Rental Partners - Eight Common Errors to Spectrum Analysis
应用文章
Spectrum analysis is essential for understanding the frequency domain characteristics of components, circuits, and systems, but these instruments and their measurements are not foolproof. In fact, eight common mistakes plague the accuracy and effectiveness of spectrum analyzer measurements. These errors can lead to improperly adjusting a device under test (DUT) or shipping a device to a customer that has not met its required specifications. Luckily, some simple guidelines can be followed to ensure that the spectrum analyzer (also called a signal analyzer) is used properly and is performing to expectations.
Many of the mistakes made when using a spectrum analyzer have to do with using the wrong equipment, or else using the analyzer’s controls incorrectly. The eight common errors are as follows:
1. Using the wrong detector
2. Using the wrong averaging type
3. Measuring the analyzer’s own internally generated distortion products
4. Incorrect mixer level for error vector magnitude (EVM) measurements
5. Not using single sweep when remotely controlling the analyzer
6. Not synchronizing measurements with operation complete (OPC) flag
7. Not turning the display off and using binary data types when transferring data for speed
8. Feeding too much power to the input of the spectrum analyzer