Oscilloscope Delay Button

Discussion in 'General Electronics Chat' started by newbie217, Oct 27, 2009.

  1. newbie217

    Thread Starter Active Member

    Apr 12, 2009
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    What is the purpose of the oscilloscope delay button? What does it do exactly?

    Thanks!
     
  2. ELECTRONERD

    Senior Member

    May 26, 2009
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    The purpose of the "Delay Time" button or dial is to zoom into a single waveform from multiple points on a wave. So suppose I had a wave that consisted of three different square waves that are a different frequency. The delay time enables me to zoom into any of those different square waves to examine it more closely.

    Austin
     
    Last edited: Oct 27, 2009
  3. SgtWookie

    Expert

    Jul 17, 2007
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    It would help a great deal to know the context of your question.

    Are you talking about an actual O'scope, or a simulation of an actual O'scope?

    What is the manufacturer and model number of the O'scope?

    Very generally, a delay button might enable/disable a sweep start delay, which could be fixed or variable.
     
  4. newbie217

    Thread Starter Active Member

    Apr 12, 2009
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    so what if the delay button was not enabled? The waveforms would look different as you zoomed in more closely?

    Is there any reason not to use the delay?
     
  5. newbie217

    Thread Starter Active Member

    Apr 12, 2009
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    sorry, to be more clear I am using a typical tektronix dpo oscope. I think its rated at 500 MHz resolution.

    so far I've noticed that the time scale will shift when I activatethe delay, but the waveforms always look the same w/ or w/o delay used (from what I've noticed)
     
  6. hgmjr

    Moderator

    Jan 28, 2005
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    What oscope model are you using?

    hgmjr
     
  7. newbie217

    Thread Starter Active Member

    Apr 12, 2009
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    Tektronix 3054B. I've read the user manual description but wanted something a little more concrete.
     
  8. ELECTRONERD

    Senior Member

    May 26, 2009
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    What does the manual say about your "Delay Time" knob? Usually your able to select a certain time by rotating the knob, is it just a single button?
     
  9. newbie217

    Thread Starter Active Member

    Apr 12, 2009
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    0
    It's a single button.

    The manual says "Enables delayed acquisition relative to the trigger event.
    Use horizontal POSITION to set the amount of delay."

    Is it as self-explanatory as that? I guess I just haven't seen the need to use it yet.
     
  10. ELECTRONERD

    Senior Member

    May 26, 2009
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    Yeah, it's just what I thought it was. You press the button if you want to zoom in and using the "horizontal position" you can select how far. The greater the time you select will zoom in certain points on the waveform father. This technique is generally used for digital waveforms and will be applied in more complex situations.
     
  11. SgtWookie

    Expert

    Jul 17, 2007
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    Yep, it's as simple as that.

    You might find this handy when looking at a long train of a digital signal, where you only want to look at a portion of the signal.
     
  12. hgmjr

    Moderator

    Jan 28, 2005
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    There are several sections that explain how to use the "delay button" in the manual that I downloaded from the tek website.

    hgmjr
     
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