The ordinary differential instrument on the market are only white, purple + ordinary magnifying glass, long time use of words also have an impact on the vision, the most important is the low magnification magnifier, the observation range is limited, inconvenience to the identification work, PF-4000 is the latest version of the professional bill differential analyzer, which is a portable instrument, will be altered tickets, ticket cloning can be intuitive, convenient, catch all in one draft, quickly on money or ticket printing, paper, ink, infrared, ultraviolet, fiber and other characteristics of professional identification, mainly on bank acceptance bills, checks and other bills of a comprehensive appraisal, is essential for banking professional appraisers and discount service tools. PF-4000 notes differential analyzer, with the help of the new chip technology and optical sensing technology, more high to enhance the resolution of the instrument discriminant analysis, clarity and magnification, to identify ticket cloning, splicing ticket, altered tickets, dig excess effect is obvious, greatly reducing the false identification time and reliability. Characteristics and Description: PF-4000 multi-purpose ticket video discriminator is aimed at all kinds of bank bills, vouchers, RMB and foreign currency, a passport, a ID card, confidential documents authenticity of identification and design of special equipment, intuitive, convenient and fast to monetary or ticket paper, printing, UV, IR, UV, fibers such as silk characteristics of professional identification, mainly of bank acceptance bills, checks and other bills were comprehensive identification, identification of bank professional personnel essential tools. Function description white top white mode through the observation notes of rainbow printing, red and blue silk fibers, water soluble line, micro text, graphic information, determine the authenticity of the tacit. The white side mode by intaglio printing paper, determine the authenticity of observation instruments. Half side white mode through the observation of money concealed text, gravure printing etc. to determine the authenticity. Half side white alternating pattern by observing the monetary variable light ink, invisible text, determine the authenticity of intaglio printing. White hat, white side, half white alternating pattern by observing the monetary variable light ink, gravure printing, etc. determine the authenticity of the watermark. Infrared top infrared mode to determine the authenticity of the various imaging characteristics by observing the infrared ink printing. By observing the characteristics of various imaging features and the changes of the concave and convex in the infrared ink printing, the model can judge the true or false. Infrared alternate mode observation instruments or money in a variety of infrared printing ink printing image, can quickly identify the various types of altered tickets. Violet UV mode through observation paper colored fluorescent fibres, colorless fluorescent fiber, coloured fluorescent ink, colorless fluorescent ink, red water solution of ink in a purple light response to judge the authenticity. Other outside the viewing screen of the machine comes with a 3.5 inch screen, through the visual screen can be directly seen in all images, a pair of one to one. Directly be able to judge the authenticity, greatly improve the efficiency of the bank. Computer network through special conversion equipment and software can connect with computer, image real-time transmission, convenient professionals on ticket image for editing or video, and the relevant information in the form of video or image transfer.