RJE ATT-400/AODC User Manual
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RJE ATT-400/AODC User Manual

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RJE INTERNATIONAL, INC.
A T T - 4 0 0/AODC
T R A N S P O N DER
U S E R M A N U A L
R E V. A
600-17025

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Summary of Contents for RJE ATT-400/AODC

  • Page 1 RJE INTERNATIONAL, INC. A T T - 4 0 0/AODC T R A N S P O N DER U S E R M A N U A L R E V. A 600-17025...
  • Page 2 International ATT-400/AODC Series Acoustic Target Transponder. The information herein is arranged into chapters and sections as follows: Chapter 1 – An overview of the ATT-400/AODC. General notes including brief sections describing the applications and physical characteristics of the beacon itself.
  • Page 3 Repairs or replacements, parts, labor, and return shipments under this warranty will be at no cost to the customer. This warranty is void if, in RJE’s opinion, the product has been damaged by accident or mishandled, altered, or repaired by the customer, where such treatment has affected its performance or reliability.
  • Page 4 Title shall pass to buyer on delivery to carrier at Irvine, CA. Risk of damage or loss following such delivery shall be to the buyer and RJE International shall in no way be responsible for safe arrival of the shipment.

  • Page 5: Table Of Contents

    4.3 Replacing the ATT-400/AODC Batteries ............... 7 ILLUSTRATIONS FIGURE 1-1 Model DTI-300/AODC Diver Transponder Interrogator ........1 FIGURE 1-2 Model ATT-400/AODC Acoustic Target Transponder ........2 FIGURE 3-1 ATT-400/AODC Disassembly................4 FIGURE 4-1 ATT-400/AODC Disassembly................7 FIGURE 4-2 ATT-400/AODC Battery Connections .............. 7 FIGURE 4-3 ATT-400/AODC Battery Installation ..............

  • Page 6: Overall Description

    Section Overall Description The RJE International ATT-400/AODC Acoustic Transponder is an underwater acoustic signaling device that works with the DTI-300/AODC interrogator and Sonardyne’s tracking systems for marking and relocating diving bells. The ATT-400/AODC Transponder meets the DNV specifications for offshore use.

  • Page 7: Figure 1-2 Model Att-400/Aodc Acoustic Target Transponder

    Constructed of non-corrosive material, the ATT-400/AODC transponders can be deployed to depths from 100 meters to 6000 meters, depending on the Model. Figure 1-2 ATT-400/AODC Transponder RJE International, Inc. Tel: (949) 727-9399 | Fax: (949) 727-0070 | sales@rjeint.com | www.rjeint.com...

  • Page 8: Att-400/Aodc Specifications 2.1 Att-400/Aodc Specifications

    Section ATT-400/AODC Acoustic Target Transponder Specifications Table 2-1 ATT-400/AODC Series Acoustic Transponder Specifications Receive Frequency 38.5kHz (CH-A) and 39.5kHz (Ch-B) factory set Acoustic Source Level 180 dB re 1µPa @ 1 meter Transmit Repetition Rate Normal: 1.0 second Transmit Pulse Length 5.0 ms...

  • Page 9: Operation & Installation Notes

    It operates in both fresh and saltwater environments. Once wet the ATT-400/AODC will remain activated for up to thirty-six months (based on the battery type) while it waits to receive a coded interrogation signal from a transponder interrogator.

  • Page 10: Pre-Deployment Check

    10 seconds pass to confirm activation.  On the DTI-300/AODC, press UP or DOWN buttons to select the proper channel (Ch-A) or (Ch-B) for the model of the ATT-400/AODC being used.  Aim the DTI-300/AODC transducer at the transponder. Observe the interrogator T (transmit) flash and verify that the R (receive) flashes alternately.

  • Page 11: Att-400/Aodc Maintenance

    Maintenance Upon completion of each dive mission, take these steps to assure continued reliable performance from the ATT-400/AODC. • Wash the exterior of the equipment with fresh water and mild detergent. Make sure to clean filmy build-up on the transducer face.

  • Page 12: Replacing The Att-400/Aodc Batteries

    Replacing the ATT-400/AODC batteries The batteries in the ATT-400/AODC transponder should be replaced after eighteen to thirty-six months, based on model, or prior to each use. To change the ATT- 400/AODC batteries follow this procedure: • Gently loosen and remove the end cap assembly from the housing by turning the housing counter-clockwise.

  • Page 13: Figure 4-3 Att-400/Aodc Battery Installation

    Rotate the transponder assembly and repeat the same steps for the opposite  side. Figure 4-3 ATT-400/AODC Battery Installation • Before installing the end cap assembly, make sure the O-ring and O-ring surfaces are clean and free of debris. Lubricate the O-ring with a light coat of silicon grease (O-lube) supplied in the spares kit.

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