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Technical brief
Octopus 360+

Sub-bottom processor

   
 
 

INPUTS AND OUTPUTS

  Analogue inputs   16 bit scalable from 125mV to 5V configured as 1 x sub-bottom analogue input + analogue heave input.
       
  Analogue outputs   Analogue output, synchronous with trigger out.
     

 

  Trigger input   Single trigger input with variable threshold (250mV/2.5V) synchronises start of analogue acquisition.
       
  Trigger outputs   Internal trigger (5v) user selectable rate, 50ms to 10 seconds. Delayed trigger synchronised to start of sub-bottom acquisition.
       
  Navigation & fix data   2 x RS232 serial inputs (9 pin D-type) for NMEA navigation (GGA, GLL, VTG, RMC etc.) or Octopus fix and annotation strings.
Additional inputs on request.
       
 

DATA RECORDING

  Recording formats   SEGY, CODA, XTF.
All data is recorded raw (without gain or processing applied).
     

 

 

DISPLAY MODES

  Sub-bottom   Single channel sub-bottom profiler display, horizontal scrolling with co-registered oscilloscope display. Pan and zoom functions for optimum data view. All gain and processing controls on-screen.
           
  Full screen   Horizontally scrolling sub-bottom profiler.
           
  Navigation   All navigation, fix, annotation and status information shown on all screens.
       
 

PROCESSING

  Gain  

Variable gain hydrophone pre-amplifier (pre digitisation).
Digital base gain.
Three stage TVG.

           
  Signal processing   High & low pass time varied filters (TVF).
Time varied stacking.
Swell compensation (automatic or external heave input).
           

All other specifications as per Octopus 760

   
 

 

 

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