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ANALOG SIDESCAN
Posted by Jerry Knisley, Last modified by
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on 09 December 2014 12:25 PM

Driver providing 2-channel sidescan information from analog input.  A separate program (Ascan.exe) is run automatically to sample the ping trigger and digitize the analog inputs.  The digitized data are passed to HYSWEEP Survey through shared memory.

 

Setup Form:

 The is no setup form in HYSWEEP Hardware.  However, clicking “Analog Sidescan Monitor” (on the taskbar) during HYSWEEP Survey will show the form for sidescan configuration on the fly. There is an image attached at the bottom to show what this looks like. 

 

Input:  Select one of the voltage range options.

Trigger:  Ping is on low to high or high to low transition of the trigger signal.

Gain:  Gain constant (voltage multiplier).

Threshold:  This is the A/D count level at which trigging occurs.

Test:  Simulate data provides a dummy amplitude time series for each channel. 

 

Connection:

Connected via a National Instruments multifunction I/O device – PCI board or PCMCIA card.  The device is plug and play – no configuration required.

 

Offsets – Sonar Heads 1 and 2:

  • Starboard:  Sonar head locations starboard of boat center.
  • Forward: Sonar head locations forward of boat center.
  • Vertical: Sonar head locations relative to waterline (positive).
  • Yaw, Pitch, Roll. Latency:  Enter 0.

 

Notes:

See Appendix A:  Analog Sidescan Interfacing.



Attachments 
 
 analog.png (17.86 KB)