A problem with a used scope probe compensation

Discussion in 'General Electronics Chat' started by OutputLogic, Dec 17, 2009.

  1. OutputLogic

    Thread Starter New Member

    Dec 17, 2009
    1
    0
    I've purchased a used P6114B probe for TEK TDS-380 oscilloscope.

    I cannot properly compensate it - there are significant overshoots on a square wave compensation signal.
    Other probes I have work fine with that scope.

    Here is a screenshot : ch1 is a bad probe compensation signal, ch2 a good one


    Can anyone suggest what might be the problem?
     
  2. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Send it back.
     
  3. BillB3857

    Senior Member

    Feb 28, 2009
    2,400
    348
    Make sure the problem follows the probe (try the bad probe on chan 2) . I have seen problems similar when the BNC center connection didn't make good contact with the center pin of the probe connector. Also have seen problems with the AC/DC switch having bad contact.
     
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