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2. Noise-figure meter - Wikipedia

   en.wikipedia.org/wiki/Noise-figure_meter

   A noise-figure meter is an instrument for measuring the noise figure of an amplifier, mixer, or similar device. An example instrument is the 1983-era Agilent 8970A. The 8970A Noise Figure Meter is a Keysight product numbers that were formerly part of Agilent.

3. Microwave power meter - Wikipedia

   en.wikipedia.org/wiki/Microwave_power_meter

   A microwave power meter is an instrument which measures the electrical power at microwave frequencies typically in the range 100 MHz to 40 GHz. Usually a microwave power meter will consist of a measuring head which contains the actual power sensing element, connected via a cable to the meter proper, which displays the power reading.

4. Optical power meter - Wikipedia

   en.wikipedia.org/wiki/Optical_power_meter

   An optical power meter (OPM) is a device used to measure the power in an optical signal. The term usually refers to a device for testing average power in fiber optic systems. Other general purpose light power measuring devices are usually called radiometers , photometers , laser power meters (can be photodiode sensors or thermopile laser ...

5. Power meter - Wikipedia

   en.wikipedia.org/wiki/Power_meter

   Wattmeter measures the electrical power circulating in any electric circuit; Microwave power meter measures power in a microwave signal; Optical power meter measures power in an optical signal; Google PowerMeter is a tool to track a household's energy usage; A cycling power meter measures the power output of a bicycle rider; Health meter, a ...

6. RF switch - Wikipedia

   en.wikipedia.org/wiki/RF_switch

   An RF switch or microwave switch is a device to route high frequency signals through transmission paths. RF ( radio frequency ) and microwave switches are used extensively in microwave test systems for signal routing between instruments and devices under test (DUT).

7. Frequency meter - Wikipedia

   en.wikipedia.org/wiki/Frequency_meter

   One of the most basic forms of frequency meter is the vibrating reed meter or tuned reed meter. This consists of an electromagnet coil carrying the signal positioned near the end of a tuned metal reed or tuning fork-type arrangement. As the signal travels through the coil it creates a magnetic field with the sample frequency, which pushes and ...