Wavetek 180 connection to oscope?

Discussion in 'General Electronics Chat' started by pastinsain, Sep 9, 2012.

  1. pastinsain

    Thread Starter Member

    Aug 25, 2012
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    2
    Just got a vintage wavetek 180 sweep function generator. I want to connect this directly to my oscope.

    1) can I just buy a BNC male to male cable ? coax? and directly connect it?
    Or is there a special BNC cable that must be used?

    Thank you for the info
     
  2. ErnieM

    AAC Fanatic!

    Apr 24, 2011
    7,394
    1,606
    The BNC should work OK. Some generators want a 50 ohm load, but you can get them in a small unit with BNC's on both ends, 1 male 1 female so it sits inline.

    Caution: $$$
     
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  3. pastinsain

    Thread Starter Member

    Aug 25, 2012
    160
    2
    Do you mean the BNC cable has a built in resistor? $$$
    Also will the coax type cable create capacitance?

    Could I just use an RCA audio cable connected to a BNC jack?
    BNC male to rca female jack

    Lastly just build my own BNC cable.
     
  4. MrChips

    Moderator

    Oct 2, 2009
    12,449
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    For non-critical situations, you don't need a fancy BNC cable.
    A simple piece of hook-up wire from center-pin to center-pin will work, though not elegant.

    There is also such a thing as a male BNC to banana jack adapter.

    [​IMG]

    or you can use this:

    [​IMG]
     
    Last edited: Sep 9, 2012
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  5. pastinsain

    Thread Starter Member

    Aug 25, 2012
    160
    2
    do you connect the oscope ground to the generator ground?

    You mentioned to use just the center pin on both oscope and generator.
    and no ground?
     
  6. MrChips

    Moderator

    Oct 2, 2009
    12,449
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    Most scopes and function generators already have their BNCs on chassis GND.

    Note that I am cheating here. For proper performance, use a male-to-male BNC cable as you originally suggested. You do not need a 50Ω terminator.
     
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