cold start

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Fixing EasyDABv2 to prevent generating noise during cold start.


For all boards shipped before 1 March 2018 there is hardware bug found, when EasyDABv2 board starts-up at first time (so-called cold-start) it's producing wide-band noise during 1 second before FPGA boots-up. To fix this issue You need to solder 2K or 2.2K resistor to TXENABLE pin of DAC and to the GND (Ground pad).

Here is a video of turning-on the board (at the top-right corner) and it's spectrum with issue itselve BEFORE FIX and AFTER FIX:

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