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Help me choose an oscilloscope

Discussion in 'Electronic Basics' started by Rick, Aug 20, 2003.

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  1. Rick

    Rick Guest

    Hi all

    I'm about to buy an oscilloscope (right now, I want chance to use it
    to test some stuff before I go back to work in 12 days)

    My funds are rather limited, and any not spent on the scope will
    likely go to other electronics test gear, of which I don't have much
    (I've just got a Fluke multimeter, logic probe and pair of hands).

    Please give any advice you can re. reliability, facilities and ease of
    use (in that order) of the following choices:

    1) Hitachi. V-1070. 100MHz. Dual Trace, Four Channel Portable Scope
    with Read Out & Delay. Price £225.00

    2) Kikusui. COS-6100A. 100MHz. Dual Trace, Five Channel Portable
    Scope with Delay. Price £187.50

    3) Philips. PM 3240X. 50MHz. Dual Trace Portable Scope with Delay &
    TV Triggering. Price £85.00

    4) Philips. PM 3262. 100MHz. Dual Channel Portable Scope with Delay.
    Price £125.00

    5) Tek. 465. 100MHz. Dual Trace Portable Scope with Delay. C/w:
    Opt’s: 04 & 07. Price £150.00

    These include only a "return within 24 hours of purchase if faulty"

    I mainly do / want to do digital, PIC, 8051, audio, PC interfacing
    (especially ADC/DAC) and digital audio, although I can't rule out some
    lower RF (I can't afford more bandwidth though).

    The Hitachi would be stretching the budget (a lot) but if it is worth
    the extra compared to the others, it's possible.

    Please help,
  2. John Larkin

    John Larkin Guest

    They'd all be OK for what you describe; given limited funds, I'd go
    with 3). Four traces aren't very useful, and the Phillips scopes are
    dull but reliable.

  3. Baphomet

    Baphomet Guest

    Rick -

    Nobody ever went wrong by buying a Tektronix.
  4. Baphomet

    Baphomet Guest

    Just went to their website and the 465 has been discontinued. This doesn't
    mean that the 465 isn't a good scope but rather, if you get one and it needs
    repair or calibration, you're on your own :)
  5. JeffM

    JeffM Guest

    ...about to buy an oscilloscope...
    Disagree on both counts.
    For finding those narrow glitches
    that are freaking out that digital gizmo,
    more bandwidth is always better.
    Buy as much as you can afford.

    For finding timing errors, more channels are better
    (think D flip-flop: input, clock, output, -output, reset).
  6. Rick

    Rick Guest

    Thanks for the response. I was thinking about the multiple channel
    facility for digital circuits. I'll try to get to the shop to check
    them out, rather than order them.

  7. John Larkin

    John Larkin Guest

    Well, you just leave one probe in place and move the other around.
    That way you can see as many signals as you like. An analog scope
    alternates them anyhow, so it never behaves like a logic analyzer.[1]


    [1] Come to think of it, I've never used one of them either.
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