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Oscilloscope Question (Again)

Discussion in 'General Electronics Discussion' started by Supercap2F, Apr 30, 2014.

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  1. Supercap2F

    Supercap2F

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    Mar 22, 2014
    Hey Everyone!

    The main time base on some oscilloscopes can go all the way down to 2 seconds/division and some can only go to 0.5 seconds/division. Will the one that can go to 0.5 seconds/division not be able to read frequencies as low as the one with 2 seconds/division?

    Thanks for the help

    Dan
     
  2. kpatz

    kpatz

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    Feb 24, 2014
    Either scope can read low frequencies (typically down to DC) but the 2/sec div. scope can fit more cycles (or parts of a cycle) across the screen before the trace recycles.

    2 sec/div is crazy slow. The spot would take about 20 seconds to go all the way across. That slow a frequency is more practical on a digital or storage scope than a regular analog CRT scope, since the trace would fade long before it finishes "drawing" it.
     
    Supercap2F and KrisBlueNZ like this.
  3. Supercap2F

    Supercap2F

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    Mar 22, 2014
    So it would not limit me to get one with 0.5 seconds/division?

    Thanks for the help kpatz

    Dan
     
  4. kpatz

    kpatz

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    Feb 24, 2014
    Unless you need to see entire waveforms that are a fraction of a hertz, or a signal over a 20-second time period there's no need for 2 sec/div on a scope.
     
    Supercap2F likes this.
  5. Supercap2F

    Supercap2F

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    Mar 22, 2014
    Ok cool!! Thanks Kpatz!

    Dan
     
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