6632B在进入电压校准点P2时显示“OUT OF RANGE”

您好，我正在使用两个（安捷伦）* 6632B *，并且最近想要执行电压校准，因为显示＆amp;
实际电压不完全匹配。
我从面板上做到了这一点，并且在第一个电源上一切顺利，但在第二个上我遇到了一个奇怪的效果：显示和实际电压之间的差值非常大，如果我在键盘输入10.000伏特
6632B只显示9.768V（！），我实际上只是输出9.688V。
所以它不仅遥远，而且甚至不显示我输入的10.000V。
我认为这与早该进行的校准有关。
执行校准时，6632B没有问题地进入CAL模式，我可以选择P1并输入该校准点的测量电压，但是当我输入P2的值并确认时，我总是得到'OUT OF RANGE'
消息和校准中止。
这有什么不对？
A2板有问题吗？
我试图重置设备，但每当我输入P2值时，错误信息就会一直存在。
不幸的是，我无法通过GPIB进行尝试。
考虑到A2板上的某些东西是有缺陷的，我可以从另一台HP / Agilent / Keysight 6632B上拆下一块板并用我的电源替换它吗？
谢谢你的帮助，马库斯



     以下为原文

  Hello,
I am using two (Agilent) *6632B* and recently wanted to perform a voltage calibration since displayed & actual voltage were not fully matching.
I did that from the panel, and all went well on the first power supply, but on the second one I'm encountering a strange effect:
The delta between displayed and actual voltage is quite large, and if I enter 10.000 Volt at the keypad the 6632B just displays 9.768V(!) and I'm actually just getting an output of 9.688V. So it's not only far off but it doesn't even display the 10.000V that I've entered. I thought that has to do with the long overdue calibration.
When performing the calibration, the 6632B goes into CAL mode without problems, I can select P1 and enter the measured voltage for this calibration point, but when I enter the value for P2 and confirm with  I'm always getting an 'OUT OF RANGE' message and the calibration aborts. What's wrong here? Is someting wrong with the A2 board? I have tried to reset the device, but the error message keeps coming whenever I'm entering the P2 value.
Unfortunately I have no possibility to try it via GPIB.
Considering something on the A2 board is defective, could I just scrap a board from another HP/Agilent/Keysight 6632B and replace it in my power supply?
Thanks for help,
Markus