As early as 1977, HP began creation of the HP856x spectrum analyzers to enrich its RF electric power meters and sensors able to measuring indicators in surplus of 20 GHz. HP also developed configurable chassis based sweep turbines capable of making indicators to 20 GHz. Other T&M solutions of the https://borna.news/fa/news/2055964/%D8%B3%D8%B1%D9%88%D8%B1-hp-%DA%86%DB%8C%D8%B3%D8%AA-%D9%88-%DA%A9%D8%A7%D8%B1%D8%A8%D8%B1%D8%AF-%D9%87%D8%A7%DB%8C-%D8%A7%D9%86-%D8%AF%D8%B1-%D9%BE%D8%B2%D8%B4%DA%A9%DB%8C