Pulse width of 1 us

[hota9912]

I want to output a rectangular pulse with a pulse width of 1us using a multifunction DAQ board. How to find the minimum pulse width from the specifications? For example, for the PCIe-6353, the maximum update rate is 2.86 Ms/s. Is the reciprocal of that 0.35us the minimum pulse width?

Thanks.

[Kevin_Price · Accepted solution]

Yes, that would be correct *if* you need to generate the pulse as an analog output task on an analog output channel.

If the pulse can be a digital logic level (~0V low, ~5V high), you have two other choices:

- a digital output task on a digital line.  This supports up to 10 MHz updates, thus 0.1 microsec pulse width

- a counter task outputting on a PFI terminal.  This supports pulse widths as low as 2 cycles of the 100 MHz timebase, or 0.02 microsec pulse width.

-Kevin P