... quality and favourable priceTechnical Parameters: 1. Five display format: B,B+B,4B,B+M,M; Image grey scale: 256 levels2. Freezing, real ... requirement of clinical diagnosis7. Frequency Conversion: 2.5MHz ,3.5MHz ,4.5MHz ,5.0MHz, 5.5MHz, 6.5MHz, 7.5MHz, ... Processor, PAL-D and VGA video transmission, external screen monitor, colorful screen, video tape recorder, video image printer ,laser printer etc. ...