M72 - Mezzanine Card with Motion Counter

The M72 M-Module is a timer, counter and comparator with four 32-bit counter units. The four counters work independently in several modes, e.g. counting decoder signals or measuring frequencies. Each counter can be loaded with a preset value and can generate several events. Events can set or reset output signals, which are optically isolated.

The mezzanine card M72 can also be used to generate timed signals. In addition it features line-break detection. The sensor signals are optically isolated and can be used as TTL, RS422 or 24 V inputs.

The M72 is based on the M-Module ANSI mezzanine standard. It can be used as an I/O extension in any type of bus system, i.e. CPCI, VME or on any type of stand-alone SBC. Appropriate M-Module carrier cards in 3U, 6U and other formats are available from duagon or other manufacturers.


  • 4 independent cascadable 32-bit counters
  • 2 comparators per counter
  • Quadrature incremental encoder interface
  • Pulse width/frequency measurement
  • Multimode event generation
  • Customized counter modes via FPGA
  • RS422 or TTL or 24V
  • Optical isolation
  • -40 °C to +85 °C versions