This is a frequency meter based on PIC microcontroller, with crystal oscillator measurement function and programmable addition and subtraction frequency settings, five-digit digital tube display, convenient and intuitive, all use in-line components, simple circuit, easy to make.
Circuit characteristics:
The measurable frequency range is 1 Hz-50 MHz (1Hz-50MHz);
Can measure the oscillation frequency of most common crystal oscillators;
Five-digit precision resolution (for example, 0.0050 kHz, 4.5765 MHz, 11.059 MHz);
Automatic range conversion, without manual switching;
Programmable addition and subtraction frequency settings, used to measure radio transceivers and other equipment;
Optional power saving mode, if there is no obvious change in frequency within 15 seconds, the display will be turned off automatically;
It can be powered by a universal USB 5V interface or an external DC power supply or 9V battery.
The number of components is small, all the components are directly inserted, and the installation and debugging are simple.
PCB size: 80*53 mm
Designed to measure the oscillation frequency of the most crystal oscillators.
Based on for PIC microcontroller can measure frequency of 1 Hz to 50 MHz.
Five digits accuracy.
Optional power-saving mode: automatically turns the display.
General USB interface for power supply, power supply or 9V battery can also be used be used.
Specifications
Color: Red
Material: PBS
Frequency range: 1 Hz-50 MHz
Crystal Test Range: 4 MHz-48 MHz
Built Item Size: 8 * 5.5 * 0.7 cm / 3.2 * 2.2 * 0.3 inches
