ProDAQ 6171-AA Isolated Precision Strain Gage LXI Instrument

  • Analog Inputs: Each channel of the ProDAQ 6171-AA employs a 16-bit SAR ADC to provide excellent measurement accuracy. The input range can be set from ±10mV to ±10V in a number of fixed steps. Auto-balancing is provided per channel in order to remove offset at higher gains, thus maintaining the full ADC range. Each channel is protected against overvoltage, both short-term transient spikes as well as constant DC voltages up to ±30V. An EMI filter is included per channel to reduce the possibility of error due to high frequency conducted noise.
  • Excitation: The ProDAQ 6171-AA provides a per-channel programmable excitation voltage of up to 20VDC. The positive side excitation is programmable from 0 to +10V while the negative side excitation is programmable from 0 to -10V. Both sides are independent and have a resolution of 0.5mV. This allows the user to set the Common Mode point to 0V, thus reducing the effects of common-mode voltage on signal accuracy. Output current capability is 40mA per channel. By using remote sense lines per channel any losses due to lead resistance will be automatically compensated. The excitation voltage is read back and calibrated using the ADC for the highest excitation accuracy. The channel excitation has a built-in current limit which, if reached, is signaled in software.
  • Simultaneous Sampling: The ProDAQ 6171-AA has a dedicated SAR ADC per channel. This allows for true simultaneous sampling of all channels. The sample rate can be varied from 1Hz to 5kHz with a resolution of 1Hz.
  • Filtering: The ProDAQ 6171-AA has a per-channel programmable 6-pole Bessel anti-aliasing filter with cut-off frequencies of 10Hz, 50Hz, 100Hz, 200Hz, 500Hz, 1kHz and Bypass.
  • Other Features: Has two analog outputs per channel for monitoring purposes. Each channel has an internal Shunt Calibration resistor which can be switched to either quarter-bridge completion resistor.
  • Various Mounting Options: The ProDAQ 6171-AA comes in a 1U high unit suitable for rack mounting in a standard 19” rack if used with the ProDAQ 5725 Rack-Mount kit. The ProDAQ 6171-AA can also be used on the desktop with the ProDAQ 5726 Stackable Tabletop Feet Set.
  • 19”, 1U Solution for 8 Strain Gages, Voltages or IEPE/IPC sensors
  • 120Ω and 350Ω bridge completion
  • Channel Isolation up to 300 VDC (channel to channel and channel to ground)
  • Up to 20V Programmable Excitation per channel
  • 16-Bit SAR ADC per channel
  • 1Sps to 5kSps Sample Rate
  • +/-10mV to 10V Input Range per channel
  • Simultaneous Sampling of all channels
  • Isolated Analog Output: Two analog outputs on all channels for monitoring purposes
  • Shunt Calibration on all channels
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SKU: ProDAQ 6171-AA Category:
Delivery and return
Delivery and return
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Shipping Information
Composition and care
Composition and care



The ProDAQ 6171-AA is an LXI instrument designed for 8-channel galvanically isolated precision strain gage measurements. It supports ¼, ½ and full-bridge completion with 120Ω and 350Ω strain gage completion resistors fitted as standard. It provides an easy to use, cost effective solution for the most demanding strain gage or IEPE/IPC measurement applications.
Each channel is galvanically isolated from any other and also from the chassis, with a working isolation voltage up to 300VDC. This allows any channel not only to float to different common-mode voltage potentials but also eliminates the possibility of ground loop error.
As a standalone LXI instrument the ProDAQ 6171-AA can be directly connected to your network and operated either through the built-in web pages or alternatively integrated into your data acquisition application using the VISA-based industry standard plug & play drivers provided. Multiple devices can be synchronized via the IEEE1588 precision time protocol or optionally via the LXI trigger bus. The unit is equipped with a redundant power supply and two Ethernet ports.



  • General
    • Number of signal channels: 8
    • Isolation: 300 VDC (Channel to channel and channel to chassis)
    • Isolated Analog Output: Two per Channel, ±10V, Filtered, Short Circuit Protected, Continuous On with module power On
  • Analog Input
    • Input Signal Type: Differential, DC Coupled
    • Input Ranges: ±10mV, ±20mV, ±50mV, ±100mV, ±200mV, ±500mV, ±1V, ±2V, ±5V, ±10V
    • Gain Steps: 1, 2, 5, 10, 20, 50, 100, 200, 500, 1000, selectable per channel
    • ADC Resolution: 16-bit
    • ADC Sampling Rates: 1 Sps to 5 kSps, 1Sps resolution
    • Filtering: 6-pole Bessel anti-aliasing analog filter, Programmable, Cut-off frequencies: 10Hz, 50Hz, 100Hz, 200Hz, 500Hz, 1kHz and Bypass
    • Gain Accuracy: ≤ ±0.06% FSO
    • Gain Linearity: ≤ ±0.02% FSO
    • Gain Temp Coefficient: 50ppm/°C typical
    • Input Offset Drift, gain 1: ±0.007%FSO/°C
    • Noise, 1kHz Bandwidth, gain 500, at Analog output: ≤ 1.5mVRMS RTO
    • Input Impedance: 20MΩ typical
    • CMRR, gain 500, DC to 50Hz: ≥ 110dB
    • EMI Filtering: Yes, per channel
    • Channel Input Protection: Yes, ±30V, max. input current 10mA, max. 3A <10ms.
    • Input Connector: D-Sub, 9-pin
  • Excitation
    • Excitation Type: Constant Voltage with auto balancing
    • Excitation Range: 0 to ±10 V, Independent Positive and Negative Supplies
    • Excitation Current: maximum 40mA per channel
    • Excitation Setting: Programmable in 0.1V step
    • Excitation Accuracy: ≤ 0.07% of set voltage
    • Excitation Stability: ≤ 70 ppm/˚C, ≤ 0.01% of set voltage over 8 hours
    • Excitation Monitoring: Offline read back to ADC
    • Excitation Sensing: Internal or Remote sense with line resistance compensation
  • Strain Gage
    • Bridge Completion: ¼, ½ and Full Bridge
    • Completion Resistors: 120Ω, 350Ω
    • Gain, Filter, Excitation: Programmable per channel per software
    • Calibration: Through external calibration source and software
    • Bridge Balancing: Selectable, Up to +/-10mV RTO
    • Shunt Calibration: 499kΩ, 0.1%, per channel
  • Analog Output
    • Output Voltage: ±10V
    • Number of Outputs: 2 per channel
    • Output Resistance: ≤ 1Ω, short circuit protected
  • Control Interface
    • Physical Interface: Two redundant network ports, 10/100/1000 Base-TX
    • Software Interface: SCPI over VXI-11 protocol (VISA), TCP/IP, Web Interface
    • Operating System Support: Windows 10
  • Environmental
    • Temperature: 5 °C to +50 °C (operational), -40 °C to +70 °C (storage only)
    • Humidity: 5% – 95% (non-condensing)
    • Size: 1U, 19”
  • Power Supply
    • Input: 85 – 264V AC, 47 – 63 Hz
    • Power: 150W max.



  • 5725 Rack-Mount Kit
  • 5726 Stackable Tabletop Feet Set



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