The terms “bit error rate” and “bit error ratio” are used interchangeably on many websites and publications. However, the definitions are very different. Understanding the difference will help you effectively analyze your system’s performance. What is a BERT? To find the bit error rate or bit error ratio of your system, you need a Bit Error Rate… Show more
使用ADS软件的自定义函数，在数据显示窗口中的smith 圆图中，以指定阻抗点为参考，绘制等VSWR圆。如下图所示，使用vswr_circle函数，以Z_val1（归一化）阻抗为中心，绘制等VSWR圆： Vswr_circle () 函数说明： 语法： y = vswr_circle(zCenter, numOfPts, numCircles, stepSize,desired_vswr) zCenter： 归一化阻抗，可以是一维扫描量； numOfPts： 构成vswr圆的点数，缺省值为51； numCircles： 绘制vswr圆的数目，缺省值为3； stepSize: … Show more
Most of the soft keys on my HP 54600A do not work. Here's the details: I noticed that the display was triggering on Ch 2 and wanted to change to Ch 1. I pressed the trigger source key to bring up the source menu which shows Ch 2. Pressing any of the four keys does not make a change. I then tried the trigger mode button and the mode menu came… Show more
I have a 54645D scope that appears to have a dead power supply board (plug unit in, turn it on and nothing happens, the fan does not spin, and nothing appears on the screen). I don't know the history of the unit and I don't know when it stopped working and what happened to cause it to stop. The part number for the power supply is 0950-2735. I… Show more
What is the 34939T interface wiring that is not shown on the pin out to allow a
If I'm using a calibrated 34970A and a calibrated 34901A, do I need to use calibrated thermocouples?
It is difficult for electrical and computer engineering (ECE) students to master the field’s many technical terms, abbreviations, and acronyms. While topics like resistance, capacitance, voltage, current, and power are typically covered in high school physics, freshman engineering students quickly find themselves studying mysterious concepts like… Show more