Delay Trigger in the Application of Network Testing System

作者：MA Min; YAN Hao; XIAHOU Shi ji; School of Automation Engineering University of Electronic Science and Technology of China

来源：Journal of Dong Hua University (english Edition), 2015, (01): 132-135.

• LXI instrument
• synchronization accuracy
• network testing system
• delay trigger

The researchers who study the local area network( LAN) eXtension for instrumentation( LXI) instrument are pursuing instrument’s high-precision synchronization. In the paper,three synchronization modes were discussed which were clock synchronization, trigger synchronization, and response synchronization. Synchronous process between LXI instruments was analyzed and each time factor affecting the synchronization accuracy was discussed. On the basis of the analysis,it can be found that delay trigger plays an important role in the network testing system’s synchronization. Delay trigger can produce an additional time interval to correct the difference of each LXI instrument’s response time. Then,a method to realize the delay trigger was introduced. Delay time can be adjustable according to the actual demand. Finally,synchronization accuracy of network testing system can reach nanoseconds.

• 出版日期2015-2-28
• 单位电子科技大学