Hi,
I was wondering can anyone offer a little advice.
I am trying to develop a system for sampling the mains electricity waveform at a rate of 12 kHz. In order for the data to be useful, it must be sampled at an exact time, disciplined by a GPS receiver.
I can generate a 12 kHz waveform readily from a GPS receiver and PLL, but I am having difficulty sourcing an ADC that has an external trigger (as opposed to an external clock).
More details on the specification I am trying to achieve are available here: http://openpmu.codeplex.com/wikipage?title=OpenPMU GPS Disciplined DAQ&referringTitle=Home
Can anyone comment if they have built anything similar? I am considering using an ARM mbed cpu to manage packaging data from the ADC (SPI) into XML sent via UDP.
All suggestions and comments are much appreciated.
I was wondering can anyone offer a little advice.
I am trying to develop a system for sampling the mains electricity waveform at a rate of 12 kHz. In order for the data to be useful, it must be sampled at an exact time, disciplined by a GPS receiver.
I can generate a 12 kHz waveform readily from a GPS receiver and PLL, but I am having difficulty sourcing an ADC that has an external trigger (as opposed to an external clock).
More details on the specification I am trying to achieve are available here: http://openpmu.codeplex.com/wikipage?title=OpenPMU GPS Disciplined DAQ&referringTitle=Home
Can anyone comment if they have built anything similar? I am considering using an ARM mbed cpu to manage packaging data from the ADC (SPI) into XML sent via UDP.
All suggestions and comments are much appreciated.