Geekcreit® LTDZ 35M-4400M Handheld Simple Spectrum Analyzer Measurement of Interphone Signal

New update version Update from December please use the new manual Introduction Click here to open This product uses the local oscillator signal and the external test signal to obtain the difference frequency signal and calculates the amplitude of the external test signal through the detector Using a high precision VCO source the heterodyne signal frequency can be measured very accurately Since the scanning range is very large 35M 4400M because there is no special detection circuit for the external measurement signal due to cost and other factors the measurement amplitude may have errors Therefore the product increases the magnification and displacement parameters and the user can adjust the display waveform by himself The amplitude display is adjusted and calibrated Feature 1 Using stm32f407 single chip microcomputer main frequency 168M 4 3 inch TFTLCD 480 800 color LCD screen 2 All aluminum alloy shell rotary encoder control 3 USB power supply full English display 4 Spectrum display range 35M 4400Mhz input impedance 50 ohms 5 RBW 100khz 200khz 500khz a total of 3 gears are adjustable 6 Screen scan points 700 points 7 Scanning span 70M 100Khz 140M 200Khz 350M 500Khz 8 dBm range 80dB 10dB supports manual adjustment of the calibration range There is no amplifier circuit inside the machine If you need to measure small signals you need an external amplifier 9 Maximum access signal 10dB 10 Working mode superheterod