This instrument has four interfaces: single point measurement,scanning,system information,correction and calibration;The default boot into single-point measurement interface.Aluminum alloy shell prolongs its service life.Note: For the convenience of the user,each time calibration correction options will automatically change to the user calibration.Meanwhile,in order to ensure the integrity of the calibration,the calibration process,the automatic shutdown function fails,the consistent boot. Model No.: N1201SA/PS100[the same function]; Working; Frequency: 137.5MHz~2700MHz; 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. Impedance Measurement Range: 1 ohm~1000 ohm @frequency less than 1300MHz;1 ohm~300 ohm @frequency more than 1300MHz (Impedance Absolute Value); 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% +/- 0.1 ohm (Z less than 200 ohm, 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. Startup & Shutdown: Hold down the CTRL key off press the power switch button. The boot state, long press (2S above) the switch button, after the release, the instrument will shut down Advice when Using: In order to ensure the accuracy of measurement and calibration, preheat the instrument at least 15 minutes. Try to use good quality RF cable and connectors. Calibrated cable marked to the next may not need to calibrate and direct use. Test cable process affect the measurement accuracy, it is recommended that, where possible, do not choose too long test cable. Measurement and calibration before, make sure you are not in a strong wireless signal, so as to avoid interference caused by inaccurate measurements. If the impedance measurements themselves do not understand, you can refer to a vector network analyzer instructions and tutorials. This instrument is equivalent to a single-port vector network analysis. colour: black Material: plastic Size: 98x83x28mm Package Contents: 1 x PS100 Antenna Analyzer SWR Meter