How do I tell if the clock is working properly?

Discussion in 'General Electronics Chat' started by skyjeff185, Feb 11, 2007.

  1. skyjeff185

    Thread Starter Member

    Jan 27, 2007
    13
    0
    The circuit design is as in the picture

    Anyone can suggest me a way to test this clock to see if it's working properly?

    Thx

    [​IMG]
     
  2. thingmaker3

    Retired Moderator

    May 16, 2005
    5,072
    6
    Use oscilloscope or frequency counter.
     
  3. skyjeff185

    Thread Starter Member

    Jan 27, 2007
    13
    0
    but how should I config. the oscilloscope?? I got no input.
     
  4. thingmaker3

    Retired Moderator

    May 16, 2005
    5,072
    6
    I'm not sure I understand the question. If you want to know where to check, tie the grounding clip to ground and put the probe tip on pin two of the chip. If you want to know how to set up the scope in general, set for 1v per vertical division and 0.1 or 0.01uSec per horizontal division. If you want to know how to set up a particular scope, check the user manual. (Many manuals are available online if you have a hand-me-down scope like mine.)

    If none of the above addresses your question, then I apologise for my confusion.
     
  5. skyjeff185

    Thread Starter Member

    Jan 27, 2007
    13
    0
    yes. Thx. But what i'm really asking is... pin 5 should connect with what? 5V source? ground? or just left it open?
     
  6. thingmaker3

    Retired Moderator

    May 16, 2005
    5,072
    6
    That is indeed a good question. Where does the scematic come from?
     
  7. skyjeff185

    Thread Starter Member

    Jan 27, 2007
    13
    0
    it should be a clock signal for a mp3 decoder (STA013 to be exact). Since the chips is not working at this stage (because it depends on something else), i'm just looking for a way to test the clock only. I figure out a way just dunno if it works...
    the node 5 actually connected the output of a 2 input AND gate; with its input being a 5Vdc and output of clock (node 2). You think this may work?

    THX
     
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