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E4440A alignment error

Question asked by lzw on Mar 17, 2008
Latest reply on Jun 29, 2010 by tnguyen
I have an E4440A box which shows following error messages: Calibration failed, ATTEN_STEPS and ATTEN_STEPS_EATTEN. (Is it a single fault affect both calibration?)
My question what needs to be replaced? IF I can not correct this error in the near future, what's the consequence for the measurement?