Affinity Digitiser

  • 31-bit digitiser and network communications unit
  • Stable and robust Linux-powered unit
  • Option for Elliptic Curve Digital Signature Algorithm (ECDSA) scheme data authentication.
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 seismic instruments to your network.

The Affinity delivers high-quality digitisation with 31-bit resolution. Designed for data quality and durability, the Affinity is a stable and robust Linux-powered unit with on-board storage and networking facilities. An advanced module directly controls power supply to peripherals and reports their voltages via state-of-health communications.

For applications where data verification is critical the Affinity also supports Elliptic Curve Digital Signature Algorithm (ECDSA) scheme data authentication.

The Affinity is available as a four channel or eight channel unit.
  • 31-bit analogue-to-digital conversion
  • Available with four or eight ADC channels
  • Ultra-low-noise: >138 dB of dynamic range @ 100 sps
  • 8 or 16 environmental multiplexed ADC channels
  • Triggering/events subsystem capabilities including STA/LTA, level (threshold), software triggers, per-channel voting and peer-to-peer network voting
  • Four (or eight) concurrent sampling rates of up to 4000 samples per second
  • UTC time-stamped data using a low-power GPS receiver and state of the art timing protocols, Precision Time Protocol (PTP) and Network Time Protocol (NTP)
  • Multi-user Linux operating system with full network support
  • On-board Web server (HTTP and HTTPS) allows full remote configuration of digitizer parameters and broadband sensors, including remote lock, unlock and centre
  • Fixed 64 GB onboard storage with additional connection for external USB storage
  • Records in GCF and miniSEED
  • Supports ECDSA scheme data authentication
  • 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
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