PXIe-4141 hardware timed 4- channel sweep

[rabindra]

In the attached example of FET/BJT characterisation using hardware timed two channel sweep, for each gate voltage the drain values are sweeped.

If I understand the trigger settings correctly :-

For each drain value, V is applied and I is measured. So if there are 2 Vg values and 3 Vd values, the PXI fetches 6 Vd & Id and 2 Vg, Ig values.

To put it more bluntly,

seq start

 Vg = 3V Ig = .....

seq start

Vd = 0.5,Id = ....(Ig = ?)

Vd = 1,Id = ....(Ig = ?)

Vd = 1.5 Id = ....(Ig = ?)

seq complete

Vg = 4V, Ig = ......

seq start

....

seq complete

What if we wish to measure Ig for all iterations of Vd as well ? Can guess to configure 'MeasureWhen' trigger of Gate to 'SourceComplete' of Drain. Is that doable/feasible in sequence-source-mode ? Or one should apply each value in single-point-source-mode. Wish to iterate 5 values in each 4 cascaded channels at the end.

[Hossein128]

Hello,

Thanks for your posting in this forum. To assist you better, I need your code if it is possible to send it to me.

Hear from you.

regards,

[Hossein128]

Hello,

　

Last time I asked for your code but I think that you need more information about the hardware configuration for your PXI. That is why I found some material in the help file of the PXIe-4141 which is given below.

I hope this helps!

•Once the sequence runs Sequence Loop Count times, the operation is complete, and NI-DCPower generates the Sequence Engine Done event, as shown in the following figures.

The following figure illustrates a sequence with the niDCPower Measure When property is set to Automatically After Source Complete or the NIDCPOWER_ATTR_MEASURE_WHEN attribute is set to NIDCPOWER_VAL_AUTOMATICALLY_AFTER_SOURCE_COMPLETE.

The figure could you find in the screenshot.　

You can find a screecshot in the attachment.

　

Regards,

Hossein