DDS-120/140 is a medium-performance oscilloscope. It can be extended to achieve oscilloscope, signal generator and logic analyzer triple main functions by inserting different sub-modules. The highlighting advantages are the optional modular structure and high performance price ratio. When you do not want to spend a high price to buy a traditional oscilloscope, a signal generator and a logic analyzer .This product will be a good choice.DDS-140 body take operation of traditional oscilloscope operation and part function of display transfer drawing...