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Oscilloscope continued.....

Discussion in 'Electronic Basics' started by Rylos, Sep 17, 2004.

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  1. Rylos

    Rylos Guest

    Hi Everyone,

    Thanks for the responses I got previously on scopes. I have the opportunity
    to purchase a used Tektronix 465. The guy is local too(about 1 hour away) so
    I could save shipping costs. He's asking $275 firm. Granted I have seen them
    go for cheaper on ebay but then the shipping costs can be high and most used
    scopes on ebay don't come with the manual or any probes (more expense). The
    one he's selling does "contain manual and probe" stated in his ad and he
    also says it is in working order with no external or internal defects. He
    has no digital camera but is going to try and take some conventional photos,
    perhaps scan or something I don't know.

    So I have some more questions for him and I'd appreciate if anybody here
    would like to add to this list. Also can anyone tell me what these scopes
    came with completely when they were new (extra probe tips, connectors, cover
    etc), if it's missing some original stuff perhaps I can use that as
    bargaining leverage, he said "probe" in his ad. I assume it came with two,
    I'll have to clarify that with him. Here are my questions for him now:

    1. Are you the original owner?
    2. How long have you owned it?
    3. Has it ever been re-calibrated to your knowledge and if so how long ago?
    4. Does it come with (blah, blah, blah, insert all original contents here)
    5. Can you please be more explicit about it's appearance? (dirt, scratches)
    6. Do any of the pots buttons or switches seem overly dirty or scratchy?

    That said, assuming it's in good working condition as he states, is $275 a
    fair price? Thanks folks.

    -Dave
     
  2. John Fields

    John Fields Guest

    ---
    How about this:

    Since he's only an hour away, call him up and tell him you'd like to
    come by and take a look at the scope, then put $275 cash in your
    pocket and head on over there. Once you get there you can get him to
    demo it (so you can find out first-hand whether it works or not, and
    how well) and find out what's included and what isn't, etc., etc.,
    etc.

    Then, either buy it or not, and since you've got cash in your pocket
    you might be able to do a little horse trading.
     
  3. John Miller

    John Miller Guest

    7. As you rotate the intensity knob clockwise, does the brightness
    increase proportionately, or does it peak, fall off and climb again?
    (Indicative of a CRT getting long in the tooth.)

    --
    John Miller
    email address: domain, n4vu.com; username, jsm
    Surplus (FSoT):
    New Conn V1 double trumpet case, no logo
    Tektronix 465B oscilloscope with above symptom
     
  4. Joe

    Joe Guest

    When I bought my tek 465B (is yours a B or an A?), I brought a little
    adjustable homemade 555 timer circuit with 2 speaker leads sticking out of
    the board so I could input different frequencies and check both channels. I
    knew ahead of time they did not come with probes. The 465B was the one I
    settled on, this was at a cable company that was liquidating its test
    equipment, and they had about 4 or 5 tek scopes left, so I tested them all.
    My final price was US $150, but no probes, no manual. That was almost a year
    ago and it still works fine. It had last been calibrated in 1991 according
    to the sticker on it. I have since found tek 465B manuals on the web, and
    bought velleman probes (100MHZ) for $29.95, and it was the best investment I
    ever made. Go and visit the guy, bring your money, check it out and maybe
    you can haggle a little with him. $275 is probly a fair price if it works
    ok, but if you can get it for, say $200, that's even better. You may also
    want to check out ebay and see what they are going for there.

    hth,
    Joe
     
  5. Louis Bybee

    Louis Bybee Guest

    Did you happen to locate 465B user, and service manuals in electronic format
    on the web? If so could you share the links?

    Thank you.

    Louis
     
  6. Make sure you ask about or preferably check yourself for screen image
    "burn-in". This is a permanent image burned into the screen from
    having a stationary waveform left on for long periods. A common
    problem with second hand abused scopes.
    Check what probes it comes with too, they could be cheap crappy low
    bandwidth probes which are almost worthless.

    Dave :)
     
  7. $275 for a 465? It had better be in near-mint condition at that
    price. $200 is more reasonable for a used one.

    This, however, is based on my own regional experience (Pacific
    Northwest and Bay Area sources). Things may be different in your area.

    At the very least, I would expect it to be fully operational,
    preferably calibrated within the last two years, and reasonably clean.

    Happy hunting.


    --
    Dr. Anton T. Squeegee, Director, Dutch Surrealist Plumbing Institute.
    (Known to some as Bruce Lane, ARS KC7GR,
    kyrrin (a/t) bluefeathertech[d=o=t]calm -- www.bluefeathertech.com
    "If Salvador Dali had owned a computer, would it have been equipped
    with surreal ports?"
     
  8. Rylos

    Rylos Guest

    Hello Sir,

    I too have already decided that's a bit high especially if it only comes
    with one probe. I sent him my questions but haven't heard back yet. $200
    would be a more acceptable price. Thanks for the response.

    -Dave


     
  9. Joe

    Joe Guest

    Hi Louis,

    Yes, I got the link from someone in this group, but I'll be damned if I can
    remember the website I got the service manual from. It is in .djvu format
    and you have to download the reader from www.lizardtech.com

    Maybe the person who originally posted the links can help?

    Joe
     
  10. TekMan

    TekMan Guest


    By the way: If you get a 465 scope without a manual, no need to worry:
    You can download forfree from bama.sbc.edu or bama.edebris.edu the
    complete 465B manual.
    Which is 97% compatible to 465 .:)

    hth,
    Andreas
     
  11. How do we get a user name and password to download it?
     
  12. NO SPAM

    NO SPAM Guest

    Some just like to get top dollar, without checking to see what the market is
    doing. There are companies out there who sell via catalog/flyer/e-bay who do
    the same, at times - worse, with some similar scopes "higher" than $275 and
    some of those aren't even to be working! So, you got to wonder why they even
    bother. They can't be unloading the stuff too awfully fast. I hate to think
    of all the money they've got sitting there collecting dust.
    NS
     
  13. TekMan

    TekMan Guest


    Why not read the FAQ on bama -- so you'd notice that there is no
    special userid/PW needed for DOWNLOAD.

    But I thing your question aims to ftp-ing in general.
    And, as a genaral rule for ftp download: Your User is the well-known
    anonymous, your PW is your email address .



    happy loading :)


    hth,
    Andreas
     

  14. Still doesn't work, now the problem is too many users, more than 10, connected.

    But thanks anyway.
     
  15. TekMan

    TekMan Guest

    It will NEVER work for you when you DO not READ the homepage
    thoroughly:

    10 users max for bama
    50 users bama.edebris.com

    Now the 1-million-$-question: Where will your chances be better to get
    served?

    Try the edebris mirror-site, and you'll be lucky soon :)

    hth,
    Andreas

    PS: And before you run into the next question: You'll need a djvu
    browser for the 465b manual from bama. On the homepage, the is the FAQ
    that answer how, where and why to get/use it.
     
  16. TekMan

    TekMan Guest

    See other my dated today posting too, pls.
    And one typo from mine (I apologize), the mirror ist named correctly:

    http://bama.edebris.com
     
  17. I got through, and started downloading it, but it was awfully slow, and
    the downloading stopped.

    I resumed the transfer, and it stopped again, I resumed and it stopped
    again, I resumed and then it stopped with an error, and could not be
    resumed again.

    So it is obviously not a well working service with minimum of hassle.

    Anyhow, it is good that it exists at all, and if I ever get really
    desperate for a manual I will try it again.
     
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