1)When you turn on the power of a gyrocompass, the AD-100 is powered on simultaneously.

(2)Adjust the brightness of the Bearing Display and the backlighting of the keys with the Dimmer Control.

(3)The Bearing Display is blinking, which means the data is not yet sending out from AD-100.

(4)Once you press HOLD key, the data is sent out changing the Bearing Display from blink to light. In this state, the Hold lamp does not light yet. Prior to press of the HOLD key, adjust the Display with the UP or DOWN keys to get the same reading to the gyrocompass.

Each pressing of the key changes the display by 0.1 degrees. For faster change, press and hold down the key to change the display in 1.0 degree steps.

(5)If Power fail detection is preset to OFF (See page 3-10), switching on the gyrocompass makes the data of AD-100 output immediately. Therefore, it is necessary to ensure that the reading between the gyrocompass and the Display is same after the gyrocompass reading stabilizes.

(6)To freeze the display, press the HOLD key. In this case the HOLD lamp lights. To restart the display press the HOLD key. Since the computing circuit is disengaged from the gyrocompass during HOLD, readjust the Display to get the same reading to the gyrocompass.

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CHAPTER 2 MAINTENANCE

1. FUSE REPLACEMENT

To protect the unit from serious damage, four 2A fuses are provided on a P.C. board. The fuses protect against overvoltage or internal fault of the equipment. If a fuse blows, find the cause of the problem before replacing it.

CAUTION

Do not use a fuse rated more than 2A, since it may cause more serious damage to the equipment.

2. MINOR TROUBLESHOOTING

Operating problems are most likely caused by loose connectors or wrong setting of DIP switches. The table below provides simple troubleshooting which can be done by the operator.

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CHAPTER 3 INSTALLATION

1. INSTALLATION

1)General notes on installation

This equipment provides its intended function only when it is installed properly. The installation site is important for proper operation and continued performance. Select it keeping the following points in mind.

(1)Select a place where the unit can be observed and operated directly.

(2)Keep away from water spray.

(3)Select a clean and cool place.

(4)Select a place where shock, vibration and noise are minimal.

(5)Observe the following compass safe distance to prevent interference to a magnetic compass:

Standard compass: 1.10 m

Steering compass: 0.80 m

NOTE

FURUNO will not assume responsibility for damage caused by water spray.

2)Mounting the unit

The equipment can be mounted on the underside of table or a table top. Ensure the mounting location is strong enough to support the unit under the condition of shock and vibration normally encountered onboard the vessel. If necessary, reinforce the mounting location with a lining block or doubling plate.

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1) DIP switch and jumper wire setting

Revised at Apr. 9. 2001

Note1) *: Set JP4 and JP5 according to the voltage of the external power supply. Note2) If CMZ-50 has 35VDC, set JP1 to #4, #5, #6.

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2)Default setting

This unit is set at the factory for connection with the gyrocompass specifications tabulated below.

(3)Rotor voltage

This is for AC synchro type gyrocompass only. For the rotor voltage of the DC synchro type will be at step 6.

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(7) Output data transmitting interval and output sentence, version no. and baud rate.

(8)Data transmitting interval of AD-10S format

Select data transmitting interval for each port by changing the proper jumper wire on JP6 or JP7.

NOTE: Use the interval 25ms. for radar only.

END

4)Function of DIP switches and jumper wires

The function of each DIP switch and jumper wire is as listed below. Set them according to the specifications of the gyrocompass connected. After setting, reset CPU or turn the power off and then on again to write setting into the CPU ( : default setting).

(1) DIP Switch SW1 (1/2)

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* O M E 4 3 4 0 0 U 0 0 *