As early as 1977, HP began production of the HP856x spectrum analyzers to complement its RF ability meters and sensors able to measuring signals in excessive of 20 GHz. HP also produced configurable chassis dependent sweep generators capable of producing signals to 20 GHz. Other T&M products of the time https://mrhp.ir/%da%a9%d8%a7%d8%b1%d8%aa-%d8%b4%d8%a8%da%a9%d9%87-hpe-marvell-ql41134hlcu-ethernet-10gb-4-port-sfp/