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UniDAQ4 is a data acquisition system tailored to vibration analysis, acoustics, machine and condition monitoring.

Data Sheet

System Integration




For many applications, in addition to the primary measurement signals, process variables such as rotation speed and angle, temperature, pressure and power must be recorded and evaluated. UniDAQ4’s universal inputs accept voltages, vibration sensors and microphones, as well as 4-20 mA current loops for auxiliary signals. The robust electrical  design ensures precise resolution of the smallest signal details even in harsh industrial environments.

Another advantage : You can easily integrate UniDAQ into your existing infrastructure with add-ons on the  expansion port: Fieldbuses, industrial networks, storage media, wireless communication as well as a user interface can be easily implemented. This makes UniDAQ particularly suitable for applications  requiring a combination of various devices for data acquisition, processing and communications.

Due to its powerful digital signal processor, UniDAQ can also perform tasks as a stand-alone-device, from data pre-processing to complex numerical analysis – as an alternative to data streaming via USB or Ethernet and post processing on an external PC. A comprehensive C library is available for DSP programming, covering device configuration, data acquisition and communication.

The UniDAQ4 proves a high degree of flexibility for a wide range of use cases, thereby avoiding integration hassles and saving costs.


Analogue Inputs 8 (16 with optional expansion board)
Input Coupling DC, AC 1Hz and 150Hz, GND, single-ended or differential
Input Range ±1.2V and 12V voltage input, ±4.8 and 32 mA current input
Input Impedance 1.8 MΩ || 30pF differential, 900 kΩ || 50pF single-ended
Input Leakage < ±50nA
Overvoltage Protection ±42V
A/D Converter 24 bit resolution, simultaneous sampling Delta-Sigma, wideband brickwall or low-latency Sinc5 digital filter
Sampling Rate 0.5 to 256 kS/s, internal 50ppm timebase with 0.026ppb resolution external synchronisation via dedicated SYNC input or optionally by IEEE1588 PTP
Alias Rejection > 110dB
Crosstalk < 130dB at 10kHz
THD < 127dB / 112dB at 1kHz differential / single-ended in 12V range
< 115dB / 108dB at 1kHz differential / single-ended in 1.2V range
SFDR 138dB in 12V range, 137dB in 1.2V range at 102.4kS/s
SNR 107dB in 12V range, 106dB in 1.2V range at 102.4kS/s
IEPE Supply 4mA ±5%, 22V compliance, short and open circuit detection
4/20mA Supply 24V, max. 50mA per channel, 200mA total
Digital Inputs 4, TTL (GPIO, frequency, pulse-width, quadrature encoder)
Digital Outputs 2, TTL (GPIO, PWM)
Communication Ports USB 2.0 high-speed device, 100Base-Tx Ethernet
Signal Processing TMS320C6746 DSP, 456MHz, 32MBytes DRAM
Expansion Port GPIO, SPI, SD/MMC/SDIO, USB
Power Supply 9-36V DC, 6.5W typical (8 channels IEPE, 100kS/s, USB streaming), max. 12.5W
Size 160 x 100 mm Euro Card Format, 15mm height
Isolation 350VAC / 500VDC functional isolation between analogue inputs and digital circuits/power supply
Operating Conditions 0-50°C ambient temperature, max. 95% humidity

Application Areas

  • Vibration analysis and machine condition monitoring
  • Acoustic measurements and microphone array processing
  • Smart power grid monitoring
  • Data acquisition for research and development

Key Features

  • 8 simultaneously sampled inputs, Delta-Sigma converter, 24-bit, 256kS/s
  • 4mA IEPE and 24V sensor supplies
  • 1.2 and 12V voltage input range, 32mA current
  • Trigger, angle and velocity TTL inputs
  • 456 MHz floating point DSP (TMS320C6746) with 32 Mbyte DRAM
  • USB2.0 Device Port and 100Base-Tx Ethernet
  • Expansion Port for mass storage, industrial network and fieldbus, wireless connectivity, GPIO, and more
  • Isolation barrier between analogue and digital circuits
  • 9-36V single supply