DATA ACQUISITION

We have developed a range of data acquisition units that address the diverse requirements of our customers. 

Whether you are looking for low-power capability, secure authentication, flexible networking capabilities, high quality data or ultra-low-latency, we have a 24-bit digitiser that can deliver the features you need.

As well as as our stand-alone data acquisition units, we also offer digital instruments such as Fortimus and Radian, as well as analogue sensors with integrated digitisers such as the 3ESPC Series, 6 Series and 40 Series instruments.



Güralp Minimus

Minimus - A revolution in miniature!

The diminutive Güralp Minimus is an advanced 'smart' 24-bit seismic digitiser, packed with a host of features that make it the ideal 'plug-and-play' solution for rapid deployments and multi-scale networked arrays.

For Earthquake Early Warning applications, the Minimus features include industry standard triggering algorithms (STA/LTA); multi-instrument voting to mitigate false positive alerts; Common Alert Protocol (CAP) for automated emergency warning; plus an ultra-low-latency mode which when used with our GDI protocol means network transmission can be achieved in 40 milli-seconds (network dependent).

Available in 4-channel (Minimus) or 8-channel versions (Minimus+).

The four channel Minimus can simultaneously accommodate a triaxial analogue sensor, an auxillary input e.g. for infrasound; a Radian posthole or borehole instrument; plus its own internal MEMS accelerometer (2g)

  • 24-bit, four-channel (Minimus)
  • Compact form factor -
    Minimus: 134 mm x 99 mm x 45 mm and weighing just 674 g
  • Compatible with all triaxial analogue seismic sensors with a voltage output
  • Internal MEMS accelerometer (2g)
  • Simultaneously accommodate a triaxial analogue instrument, an additional auxilary input plus a digital feed from a Radian posthole or borehole
  • Ultra-low-latency mode for Earthquake Early Warning
  • Industry standard triggering algorithms for EEW (STA/LTA)
  • Multi-instrument voting for mitigating false positive alerts
  • Common Alert Protocol (CAP) enabled for automated emergency warning
  • Identification of IP address via Güralp Discovery software platform and Cloud registry server
  • Remote instrument and data management via Güralp Discovery
  • Güralp Vü Bluetooth Android and iOS App for installation integrity checking
  • Hot-swappable data storage and dual redundant microSD cards
  • GNSS compatible with GPS/GLONASS and BeiDou protocols
  • Scream! compatible

Minimus+, all the power and capability of Minimus but with eight primary digitisation channels and Power over Ethernet.

  • 24-bit, eight-channel digitiser
  • Compact form factor: 134 mm x 139 mm x 45 mm and weighing just 782 g
  • Compatible with any analogue seismic sensors
  • Internal MEMS accelerometer (2g)
  • Simultaneously accommodate two triaxial analogue sensors, two auxilary inputs plus a digital feed from a Radian posthole or borehole
  • Ultra-low-latency mode for Earthquake Early Warning - when used with GDI protocol, transmission can be achieved in 40 ms
  • Industry standard triggering algorithms for EEW (STA/LTA)
  • Multi-instrument voting for mitigating false positive alerts
  • Common Alert Protocol (CAP) enabled for automated emergency warning
  • Identification of IP address via Discovery and Cloud registry server
  • Remote instrument and data management via easy-to-use Discovery software
  • Güralp Vü Bluetooth Android and iOS App for installation integrity checking
  • Hot-swappable data storage and dual redundant microSD cards
  • Select from GNSS (GPS, GLONASS or BeiDou) or PTP (Precision Time Protocol) timing sources
  • Supports active Power Over Ethernet (POE) which significantly reduces complexity when installing local arrays
  • Scream! compatible

Güralp Affinity

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.

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 Digital Signature Algorithm (DSA) 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 DSA 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

Güralp DM24

High-quality seismic digitiser with full 24-bit resolution

DM24 digitisers offer high-quality full 24-bit resolution, designed for data quality and durability. As well as being available in these stand alone units, the DM24 digitisers are also integrated into a number of our digital instruments.

DM24SxEAM - adaptable digital acquisition system housed in a stainless steel enclosure with lifting bracket
DM24SxEAMU - digital acquisition system housed in a robust Copolymer Polypropylene case with removable USB storage for deployment in the field

A sophisticated and adaptable digital acquisition system housed in a robust Copolymer Polypropylene case with removable USB storage for, ideal for deployment in the field.

Available with 3 or 6 24-bit ADC channels.

  • Peli™ case enclosure3 or 6 channel 24-bit ADC (primary)
  • 1 auxiliary 24-bit ADC (used for auxiliary input and calibration signal)
  • 8 environmental channels (low sample rate)
  • Integrated Güralp enhanced acquisition module (EAM)
  • STA/LTA triggering
  • RS-232 serial data interface
  • TCP/IP Ethernet port
  • Linux OS with web server
  • Data recording in GCF and MiniSEED
  • Data streaming protocols: GCF (Scream!), SEEDlink, CD1.1 and GDI-link
  • Removable USB Storage with 16 GB USB stick (option to increase removable USB storage to 64 GB)
  • IP67

A sophisticated and adaptable digital acquisition system housed in a stainless steel enclosure with lifting bracket. Available with 3 or 6 24-bit ADC channels.

  • Stainless steel enclosure
  • 3-channel 24-bit ADC (primary)
  • 1 auxiliary 24-bit ADC (used for auxiliary input and calibration signal)
  • 8 environmental channels (low sample rate)
  • Integrated Güralp enhanced acquisition module (EAM)
  • Variable gain, ×1, ×2, ×4, ×8, ×16, ×32, ×64
  • STA/LTA triggering
  • TCP/IP Ethernet port
  • Internal 16 GB Flash memory with USB 2.0 port
  • Linux OS with Web server
  • Data recording in GCF and MiniSEED
  • Data streaming protocols: GCF (Scream!), SEEDlink, CD1.1 and GDI-link
  • IP68 - protection against effects of prolonged immersion at 3 m depth for 72 hours

Güralp NAM

Versatile seismic network management

The NAM is a stable, robust data hub with unrivalled configurability, ideal for large or complex regional and national arrays and other multi station monitoring solutions.

As a communications hub, the NAM acquires multiple data streams from connected instruments (either local or remote, over serial or IP communications) and acts as both a data store and data transmitter.Additionally, it can deliver real-time protocol conversions to a variety of seismic formats.

For stations where access to GNSS (Global Navigation Satellite Systems) is impractical, the NAM can also operate as a Network Time Protocol (NTP) server, synchronising the remote stations to a local GNSS receiver.

  • Stable, robust and flexible for confident long-term deployments with total autonomy
  • Designed to act as a data concentrator in seismic networks, capable of acquiring data from up to 500 instruments at 100 sps
  • Control using either Web interface or the console accessed via video, serial or SSH
  • Multi-user Linux operating system
  • Ethernet LAN (10/10 0/10 0 0 0Base-T) 802.1q tagged VLAN support
  • Full TCP/IP support with PPP
  • LCD display for status information
  • 8/16/24 RS-232 port expansion options

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Güralp Systems Ltd.
3 Midas House, Calleva Park
Aldermaston, Reading
RG7 8EA
United Kingdom

Tel: 01189 819056
Email: sales@guralp.com
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