Ideas Test

2 VOTE

Add 'microseconds' as units for recording duration.

Logic lets you specify recording duration as a sample count or time. The minimum time unit is milliseconds. That's an awfully long time when you're working at higher frequencies. Fractional milliseconds do work, but could 'microseconds' be added as a unit?

  • Avatar32.5fb70cce7410889e661286fd7f1897de Guest
  • Jun 26 2018
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  • Avatar40.8f183f721a2c86cd98fddbbe6dc46ec9
    Guest commented
    26 Jun 18:37

    When capturing, the software typically processes about 33ms of data at a time. (less when running at very high sample rates, but usually > 10 ms). The capture system simply stops the capture once it has recorded enough samples. It doesn't trim that data down to the specified capture length, so you will almost always end up with a little more data than you're looking for. If you're only trying to record 1us, then you will end up with 33,000 times more data, which I can see would be annoying.

    In order to build this, we'll need to first support this:
    http://ideas.saleae.com/forums/214303-saleae-ideas/suggestions/8981488-trim
    Then I think it would be easy to automatically trim the capture to the specified size.

  • Avatar40.8f183f721a2c86cd98fddbbe6dc46ec9
    Guest commented
    26 Jun 18:37

    I take that back; fractional milliseconds do not work. It also captures more data than it was supposed to post-trigger, eg I told it to give me 1ms and it gave me 5.