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DUKANE SEACOM, INC. SARASOTA, FLORIDA 34243 PHONE: 941-739-3200 FAX: 941-739-3201

DOCUMENT NO. 03-TM-0063 DUKANE SEACOM, INC.

INTERNET: www.radiantpowercorp.com

AUGUST 01, 2014

REV A

TECHNICAL MANUAL UNDERWATER ACOUSTIC BEACON

MODEL DK120/90

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This manual should be read in its entirety prior to

any installation, operation, testing or maintenance

of the DK120/90 Underwater Acoustic Beacons.

The information contained in this manual is intended to

assist with the installation, maintenance, and use of the

model DK120/90 Underwater Acoustic Beacon when

attached to an aviation data recorder. For other applica-

tions of this product please contact the factory for infor-

mation regarding the warranty, installation, maintenance,

and use.

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TABLE OF CONTENTS

SECTION I ........................................................................................................................................... 5

GENERAL INFORMATION .................................................................................................................. 5

1.1. INTRODUCTION. ................................................................................................................................... 5

1.2. GENERAL DESCRIPTION. ................................................................................................................................ 5

SECTION II .................................................................................................................................... 7

INSTALLATION ............................................................................................................................................. 7

2.1. GENERAL. ............................................................................................................................................... 7

2.2. INSTALLATION CRITERIA OF THE BEACON. .............................................................................................. 7

2.3. SURVIVABILITY. ................................................................................................................................................. 7

2.4. ENVIRONMENTAL. .............................................................................................................................. 7

2.5. MAINTENANCE..................................................................................................................................... 7

2.6. INSTALLATION PROCEDURES FOR THE DK120/90 AND THE N30A26 SERIES

MOUNTING KIT. ..................................................................................................................................... 8 2.7. INSTALLATION PROCEDURES FOR THE DK120/90 AND THE N30A21A MOUNT-

ING KIT. .................................................................................................................................................................... 9

SECTION III ................................................................................................................................. 11

OPERATION ................................................................................................................................ 11

3.1. THEORY OF OPERATION. ..................................................................................................................................................... 11

SECTION IV ................................................................................................................................. 12

TESTING ............................................................................................................................ 12

4.1. GENERAL. ............................................................................................................................................. 12

4.2. BATTERY TESTING.. ........................................................................................................................................ 12

4.3. OPERATIONAL TESTING. ............................................................................................................................................. 12

SECTION V .................................................................................................................................. 13

MAINTENANCE DK120/90 ....................................................................................................................... 13

5.1. GENERAL. ............................................................................................................................................. 13

5.2. BEACON CLEANING. ......................................................................................................................... 13

5.3. BEACON TESTING. ............................................................................................................................. 13

5.4. PRECAUTIONS. ........................................................................................................................................................................ 13

5.5. BEACON DISASSEMBLY. ................................................................................................................. 13 5.6. INFORMATION, REPLACEMENT, AND TESTING FOR 810-2042 BATTERY. .................................... 13 5.7. BEACON OFF-CURRENT TEST. ......................................................................................................................... 17

5.8. BATTERY DISPOSAL. ...................................................................................................................................... 17

5.9. BEACON STORAGE. .......................................................................................................................... 17

SECTION VI ................................................................................................................................ 18

WARRANTY DK120/90 .............................................................................................................................. 18

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SECTION VII ............................................................................................................................... 19

SERVICE PROGRAM DK120/90 .............................................................................................................. 19

7.1. BEACON RETURN - DEFECTIVE. ............................................................................................................... 19

7.2. BEACON RETURN - NO DEFECT. ............................................................................................................... 19

7.3. BEACON RETURN - OUT OF WARRANTY. .................................................................................................. 19

7.4. BATTERY CHANGE/OVERHAUL FOR THE DK120/90 ....................................................................... 19

SECTION VIII .............................................................................................................................. 20

PROCEDURE FOR RETURNING DK120/90 ........................................................................................ 20

BEACON TO FACTORY ................................................................................................................. 20

8.1. BEACON SERVICE. ............................................................................................................................. 20

8.2. BATTERY CHANGE/OVERHAUL. ............................................................................................................................ 20

TABLE OF FIGURES

Figure 1. DK120/90 Underwater Acoustic Beacon Installed in Mounting Kits ...................................... 5

Figure 2. Water Switch Location on Beacon ............................................................................................ 5

Figure 3. N30A26 Series Mounting Kit Installation Details ................................................................ 8

Figure 4. Installation of N30A26 Series Mounting Kit and Beacon ........................................................ 9

Figure 5. Mounting Hole Template for N30A21A Mounting Kit ............................................................. 9

Figure 6. N30A21A Mounting Kit and Beacon Overall Dimensions ................................................ 10

Figure 7. Method of Installing the N30A21A Mounting Kit ............................................................. 10

Figure 8. Securing Beacon in N30A21A Mounting Kit .................................................................... 10

Figure 9. Nominal Pulse Train ......................................................................................................... 11

Figure 10. Typical Beacon Label ......................................