The -V2 Portable Vector Network Analyzer Is A Product Based On Owocomm'S S-A-A-2 Design, Which Has Been Greatly Upgraded In Performance. The Measurement Range Is Extended To 50KHz-3000MHz, And The Dynamic Range Is Larger, Reaching 80db. It Can Be Used To Debug The Duplexer Of The Uv Frequency Band, The Measurement Is More Accurate, And The Simple, Flexible And Fast Operation Interface Is More Practical. The Performance Of This Oyanet Kills All Versions Of This Series On The Market. It Can Test The Standing Wave Impedance Of The Antenna, The Insertion Loss And Isolation Standing Wave Of The Filter, And The Attenuation, Shortening Factor And Phase Of The Cable. It Can Also Test The Magnification Of The Antenna Amplifier. It Also Has The Function Of A Frequency Meter. It Can Also Measure The Cable Length. Upgrade the firmware by way of virtual U disk, no need for programmer, only need a USB cable to upgrade the firmware; Expand a USB power output interface, 5V/1A output (can be used as a charging treasure); Use high-current 2A charging IC, shorter charging time; Support the upper computer, you can use the computer as the display interface; Note: Calibration parts (50 standard load x1, open circuit calibration parts x1, short circuit calibration parts x1, using the attached calibration parts, the instrument can get good measurement results after calibration, if you change the measurement conditions such as adding an adapter line, modifying the frequency range, then Recalibration is required and the parameters are stored in 0-4. All parameters can be recalled through the "Callback" function. If the requirements are not very , a full-band calibration can be performed. It can also be used after changing the frequency range. Only at this time there will be some errors) Colour: Material:plastic Size:129 x 75 x 22mm Package Contents: 1 x host 1set x calibration piece 1 x SMA-F double-headed hole (SMA female double-way) 1 x SMA elbow outer screw inner hole to inner screw inner needle 1 x Type-C data cable 1 x stylus Only the above package content, other products are not included. 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.