Frequency output range: 23.5-6000Mhz. There are two modes: bit frequency and sweep frequency.Minimum control accuracy: 0.001Mhz.Amplitude control: -4dB -1dB +2dB +5dB.Power supply mode: USB 5V power supply.Control method:Adjust the frequency output through 5 buttons on the board.Serial port control method 1: Onboard USB to serial port chip, computer can be directly controlled, no control software is provided.Serial port control mode 2: Through the board serial port interface, controlled by other hardware devices.(Provide serial port control communication protocol)size:65mmx37mmx12mmMaterial:plasticcolour:greenPackage Contents:1 * Spectrum Signal SourceOnly 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.