Features: brand new and high quality Use Smith chart for impedance matching; Measure standing wave ratio;Measure the attenuation in the cable; The advantages of vector network analyzer GS-320 23-6200 MHz: with 3.2-inch color resistive screen that can display measurement results and control the device. High-precision measurement: 0.25 dB and 1.5- in the entire frequency range;Scanning speed up to 1000 points/sec. Display chart: Smith chart; polar chart; phase of reflection coefficient; amplitude; logarithmic amplitude; VSWR, fault distance; cable loss Suitable for the matching and debugging of radio frequency circuits of Bluetooth-compatible, wifi, 2.4G, 5.8G, GPS, various frequency band IoT devices security products. Specifications: Operating frequency range: 23-6200 MHz Frequency resolution: 10 kHz Maximum scanning points: 1000 Scanning speed: 1000 points/sec Phase measurement accuracy Note 1:> 1.50 Amplitude measurement accuracy Note 1:> 0.25 dB Determine the resolution of the distance to the fault point Note 2: (C x for Vf) / 2S for m Maximum length of measuring cable Note 3: 3000m (Vf=1) Maximum for DC input voltage: 25 V Operating temperature range: 0 ... +40C Diagonal screen: 3,2 inches Screen type: resistive Screen resolution: 320240 Battery capacity: 4000 mAh Battery charging time: ~6 hours Overall dimensions (length width height): approx 1457524mm/5.7x2.95x0.94in Weight: 0.48kg Note: 1. Warm up the device for at least five minutes, and perform the measurement after complete single-port calibration. The ambient temperature change from calibration to measurement must not exceed 3C. 2. Where C is the speed of light for m / s; for Vf is the speed factor and the value is 0.1 to 1 according to the cable; S is the scanning frequency range in the frequency task (Hz). 3.This device is suitable for amateur radio applications. Package includes: 1 x GS-320 Handheld Vector Network Analyzer 23-6200 MHz 1 x Typc-USB Connection Cable 1 x SOL Calibration Parts 1 x N Female to SMA Male Adapter 1x for Touch Screen Pen