The new MCC 172 is a two-channel, high-speed DAQ HAT (Hardware Attached on Top) that allows the taking of sound and vibration measurements from IEPE sensors, such as accelerometers and microphones. The device has two, simultaneous, 24-bit analog inputs that are capable of providing sample rates of up to 51.2 kS/s per channel. Each of the two channels has a dedicated A/D converter. The ADCs share the same clock and are synchronized to start conversions at the same time for synchronous data.
Up to eight MCC HATs can be stacked onto a single Raspberry Pi computer. Measurement computing also offers a selection of DAQ HATs for the Raspberry Pi, which allow users to develop multifunction, Pi-based solutions with combinations of analog input, output, and digital I/O. It is possible to synchronise multiple MCC 172 HATs to a single sampling clock, which can be programmed for sampling rates between 51.2 kS/s to 200 S/s.
The MCC 172 board plugs into Raspberry Pi using the board’s 40-pin general-purpose I/O (GPIO) connector. The MCC 172 can be used with all Raspberry Pi models that feature the 40-pin GPIO connector. The MCC board is powered through the Raspberry Pi’s 5V supply through the GPIO header.
Analog input signals can be connected to either the 10-32 coaxial inputs or to the screw terminals. Only a single source can be connected to a channel at a time
For support, the open-source MCC DAQ HAT Library of commands is available in C/C++ and Python allows the development of applications on Linux. The library can easily be downloaded from GitHub. Measurement computing also supplies comprehensive API and hardware documentation.