Connect with us

Mystery probe

Discussion in 'Electronic Repair' started by Ken_B, Dec 18, 2004.

Scroll to continue with content
  1. Ken_B

    Ken_B Guest

    I've acquired a couple of probes marked "PR 200" & "PhilipsECG" on one side
    of small box integrated with connector, 1/1-1/10 with adjustment hole on
    other side (calibration?). Three-position switch on probe marked 1 - 10 - G.
    I assume this is 1x/10x multiplier/ground selector.

    Google search no help. Can someone give me any info on these? Thanks.
     
  2. NSM

    NSM Guest

    | I've acquired a couple of probes marked "PR 200" & "PhilipsECG" on one
    side
    | of small box integrated with connector, 1/1-1/10 with adjustment hole on
    | other side (calibration?). Three-position switch on probe marked 1 - 10 -
    G.
    | I assume this is 1x/10x multiplier/ground selector.
    |
    | Google search no help. Can someone give me any info on these? Thanks.

    Resistance tip to ground on each setting?

    N
     
  3. Dbowey

    Dbowey Guest

    Ken posted:

    << I've acquired a couple of probes marked "PR 200" & "PhilipsECG" on one side
    of small box integrated with connector, 1/1-1/10 with adjustment hole on
    other side (calibration?). Three-position switch on probe marked 1 - 10 - G.
    I assume this is 1x/10x multiplier/ground selector. >>

    I agree; it sounds like scope probes. The adjustment compensates for the coax
    attenuation. When using a scope clip the probe to the "calibrate" test pin and
    observe the scope display. Rotate the variable capacitor via the adjustment
    hole to display the best squarewave.

    Don
     
  4. Ken_B

    Ken_B Guest

    Infinity on all three switch positions. Did see an apparent capacitor charge
    on 1 and 10.

    These probes have BNC connectors, by the way. I'm sure they're scope probes.
    I was hoping to find some specs.
     
  5. NSM

    NSM Guest

    | Infinity on all three switch positions. Did see an apparent capacitor
    charge
    | on 1 and 10.
    |
    | These probes have BNC connectors, by the way. I'm sure they're scope
    probes.
    | I was hoping to find some specs.

    All you can do is connect them to a scope, tweak them with the scopes'
    calibration port or a square wave generator and them measure the frequency
    response with a good RF generator.

    There are 5 million scope probes in the naked city - no way to find the
    particular specs for these.

    N
     
  6. Asimov

    Asimov Guest

    "Ken_B" bravely wrote to "All" (18 Dec 04 15:40:59)
    --- on the heady topic of "Mystery probe"

    Ke> From: "Ken_B" <@>

    Ke> I've acquired a couple of probes marked "PR 200" & "PhilipsECG" on one
    Ke> side of small box integrated with connector, 1/1-1/10 with adjustment
    Ke> hole on other side (calibration?). Three-position switch on probe
    Ke> marked 1 - 10 - G. I assume this is 1x/10x multiplier/ground selector.

    Ke> Google search no help. Can someone give me any info on these? Thanks.

    PR 200 is likely 200MHz since I know the PR 100 is 100MHz.
    It's the best I can offer...

    A*s*i*m*o*v

    .... I lurk quietly and carry a big OFF/ON switch.
     
  7. Ken_B

    Ken_B Guest

    Thanks for the replies. The note about the PR 100 was helpful.

    Ken

    "Ken_B" bravely wrote to "All" (18 Dec 04 15:40:59)
    --- on the heady topic of "Mystery probe"

    Ke> From: "Ken_B" <@>

    Ke> I've acquired a couple of probes marked "PR 200" & "PhilipsECG" on one
    Ke> side of small box integrated with connector, 1/1-1/10 with adjustment
    Ke> hole on other side (calibration?). Three-position switch on probe
    Ke> marked 1 - 10 - G. I assume this is 1x/10x multiplier/ground selector.

    Ke> Google search no help. Can someone give me any info on these? Thanks.

    PR 200 is likely 200MHz since I know the PR 100 is 100MHz.
    It's the best I can offer...

    A*s*i*m*o*v

    .... I lurk quietly and carry a big OFF/ON switch.
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-