Help with purchasing probes for my Tek 2465B

Discussion in 'General Electronics Chat' started by AcousticBruce, Mar 21, 2014.

  1. AcousticBruce

    Thread Starter Active Member

    Nov 17, 2008
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    I just bought a Tek 2465b 400Mhz 4CH scope from a lady around the corner. It has no probes with it and I need to get some!

    P6137
    P6138
    P6134

    All of these are 400Mhz probes from Tek. I was looking on Ebay. A lot of these are from China, and frankly, I do not want to purchase this stuff from China. I was wondering, does anyone know of this brand?

    http://www.amazon.com/Pomona-6498-M...8&qid=1395402313&sr=8-1&keywords=400mhz+probe

    Is this a good probe, or should I stick with purchasing Used Tek Probes? Or any other Ideas.
     
  2. GRNDPNDR

    Member

    Mar 1, 2012
    435
    7
    can't you get the probes from tek's website?
     
  3. crutschow

    Expert

    Mar 14, 2008
    13,014
    3,234
    Pomona is a California company and sells quality products.
     
  4. crutschow

    Expert

    Mar 14, 2008
    13,014
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    Have you priced their probes? ;)
     
  5. GRNDPNDR

    Member

    Mar 1, 2012
    435
    7
    Actually yes, but only for my needs.... a little pricey but my main turn off is shipping to Canada....we always get screwed.
     
  6. bountyhunter

    Well-Known Member

    Sep 7, 2009
    2,498
    507
    Which is why I bought the cheaper Chinese probes off ebay. Cost about $8/pair and work fine. At that price, it's worth the risk.
     
  7. bountyhunter

    Well-Known Member

    Sep 7, 2009
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    I assume you mean the import tariffs?
     
  8. AcousticBruce

    Thread Starter Active Member

    Nov 17, 2008
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    you cannot buy 400Mhz probes for 8 dollars a piece. haha.
     
  9. bountyhunter

    Well-Known Member

    Sep 7, 2009
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    Yeah. I am wondering if you are of the mistaken belief that you have to buy 400 MHz probes to use if the scope has 400 MHz bandwidth.....

    If you are buying your lab equipment from a lady around the corner, I suspect 100 MHz probes would be more than adequate.

    But if you are convinced you need 400 MHz probes, go for it.

    BTW: the probe you listed from Pomona is a 100:1 ratio probe. For most general uses, the signal from it will be too small. It's typically used for HV apps or apps where even the slightest amount of capacitance will upset the circuit.

    The Tek 6137 400 MHz probe is a 10X probe, not 100X.
     
  10. crutschow

    Expert

    Mar 14, 2008
    13,014
    3,234
    You should consider a switchable probe that can used as either a 10:1 or 1:1 probe. The 10:1 probe is good for most purposes for minimum circuit loading but the 1:1 is useful for low level audio or other low frequency applications where you may need the additional factor of 10 gain a 1:1 probe give.
     
  11. bountyhunter

    Well-Known Member

    Sep 7, 2009
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    +1 Definitely need that.
     
  12. AcousticBruce

    Thread Starter Active Member

    Nov 17, 2008
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    0

    I got lucky, the lady around the corner is from craigslist and I was looking for a 2400 series Tek scope just for bad-assness. I was reading somewhere that you can miss out on some inductive spiking at high MHz so more is always better.


    I at least want one 400Mhz probe and yes 10:1 makes sense. Is there a 10:1 400Mhz probe you know of?
     
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