How two generations different wafeforms on ao channels USB-6353

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  Please help me to do this.

  You can add the cod file in the section of the alx file

• Generation of series in multiple channels

  Hi forum, I need to ask a few questions. Any help is appreciated.

  (1) I need help with the generation dynamic series in several channels. Here, we can see how the dynamic data set generated by a single channel. But I can't find anywhere, how to generate several series signals in multiple channels.

  (2) what is the limit for this generation series? I think it depends on the material, but I don't know, what is the limit. My hardware is SMU-6544.

  (3) it is possible to generate different signals in different channels using scripts? and to start the production in these channels at the same time? the example given in the script generation labview is unfortunately only for the generation of a channel.

  Thanks in advance,

  Kind regards

  Yan.

  Hi Yan,

  Produce on several channels with multiple data is difficult without a tool to view the data, or series of each channel bitstream concatenated into a software ADE and transposed before be downloaded into memory.  To make Visual things here, I'll assume that you want to generate a pattern of 3 bits on sample of channels 0, 1 and 2 is 8 wide.  Assume the following models of the series bit for each channel:

  ch 0: 0101 1010

  CH 1: 0000 1111

  CH 2:0100 1101

  So the question now is, how do you load this in the SMU-6544(or any other HSDIO hardware)?  Of the two options, you can use Digital Waveform Editor (NEWS) to create visually and save to a file type HWS then load a DJ using the API HSDIO.  It is the easiest in my opinion.

  The second way is construction examples of data based on a basic example.  I want to say is you take it all binary streams and built a 2D table so that it looks like:

  01011010

  00001111

  01001101

  An array of 3 x 8 and then transpose the table that turns into:

  000

  101

  000

  100

  111

  011

  110

  011

  Here you can see we have 8 lines, each line is a sample, and in the form of U32 read in decimal, you get 0, 5, 0, 4, 7, 3, 6, 3.  That's what you can load into our niHSDIO U32 function write a waveform.  I hope you can see how this translation occurs and how it looks like in terms of load on the jury.  Each sample usually contains data for all channels, where each bit in the U32 is one of the 32 channels available on your device.  So if you want to write a '1' on Channel 5, you would load a value of 0000 0000 0000 0000 0000 0000 0010 0000 in the form of sample, where the 5th bit is 1 and all the other bits 0.  In decimal, you would write '32' value.

  With regard to the limitation of the size of series, if your flow rate is slow enough you can disseminate and make an almost endless stream, but assuming that you are running at the maximum rate, your series of waveform size is limited by the size of your on-board memory.  Since each sample generation is 32-bit, which is 4 bytes for example, if a memory size of 32 MB will correspond to 8MS bitstream series max.

  For any questions or comments are welcome.  Thank you.

• generation of functions to create channels of AO

  I'm trying out a sinusoidal signal through a USB-6211 using this task Create Channel. I can't find a single example of using this function once the task has been created. All the 17 examples provided by OR use the adjustment of the tension of the AO create and must use an external function generator. Examples exist on how to use this thing? List of specifications of USB - 6211 BTW ' AO waveform modes:

  "Non-periodic waveform.

  "Periodic regeneration mode waveform of FIFO aboard"

  'Regeneration of periodic signals of buffer host, including the dynamic update'

  I don't know what the previous alternatives that seem to indicate that it is capable of producing waveforms, unlike other queries that came during my search for previous question.

  Hi walter donovan,.

  Only two devices support .vi DAQmx Create Channel (AO-FuncGen): NI ELVIS II and NI ELVIS II +, which have a function dedicated to the hardware level generator. You cannot use the channel type of the generation of AO functions with any other device. Sorry for the confusion.

  Brad

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  How can I use two accounts different iCloud with Photos of Yosemite OSX? For example... My wife and I have iPhones with iCloud different accounts and share a MacBook Pro, which use us her iCloud account. We want to be able to use the photo stream to upload our photos on our iPhones to the Photos on the MacBook Pro app. Thank you.

  I don't think there is a way to link the two accounts iCloud in photos.app library.

  However, my partner and I are in the same situation as you and your spouse: two phones, a MacBook Pro (MBP) and the need to share the photos with others and to optimize the space of our digital camera shots.

  In short, we use the following:

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• How to control the sequence of scanning channels in DAQmx

  I have an application written for the traditional DAQ C API that I need to convert to use DAQmx drivers. The application uses the SCAN_Setup function to create a canal complex analysis sequence of taste effectively at different rates on each channel and to vary the rate on one of these channels. The following example shows the sequence of sweeping strings passed as an argument to the call of SCAN_Setup chanVector:

  0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 3 0 1 0 2 0 3 0 1 0 2 0 3

  The sequence of I is synchronized with a waveform of the AO and is designed to measure response on AI0 from an external system to this waveform while taking other measures from other sensors at the same time: AI1, 2 and 3. This sequence provides a higher AI0 at the beginning of the wave sample rate.

  How can I do this using DAQmx?

  I tried to use a loop to make several calls to the DAQmxCreateAIVoltageChan function, one for each sample in the vector of channel, but the result does not seem to read the right channels in the correct order.

  Is there a problem with the addition of several times the same physical channel in the same task?

  Thanks for your help.

  Hi TradLuddite,

  Material of the series E have a specification 'size of the memory configuration' of '512 words', which means that they can sweep up to 512 unique physical channels. I would wait until a depth of 1000 causes the DAQmxStartTask() return an error. However, it may be possible to exceed this limit, if the scanlist consists only of the groups of the same size of the identical physical channels (where the entry terminal configuration limits are the same within each group), because the material is supported by a very simple form of compression scanlist. Material of the series M have a specification corresponding loads "scan memory list" 'entries of 4095', to a depth of 1000 would not be in this limitation on the M series.

  Definition of the data property of transfer mechanism is probably not necessary. DAQmx chooses a default value for this property, depending on the type of device and the type of calendar sample property. The use of DAQmxCfgSampClkTiming() to set the calendar type of sample to "Sample clock" will result in a mechanism for transfer of data by default "DMA", "USB in bulk" or "Pauses" depending on the type of bus (PCI/PXI, USB and PC Card, respectively). Not configuration synchronization (or by calling DAQmxSetSampTimingType (taskHandle, DAQmx_Val_OnDemand)) will result in a mechanism for transfer of data by default "set of I/o.

  What DAQmxRead() function are you? You specify DAQmx_Val_GroupByChannel or DAQmx_Val_GroupByScanNumber for the fillMode parameter? Have you checked the value returned in * sampsPerChanRead?

  Only repeated channels return incorrect data? It works when you repeat all the channels? Otherwise, maybe the terminalConfig parameter does not correspond to how signals are wired, you have ghosting, or there is a problem with the wiring for signals. It still works in NOR-traditional DAQ?

  Brad

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