Mini chip's 8-bit microcontroller PIC16F648A as the core of the high-performance 1.2GHz frequency meter. Built-in frequency reference using temperature compensated voltage-controlled crystal oscillator ( 2.5 ppm -TCXO).<br> Dual IF design, IF and add / subtract mode can be individually preset. LCD0802 LCD screen display, up to 7 digits can be displayed, the frequency value is invalid zero automatic blanking.<br> Anti-power reverse design, low-power battery-powered programs. Double-button control, good man-machine interface. The settings are automatically saved, boot directly call.<br> Gate time:0.64 sec<br> Measuring range: 1 MHz to 1.2 GHz<br> Measurement accuracy: 100Hz<br> Channel Sensitivity: (HM8134-2 data)<br> Test Frequency (MHz): 5 10 30 60 100 150 200 300 450<br> Sensitivity (mV RMS): 35 20 10 3 3 4 8 15 12<br> Test Frequency (MHz): 500 550 600 700 800 900 1000 1100 1200<br> Sensitivity (mV RMS): 14 30 65 80 80 35 175 270 310<br> Operating voltage:DC input: DC 9V - 12V (reverse polarity protection with power supply)<br> Operating current:Enable backlight: less than equal 55 mA<br> Display digits:The highest 8 digits are displayed<br> IF settings:IF adjustable minimum step of 100 Hz, the range of 0 to 999.9999 MHz, can be set to increase the IF or reduced IF mode.<br> Frequency reference:The 13000-MHz temperature-compensated voltage-controlled crystal oscillator (-TCXO) in a 5032 package has a frequency stability of 2.5 ppm.<br> RF INPUT (measurement signal input): XH2.54-2P square mouth socket<br> ICSP INPUT (MCU programming interface): XH2.54-6P pin<br> POWER INPUT (power connector): XH2.54-2P square port socket<br> name:Frequency Meter<br> Colour:As Shown<br> Material:PCB+Plastic+Metal<br> Package Contents:<br> 1 x PLJ-0802-E frequency counter meter with cable<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.