Frequency Measurement Counter Display RF Signal Counter Cymometer 0.1MHz~65MHz

Description

Frequency Measurement Counter Display RF Signal Counter Cymometer 0.1MHz~65MHz
Feature:
1. The product is 65MHz frequency meter based on for Microchip's PIC16F648A
2. Frequency reference adopts temperature‑compensated voltage‑controlled crystal oscillator (±2.5 ppm VC‑TCXO)
3. Using unique gate control method and accurate time algorithm (non-interrupt mode)
4. Frequency measurement accuracy is 10Hz/100Hz (shift one bit to the right) optional
5. Gate(display refresh) time is 0.1 second, real‑time display frequency value
6. Dual intermediate frequency design, intermediate frequency value and plus/minus mode can be preset separately, not affect each other
7. The display driver adopts a dedicated chip for LED display, and the digital tube has high brightness and little external interference
8. Adopts 6‑digit 0.56in digital tube display, invalid zero automatic blanking, eight‑level brightness is adjustable
9. Simple circuit possess reasonable structure, double button control bring simple operation
10. Various settings can be automatically saved and directly recalled after power‑on
Specification:
Item Type: Frequency Measurement Module
Material: PCB
Purpose: Mainly used to display the frequency value of transceivers and other equipment, and can also be used for routine frequency measurement.
Gate Time: 0.1 seconds
Input Impedance: High impedance
Measuring Range: 0.1 MHz ~ 65 MHz
Measurement Accuracy: 10 Hz
Sensitivity: Better than 60mVPP
Frequency Reference: 13.000MHz temperature compensated voltage controlled crystal oscillator (VC-TCXO) in 5032 package, frequency stability is ±2.5 ppm.
DC Input: DC 8V~15V (with power polarity reverse protection) or DC 5V (hardware setting required).
Working Current: 90 mA maximum
Display Digits: 6 digits common anode LED display, the highest display is six digits.
Onboard Interface:
RFIN (signal input): HX2.54-2P socket
ICSP (programming interface): 2.54-6P pin
DCIN (power interface): HX2.54-2P socket
How to Use:
1. Please check the power supply voltage (DC8V-15V) and polarity before use, and then turn on the power supply after confirmation. The power supply circuit of this machine is connected with a diode, and the power supply polarity is reversed, the machine will not work, but it will not produce destructive consequences.
2. The measurement signal input 2P square socket is connected to the test line (wired method) or antenna (induction method).
3. Setting Function: IF value setting, plus and minus IF switching, LED brightness setting
4. Measuring Frequency: Use the test line to connect the RFIN (signal input) port to the local oscillator output of the transceiver or other test points, and the LED screen can display the frequency value of the test point in real time. The high-impedance input design of this module is beneficial to reduce the impact on the local oscillator circuit. The local oscillator output signal of the transceiver should have a certain strength (greater than 60mVpp). The oscillation of NEG02NE612 and the like is weak, and stable frequency values may not be read
Package List:
1 x Module
2 x Connection Line
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