MCC 172

The MCC 172 is not IEC 61672-1 class 1 compliant.

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The DAQ HAT support is currently limited to the 32-bit OS.

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No, the MCC 172 does not have the circuitry for detecting a faulty accelerometer. The easiest way is to measure its bias voltage using a multimeter. You can use a splitter and connect a DC multimeter in line to measure the devices Bias voltage. If it’s at the supply voltage (23V) or at 0 volts, then there is a problem with your cabling or the device itself. If the meter reads somewhere in the middle, then your device is OK.

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The MCC DAQ HATs which include the MCC 172 are only compatible with the Raspberry Pi SBC. No additional driver support for other SBCs is provided.

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The MCC DAQ HATs which include the MCC 172 are only compatible with the Raspberry Pi SBC.

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The MCC 172 is designed to operate with one or a multiple of MCC 172s, but an external trigger signal to the Master ‘172 is a requirement. Connecting the TRIG input to an unused GPIO is possible however MCC does not provide support or suggestions on how to implement that.

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Yes, the MCC 172 includes an anti-aliasing filter. Alias-free bandwidth is calculated using the following formula: 0.453 * fS, Alias rejection 100 dB @ 51.2 kS/s. A description and specifications on the filters that are included with the MCC 172 can be found in our User’s Guide at: https://mccdaq.github.io/daqhats/overview.html#id37

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For a single channel, the maximum sampling rate is: 51.2 kS/s/ch max. For a single MCC 172 HAT, 51.2 kS/s/ch × 2 channels: 102.4 kS/s max. For Multiple MCC 172 HATs: Up to 307.2 kS/s aggregate. This is dependent on the load on the Raspberry Pi processor and the SPI interface. Note: when using multiple MCC 172s on one RPi 4, 307.2 kS/s / 51.2 kS/s = 6 channels running at full speed. This equates to three, MCC 172 HATs operating at their maximum sampling rate per channel.

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Yes, the MCC 172 will be compatible with the AC102 accelerometer that you listed in your question. The MCC 172 supports a 23 V max excitation source and a 4 mA constant current. As long as the accelerometer specifications falls in line with the MCC 172…which it does, you will be all set.

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Currently, there is no LabVIEW support for the MCC HATs.

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Yes, current support includes the Raspberry Pi 4 model B.

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