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The FC-758A is a multi-function frequency counter providing measurement functions of frequencyC periodC period averageC and addition accumlation. As a display, it used an 8-digit LED. Its display resolution is 10 Hz for up to 2.4 GHz, 1 Hz for up to 100 MHz and 0.1 Hz for up to 10 MHz. For period measurements, the period can be measured between 5 Hz and 25 MHz in micro-second order (unit of µsec.). For lower frequencies, period measurement is obtained at a higher accuracy than that of normal frequency measurement. Addition measurement is also possible for counting the number of phenomena which occur. A gate controll is also possible for the counting measurement for manual or external control to a higher degree of precision. In the display area, red LEDs are adopted to indicate various information with the automatic decimal position setting, zero blanking, measurement unit, over-flow, and with gate status. since a high-stability 10 MHz crystal oscillator is employed, the FC-758A assures an extraordinary stability against temperature change or fluctuation of AC power source, etc.
2.4 GHz Wide Bandwidth Design
The FC-758A features a wide bandwidth of 2.4 GHz; the top level in this class.
Low-Pass Filter Provided
Low-pass filter having the attenuation characteristics of -3 dB at 100 kHz is provided for reducing RF noise. It assures minimized mis-counting. (CH-A only)
Attenuator Provided
The -20 dB attenuator is provided for reducing the mis-counting which could occur due to excessive input. (CH-A only)
Data Hold Function
The -20 dB attenuator is provided for reducing the mis-counting which could occur due to excessive input. (CH-A only)
Addition Counting Function
Not only with manual operation using the front panel controls, but also it enables to start and stop counting for external signal.
4-Step Gate Time Setting and Automatic Decimal Position Selection
Since the gate time and the decimal point of the measured values are interlocked, the measurement is made possible with the most appropriate resolution.
Zero Blanking
Zeroes "0" at the digits above the display of the effective value will not be displayed.
Over Flow Indication
LED lights when the measurement value exceeds the displayed digits in order to prevent mis-counting.
Combination Tilt Stand/Carrying Handle
The carrying handle can be used as a tilt stand as it is for mounting the FC-758A with the best-viewing angle.
Pulse Width Measurement
Allows measurement of the pulse width up to 2 MHz (0.25 µs).
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