At present, the leading brand of the Logic Analyzer is the Zeroplus Technology which issues the brand-new Protocol Analyzer Decoding Modules, WIEGAND and SPI PLUS. And the two modules give the R&D engineers a new analysis edge tool! The Protocol Analyzer Decoding Module, developed by Zeroplus Technology, has a lot of features; such as it has the unique human operating interface, which utilizes the simple and easy button configuration to replace the original complex function; and it makes the speed of analysis more quickly. At the same time, the packet of the Protocol Analyzer Decoding Module can be displayed with the graphical mode, which can help the R&D engineers save a lot of time in the process of decoding the signal. WIEGAND, constituted by the SIA （Security Industry Association）, is a kind of Communication Interface of No-contact IC Card Reader. The protocol defines the specifications of the common control applications, encryption security or the other industrial application fields. And the manufacturers can standardize the interface of the Card Reader according to the protocol. WIEGAND is mostly used for the No-contact Card Reader, such as Access Sensing Card, Security Systems and so on. The Protocol Analyzer WIEGAND Decoding Module has neither the fixed communication speed nor the fixed data length, it transmits the data by the Data 0 or Data 1 in the Protocol Analyzer. At present, the most common modes are 26bits, 39bits and 44bits. With the help of the function of the Protocol Analyzer WIEGAND Decoding Module of Zeroplus Logic Analyzer, the R&D engineers can easily analyze PARITY, OEM CODE, FACILITY CODE and ID NUMBER in the signal. The engineers need not do the manual decoding according to the waveform, they can set the Data Length, Clock Width and the Clock Internal through the factual signal when engineers use the Zeroplus Technology Logic Analyzer to do the development or do the debugging parity. According to the Protocol Analyzer Decoding Function of Zeroplus Logic Analyzer, the packet of the Protocol Analyzer can be displayed with the graphical mode, which makes engineers learn the packet data of the signal at the first time; thereby it can help engineers save a lot of time and improve the working efficiency. SPI(Synchronous Peripheral Interface) is a kind of 4-line Protocol Analyzer, which communicates with the master-to-slave mode. It consists of SCK, MOSI (SDO), MISO (SDI) and SS (CS). The SPI is mainly applied in the data transmission of the Microcontroller, which is usually used for the control of LCD, SD/MMC Memory Card or Flash/EEPROM and so on. In a word, it is used widely. Besides the four main Pins, there are also two groups of the important parameters for SPI, such as CPHA and CPOL, from which there are four kinds of the different SPI Modes derived. And the four modes are mainly used to decide the decoding mode of the data in the SPI signal. In the Protocol Analyzer SPI PLUS Module, it adds the synchronous sampling function which is implemented by using the SPI CLOCK. So the engineers can master the signal with the function when they analyze the SPI, and further it improves the working efficiency. If you want to learn more information, please visit the website http://www.zeroplus.com.tw/ about ZEROPLUSof Zeroplus Technology. Zeroplus Technology Co., Ltd was established in 1997, it focuses on the design of the peripheral products of computer games. In 2004, the business scope was extended to the electronic measurement instruments. Applying the advanced MCU programming technology, the company successfully developed the latest patented measurement instrument: PC-Based Logic Analyzer. And the unique and innovative technology was accredited by a number of patents granted, the regions or countries where the company applied for patent have covered all over the world and the number of the patent and the country continues to grow. Since the release in 2005, the Logic Analyzer has been widely adopted by tens of dozens of public-listed technological manufacturers in the IC industry and the tertiary educational institutions. The excellent sale has made the Logic Analyzer the most popular in the market.