System Four, a new generation, light-weight, field-proven land seismic system, is purpose-built to improve operational efficiency and allow acquisition with either conventional analog geophones or digital VectorSeis sensors, in any combination, even on the same survey.

System Four is distinguished from current competing acquisition systems by numerous productivity and image-enhancing features including:

• A new Windows® based interface that accelerates the system learning process.
• Fast spread wake up and testing.
• Rapid and compete spread test capabilities and detailed spread troubleshooting, even between stations and cross-line units.
• Redundant telemetry and power that allow continued acquisition while repairs are being completed.
• Routine data output and plotting operations that are completely decoupled from acquisition operations.

Designed to acquire the highest quality data, whether
p-wave or VectorSeis full-wave, System Four delivers the
ultimate flexibility to fulfill customers' requirements.

• Acquire p-wave and full-wave data with the same system
  and on the same surveys.
• Enjoy a simple conversion path from analog to digital full-wave ground equipment.
• Avoid contaminating seismic data with cable-transmitted
  wind noise using digital sensors that are uniquely decoupled from telemetry cables.
• Expand System Four to 30,000 channels by simple board
  additions to the central recording unit and by adding a truck panel.

Other related material:

IO System Four – V2 Operations Manual