... Data of portable Ultrasound machine Gain 0-100dB,step 0.1dBDetection channels 1,2,4,8,16 Operation mode Single probe transmitter and receiver ... , dual probe transmitter and receiverScan mode A,B,C type scan ... )Detector modepositive, negative, bi-directional, radio frequency (RF)Peak memoryCan choose echo peak memory display,background peak wave ...