The DS2100A is exactly the same as a DS2100B the simplified version of the hardware, the software function is only simplifies removed automatically qualified to determine the function. Test indicators, the same function. 2100B and 2100A most cost-effective. The DS2100B economy is the largest amount of digital TV test instruments on the market today. With the main function of the bit error rate test, the average power test, the slope test. DS2100 and 2100Q high version, channel scan and constellation. Zhengzhou Hanson Radio and Television Communication Equipment Co., Ltd. Contact: Mr Zhu Tel: 18,939,564,786 QQ: 625 132 122