The Kongsberg 311509 Responder Driver Unit is a specialized electronic module designed for high-accuracy subsea positioning and navigation systems. As a core component within the HiPAP (High Precision Acoustic Positioning) and Simrad underwater technology suites, this unit provides the necessary drive signals and timing control for acoustic responders. It ensures seamless communication between the surface vessel’s control system and submerged ROVs, AUVs, or towed bodies, maintaining signal integrity in complex hydroacoustic environments.

 

Technical Datasheet

• Product Name: Kongsberg 311509 Responder Driver Unit
• Model Keyword: Kongsberg 311509
• Part Number: 311509
• Output Drive Voltage: Optimized for HiPAP series responders
• Trigger Pulse Width: Configurable via system software
• Dimensions: 220mm x 120mm x 55mm
• Weight: 1.45 kg
• Country of Origin: Norway
• Interface Type: Multi-pin circular connector / Internal PCB header
• Operating Temperature: -10°C to +55°C (Internal Cabinet)

 

Application Areas

The 311509 module is critical for operations requiring millimetric subsea tracking. Primary applications include:

• ROV/AUV Tracking: Providing the electrical trigger for responders mounted on remotely operated vehicles to ensure real-time positioning.
• Subsea Construction: Assisting in the precise placement of templates and manifolds on the seabed.
• Hydrographic Surveying: Synchronizing acoustic signals for deep-water mapping and data collection.
• Dynamic Positioning (DP): Feeding acoustic reference data into the vessel’s DP system for station-keeping.

 

Operating Instructions

1. System Integration: Insert the 311509 unit into its designated slot within the Kongsberg APOS (Acoustic Positioning Operating Station) rack or the interface cabinet. Ensure the card is fully seated and the locking mechanisms are engaged.
2. Cable Connection: Connect the responder umbilical cable to the driver unit’s output port. It is essential to use double-shielded underwater cables to minimize signal attenuation and interference.
3. Software Configuration: Access the APOS interface to define the responder type. Set the interrogation frequency and pulse power levels based on the current water depth and ambient noise conditions.
4. Synchronization Check: Verify the trigger pulse on a diagnostic oscilloscope if available, or use the system’s built-in self-test (BIST) to confirm that the driver unit is communicating correctly with the transceiver.
5. Maintenance: Periodically inspect the connection pins for signs of corrosion or moisture ingress, especially when used in marine environments. Clean contacts with an approved electronic contact cleaner only.

Q&A: Frequently Asked Questions

What is the difference between a Transponder and a Responder in this context? A transponder is triggered by an acoustic signal through the water, whereas a responder is triggered via an electrical pulse through a cable (umbilical). The 311509 is specifically designed to provide that electrical trigger pulse for responders.

Can this unit drive multiple responders simultaneously? Typically, one 311509 unit is dedicated to a specific responder channel to maintain timing precision. For multiple ROVs, additional driver units or a multi-channel interface board are usually required.

How do I troubleshoot a “Responder Not Triggering” alarm? Check the continuity of the umbilical cable first. If the cable is intact, verify that the 311509 unit is receiving the trigger command from the master clock. A red status LED on the board usually indicates a hardware fault or a short circuit in the output line.

Is this unit compatible with older Simrad systems? The 311509 is backwards compatible with several legacy Kongsberg and Simrad HiPAP configurations, but firmware updates may be required for the central processing unit to recognize the module correctly.

 

Similar Model Recommendations

• Kongsberg 311510 Transceiver Interface
• Kongsberg HiPAP 500/502 Processor Module
• Kongsberg 345561 Responder Trigger Unit
• Simrad HPR 400 Series Driver Board
• Kongsberg 311508 Power Supply Module