[问答]

33500系列不能应用于任意波形

问答对人有帮助，内容完整，我也想知道答案 0 33500A和B系列的当前数据表明确指出频率（或采样率）扫描不能应用于任意波形。但是33500A系列（最近停产的）服务/用户手册指出任意波形都可以进行频率扫描。数据手册还列出了如果任意波形无法扫描或频率调制的建立时间，那么TrueForm技术的一些优势就不会丢失，因为采样率可能只是固定的250MS /秒，用户可以为不同的频率加载不同的任意波形。我试图将33500系列与更便宜的简单DDS系统以及更昂贵的可变时钟系统进行比较。不能扫描或调制频率似乎是一个缺点。安捷伦的某些人是否可以确认这种情况，并解释在任意时变波形的情况下解决时间的含义。以上来自于谷歌翻译以下为原文 The current data sheets for the 33500A and B series clearly states that frequency (or sample rate) sweeps cannot be applied to arbitrary waveforms. But the 33500A series (recently discontinued) service/user manual states that arbitrary waveforms can be frequency swept. The data sheet also lists a settling time of <200 nsecs for arbitrary waveforms. Settling time for a step say make sense but I don't understand what this means in terms of an arbitrary and constantly changing waveform. If arbitrary waveforms can't be swept or frequency modulated, then doesn't some of the advantages of TrueForm technology become lost in the sense that the sample rate could just be a fixed 250MS/sec and the user could load different arbitrary waveforms for different frequencies. I'm trying to compare the 33500 series with cheaper simple DDS systems and also more expensive variable clock systems. Not being able to sweep or modulate the frequency seems to be a bit of a drawback. Can someone from Agilent confirm that this is the case and also explain what is meant by settling time in the context of an arbitrary time varying waveform. 0
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答案对人有帮助，有参考价值 0 数据表错了。是的，您可以在33500A和33500B中扫描和调制任意波形。（假设您在B中有arb选项）您能否为页码提供这些不正确的信息？我会确保它得到修复。我将研究200 ns的特性并回复你。以上来自于谷歌翻译以下为原文 The datasheet is wrong. Yes, you can sweep and modulate arbitrary waveforms, in both the 33500A and 33500B. (Assuming you have the arb option in the B) Can you provide the page numbers with this incorrect information? I will make sure it gets fixed. I'll look into the 200 ns characteristic and get back to you.

2019-2-15 15:18:39 评论举报杨梅

答案对人有帮助，有参考价值 0 谢谢你的问题的答案。因此，建立时间是衡量在没有使用过滤器阻尼的情况下，步骤上的振铃/过冲等持续多长时间？令我感到困惑的是，无滤波器的情况下带宽为40MHz，而普通滤波器的带宽为0.27 x采样率，最高250MS / s达到67.5MHz，大于无滤波器带宽，但我猜任何超调都将高于此频率。以上来自于谷歌翻译以下为原文 Thanks for the answers to my questions. So the settling time is a measure of how long ringing/overshoot etc on steps will last if not damped by the use of the filter? What still slightly puzzles me is that the no-filter case has a bandwidth of 40MHz whilst the normal filter is 0.27 x Sampling rate which at the maximum 250MS/s comes to 67.5MHz which is greater than the no-filter bandwidth, but I guess any overshoot will be at frequencies much above this.

2019-2-15 16:18:10 评论举报李桂花