| What driver is faster -- PCI board or USB unit? |
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| FAQs - Electronics | ||
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Currently, PCI board is our fastest option. The speed of the USB DAC unit is limited by the restrictions of the USB bus, which updates the values once per 1 ms (all 40 channels are updated at once). For the PCI boards, every channel is updated sequentially, with 1 µs delay (measured value; the data sheet for the chip used on the boards says 5 µs).
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