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当我通过频率为5 Hz至1.0 MHz的600欧姆馈通测量连接到3458A的600欧姆音频源输出时,DVM读数开始以130kHz和1.0MHz滚降,DVM显示器> -6%。
当我将Fluke 5700A宽带输出连接到DVM时,5 Hz到1.0 MHz的偏差为 以上来自于谷歌翻译 以下为原文 When I measured a 600 ohm audio source output connected to the 3458A through a 600 ohm feed-through at frequencies 5 Hz to 1.0 MHz, the DVM reading started to rolloff at 130kHz and at 1.0MHz the DVM display was >-6%. When I connected the Fluke 5700A wideband output to the DVM, the deviation over the 5 Hz to 1.0 MHz was <1.0%. When I connected the terminated 600 ohm audio source to a HP 400F, the analog meter deviated <1% over the 5 Hz to 1.0 MHz. What's happening with the 3458A? Is this a software issue? |
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我只是试图验证HP 204C的正弦波输出电平是否在600欧姆终端(20Hz到1.2MHz)内达到最小2.5Vrms。
HP 400F表明输出电压> 2.5V。 使用Ballantine Labs型号1395A-3 M600,3V / 600ohm热转换器验证平坦度是否在1kHz参考值的1%范围内。 我还尝试使用3458A测量HP652A端接600欧姆输出,并得到了同样糟糕的结果。 谢谢 以上来自于谷歌翻译 以下为原文 I was just trying to verify that the sinewave output level for an HP 204C met the minimum 2.5Vrms across a 600ohm termination, from 20Hz to 1.2MHz. The HP 400F indicated that the output was >2.5V. Used a Ballantine Labs model 1395A-3 M600, 3V/600ohm thermal converter to verify that the flatness was within 1% of 1kHz reference. I also tried to measure the HP652A terminated 600ohm output with the 3458A and got the same bad results. Thank You |
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