New Arrival 5 digit Display Frequency Meter LED DIY Kits 1Hz 50MHz Crystal Oscillator Tester Frequency Counter Tester Meter (60757722779)

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Price:RUB 301.36
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Product Overview

Description

 

 

This is a frequency meter based on PIC microcontroller, with a crystal measuring function and programmable addition and subtraction frequency settings, five digital display, convenient and intuitive, all use the line components, the circuit is simple, easy to make.


Circuit features:

Measurable frequency range from 1 Hz to 50 MHz (1 Hz-50 MHz);
Can measure the oscillation frequency of most commonly used crystals;
Five digit resolution resolution (eg 0.0050 kHz, 4.5765 MHz, 11.059 MHz);
Automatic range conversion without manual switching;
Programmable addition and subtraction frequency settings for measuring equipment such as radio transceivers;
Power-saving mode can be selected. If there is no obvious change in frequency within 15 seconds, the display will be turned off automatically.
You can use the universal USB 5V interface to power, you can also use an external DC power supply or 9V battery.
The number of components is small, all the line components, installation and debugging simple.
PCB size: 80*53 mm
Single set weight: 0.034KG

Crystal measurement (4M, 16M crystal):

 

Crystal measurement (20M, 11.0592M crystal):

 


32.768KHZ crystal can not be measured, limited conditions only measured 4-20MHZ crystal can be measured, 48MHZ can also be measured, but because this crystal is the use of 3 times harmonics, so the 48MHZ crystal measurement will show the fundamental frequency of 16MHZ ,As shown below:


It is also possible to directly input a frequency signal between IN and G (ground) for measurement. Note that the amplitude of the measurement signal should not be higher than 5V to avoid damage to the IC. The following figure shows the input 1HZ and 10KHZ:


 

 


All the line components, according to the PCB screen printing can be properly welded, after welding is completed using a standard signal source input signal, adjust the yellow adjustable capacitance so that the display value and signal frequency can be equal. Can use our shop's signal generator to adjust, if there is no standard signal, you can also use the crystal with good precision to calibrate directly.

The power supply can use a USB-to-3.5mm power cable, and can also directly input 5-9V DC power at the - and + pads.

60757722779
0.0068 s.