I am the technical engineer of SCADA department, TDST company, a company which is focused on the gas&oil market in China. Recently a leakage detection system is developed in TDST, which is applied in oil pipeline to detect the location of leakage occured on the pipeline. Now, a high performance and cheap RTU is needed to replace the RTU which is now using in the developing enviroment. The SCADAPack series are recommended. After have surfed the website of ControlMicroSysetem and look though the documents, a question about SCADAPACK100, SCADAPackLP is asked: The minmum interval between two RTU scan of the same analog input? For our system, it is a key parameter to decide whether the RTU product is met the requirement of the system. Thanks. Your Sincerely Wang Zhigang Scada Department Beijing Tsingda SmartTech Co., Ltd Tel:(8610)82896550-222 Fax:(8610)82896547