Function: 1. [Compact and portable] Handheld vector network analyzer that provides excellent vector network measurements. Standalone, 2,8-inch LCD display, easy to operate and use. Compact and portable, battery powered or via USB. 2. [Measurement methods] The TX and RX methods of the network analyzer measure the complete parameters S11 and S21. If it is necessary to obtain S12 and S22, you need to manually change the wiring of the transceiver port. 3. [Interference resistance] The HF VHF UHF UV VNA antenna analyzer can support do 900 MHz using the odd harmonic extension si5351. Metal cover to reduce external interference and improve measurement accuracy. 4. [Measuring Range] The si5351 direct output in the 50k-300MHz range provides dynamics better than 70dB, the extended 300M-600MHz band provides dynamics better than 60dB, and the 600M-900M band provides dynamics better than 50dB. 5. [export PC] vector network analyzer designed so,to match do original equipment (OE),creation and function of simple and practical software do computer control PC,can be exported za through computer software do various programs do design and simulation of test radio (snp ) file. Specification: Item Type: Network Analyzer Material: PCB Measurement frequency: 50KHz-900MHz RF output: -13dbm (maximum -9dbm) Measuring range: 70dB (50kHz-300MHz), 50dB (300M-600MHz), 40dB (600M-900MHz) SWR port: <1,1 Display: TFT 2,8 inch (320 x 240) USB interface: USB type C Communication mode: CDC (serial) Built-in lithium polymer battery: 400 mAh 0,8A Scanning points: 101 (fixed) Display tracking: 4, character: 4, set saving: 5 Frequency Error: <0,5 ppm List of packages: 1 x Network Analyzer 4 x Akcesoria do connections 2 x SMA cable 1 USB cable 1. Set the frequency range (stimulus, beginning and end or center and span). 2. Calibration (calibration). 3. Select format display and channel (Display). 4. Save (save). You can change the format of the display and channel selection at any time. In normal test mode, tap the right area of the screen or press the multifunction key to display the menu. Tap the screen or turn the multifunction switch to select a menu item. If you need detailed instructions, please consult customer service for an electronic instruction manual.