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Lightweight Command Unit

ORTs and DORTs are controlled using a frequency band specific Lightweight Command Unit (LCU) which consists of an over-the-side dunking transducer connected either to a splash-proof handheld terminal or, via supplied software, to any PC. The Type 7663 unit is a Medium Frequency LCU for commanding ORTs whilst the Type 7667 LCU is a Low Frequency unit suitable for use with DORTs

 

 

    

For security of operation, a special coding system provides protection against accidental release by noise or acoustic transmissions from other equipment. Each ORT or DORT has its own unique ‘address’ enabling a number of units to be deployed in the same area without risk of interference.

Technical Specifications :-

Features Type 7663 Type 7667
Operating Frequency MF (18–36kHz) LF (7.5–15kHz)
Transducer Beamshape Hemispherical Hemispherical
Transmit Source Level (dB re 1µPa @1m) 186dB 186dB
Receive Threshold (dB re 1µPa) <115dB <115
Battery Life (Ni-Cad, Rechargeable) 4-8 Hours (Continuous Interrogation) 4-8 Hours (Continuous Interrogation)
Battery Shelf Life (Disconnected) 2 Months 2 Months
Transducer Cable Length 40 Metres 40 Metres
Transducer Weight in Air (Excluding Cable ) 8kg 8kg
Shipping Weight 40kg 40kg

Features:-

  • Commands and controls ORT and DORT transponders
  • Choice of MF or LF operating band depending on acoustic release type
  • Controlled using splash-proof Psion handheld terminal or PC
  • Supplied with dunking transducer and 40 metre cable drum
  • Allows users to range to Compatt transponders and send basic commands