Trigger PXI6571 to PXI4162

[EdTorresJr]

Hello, 
I am working on to trigger SMU to start current capture by a pattern burst? Would you be able to give me sample on how to do this. 

[santo_13]

Please elaborate more, do you want to capture current at certain locations during a pattern burst of profile the current through the whole pattern burst?

[EdTorresJr]

Hello,

Thank you for responding. Correct. What I am planning to do is if there is a opcode that I can use on digital pattern editor such that when I burst a pattern I can automatically send a PXI trig measure trigger to SMU to start current capture. The reason for this is I need the exact timing and I am capturing really small current pulse. Just wondering if there are examples. 

[santo_13 · Accepted solution]

Here is the high-level concept. See if you can translate this into code,

For this example, let us use event0, PXI_Trig0 and 6571's alias be DPI_6571

• On the NI-Digital side,
  • Use `pulse_signal(event0)` opcode in the vector of the digital pattern
  • Use NI Digital API to configure Export Signal to route the patternOpcodeEvent0 to PXI_Trig0
• On the NI-DCPower side,
  • Configure the measure trigger source to `/DPI_6571/PXI_Trig0` using Configure Digital Edge Measure Trigger
  • Configure MeasureWhen property to `OnMeasureTrigger` using the property nodes
• Order of execution
  • Configure the SMU, initiate to start supply
  • Configure the 6571 and burst the pattern
  • After pattern execution completion, use the Fetch Multiple VI to read the measured samples from buffer
  • You need revert back the MeasureWhen property of SMU for your regular onDemand measurements to work or it will look for a trigger to measure

[EdTorresJr]

Hello,

Thank you for your response.

Been trying this event opcode but your explanation made it clearer. Initially had issue running in multisite but realized I just need single PXI trigger for broadcast. 

Appreciate you help!

[santo_13]

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@EdTorresJr wrote:

Hello,

Thank you for your response.

Been trying this event opcode but your explanation made it clearer. Initially had issue running in multisite but realized I just need single PXI trigger for broadcast. 

Appreciate you help!

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Even if it is multi-site, all that it matters is the number of 6571 cards involved as there is one pattern engine per card and the triggers are for the pattern engine and not related to the site. Pattern Engine is the brain that understands the pattern, executes it and scale it for multi-site.

[EdTorresJr]

Noted on this and thank you!

[EdTorresJr]

Do you have recommendation how to do it in PXI6556 with PXI4143. We also would like to send measure trigger to SMU from HSDIO