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What does the symbol mean?

Discussion in 'General Electronics Discussion' started by Chengjun Li, Mar 27, 2015.

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  1. Chengjun Li

    Chengjun Li

    84
    7
    Oct 21, 2014
    Hi,

    I have a function generator Agilent 33250A,
    upload_2015-3-27_15-27-14.png
    On it output port, it has a symbol like shown below.
    upload_2015-3-27_15-27-54.png
    What does it mean?
    The function generator has an inner circuit like
    upload_2015-3-27_15-29-57.png ,
    The shield is connected to the ground through a resistor and a capacitor, but I really don't see there is any relation with 42Vpk.
    Also in my Agilent 6614C
    upload_2015-3-27_15-32-33.png
    there is a symbol
    upload_2015-3-27_15-33-25.png
    Could anyone tell me what does it mean?

    Thanks.
     
  2. hevans1944

    hevans1944 Hop - AC8NS

    4,272
    2,012
    Jun 21, 2012
    The symbol on the 33250A means the shield of the BNC is not connected to Earth ground, but will tolerate up to 42 V peak voltage between the shield and Earth ground.
    The symbol on the 6614C means the power supply outputs are not connected to Earth ground, but can be "floated" ±240 VDC with respect to Earth ground without damage to the power supply. Handy for stacking multiple power supply outputs.
     
    Chengjun Li likes this.
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