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.

What exactly are you measuring? If you are measuring in the X1 mode from the tip to the center conductor of the BNC 390 ohms might be right. My elcheapo probe measures 250 ohms. Are you really measuring from tip to shield? What is the symptom? Mikek

P6563A Tek probe repair?

Jul 22, 2014 21 Replies

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amdx 11 years ago

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

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Michael A. Terrell 11 years ago

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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