ME
Advanced Member level 4
www.usb-osc.narod.ru/files/sch.zip
Measurements are not made while DACs (U5 and U6) are operated. Is it still nessesary with filtering?simce said:2. Use of resitor and capacitor (RC filter) or LC filter on VDD of U5 and U6 to reduce digital noise from U5 and U6 injected into analog voltage during operation of DAC.
Yes the FPGA is configured via USB->JTAG inteface at each power-up.simce said:3. How FPGA is cofigured (only via USB/JTAG) or somehow else? Does it has internal configuration memory?
Yes, a short circuit should be mounted, if no microcontroller and LCD is connected to ITX5.simce said:Another question about PWS:
Power is drawn from USB, goes through TRACO DC/DC convertor and goes to 3.3VDGEN and to ITX5, but from where comes 3.3VDG? Does shorcut is supposed to be placed between 3.3VDGEN and 3.3VDG on ITX5?