PXIe-4141 hardware timed 4- channel sweep

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.

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
Attachments:
Help PXIe-4141.png ‏250 KB

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Hi yma200,
Are you using a USB 9263? If so, this might be of help:
http://digital.ni.com/public.nsf/allkb/EC1968728E660B288625780700570D06?OpenDocument
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Hello,
I am trying to measure frequency using NI 9402 in NI cDAQ9178 chassis. I am setting the clock for my counter channel to be my chassis ai Sample Clock.
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Alright so I got everything working correctly in both C and LabVIEW code.
The problems is in fact with the first sample, as John_P1 suggested. You simply need to delay that first sample from being requested. It is simple to do this in software instead of hardware.
If you are using CVI, just add #include <utility.h> to the top of your .c file and then add a delay before your DAQmxErrChk (DAQmxStartTask(AItaskHandle)); line.
Comment out / remove the DAQmxSetStartTrigDelay(AItaskHandle,10); line, as it wasn't doing what we thought it would. (Hardware delay).
I added Delay (.05); to delay long enough for the full period of the input signal at 20 Hz.
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Go to Solution.
Attachments:
Hardware Timed Pulse Train Clock.jpg ‏102 KB

Hey Ryan,
A picture of the behavior you are seeing would be helpful. The NI 9411 should only be reading 50 bits every 1 ms.
It may not be possible to read 25 bits (do you mean 50 bits? 25 high 25 low) and push it to a queue without encountering an overflow error. If you take a look at the above code the digital input will receive 50 sample clocks every 1 ms. This is equivalent to acquiring 50 points every 1 ms which is an acquisition speed of 50 samples/1 ms=50 kHz. The read loop must keep up with the 50 kHz rate otherwise the buffer will overflow. In the above example I’ve set the read to pull 5000 samples (x) with the assumption that the loop will take less than or equal to .1 seconds (y). This yields a software acquisition speed of 50 kHz (5000 samples/100 ms). If the loop speed is faster than 100ms then the 10 seconds timeout on the DAQmx read will allow for the read to block so the FIFO may be filled.
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Regards,
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Product Support Engineer
ni.com/support

PXIe-4141 Calibration Error niDCpower version 1.8 ,"calibration function is not supported by the device."

Dear sir,
Nice to meet you.
When I running the PXIe-4141 Calibration Function "niDCPower Cal Adjust Voltage Leve.vi" in niDCpower version 1.8,
it will show an error "calibration function is not supported by the device."(false cae)
But if I run the PXIe-4141 Calibration Function "niDCPower Cal Adjust Voltage Measurement.vi", (true case)
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See the attachments.
My Equiptment list:
WinXP SP3
Labview 2011
niDMM 3.0.5
niDCpower 1.8
PXI-1073 case with 2 cards.
slot2: PXIe-4141
slot6: PXI-4071
Could someone tell me the solution?
Solved!
Go to Solution.
Attachments:
4141-cal adjust voltage level.JPG ‏203 KB
4141 manual cal_20130722.vi ‏46 KB

Update:
Error Code: xBFFA4A42
niDCPower Cal Adjust Voltage Level.vi<ERR>Requested calibration function is not supported by the device.
Status Code: -200445
See "voltagle level error.JPG"
And the same error for "niDCPower Cal Adjust Current Limit.vi".
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Attachments:
voltagle level error.JPG ‏15 KB
current limit error.JPG ‏16 KB

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Attachments:
DAQ_DOCUMENT.doc ‏23 KB
basic_loop3.vi ‏169 KB
The_Data_Generator.vi ‏30 KB

Hi Shiv,
Take a look at
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Phone (503) 620-3001
Fax (503) 620-6754
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mxi error.zip ‏334 KB

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error3.JPG ‏18 KB

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Attachments:
periodmeasure.png ‏6 KB

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PXIe-4141 hardware timed 4- channel sweep

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