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  • OWON scope probes

    From peter@peter@easthope.ca to sci.electronics.repair on Sun Aug 10 14:13:15 2025
    From Newsgroup: sci.electronics.repair

    Hi,

    The OWON HDS2202S scope purchased recently has probes similar to
    these. https://www.ebay.ca/itm/364694404614

    How is the hook tip removed to expose the point? Hooks on other
    probes I've used, pull off. I've tugged on this a little but don't
    want to break it. Unscrew it? Pull harder?

    For sake of interest the OWON HD3 series is a grey color and appears
    to be marketed in EU. Other than color, how do they differ from the
    blue HDS2 series marketed to North America?

    Thx, ... Peter E.


    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Jeff Liebermann@jeffl@cruzio.com to sci.electronics.repair on Sun Aug 10 20:20:57 2025
    From Newsgroup: sci.electronics.repair

    On 10 Aug 2025 14:13:15 -0700, peter@easthope.ca wrote:

    Hi,

    The OWON HDS2202S scope purchased recently has probes similar to
    these. https://www.ebay.ca/itm/364694404614

    That's a clone of a Tektronix P6100 scope probe.

    How is the hook tip removed to expose the point? Hooks on other
    probes I've used, pull off. I've tugged on this a little but don't
    want to break it. Unscrew it? Pull harder?

    They're slide on:
    <https://m.media-amazon.com/images/I/317PyNLzqcL._AC_.jpg> <https://www.amazon.com/S-Fine-Oscilloscope-Probe-P6100-Oscilloscopes/dp/B0C49MVLLN>
    <https://www.amazon.com/P6100-DC-100MHz-Oscilloscope-100MHz-Tektronix/dp/B0CNS3NMX9>
    Look through the photos for tip options.

    For sake of interest the OWON HD3 series is a grey color and appears
    to be marketed in EU. Other than color, how do they differ from the
    blue HDS2 series marketed to North America?

    I don't know.

    Thx, ... Peter E.
    --
    Jeff Liebermann jeffl@cruzio.com
    PO Box 272 http://www.LearnByDestroying.com
    Ben Lomond CA 95005-0272
    Skype: JeffLiebermann AE6KS 831-336-2558
    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From peter@peter@easthope.ca to sci.electronics.repair on Mon Aug 11 04:35:21 2025
    From Newsgroup: sci.electronics.repair

    In article <cnni9k5hqiok7989sqr64q6fbe1vn91bd3@4ax.com>, Jeff Liebermann <jeffl@cruzio.com> wrote:
    That's a clone of a Tektronix P6100 scope probe.

    They're slide on:
    <https://m.media-amazon.com/images/I/317PyNLzqcL._AC_.jpg> <https://www.amazon.com/S-Fine-Oscilloscope-Probe-P6100-Oscilloscopes/dp/B0C49MVLLN>
    <https://www.amazon.com/P6100-DC-100MHz-Oscilloscope-100MHz-Tektronix/dp/B0CNS3NMX9>
    Look through the photos for tip options.

    Thanks. The photos match very closely the illustrations in the OWON
    leaflet with these probes.

    Yes, the hook attachment slides over the pointed probe. In the
    illustrations I don't see a detent to hold the attachment in place.
    What prevents it from falling off?

    Thx, ... P.



    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Jeff Liebermann@jeffl@cruzio.com to sci.electronics.repair on Mon Aug 11 15:04:33 2025
    From Newsgroup: sci.electronics.repair

    On 11 Aug 2025 04:35:21 -0700, peter@easthope.ca wrote:

    In article <cnni9k5hqiok7989sqr64q6fbe1vn91bd3@4ax.com>, Jeff Liebermann <jeffl@cruzio.com> wrote:
    That's a clone of a Tektronix P6100 scope probe.

    They're slide on:
    <https://m.media-amazon.com/images/I/317PyNLzqcL._AC_.jpg>
    <https://www.amazon.com/S-Fine-Oscilloscope-Probe-P6100-Oscilloscopes/dp/B0C49MVLLN>
    <https://www.amazon.com/P6100-DC-100MHz-Oscilloscope-100MHz-Tektronix/dp/B0CNS3NMX9>
    Look through the photos for tip options.

    Thanks. The photos match very closely the illustrations in the OWON
    leaflet with these probes.

    Yes, the hook attachment slides over the pointed probe. In the
    illustrations I don't see a detent to hold the attachment in place.
    What prevents it from falling off?

    There is no detent. Pull off (remove) the plastic probe cover and
    tip. Look inside the plastic probe cover. You should see a cross cut
    metal receptacle where the probe handle tip fits. The cross cut
    receptacle is slightly undersized so that inserting the tip into the
    cross cut will hold it in place by compression.

    This might help:
    <https://www.eevblog.com/forum/testgear/cheap-p6100-teardown/>
    --
    Jeff Liebermann jeffl@cruzio.com
    PO Box 272 http://www.LearnByDestroying.com
    Ben Lomond CA 95005-0272
    Skype: JeffLiebermann AE6KS 831-336-2558
    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From peter@peter@easthope.ca to sci.electronics.repair on Sun Aug 17 21:15:20 2025
    From Newsgroup: sci.electronics.repair

    In article <mhpk9k1mj434uahl6ddk68r8dsihnhhisl@4ax.com>, Jeff Liebermann <jeffl@cruzio.com> wrote:
    Pull off (remove) the plastic probe cover and tip.

    Yes, with much more force than I expected, it came off.

    This might help: <https://www.eevblog.com/forum/testgear/cheap-p6100-teardown/>

    Interesting, thanks, ... P.

    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Jeff Liebermann@jeffl@cruzio.com to sci.electronics.repair on Mon Aug 18 16:53:32 2025
    From Newsgroup: sci.electronics.repair

    On 17 Aug 2025 21:15:20 -0700, peter@easthope.ca wrote:

    In article <mhpk9k1mj434uahl6ddk68r8dsihnhhisl@4ax.com>, Jeff Liebermann <jeffl@cruzio.com> wrote:
    Pull off (remove) the plastic probe cover and tip.

    Yes, with much more force than I expected, it came off.

    This might help:
    <https://www.eevblog.com/forum/testgear/cheap-p6100-teardown/>

    Interesting, thanks, ... P.

    Some of my former co-workers had the irritating habit of using scope
    probes to stir their favorite beverages. If it contained sugar, the
    tip would be effectively glued in place. If it was lemon tear and
    sugar, the lemon would etch the metal surfaces which provided better
    adhesion for the glue. I believe that "energy drinks" were the worst
    because the pH was rather acidic. Besides wrecking scope probe tips,
    energy drinks are rot your teeth: <https://markdannerdmd.com/downloads/table-beverage-acidity.pdf>

    At the time (1972 - 1983), consumer ultrasonic cleaners were not
    commonly available. I used an ultrasonic jewelry cleaner to un-stick
    scope probe tips. I don't recall having much difficulty removing
    scope probe tips after they were cleaned to remove the sugar. <https://www.google.com/search?q=ultrasonic%20jewelry%20cleaner&udm=2>

    Hint: If you haven't broken and then repaired it, you probably don't understand how it works.
    --
    Jeff Liebermann jeffl@cruzio.com
    PO Box 272 http://www.LearnByDestroying.com
    Ben Lomond CA 95005-0272
    Skype: JeffLiebermann AE6KS 831-336-2558
    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Chris Jones@lugnut808@spam.yahoo.com to sci.electronics.repair on Tue Aug 19 23:55:04 2025
    From Newsgroup: sci.electronics.repair

    On 19/08/2025 9:53 am, Jeff Liebermann wrote:
    On 17 Aug 2025 21:15:20 -0700, peter@easthope.ca wrote:

    In article <mhpk9k1mj434uahl6ddk68r8dsihnhhisl@4ax.com>, Jeff Liebermann <jeffl@cruzio.com> wrote:
    Pull off (remove) the plastic probe cover and tip.

    Yes, with much more force than I expected, it came off.

    This might help:
    <https://www.eevblog.com/forum/testgear/cheap-p6100-teardown/>

    Interesting, thanks, ... P.

    Some of my former co-workers had the irritating habit of using scope
    probes to stir their favorite beverages. If it contained sugar, the
    tip would be effectively glued in place. If it was lemon tear and
    sugar, the lemon would etch the metal surfaces which provided better
    adhesion for the glue. I believe that "energy drinks" were the worst
    because the pH was rather acidic. Besides wrecking scope probe tips,
    energy drinks are rot your teeth: <https://markdannerdmd.com/downloads/table-beverage-acidity.pdf>

    At the time (1972 - 1983), consumer ultrasonic cleaners were not
    commonly available. I used an ultrasonic jewelry cleaner to un-stick
    scope probe tips. I don't recall having much difficulty removing
    scope probe tips after they were cleaned to remove the sugar. <https://www.google.com/search?q=ultrasonic%20jewelry%20cleaner&udm=2>

    Hint: If you haven't broken and then repaired it, you probably don't understand how it works.


    I can think of a perfect countermeasure to this crime:

    Dip each new probe into some 3M FT-32 bitter solution and allow the
    residue to dry - it's not sticky. It is basically concentrated bitrex.
    They will only do it one more time after that.

    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Jeff Liebermann@jeffl@cruzio.com to sci.electronics.repair on Tue Aug 19 09:55:34 2025
    From Newsgroup: sci.electronics.repair

    On Tue, 19 Aug 2025 23:55:04 +1000, Chris Jones
    <lugnut808@spam.yahoo.com> wrote:

    On 19/08/2025 9:53 am, Jeff Liebermann wrote:
    On 17 Aug 2025 21:15:20 -0700, peter@easthope.ca wrote:

    In article <mhpk9k1mj434uahl6ddk68r8dsihnhhisl@4ax.com>, Jeff Liebermann <jeffl@cruzio.com> wrote:
    Pull off (remove) the plastic probe cover and tip.

    Yes, with much more force than I expected, it came off.

    This might help:
    <https://www.eevblog.com/forum/testgear/cheap-p6100-teardown/>

    Interesting, thanks, ... P.

    Some of my former co-workers had the irritating habit of using scope
    probes to stir their favorite beverages. If it contained sugar, the
    tip would be effectively glued in place. If it was lemon tear and
    sugar, the lemon would etch the metal surfaces which provided better
    adhesion for the glue. I believe that "energy drinks" were the worst
    because the pH was rather acidic. Besides wrecking scope probe tips,
    energy drinks are rot your teeth:
    <https://markdannerdmd.com/downloads/table-beverage-acidity.pdf>

    At the time (1972 - 1983), consumer ultrasonic cleaners were not
    commonly available. I used an ultrasonic jewelry cleaner to un-stick
    scope probe tips. I don't recall having much difficulty removing
    scope probe tips after they were cleaned to remove the sugar.
    <https://www.google.com/search?q=ultrasonic%20jewelry%20cleaner&udm=2>

    Hint: If you haven't broken and then repaired it, you probably don't
    understand how it works.


    I can think of a perfect countermeasure to this crime:

    Dip each new probe into some 3M FT-32 bitter solution and allow the
    residue to dry - it's not sticky. It is basically concentrated bitrex.
    They will only do it one more time after that.

    <https://www.3m.com/3M/en_US/p/d/b5005266000/> <https://www.uline.com/Product/Detail/S-21399/Reusable-Respirators/3M-Replacement-FT-32-Fit-Test-Solution>
    <https://www.uline.com/Product/Detail/S-20379/Dust-Masks-and-Respirators/3M-FT-30-Fit-Test-Bitter>
    <https://en.wikipedia.org/wiki/Denatonium>

    Interesting idea, but rather expensive. I'm also not thrilled with
    the possibility of being accused of poisoning someone elses coffee and permanently contaminating their coffee cup. I've had some limited
    experience with Bitrex (don't ask). It transfers easily to the
    fingers and then to the mouth. It can be neutralized with hydrogen
    peroxide, but not completely. The typical dilution ratio is something
    like 1:30,000. Painting the scope probe with Bitrex is likely to
    render the scope probe and coffee cup unusable. The scope probe
    vendor is unlikely to replace it under warranty.
    --
    Jeff Liebermann jeffl@cruzio.com
    PO Box 272 http://www.LearnByDestroying.com
    Ben Lomond CA 95005-0272
    Skype: JeffLiebermann AE6KS 831-336-2558
    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From liz@liz@poppyrecords.invalid.invalid (Liz Tuddenham) to sci.electronics.repair on Wed Aug 20 08:59:59 2025
    From Newsgroup: sci.electronics.repair

    Jeff Liebermann <jeffl@cruzio.com> wrote:

    On Tue, 19 Aug 2025 23:55:04 +1000, Chris Jones
    <lugnut808@spam.yahoo.com> wrote:

    On 19/08/2025 9:53 am, Jeff Liebermann wrote:
    On 17 Aug 2025 21:15:20 -0700, peter@easthope.ca wrote:

    In article <mhpk9k1mj434uahl6ddk68r8dsihnhhisl@4ax.com>, Jeff >>>Liebermann <jeffl@cruzio.com> wrote: > Pull off (remove) the plastic >>>probe cover and tip.

    Yes, with much more force than I expected, it came off.

    This might help:
    <https://www.eevblog.com/forum/testgear/cheap-p6100-teardown/>

    Interesting, thanks, ... P.

    Some of my former co-workers had the irritating habit of using scope
    probes to stir their favorite beverages. If it contained sugar, the
    tip would be effectively glued in place. If it was lemon tear and
    sugar, the lemon would etch the metal surfaces which provided better
    adhesion for the glue. I believe that "energy drinks" were the worst
    because the pH was rather acidic. Besides wrecking scope probe tips,
    energy drinks are rot your teeth:
    <https://markdannerdmd.com/downloads/table-beverage-acidity.pdf>

    At the time (1972 - 1983), consumer ultrasonic cleaners were not
    commonly available. I used an ultrasonic jewelry cleaner to un-stick
    scope probe tips. I don't recall having much difficulty removing
    scope probe tips after they were cleaned to remove the sugar.
    <https://www.google.com/search?q=ultrasonic%20jewelry%20cleaner&udm=2>

    Hint: If you haven't broken and then repaired it, you probably don't
    understand how it works.


    I can think of a perfect countermeasure to this crime:

    Dip each new probe into some 3M FT-32 bitter solution and allow the >residue to dry - it's not sticky. It is basically concentrated bitrex.
    They will only do it one more time after that.

    <https://www.3m.com/3M/en_US/p/d/b5005266000/> <https://www.uline.com/Product/Detail/S-21399/Reusable-Respirators/3M-Repl <https://acement-FT-32-Fit-Test-Solution> <https://www.uline.com/Product/Detail/S-20379/Dust-Masks-and-Respirators/3 <https://M-FT-30-Fit-Test-Bitter> en.wikipedia.org/wiki/Denatonium>

    Interesting idea, but rather expensive. I'm also not thrilled with
    the possibility of being accused of poisoning someone elses coffee and permanently contaminating their coffee cup. I've had some limited
    experience with Bitrex (don't ask). It transfers easily to the
    fingers and then to the mouth. It can be neutralized with hydrogen
    peroxide, but not completely. The typical dilution ratio is something
    like 1:30,000. Painting the scope probe with Bitrex is likely to
    render the scope probe and coffee cup unusable. The scope probe
    vendor is unlikely to replace it under warranty.

    Perhaps something a bit less noxious, such as a strong spice, could be
    used. Food dye would make the coffee look unpalatable without causing
    any harm.

    I used to work in a biological research establishments and the practical
    jokes there would have got you sacked in any ordinary lab; you learned
    to be very wary of 'delicacies' handed around at coffee time.
    --
    ~ Liz Tuddenham ~
    (Remove the ".invalid"s and add ".co.uk" to reply)
    www.poppyrecords.co.uk
    --- Synchronet 3.21a-Linux NewsLink 1.2

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