MSO7104A用户卡问题

几个月前我买了一台二手MSO7104A。
它最后一次校准是在2009年，我注意到较低的伏/格设置有一些偏移问题，所以我决定运行一个用户cal。
我按照手册中的指示，使用三个BNC三通将BNC电缆从触发输出连接器连接到前面板。
但是，当我运行用户cal时，它在运行不到30秒后失败，其中“Failure：Digitizer，failed，init for talon cal，setup chan1”。
范围似乎工作正常，它通过自检。
我尝试了几种不同的布线方式，结果相同。
有谁知道这个错误意味着什么，有没有办法完成校准或回滚校准数据？



     以下为原文

  I bought a used MSO7104A a few months ago.  It was last calibrated in 2009 and I have noticed some offset issues on the lower volts/div settings, so I decided to run a user cal.  I connected the BNC cables from the trigger out connector to the front panel with three BNC tees as directed in the manual.  However, when I run the user cal, it fails after running for less than 30 seconds with "Failure: Digitizer, failed, init for talon cal, setup chan1".  The scope seems to work fine and it passes the self test.  I have tried several different cabling arrangements with the same result.  Does anyone know what this error means and if there is any way to either complete the calibration or roll back the calibration data?