说明一下860DSP是一个信号测量仪器的型号 Here is a good explanation of how the 860 in spectrum mode uses the different settings like dwell wide, narrow, and averaging to look at the spectrum data differently. 860 DSPI Spectrum Analyzer Set... 说明一下860DSP是一个信号测量仪器的型号
Here is a good explanation of how the 860 in spectrum mode uses the different settings like dwell wide, narrow, and averaging to look at the spectrum data differently. 860 DSPI Spectrum Analyzer Settings Explanation In the 860 DSPI there are 3 different and unique spectrum analyzer “Detectors”. These detectors may alter the view of a signals appearance, depending on which is selected. Each detector can show a different picture on the same signal because of the way the detector functions. An important selection to our spectrum analyzer is the amount of digital snap shots to be taken. This will be the amount of digital snapshots that is taken in the allocated bandwidth before showing a picture. With this said, the more sampling that is put into the spectrum analyzer the slower it will seem to update, but more opportunity to capture ingress and other interference that can happen inside a cable plant. Dwell Wide- Dwell Wide takes the largest snapshot out of the amount taken, then the 7.5 MHz spectrum is peak held as the 860 DSPI tunes across the selected frequencies in 250 kHz steps. Example: In Dwell Wide, with a 32 sampling rate set, this in turn means the 860 will dwell or sit on a portion of the spectrum defined above, take 32 snap shots, and then display the picture with the max amplitude before moving on to the next portion of bandwidth. Dwell Narrow- Dwell Narrow takes the largest snapshot out of the amount taken, then a 250 kHz spectrum slice is peak held as the 860 DSPI tunes across the selected frequencies in 250 kHz steps. The difference between Dwell Narrow and Dwell Wide is that Dwell Narrow only peak holds across a 250 kHz slice, where as Dwell wide peak holds the entire 7.5 MHz. Example: In Dwell Narrow, with a 32 sampling rate set, this in turn means the 860 will go to the first 7.5 MHz of the spectrum it will look at a 250 kHz slice of the 7.5 MHz and take its 32 samples. These 32 samples will be done in a peak hold fashion, then display the sample that contains the largest signal. Averaging: This detector when selected looks at a 7.5 MHz portion of the spectrum. When it tunes to the first 7.5 MHz portion of the spectrum, it takes into account how much sampling is selected, then takes it’s digital snapshots on the entire 7.5 MHz, averages those pictures together, then shows the final averaged picture. This detector is used for looking at large amounts of bandwidth. Example: In Averaging, with a 32 sampling rate set, this in turn means the 860 will go to the first 7.5 MHz of the spectrum, take it’s 32 digital snap shots, average those together, and show the average of the 32 snapshots.
这是一个很好的解释860的光谱中使用不同的模式设定诸如住宽的、窄的、和平均看谱数据不同。860 DSPI频谱分析仪在860 DSPI设置的解释有三个不同的和独特的频谱分析仪”探测器”。这些检测器信号的角度改变外观这取决于被选择。每种探测器能展现出不同的照片是相同的信号检测的功能。一个重要的选择我们的频谱分析仪是这个数字的数字突然投捉住。这将是数量的数码照片在那被分配的带宽之前显示一幅画。与这妇人说,更抽样投入频谱分析仪慢它似乎更新,但是更多的机会去占领的入口和其他的干扰,那可能会发生在电缆的植物。住宽——住宽以Z大金额的快照,然后采取7.5赫兹光谱举行高峰的DSPI曲子在选择派高达250赫兹的频率步骤。例如,在住宽32采样率,这又意味着860要住或坐在部分谱定义以上,以32拍球,然后凭借图片和马克斯振幅之后才进行下一个部分的带宽。住窄-住狭窄的以Z大的快照,然后采取金额高达250赫兹光谱的切片”是峰举行DSPI曲子在选择派高达250赫兹的频率步骤。住狭窄的区别住宽峰住狭窄的只有在拥有高达250赫兹片,而住宽峰拥有整个7.5赫兹。例如,在住窄,32采样率,这又意味着860就去diyi7.5赫兹的光谱它看一个高达250赫兹7.5赫兹层,以32样品。这些32样品要做在山顶举行时尚,然后凭借样本含有Z大的信号。被选中的时候,平均每场:本检测器看7.5赫兹部分的光谱。当它曲子diyi次7.5赫兹部分的光谱,它考虑到多少抽样被选中后,把它的数字快照,对整个7.5赫兹,平均值那些照片在一起,然后显示Z后平均图片。本检测器用于看大量的带宽。例如,在平均有32采样率,这又意味着860要去第750兆赫的光谱中,把它32数字拍球,平均那些在一起,并表现出的平均32快照。