Multipower, ±5% Reading Accuracy
The Model 4412A uses the basic principles and “look and feel” of
the Model 43 but transforms it into a highly accurate high dynamic range instrument.
The mirroredscale linear range meter has 2 switchable ranges, 01 and 03. Power is read
as a multiple of the value indicated by the pointer, the decimal point l
ocation depending upon the range switch position and the factor printed on the plugin
element. Power ranges covered by individual elements are 2 mW to 10 W, 20 mW to
100 W, 200 mW to 1 KW and 2 W to 10 KW, full scale. For most elements, accuracy
is +/5% anywhere above 20% of full scale. The circuitry operates from a rechargeable battery.
Temperaturecompensated accurate CW and FM power measurements from 200 kHz to
2.3 GHz and 2 mW to 10 KW
· Uses special 4410-series wide-range elements
· Wide-range accuracy over a 37 dB dynamic range
· Quick Change （QC） connectors to minimize the need for adaptors when making critical measurements

Power Range	2 mW - 10 W, 20 mW - 100 W, 200 mW - 1 kW or 2 W - 10 kW full scale in one single Plug-in Element
Frequency Range	200 kHz-2.3 GHz CW or FM
Insertion VSWR	N Connectors 1.25 max. to 2300 MHz
Connectors	QC Type （Female N normally supplied）
Ambient Temp Range [°C （°F）]	To 120% of nominal full scale （i.e.12 W, 120 W, 1200 W, or 12,000 W）. No damage or degradation to the unit will result, regardless of the Range Selector Switch position.
Finish	Gray Powder Coat
Nominal Size [inches （mm）]	6-7/8" x 5-1/8" x 3-5/8", including connectors （H x W x D） 175 x 130 x 92 mm
Weight	4 lbs. （1.8 kg）

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简要描述：鸟牌(Bird)4412A型通过式功率计功率范围为2mW-10W, 20mW-100W, 200mW-1kW or 2W-10kW full scale in one single Plug-in Element，频率范围为200 kHz-2.3GHz CW or FM

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