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Sophisticated and adaptable, high fidelity seismic digitiser

The Güralp Affinity is a high-fidelity integrated digitiser and network communications unit that provides a convenient and expandable way of connecting analogue and digital instruments to your network. A stable and robust Linux-powered unit with on-board storage and networking facilities, the Affinity directly controls power suppliers to peripherals and reports their voltages via state-of-health communications. The Affinity is available with either 4 or 8 channels.

Key Features

  • 4 or 8, 24-bit channels: 3 or 6 primary and 2 auxiliary
  • Exceptionally low noise: >138 dB of dynamic range @ 100sps
  • 8 or 16 environmental multiplexed ADC channels
  • STA/LTA, level and external triggers
  • High sampling rates of up to 4000 samples per second
  • Four (or eight) streams with individually selectable sample rates (continuous or triggered)
  • UTC time-stamped data using a low-power GPS receiver and state of the art timing protocols e.g. Precision Timing Protocol (PTP)
  • Multi-user Linux operating system with full network support
  • Remote configuration with on-board Web server (HTTP and HTTPS)
  • 64 GB onboard storage
  • Additional external USB storage connection
  • Full remote control of digitiser parameters
  • Full remote control of broadband sensors, including remote lock, unlock and centre, via web server
  • Supports multiple data formats, including GCF, GDI, miniSEED, CD1.1 and SEEDlink
  • Built-in calibration signal generator: step, sine or broadband
  • Fully integratable with a wide range of multi-disciplinary sensors
  • Mass positions streamed in real-time at high sample rates
  • Switchable gain for individual channels

Read more about the Güralp Affinity in the Affinity datasheet View as PDF



For detailed specifications see the Affinity datasheet View as PDF


Affinity digitiser



Guralp Systems Limited
Midas House
Calleva Park

Tel: +44 118 981 9056
Fax: +44 118 981 9943