As early as 1977, HP commenced creation of the HP856x spectrum analyzers to enrich its RF ability meters and sensors capable of measuring signals in surplus of twenty GHz. HP also manufactured configurable chassis based sweep turbines capable of producing signals to twenty GHz. Other T&M goods of the time https://webnowmedia.com/story2974782/%D8%B3%D8%B1%D9%88%D8%B1-hpe-%DA%86%DB%8C%D8%B3%D8%AA-an-overview