Impedance Measurement Range: 1 ohm~1000 ohm @frequency less than 1300MHz; 1 ohm~300 ohm @frequency more than 1300MHz (Impedance Absolute Value).Click The Measurement Interface. Aluminum Alloy Shell Extends Service Life. Note: For User Convenience, The Calibration Option Will Automatically Change To User Calibration Each Time It Is Calibrated. At The Same Time, In Order To The Integrity Of The Calibration, During The Calibration Process, The Automatic Shutdown Function Fails And Is Turned On Consistently. The Attached Video Shows The Correct Of Opening The Device. The Keys On The Panel Are 1234 From Left To Right. You Need To Press 2 And 4 At The Same Time. Power On And Off: Hold Down The Ctrl Key To Power Off, And Press The Power Switch Button. When The Instrument Is Powered On, Press And Hold (More Than 2s) The Switch Button. After Releasing, The Instrument Will Shut Down. When The Instrument Is Powered On, Press And Hold (More Than 2s) The Switch Button. After Releasing, The Instrument Will Shut Down. Usage Recommendations: To The Accuracy Of Measurement And Calibration, The Instrument Must Be Warmed Up For At Least 15 Minutes. Try To Use Rf Cables And Connectors. Model: PS100 Working Frequency: 137.5MHz~2.7GHz Stepped Frequency: 1kHz Display: 2.4inch TFT with resolution 320x240(QVGA) Power Consumption less than 1.5W Charging Current: 400mA Charging Port: USB Auto Power Off: Settable 5-60minutes Measured Parameters: Impedance, reactance, SWR and S11 Resolution: 4-digit readings Frequency Accuracy: less than +/- 10ppm Connector: SMA-K Standing Wave Measurement Range: 1~65 @frequency less than 1300MHz 1~10 @frequency more than 1300MHz S11(dB)Measurement Range: 0dB to -50dB Error (Single-point measurement): For Impedance: less than Impedance absolute value x 5% +/- 0.1ohm (Z less than 200ohm, less than 1.5GHz) For Standing Wave: less than Effective readings x 10% +/- 0.1 For S11: 0.1dB/5(0dB to -10dB) For (dB/): 1dB/10(-10dB to -20dB); 5dB/20(-20dB to -40dB) Directivity: less than 35dB (140MHz to 2GHz after calibration); less than 30dB (2GHz to 2.7GHz) Scanning Points: 280 Output Level: -18dBm Working Temperature: 0 to 40 Atmospheric Pressure: 860hPa~1060hPa Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use With "RF VECTOR ANTENNA ANALYZER METER PS100" words Material: Aluminum alloy colour: Black Package Contents: 1 x Antenna Analyzer 1 x Data Cable 1 x English Manual 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.