Model 2651A High Power System SourceMeter® Instrument Reference Manual Section 6: Instrument programming
2651A-901-01 Rev. A / March 2011 6-57
Group leader overview
Each group has a dynamic group leader. The last node in a group running any operation initiated by
the master node is the group leader.
The following list describes the functionality of the group leader:
• Runs operations initiated by the master node
• Initiates remote operations on any node with the same group number
• Cannot initiate remote operations on any node with a different group number
• Can use the waitcomplete() command without a parameter to wait for all overlapped
operations running on nodes in the same group
Assigning groups
Group numbers can range from 0 (zero) to 64. The default group number is 0. You can change the
group number at any time.
Use the following code to dynamically assign nodes to a group.
Note the following:
• Each time the node powers off, the group number for that node changes to 0
• Replace N with the node number
• N represents the node number that runs the test scripts and the Lua code
• Each time the node powers off, the group number for that node changes to 0
• Replace G with the group number
-- Assigns the node to a group.
node[N].tsplink.group = G
Reassigning groups
Use the following code to change group assignment. You can add or remove a node to a group at
anytime.
-- Assigns the node to a different group.
node[N].tsplink.group = G
Running parallel test scripts
You can send the execute() command from the master node to initiate test script and Lua code on
a remote node. The execute() command places the remote node in the overlapped operation state.
As a test script runs on the remote node, the master node continues to process other commands in
parallel. Use the following code to send the execute() command on a remote node.
Note the following:
• The N parameter represents the node number that runs the test script (replace N with the node
number).
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