RF Power Meter
Power meter is one of the widely used pieces of test equipment in the microwave laboratory.
It can be used to characterize all manner of nonlinear circuit power transfer characteristics,
such as amplifiers, mixers, limiters, etc. You can also measure insertion loss (or gain)
and return loss of microwave networks, similar to using a scalar analyzer, but at
a fraction of the equipment cost.
Power meters today are almost always digital. They convert an analog signal, referenced to fifty ohms, to a four digit display of power in watts, milliwatts or microwatts, or in decibel milliwatts (dBm).