FC2002 hand-held frequency counter

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FC2002 hand-held frequency counter is a more professional counter, even advanced features such as field strength measurement and auto hold are incorporated. It is compact, truly pocket sized, test instrument designed for ease of use and dependable performance. Supplied as a complete with internal NiCd pack, AC wall charger and 7 section telescopic antenna. Specifications Frequency range 10 MHz - 3 GHz Weight 210 g Size 80 mm high x 68 mm wide x 31 mm deep Impedance 1 * dual purpose BNC Socket 50 Ohms input for range 1 MHz to 3 GHz 1 Meg Ohm input for range 10 Hz to 50 MHz Case Stamped aluminum with black anodized finish Battery Internal 4 x AA 600 mAH NiCd pack Power 9 VDC 300 mA Features 10 digit Liquid Crystal Display Hi-Z low range Filter to prevent display of random noise Automatic hold Measures frequency and period LED back light Beeper Low power consumption (Average 6 hour battery life) Hold switch to lock display Low battery indicator Ultra sensitive synchronous detector 16 section bargraph to show RF signal strength High speed 300 MHz direct counter with 0.1 Hz resolution 4 selectable gate speeds Controls Power Switch - This slide switch turns the counter on and initiates a 2 second test of all the LCD segments. Amp Switch - This slide switch selects either the 1 Meg Ohm high impedance amplifier or 50 Ohm amplifier and prescale. Range Switch - This should be switched to the 300 MHz position for frequencies between 1 MHz and 300 MHz and switched to the 3 GHz position for frequencies between 10 MHz and 3 GHz. Lite Switch - This slide switch turns the LCD back light on and off. Filter Switch - This slide switch turns the filter on and off. Function Button - This selects the frequency or period. This button has four settings. One each for displaying frequency or period as these are received, and two settings for automatic hold of the first frequency or period captured. Hold Button - This holds the current display and stops the counter from counting. Gate Button - This selects the gate or measurement time. A longer gate time allows counting for longer period and results in higher accuracy. Calibration - The calibration adjustment opening is located on the front panel of the counter. This allows access to the trimmer capacitor that provides about a 10 PPM adjustment range of the time base oscillator. This is not usually necessary but to do so read a signal of an known frequency before adjusting the trimmer for correct frequency display. If you calibrate at 4.1943 MHz or above then the counter will be more accurate.

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Beijing tianzhenghe Science and technology develop

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