The PCI length measurement board APCI-3701 is designed for the acquisition of 16/8 inductive transducers (Half-Bridge, LVDT, Knäbel) with a 16-bit resolution. Furthermore, it has 16 digital inputs and outputs, optically isolated. The software ConfigTools included in delivery has a database for connecting/calibrating a large range of industry-standard transducers, such as Solartron, Tesa, Marposs, Schlumberger, Peter & Hirt, Mahr, RDP, Schaevitz, SMPR contrôle etc. The board is suited for dynamic measurement, e.g. for measuring moving parts or applications with time-critical measurement cycles – especially in test equipment with several sensors.

Categories: , ,


With the length measurement board APCI-3701, you can connect directly and acquire up to 16 half-bridge or LVDT transducers. The calibration software “ConfigTools” guides you through each step of the installation, beginning with the selection of a transducer from a database including more than 50 pre-calibrated transducers up to testing each single channel.


  • PCI interface to the 32-bit data bus, 3.3 V or 5 V
  • Acquisition of 8 or 16 inductive transducers (half-bridge, LVDT, Knäbel)
  • 16-bit resolution
  • Sampling rate depending on the transducer: APCI-3701-8/-16: from 2 to 20 kHz
  • Measuring frequency programmable through software: Standard version APCI-3701-8/-16: from 2 to 20 kHz (50 kHz on request)
  • Conversion triggered through software, digital input or timer
  • End of conversion through software and/or interrupt
  • PCI-DMA access
  • Onboard FIFO
  • Sequence RAM
  • 16 digital inputs and outputs, optically isolated, 24 V
  • Connection of the transducer through an external box PX3701-8 or -16. The box type depends on the transducer, please order separately.
  • Software operation
  • Automatic setting of the input levels (gain and offset) acc. to the transducer sensitivity
  • Tool for the individual calibration of the transducers with transducer database
  • Database for connecting/calibrating a large range of
    industry-standard transducers (APCI-3701-8, or -16):
    • Solartron • Tesa • Marposs • Schlumberger
    • Peter & Hirt • Mahr • RDP • Schaevitz
    • SMPR Controle • Knäbel

Safety features

  • Input filters
  • Diagnostic function in case of short-circuits or line break
  • Noise neutralisation of the PC supply


  • Gear wheel control
  • Gauge block
  • Acquisition of sensor data
  • Quality control
  • Industrial process control
  • Automatic parts control
  • R&D Instrumentation

Software drivers

ConfigTools (supplied with the board)

  • Easy transducer calibration
  • Step by step from the transducer selection up to testing each single channel.
  • Database with more than 50 pre-calibrated transducers
  • Update of the APCI-3701 firmware

Standard drivers for:

  • Linux
  • 32-bit drivers for Windows 8 / 7 / Vista / XP / 2000
  • Signed 64-bit drivers for Windows 8 / 7 / XP
  • Real-time use with Linux and Windows on request

Drivers and samples for the following compilers and software packages:

  • Microsoft VC++ • Borland C++ •
  • Visual Basic • Delphi
  • LabVIEW • LabWindows/CV

ADDIPACK functions:

  • Transducer • Timer • Digital input • Digital output

On request:

Further operating systems, compilers and samples. Driver download: www.addi-data.com/downloads


Accessories for PC Boards

Find all the necessary and compatible accessories right here



64-bit drivers for Windows and drivers for Linux as well as programming samples are included.
Real-time drivers for Linux and Windows are available on request.

For Linux



English version French version German version



English version

GREEN for the new products
ORANGE for products in end of life