Hp6030A超范围错误

你好，我有一个电源HP6030与GPIB板的问题。设备上电，没有任何错误代码。我可以设置它应该给出的想要的输出电流，但当我开始立即移动慢跑时
我检查了所有电源部分，看起来没问题。我已经检查了A2控制板上连接器A2J7的所有信号，一切似乎都没问题。如果我已经很好理解了
仪器的功能，超范围（自动量程）限制是由uProcessor使用Vmon和Imon信号计算的。我认为2个信号相乘，结果用参考值验证，这意味着最大输出功率可能。所以如果我测量
电源后部或A2板上的Imon和Vmon完全是零。所以我认为上位处理器可能接收到数字化Imon和Vmon的错误值。这些信号通过多路复用器然后进入A /
D转换器。我怎么能检查t
他的部分电路？或者有人有同样的问题并解决了吗？先谢谢你的帮助



     以下为原文

  Hello,

i've a problem with a power supply HP6030 with GPIB board.

The device power up and there isn't any error code.I can setup the wanted amount
output current that it should give,but when i start to move the jog immediatly
the led overrange ligth up and the voltage remian @ 0 volt.
I checked all the power section and seem to be ok.I've checked all the signal in
the connector A2J7 on A2 control board and all seem to be ok.

If i have well understood the functioning of the instrument, the
overrange(autorange) limit is calculated by the uProcessor using the Vmon and
Imon signals.
I think that the 2 signals are multiplied and the result is verified with a
value of reference that means max output power possible.

So if i mesure the Imon and Vmon in the rear of the supply or in the A2 board
they are perfecly @ zero.

So my opinion is that probably the uprocessor receive the digitalized Imon and
Vmon with a wrong value.

These signal pass trought a multiplexer and then into a A/D converter.

How could i check this part of circuit?

Or somebody had same problem and resolved it?

Thanks in advance for any help