34907A模拟输出电压偏移约为10 mV

您好，我们正在使用带有多功能模块34907A的Agilent 34972A，我们希望通过DAC输出通道控制电源。
问题是，输出通道的电压偏移约为10 mV。
因此，即使我们设置0 V的输出电压，我也可以用万用表测量10 mV的输出电压。
这是因为我们希望产生一个非常缓慢上升的电压斜坡，电源只接受0 ... 5 V的电压。我甚至不确定这个偏移是否恒定，因为在启动安捷伦之后
34972A我测得的偏差接近20 mV。
那么这是一个准确性的问题，还是可以在某处补偿这种偏移？
我已经尝试过恢复出厂设置，但是在输出通道04和05上仍然存在偏移。感谢您的问候。



     以下为原文

  Hello,

we are using an Agilent 34972A with the Multifunction Module 34907A and we want to control a Power Supply with the DAC output channel. The problem is, that the output channel has a voltage offset of about 10 mV. So even if we set an output voltage of 0 V, I can measure an output voltage of 10 mV with a multimeter.
That is way to much because we want to generate a voltage ramp which rises very slowly and the Power Supply only accepts voltages from 0...5 V.
I'm not even sure that this offset is constant, because right after starting the Agilent 34972A I measure an offset of almost 20 mV.

So is this a question of accuracy or can I compensate this offset somewhere? I already tried a factory reset, but the offset still exists on both output channels 04 and 05.

Thanks an best regards.