P6563A Tek probe repair?

[amdx]

On 7/27/2014 5:17 PM, Michael A. Terrell wrote:

skaggs.larry@gmail.com wrote:

On Tuesday, July 22, 2014 12:15:42 PM UTC-4, ster...@gmail.com wrote:
Does anyone have schematics or suggestions for repairing a Tek P6563A scope probe? The problem is the signal line has only a 390 ohm resistance to the shield as measured with a DMM.

If you have a x1 probe and it's not connect to the scope (or any other piece of test equipment) then the resistance should be near infinity.


It is 20X, with the ID pin.

Then it must be 20 times infinity with the ID pin
Mikek


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[Michael A. Terrell]

amdx wrote:

On 7/27/2014 5:17 PM, Michael A. Terrell wrote:

skaggs.larry@gmail.com wrote:

On Tuesday, July 22, 2014 12:15:42 PM UTC-4, ster...@gmail.com wrote:
Does anyone have schematics or suggestions for repairing a Tek P6563A scope probe? The problem is the signal line has only a 390 ohm resistance to the shield as measured with a DMM.

If you have a x1 probe and it's not connect to the scope (or any other piece of test equipment) then the resistance should be near infinity.


It is 20X, with the ID pin.


Then it must be 20 times infinity with the ID pin

The ID pin changes the displayed gain. It is simply a resistor to
the shell, and the value is how the scope determines the attenuation.


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