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Need Info/help with a Heathkit Oscilloscope model io 4540

R

Ren,

Jan 1, 1970
0
Salutations,

I hope someone here on this message board will be able to help me
out. This weekend I picked up a Heathkit oscilloscope (model io 4540)
at a local flea market for $10. I got it home and powered it and it
seems to be operating and functioning properly. My problem is that it
did not come with any probes or a manual.

My questions about this scope are:

Is there a specific type of probes that are used with this
Oscilloscope, or are they universal?
Where can I purchase a set of probes for this Oscilloscope?
Does anyone know of a place where i can obtain a manual for it?

Thank you in advance to anyone that can help me ouy.

Ren.
 
D

DaveM

Jan 1, 1970
0
Ren said:
Salutations,

I hope someone here on this message board will be able to help me
out. This weekend I picked up a Heathkit oscilloscope (model io 4540)
at a local flea market for $10. I got it home and powered it and it
seems to be operating and functioning properly. My problem is that it
did not come with any probes or a manual.

My questions about this scope are:

Is there a specific type of probes that are used with this
Oscilloscope, or are they universal?
Where can I purchase a set of probes for this Oscilloscope?
Does anyone know of a place where i can obtain a manual for it?

Thank you in advance to anyone that can help me ouy.

Ren.
..

You can buy copies of the manual from
http://www.d8apro.com/heath2.htm
or
http://www.sarrio.com/sarrio/heathkit.html

--
Dave M
MasonDG44 at comcast dot net (Just substitute the appropriate characters in the
address)

"In theory, there isn't any difference between theory and practice. In
practice, there is." - Yogi Berra
 
F

Fred McKenzie

Jan 1, 1970
0
Ren said:
Is there a specific type of probes that are used with this
Oscilloscope, or are they universal?

Ren-

As I understand it, there are two main types: direct and low
capacitance. (You might also want an RF detector probe.)

The low capacitance probe has a voltage divider with a variable
capacitor so you can adjust the division ratio at higher frequencies.
Some scopes supply a square calibration waveform for use in adjusting
the probe, so the waveform is flat with no peaks or rounded corners.

Such a low capacitance probe must approximately match the input
resistance and capacitance of your oscilloscope. Typically you will
multiply a reading by a factor such as ten, to find the actual voltage.

If you come across such probes at a Hamfest, there is a good chance they
will work.

Fred
 
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