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cal ram checksum error (HP 54501A)

Question asked by zolauri on Apr 1, 2007
Latest reply on Apr 8, 2007 by zolauri
I have a HP 54501A Digitizing scope.

After every single startup I get an error message  "cal ram checksum error, re-cal instrument"

After re-calibration the scope works good.

If I ignore the error message and run the SELF TEST with TEST ALL option the following three lines returns with FAILED message

1.Protected Non-Volatile RAM
2.D/A converter
3.A/D converter

The question is: Is it an easy to handle tipical failure (broken backup battery or something like this) or it signs a more serious problem?

thanks in advance
z.lauri  

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