问题：
I am getting the diagnostic error code E1A11 on my CSA803 or 11800-series oscilloscope. What does this mean?
答案：
This diagnostic error code indicates a problem with U500, the Numeric Processor Extension. The value returned of a pre-determined equation was not within +0.005 of the expected value.
Due to the age of these products, replacement parts are no longer available. Repairs on these products are available from Tektronix Service on a best effort basis.
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常见问题 ID 52791
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