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MSP430F6747A: Can I use EMDC for higher input frequencies and an AC offset?

Part Number: MSP430F6747A

Hi everybody, 

I would like to use  http://www.ti.com/tool/download/MSP430-ENERGY-MEASUREMENT

now  about  if this toolkit:

  1. Can perform for higher frequencies, such as 5kHz, which is similar to 50/60Hz?
  2. Does it supports an AC signal which has an offset, for example an AC wave 100 ~ 300VAC which rides on 200VAC (which has no 0 point crossing).

best regards

Carlo

 

  • Hi Carlo,

    Thanks for posting your question on E2E and your interest in using the Energy Measurement Design Center (EMDC).

    Colombo Carlo said:
    Can perform for higher frequencies, such as 5kHz, which is similar to 50/60Hz?

    Unfortunately, no. EMDC supports input frequencies between 40 and 70 Hz. By 5 kHz, are you meaning the 100th harmonic (50 x 100 = 5000 Hz)? EMDC does not currently support harmonic measurements, but we're currently evaluating that feasibility.

    Colombo Carlo said:
    Does it supports an AC signal which has an offset, for example an AC wave 100 ~ 300VAC which rides on 200VAC (which has no 0 point crossing).

    I can't say that I've ever heard of this type of offset. I've heard of DC offset but not AC offset. EMDC does include a timeout that triggers the calculations to occur every 2 Hz if no zero crossings are detected. However, without zero-crossings, other results such as frequency will not work correctly.

    Regards,

    James