A Digital Survey Fathometer® Providing a Chart Display and a Digital Output

The Digital Survey Fathometer^®(DSF- 600) is a portable, dual frequency recording depth sounder with a permanent chart display, digital output, and features automatic phase changing of the chart display. Operating at frequencies of 40kHz and 200kHz (frequency switch selected), the DSF-600 provides high resolution, quality bathymetric profiles in water depths to 310 fathoms. By interconnecting it with position finding equipment and a suitable digital tape recorder or data logger, depth and position data is generated in permanent digital form for precision bathymetric survey operations. The DSF-600 system is offered with several options, allowing the user to choose the combination that best meets his surveying needs.