Need Info/help with a Heathkit Oscilloscope model io 4540

[Ren,]

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.

 

[DaveM]

"Ren," <arclight1214@gmail.com> wrote in message
news:1189341765.210149.81760@g4g2000hsf.googlegroups.com...

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

 

[Ren,]

On Sep 9, 9:25 am, "DaveM" <masondg4...@comcast99.net> wrote:

"Ren," <arclight1...@gmail.com> wrote in message

news:1189341765.210149.81760@g4g2000hsf.googlegroups.com...

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 fromhttp://www.d8apro.com/heath2.htm
orhttp://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

Thanx for those websites Dave.

Now all I need to do is track down some probes.

 

[Fred McKenzie]

In article <1189341765.210149.81760@g4g2000hsf.googlegroups.com>,
"Ren," <arclight1214@gmail.com> wrote:

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