The model 8542B is a digital- controlled, self-calibrating power meter. It can measure RF and microwave signal power over a wide range of frequencies and levels in a variety of measurement modes. It can be operated locally from the front panel or remotely over the General Purpose Interface Bus (GPIB). The 8542B and the Series 80600 line of power sensors offer enhanced performance in the measurement of complex modulation signals in the communication industry. Features Frequency Range 10 MHz to 40 GHz Power Range: -70 to +47 dBm Linearity: ±0.02 dB Input Type: Dual