TAU Advanced (TAU Mk2)

TAU Mk2

Product Overview

The main differnce between the TAU Advanced (Mk2) and the TAU Standard (Mk1) are additional inputs for environmental (temperature, air pressure) or other scientific channels, like tilt.

The TAU digitizers generate two separate streams of data, one based on a FIR “acausal” filter, while the other stream is based on a causal filter with low latency data output. Data latency is less than 10 milliseconds for a 1000 sample per/second data stream.

Four different sample rates per channel can be output concurrently. The 8 channel inputs of the digitiser have an adjustable gain stage providing a versatile high dynamic range analogue input. For each channel the gain can be controlled independently.

Data are stored on two redundant SD cards, which can be removed without case disassembly. Data output from and communication with the devices is via USB or Ethernet ports.

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Key Features

Digitizer Characteristics

- 8 channel, 24-bit

- Independent FIR-Filters causal and acausal

- Causal datastream with low latency

- Dynamic range for 10 Hz sampling rate: 138.4 dB, for 100 Hz: 134.5 dB, for 1 kHz: 122.2dB

- four options for gain setting

Enclosure

- Anodized Aluminium

- Weight 1.2 kg.

- Dimensions: 185x100x50 mm

- Waterproof as per IP68 standard.

Data Storage

- Format: MiniSEED or Proprietary Data Format

- Internal memory 8 GByte

- Two removable SD Cards 32 GByte


 Power and Electronics

- Power consumption < 1.5 Watt within the operating range from 9 to 36 Volt.

- Input power is protected against reversed polarity.

- Transient suppression

To obtain a detailed data sheet for this digitizer, please contact Gaiacode Headquarters

 Disclaimer: The product specifications and the stated data are subject to change without prior notice.

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References

  • Ref 1 USHER, M.J., BURCH, R.F. and GURALP, C.M., “Wide-band Feedback Seismometers”, 1979. Physics of the Earth and Planetary Interiors, 18: 38-50.
  • Ref 2 M,J, USHER and C.M. Guralp, “The design of miniature wideband seismometer” Geophys. J.R. ast. Soc. (1978)-55 (605-613) ,
  • Ref 3 GURALP, C.M., “The Design of a Three-component Borehole Seismometer”, 1980. Ph.D. Thesis, Univ of Reading.
  • Ref 4 GURALP C.M. Patent Application, No: 7909579 Filed: 19th March 1979 (declaration priority from Appln No: 10279/78 Filed: 15th March 1978) “Vertical Seismometer”.
  • Ref 5 GURALP C.M. United States Patent Application Number: 4,280.206 March 1979. SEISMOMETERS.
  • Ref 6 GURALP C.M. UK Patent Application GB 2-144-287-A. July 1983 Analog-to-digital converters for Seismometers. The National Research Development Corporation (UK)
  • Ref 7 GURALP C.M. UK Patent Application No. 1900719.4; Title: Infrasound Detector [M&S-IRN.FID4315516]