As early as 1977, HP began manufacture of the HP856x spectrum analyzers to enrich its RF electrical power meters and sensors effective at measuring signals in excess of 20 GHz. HP also produced configurable chassis centered sweep generators capable of producing alerts to twenty GHz. Other T&M items of time https://socialaffluent.com/story3060667/%D8%B3%D8%B1%D9%88%D8%B1-hpe-%DA%86%DB%8C%D8%B3%D8%AA-an-overview