"The 42AD is a wattmeter from Boonton. A Wattmeter is an instrument for measuring the electric power (or the supply rate of electrical energy) in watts of any given circuit. Electromagnetic wattmeters are used for measurement of utility frequency and audio frequency power; other types are required for radio frequency measurements.","Additional Features:","The Boonton 42AD Microwattmeter has a 3.5 inch digital readout plus vertical edgemeter."

特性

• Power range: 1 nW to 10 mW (-60 to + 10 dBm.)
• 7 full scale ranges
• Frequency range: 200 MHz to 12.4 GHz
• Zero stability