PLJ-8LED is a cost-effective frequency display component of 8-bit digital tube display. It is mainly used for the display of frequency values of transceiver and other equipment, and can also be used for conventional frequency measurement. This component has the characteristics of compact and delicate, reliable performance, good visual effect and low cost. _x000D_ _x000D_ Features: _x000D_ With Microchip's PIC16F648A, 2.4 GHz frequency meter. _x000D_ Using temperature-compensated voltage controlled crystal oscillator (2.5 ppm VC-TCXO). _x000D_ Unique gate control and precise time algorithm (non-timed interrupt). _x000D_ Gate (display refresh) time 0.01 seconds / 0.1 seconds / 1.0 seconds, real-time display frequency value. _x000D_ Single-ended input design, three-channel frequency measurement (low channel / high channel / Auto Channel). _x000D_ Dual frequency design, value and IF / down mode can be preset separately. _x000D_ Using eight 0.56 inches high brightness digital display, eight adjustable brightness. _x000D_ Circuit is simple and reasonable structure, two-button control, simple operation. _x000D_ The settings are automatically saved, boot directly call. _x000D_ _x000D_ _x000D_ Specification: _x000D_ Model:PLJ-8LED-H_x000D_ _x000D_ Type: Backlight font red, Backlight font blue(Optional)_x000D_ _x000D_ 1. Gate time: _x000D_ 0.01 S _x000D_ 0.10 S _x000D_ 1.0 S _x000D_ _x000D_ 2. Measurement channels (channels are low impedance): _x000D_ low channel _x000D_ Measuring range: 0.1 MHz ~ 60 MHz _x000D_ Accuracy: 100Hz (0.01 1s gate time) _x000D_ 10Hz (0.1 seconds gate) _x000D_ 1Hz (1.0 seconds when the gate) _x000D_ Low channel sensitivity: _x000D_ 0.1 MHz ~ 10 MHz: better than 60mVPP _x000D_ 10 MHz ~ 60 MHz: better than 60mVPP _x000D_ 60 MHz ~ 75 MHz: Not tested _x000D_ high channel (divided by 64) _x000D_ Measuring range: 20 MHz ~ 2.4 GHz _x000D_ Accuracy: 6400Hz (0.01 seconds gate) _x000D_ 640Hz (0.1 1s gate time) _x000D_ 64Hz (1.0 1s gate time) _x000D_ High channel sensitivity: _x000D_ 20 MHz ~ 30 MHz: better than 100mVPP _x000D_ 30 MHz ~ 60 MHz: better than 50mVPP _x000D_ 60 MHz ~ 2.4GHz: not tested _x000D_ Auto Channel _x000D_ Automatically selected according to the input signal frequency high or low channel channel, identifying the frequency of 60 MHz. Such as when the input signal amplitude is greater than 60 MHz shortage can not automatically select high channel, the channel should manually select high frequency measurement. _x000D_ 3,IF settings _x000D_ Independent double-IF design, adjust the minimum frequency step of 100 Hz,frequency range 0 ~ 99.9999 MHz, can be set to increase or decrease the IF frequency mode. _x000D_ 4. Frequency reference _x000D_ Using 5032 package 13.000MHz Warming voltage controlled crystal oscillator (VC-TCXO), frequency stability of 2.5 ppm. _x000D_ 5. Operating voltage _x000D_ DC Input: DC 9V ~ 15V (with reverse polarity protection) _x000D_ 6. Current _x000D_ Maximum 160 mA (test conditions: 1) DC12V power supply; 2) red LED; 3) eight brightness) _x000D_ 7. Eight LED display, the highest display eight digits. _x000D_ 8. Eight LED brightness is adjustable, factory set to maximum brightness. _x000D_ 9. Physical Dimensions,Length x width x height: 125.5 mm x 25.5 mm x 21.5 mm _x000D_ 10. Component quality 46 g (NW) _x000D_ 11. Onboard Interface _x000D_ 12.DC IN (Power Interface): HX2.54-2P socket _x000D_ 13.RF IN (signal input): HX2.54-2P socket _x000D_ 14.ICSP (programming interface): 2.54-6P Pin _x000D_ 15.Weight: Approx.47g/1.7oz_x000D_ _x000D_ _x000D_ Package list: _x000D_ 1 x Frequency Counter _x000D_ 2 x cable