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并行脚本运行是运行TSP-Link[1]网络中远程脚本的能力。当初推出2600系列数字源表时，脚本只能在TSP-Link网络的一个节点上运行。由GPIB唯一地址定义的这个节点(主节点)，能够控制其他节点（远程节点）的源和测量动作，但这种操作只能按顺序进行。这些限制使得在单一TSP-Link网络中不可能实现真正的并行测试。因此，在并行测试应用中，很少使用TSP-Link，以支持GPIB[2]通信线缆分离至多个节点，以及通过分离至2600系列数字源表数字[3]I/O端口的连接实现触发。

Parallel script execution is the ability to run scripts on remotenodes in a TSP-Link network. When the Series 2600 wasoriginally introduced， scripts could only be executed on onenode of a TSP-Link network. That one node (the master node)，defined by a unique GPIB address， was capable of controllingthe source and measure actions of other nodes (remote nodes)，but such operations could only be performed sequentially. Theselimitations made it impossible to obtain true parallel test ina single TSP-Link network. Consequently， the use of TSP-Linkwas largely abandoned for parallel test applications in favor ofseparate GPIB communication cables to multiple nodes and triggering by means of a separate connection to the Series 2600digital I/O port.

2600A系列数字源表[4]通过支持TSP-Link网络远程节点脚本的运行，克服了TSP-Link并行测试的局限性。图7给出一个并行测试应用。节点可以配置为分组，组长可以通过运行脚本，来控制本组内任何节点的操作。这种按组分配是动态的，可以利用SMU组合对一个器件进行测试，然后，为了独立运行针对多个器件的测试，可以将相同的SMU重新分配给不同组。这些分配只需使用软件命令即可完成。此外，2600A系列数字源表触发模型，使得在TSP-Link连接中，利用硬件触发信号，就可以实现TSP-Link网络各节点之间源和测量动作的同步。

Series 2600A addresses the limitations of parallel test over TSP-Link by enabling execution of scripts on remote nodes of the TSP-Link network. Figure 7 illustrates one parallel test application. Nodes can be configured into groups and a group leader can execute scripts to control the operations of any node in its group. Such group assignments are dynamic, making it possible to test one device with a collection of SMUs and then later reassign the same SMUs to different groups in order to run tests on multiple devices independently. These assignments are made using only software commands. Furthermore, the Series 2600A trigger model makes it possible to synchronize the source and measure actions across all nodes within the TSP-Link network using hardware trigger signals in the TSP-Link connection.

图7  并行脚本执行配置实例。  

这种测试配置的灵活性允许测试工程师对SMU[5]进行重新分组和重新分配，迅速准备新器件的测试，实现了资源利用的最大化。动态配置，加上其履行并行测试的能力，可以将变换硬件设备的时间降到最少，并允许在所有SMU上同时运行独立测试，因此可以降低测试成本。

This flexibility of test configurations maximizes resourceutilization by allowing test engineers to regroup and reassignSMUs quickly in preparation for testing a new device. Dynamicconfiguration， coupled with the ability to perform tests inparallel，lowers the cost of test by minimizing the time spentchanging hardware setups and allowing independent tests to runon all SMUs simultaneously.

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[1] TSP-Link http://www.keithley.com.cn/events/proddemos/newdemofolder/TSP.html

[2] GPIB http://www.keithley.com.cn/data?asset=54366

[3] 2600系列数字源表http://www.keithley.com.cn/products/semiconductor/sourcemeasureunits/series2600sys

[4] 2600A系列http://www.keithley.com.cn/news/prod080923

[5] SMU www.keithley.com.cn/data?asset=56186