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嗨,我希望有人能帮我理解aperature / autozero如何影响记录的值。
我想使用34461A来测量平均1s周期内的平均电流消耗。 被测设备(DUT)将非常灵活(例如,1uA通常会为几个我们提供10mA电流)。 我很高兴设置/钳制DMM上的当前范围(无自动量程问题)Q1。 我是否正确地认为Aperature将提供当前的真实平均值/积分? Q2。 在自动归零期间我是否会丢失测量值? 例如 假设aperature设置为1s且自动调零。 100秒后,我将有100个读数。 这些读数的总和/ 100 = 100s期间的真实平均值? 或者,当DMM进行自动调零时,DUT的某些电流尖峰是否会丢失? 以上来自于谷歌翻译 以下为原文 Hi, I'm hoping someone can help me understand how aperature/autozero affects the recorded values. I would like to use a 34461A to measure average current consumption averaged over periods of 1s. The device under test (DUT) is going to be quite spikey (say 1uA typically bursting to a 10mA for few us). I'm happy to set/clamp the current range on the DMM (no auto range issues) Q1. Am I correct in thinking that the Aperature will provide a true average / integration of the current? Q2. Do I loose measuements during autozero? e.g. say the aperature is set to 1s with auto zero on. After 100s, I will have 100 readings. Does the sum of these readings / 100 = true average for the 100s period? Or is it possible that some current spikes from the DUT will have been lost while the DMM was doing an auto zero? |
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刚刚通过电话与Keysight USA的应用工程师交谈。
在这里发布回复,以防其他人有帮助。 Q1:是德科技:“是的,这是正确的。每个结果都是电流窗口上电流的真正积分。” 我:很好,这就是我的想法。 问题2. Q2:是德科技:“在自动调零周期内没有读数丢失。” 我:我还是不确定。 但是真的不想在国际电话上闲逛和讨论。 无论如何,我对Q1更感兴趣。 要使用Autozero-Once确定一次。 以上来自于谷歌翻译 以下为原文 Just spoke to an apps engineer at Keysight USA by phone. Posted the response here in case it is helpful to someone else. Q1: Keysight: "Yes this is correct. Each result is a true integral of current over the aperature window.". Me: Great, it's what I thought. On to Question 2. Q2: Keysight: "No readings are 'lost' during the auto zero cycle." Me: I'm still not sure about this. But didn't really want to hang around and discuss on an international call. I was more interested in Q1 anyway. Going to use Autozero-Once to be sure. |
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