　◇Using anechoic box, the wireless system evaluation environment such as Bluetooth and 2.4GHz wireless information terminals is provided. ＊Application＊ Recently, information devices using 2.4GHz band including Wi-Fi have been increasing.　When evaluating wireless system of Bluetooth or 2.4GHz wireless information terminal, it is necessary to be separated from the unnecessary wave traveling around to avoid the interference. By use of the anechoic / shield box, it is possible to cut off the unnecessary interference wave and to be evaluated in a stable environment. ＊Solution＊ ① For evaluation at development and design ・・・・The radio wave radiated from EUT placed on turntable is received with the antenna installed in the opposite side. ・By connecting such instruments as spectrum analyzer and power meter, the transmission characteristics can be evaluated. Frequency deviation Occupied & spread bandwidth Spurious radiation strength Antenna power Radio wave strength emitted subordenately ・ Beam angle of antenna ・ Frequency hopping dwell time Reflection Connection example）・・・・・ ●Anechoic box (MY1530) MY1530) ●Spectrum analyzer Radio wave absorber Absorption Receiving antenna RF S/W EUT I/F module ・Mode setting ・Power supply,etc Transmission & reception PC ●Signal generator Turntable PC control ② For production facility and quality evaluation ・・・・Communicating between radio terminal and radio dongle, the connection test is performed. ・Using a measurement control software provided to the terminal, the confirming tests such as packet error, throughput and receiving level are performed. Connection example） ●Anechoic box (MY1525) MY1525) ●Spectrum analyzer Radio wave absorber (MSA458) Receiving antenna Terminal PC I/F /F module ・Mode setting ・Power supply,etc Transmission & reception ・Wireless connection test Dongle For waveform minitor PC control ＊System configuration＊ Configuration example of ① Configuration example ② １．Anechoic box　/　MY1530 １．Anechoic box　/　MY1525 ２．Turntable　/　MT103 ２．I/F module　/　IFM10 ３．I/F module　/　IFM1 ３．8.5GHz spectrum analyzer　/　MSA458 ※Other：Spectrum analyzer, signal generator, RF S/W and antenna ※ Other：Connection cable 2012/11 MICRONIX Corporation 2987-2 Kobiki-cho, Hachioji-shi, Tokyo Japan Tel: +81-42-637-3667 Fax:+ 81-42-637-0227 URL http://www.micronix-jp.com E-mail [email protected]