1、High-performance 1.2GHz frequency counter based on for Microchip's 8-bit microcontroller PIC16F648A 2、The minimum step of intermediate frequency adjustable is 100Hz, the intermediate frequency range is 0~999.9999MHz, and it is set to plus or minus intermediate frequency mode 3、Built in frequency reference adopts temperature‑compensated voltage‑controlled crystaloscillator (±2.5 ppm VC‑TCXO) 4、Adopt dual intermediate frequency design, intermediate frequency value and plus/minus mode can be preset separately 5、LCD0802 LCD screen display, up to 7 digits can be displayed, and the frequency value of invalid zero is automatically blanked 6、Anti‑reverse power supply design, provide low‑power battery‑powered solution 7、Come with double button control, which possess good man‑machine interface 8、Various settings are automatically saved in EEPROM and directly recalled after power‑on