writing unique to the digital port

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• Individually control the digital ports

  Hello

  I'm getting a weird behavior when I run the VI attached on my computer out of ports digital test/control individually. I have not tested on real hardware because it is not available at this time.

  When the code is executed, the output pins are beginning to count gradually immediately (binary counting). Activation of the input pins has no effect which is contrary to the wide of the goal.

  It seems to me that the DAQmx function is one that behaves badly, but I don't know why. All I want to do is activate different ports return specified by my selection.

  Could someone please tell what I am doing wrong?

  Thank you

  It is because you are using a simulated device.  Readings are just the model of metering for digital ports.  Once you get real hardware, it should work the way you expect.

• How can I get the digital power meter?

  How can I get the digital power meter?

  I use a method similar to the example below to measure the market factor using the inputs of a multifunction data acquisition meter.  If the duty cycle is 0% or 100% for a given period, DAQ reading times out and returns an error.  In this case, I would get the digital state of the counter of entry so I can put as cycle to 0% or 100%.  I want to do it without knowing the digital port and line the entrance of counter... for example I would like to continue referencing DAQ/ctrX since I already have this information.

  The application uses an M series: PXI-6229 DAQ and LabVIEW 2011 to make a system customized for VeriStand.

  https://decibel.NI.com/content/docs/doc-12396

  For the moment I wired the block diagram to add a case structure to check the meter ID and string constants to set the identifier of digital input, as they share the physical connection.  As much as I can say that makes the specific code for the PXI-6229 (or any DAQ with only two counters that share connections with p2.1 and p) 1.4

  I have attached the VI sub.

  When the device is used with a different data acquisition, I can add the connection and/or separate control.  Looks like at least one will be necessary given that the meter can only detect the edges... I think it was the piece of information I needed.

  Thanks for your help!

• Unforeseen event, captured by the structure of the digital change notification event

  Using the specific or similar to http://decibel.ni.com/content/docs/DOC-2280 code (change digital notification.vi) I'm observing behavior unexpected, but coherent structure of the event. The structure of the event capture an event, the first time data is received in the structure of the event; even if there was no change in the digital port assigned. After this initial unexpected event, the structure of the event behaves as expected.

  I just wanted to know if someone had a glimpse of it. What is the task of detection of change this event to initialize?

  In this case, you would have to ignore the event first, which in my opnion is valid because it reserve no value to a value.

• simultaneous monitoring of the digital input lines when executing digital writing tasks

  I'm writing a multithreaded application in C on Windows 7, using the 9.6 DAQmx API and device USB-6509. This requires that we constantly monitor several lines on the 6509 for entry, digital using the change of the device detection feature. You must also write the digital output without having to stop monitoring the input rows. It is very important that the input rows be monitored continuously for the duration of the project.

  In the DAQmx manual reading, it seems that it is impossible to make a digital reading as well as a digital writing occurs, even if these tasks are performed in different threads. (The same I understand, that it is impossible to have several tasks of digital entry running simultaneously.)

  It seems that it would be possible to launch the task for reading (configured with the change detection), to pause playback, start the writing task, pause the task of writing, and then re - start the task of reading. But - and this is the important part - for the duration of the writing task is running, is it possible to configure it to the task of reading will always monitor the lines, even if it's just stores the data in the buffer for these periods? The key is that the data will be lost.

  Thank you

  Danielle

  Each channel is independent. If you can get the input data that you export a value. You need not make a break each task. The two tasks are parallel.

• Need help on the use of the PCI-6221 and c# to control three digital Port and an analog of entry

  I need to send the digital output at three ports and then read an analog input voltage using the analog card PCI-6221.

  I did a c# program to fight against it. I built four tasks altogether. Three tasks for three digital output ports and a single task for analog input.

  How can I reduce the time?

  Using my method, to 3.3ms in total. And it's slow.

  I can build one task for three ports?

  What is the best way to the control task to reduce the time of communication with the PC?

  Is that possible to save a lot of analog reading entry in the memory of the DAQ hardware and then read it all together from the computer in order to reduce time consumption?

  1 million thanks!

  Hello

  Hi Jin,

  To answer your questions, Yes, you are able to configure a task of digital output to use three output ports and PCI-6221 has a buffer of memory FIFO aboard 4095 samples.

  I would like to direct you to the example of NOR-DAQmx for c# files located in the following location on your computer

  C:\Documents and Settings\All Users\Documents\National Instruments\NI-DAQ\Examples\DotNET2.0

   

  Here, you will find predefined examples in c# that should give you a good idea of how to go about architecting your code to achieve the results you need.

  There is also a useful help file which you will find by navigating to Start > all programs > National Instruments > NOR-DAQ > help of NOR-DAQmx .NET Framework 2.0

  I hope that this answer is useful.

  Best regards

  Steve H

• help... I can't find the link in creative cloud to download the digital edition of unique app edition.

  help... I can't find the link in creative cloud to download the digital edition of unique app edition. I am a member creative cloud. Where did this app listed on the page creative cloud?

  Suz

  Tools DPS are buiilt in InDesign CS6 - Folio overlays and Folio Builder. You can download the latest updates of these tools in InDesign by going to help > updates or downloading updates of http://www.adobe.com/downloads. Remember that you need a Mac to create an application. Here is the step by step guide that will help you create your app: http://help.adobe.com/en_US/ppcompdoc/Step_by_step_guide_to_dps_se.pdf

• The output on my Macbook Pro is not giving me the drop-down list, & happens either in the port of the helmet or digital port and neither one is what I need. I tried turning off the computer and hold "Shift"' Control', 'Option' with the power-o ".

  The output on the sound output box has no drop downs. The audio output suddenly disappeared and when I went to the 'exit' sound in 'sound preferences' the only thing that would show was the headphones.  After that I tried a couple of things suggest that 'Helping Apple', sometimes in digital form & everything that happens you can't change for something else.  Things I've tried suggested by Apple press help were the "Shift control option buttons & button / stop at the same time."  or press the Option, the command, the P & R key as soon as possible after you have pressed the button On.  Hold down until after the second gong during a manoeuvre.   This did cause the digital option, but none of these 2 is the one I need.  Help

  Perhaps, it would be useful to know what that is exactly the one you need. Are get you an external speaker output or anything like that. Also, it would be useful to know the operating system you are using.

• The use of DAQmxWriteDigitalScalarU32 for write channels share the same ports?

  Hello

  I have a USB-6509 and NOR-DAQmx installed 15.5.1. Using the ANSI c api.

  Is it possible to create several independent channels that use different lines of the same port?

  DAQmxCreateTask("",&th1)

  DAQmxCreateDOChan(th1,"Dev1/line0:4","",DAQmx_Val_ChanForAllLines)

  DAQmxStartTask (th1)

  DAQmxCreateTask("",&th2)

  DAQmxCreateDOChan(th2,"Dev1/line5:9","",DAQmx_Val_ChanForAllLines)

  DAQmxStartTask (th2)

  ....

  and repeat for the following strings:

  Dev1 / line0:4
  Dev1 / line5:9
  Dev1 / line10:14
  Dev1 / line15:19
  Dev1 / line24:28
  Dev1 / line29:33

  So I can use DAQmxWriteDigitalScalarU32 to write to each task independently?

  for example:

  DAQmxWriteDigitalScalarU32 (th1, 1, 10, 0 x 1, NULL)

  DAQmxWriteDigitalScalarU32 (th2, 1, 10, 0 x 2, NULL)

  DAQmxWriteDigitalScalarU32 (th3, 1, 10, 0 x 3, NULL)

  ...

  DAQmxWriteDigitalScalarU32 (th6, 1, 10, 0 x 6, NULL)

  These tasks will interfere with each other because they use the same port, but are assigned different lines?

  If this isn't the case, I bits to the data, if the task/channel does not start at the Px.0 line?

  Thank you!

  Yes, as long as you use the same line on different channels, they must not interfere with each other for this reason, you can create a channel by line if you wish

  The reference to using the DAQmxWriteDigitalScalarU32 function:
  "A sample of the integer unsigned 32-bit unique, wrote to a task that contains a single digital output channel. "Use this format for devices with up to 32 lines per port.

  http://zone.NI.com/reference/en-XX/help/370471AC-01/daqmxcfunc/daqmxwritedigitalscalaru32/

  So yes, the DAQmxWriteDigitalScalarU32 can write on each task independently

• Several Applications using UDP Multicast Open (read only) on the same port

  Hi all

  Currently, I am trying to build a system that has the following architecture:

  RF Server = "1-9 A/D '-> «UDP Multicast (write-only) 1-9"»

  Workstation operator = "QTY (N) Data Display Apps all need independently to access one of the 9 UDP multicasts at a time.

  Essentially, I have 9 items of antenna that all digitized and distributed via UDP separate multicast address and port. On the receive side I need to be able to have the N number of data display applications where everyone can select the antenna element he wants to get data from. My current goal for N is 7 and the worst case for the data rate is 3.75 MSps IQ rates on each display.

  My question is whether or not it is possible to have several "UDP Multicast Open (read only)" on the same port but one by application Data Display? Also, are there limitations with this.

  On my local machine I tried a bit with the example 'UDP Multicast Sender.vi' and "UDP Multicast Reciever.vi". I created a "UDP Multicast Reciever2.vi" as another application that listens on the same port/Multicast address as the original receiver. No errors are thrown when you run the receivers and both receivers get the data string sent by the sender at the same time. Can I send data/a. 'PC'-> 'Router Ethernet'-> 'PC with receiver UDP N' reliable evidence? If so, that's fine, because it would be relatively easy to implement. BTW, I do not fear with occasional loss of data what is happening with UDP.

  If this does not work, I am also curious to know which deals with data deduplication. For example, two applications by subscribing to the same Multicast address and port does the router send two copies (which increases network traffic)? Or, the Windows operating system get a single UDP packet to the port and replicate in two independent applications?

  Below (or attached) are the two methods I thought. If multiple readers of UDP does not work so I thought I'd do a DataSocket "Data Distribution layer" between the incoming UDP sockets and display data on the workstation applications. This would add a bit of memory/processor to the PC workstation, but I know the DataSocket server of NOR can handle a sender unique multiple receiver architecture.

  

  

  Thank you

  Tim S.

  Hi Tim,.

  The number of concurrent applications, get data on the same port UDP will probably be a limitation of the OS as well. If I had to guess, I would say that 7 of the applications should work correctly. In fact, the memory/CPU bottlenecks are probably the limit on how many simultaneous readers we have, especially since the capablities of PC hardware differ from one computer to the other. I doubt that the OS has a strict limit.

• How to write a single line instead of the entire port?

  Hello

  I followed the example for writing to the digital line as follows

  int taskHandle;

  given int [8];

  char linename [] = "" dev2/port0 / line0:7 ";"

  DAQmxErrChk (DAQmxCreateTask ("", & taskHandle));

  DAQmxErrChk (DAQmxCreateDOChan (taskHandle, linename, "", DAQmx_Val_ChanPerLine));
  DAQmxErrChk (DAQmxStartTask (taskHandle));
  DAQmxErrChk (DAQmxWriteDigitalU8 (taskHandle, 1, 1, 10.0, DAQmx_Val_GroupByChannel, data, NULL, NULL)); Here the data have 8 digits
   
  Error:
  SetWaitCursor (0);
  If (DAQmxFailed (error)) DAQmxGetExtendedErrorInfo (errBuff, 2048);
  If (taskHandle! = 0)
  {
  DAQmxStopTask (taskHandle);
  DAQmxClearTask (taskHandle);
  }
  If (DAQmxFailed (error)) MessagePopup("DAQmx Error", errBuff);

  The example above shows how to write 8 binary to 8 lines, but how to write only one line? I try the following code, but it does not work

  char linename [] = "dev2/port0/line 2;

  ...

  DAQmxErrChk (DAQmxWriteDigitalU8 (taskHandle, 1, 1, 10.0, DAQmx_Val_GroupByChannel, & data [2], NULL, NULL)); Here the data have 8 digits

  The data format for the DAQmxWriteDigitalLines() function will do exactly what you want.

  The data format for the DAQmxWriteDigitalU8() function is a full port (even if you do not have a value of a harbour full of lines in your task).

• How can I get multi channel audio via the HDMI port on an early 2015 MacBook Pro?

  I try to get the 7.1 audio channels to flow from my MacBook Pro to a cinema set up. The display works fine now I plug the HDMI in however the sound still Mac speakers. I checked the settings and no HDMI output is available. An airtime option is available, but that returns only two channels as a maximum to the receiver. When I go to the configuration of the source on the receiver it receives video at 1080 p 60herts however it is specifically stated No Audio from the Source.

  Also, I have connected my iPhone 6 s more using an Apple through the same HDMI cable adapter and it works perfectly. We also use HDMI with our PS4 occasionally and it works perfectly, even with the 3D.

  Thus, the MacBook Pro is early 2015 with an i5, the receiver is a Harmon Kardon AVR 2700 (we run 7.1 channels of this) and we are connecting via the HDMI port through a 50 ft HDMI before. The receiver sends the audio to a projector with 1080 p 60 hertz if it changes anything...

  Also if it helps the receiver supports dts - hd master audio decoding, Dolby True HD/Digital Plus decoding, HDMI 1.4 (HDMI is compatible 2.0), as well as multi-channel input and PCM and linear PCM.

  I use a "Behringer UCA202' audio device I bought on amazon.com for only $29.

  It works very well for the audio 5.1 or 7.2. Works connect optical toslink. Just plug it into a usb port on your Mac and a cable optical toslink to your AV receiver.

  My Yahmaha 7.2 audio/video receiver is measuring process the digital signal in THX, DTS, Dolby digital Pro logic, a cinema, etc.

  

• Using the Serial Port on the HP 50 g graphic calculator

  Hello world

  I have another question. I want to use the Serial Port on the HP 50 g to connect with another device. The device is called the MFJ-1214PC. What it does is to accept the text and commands through a 9-pin serial Port and converts the text in a Code Morse/RTTY sound audible. It also decodes Audible the Morse Code and RTTY radio signals and displays them as text on your computer. The program that controls the MFJ-1214PC was originally written for an IBM PC for the MS-DOS operating system. The HP 50 g graphic calculator meets the system requirements for the simplest version of the program. I was wondering if there is an MS-DOS emulator written for the HP 50 g, which would allow the HP 50 g to become the computer in this case, or if the program could be rewritten and brought to the HP 50 g. If it could be rewritten, programming language what do you think would be better suited to this type of application (if it is even possible?) or UserRPL, SystemRPL or Assembly. Don't forget that I'm a complete newbie with the HP50g and have never programmed with it yet. I'll include the manual of the MFJ-1214 PC as an attachment so that you won't have to look for him. Thank you in advance for your help!

  ~ Zekelegge ~.

  I understand (from my brief overview) out of the box-MFJ-1214PC, this offer box decoder output series computer.  The computer (50g in your case) will have the software to read message series and then convert that to an output for display.

  BartDb gave you the right answer.

  A serial cable with the correct speed level and reversing lever to manage as well as the 50G has a RS-232 signal to the outside world is the ideal solution.

  However, make sure that the output of the decoder box series package can be understood by the 50 g. aud, bits, etc.   (you have the set-top box manual, so you'll have to look that up)

  the streamsmart is not an aggregator of serial port.

  in other words, these connectors DIN of Qty 4 on the front do not accept series rs-232 input and send then to 50 G.

  I'm not an expert, streamsmart more info on these boxes is rare to find.  The probes are even more rare.

  However, I know that the 4 connectors are for the analog-to-digital conversion in the probes.  The streamsmart works as a "data logger" in which he sees the input probe, the A/D converted, then sends it to the 50G (or a computer via the USB port).

  In addition to the solution of Bart, there was another named Tiwag forum poster who created a serial cable and displayed a schematic representation of the cable.  This information can be found here:

  https://groups.Google.com/Forum/?fromgroups#! searchIn/comp.sys.HP48/serial$20port/comp.sys.HP48/ltcane1jSOw/uHyw2Ti03kgJ

  to see an example of programming to use the serial port of 50G, you can reference the following hpcalc GPS data collection program.

  http://www.HPCalc.org/details.php?id=7105

  It is written in userrpl so can be crossed with the reference of users advanced for the translation of the syntax.

  It seems that the main routine of concern for the comm to the gps is in the file "GPS >.

• Satellite L650 - no signal on TV via the HDMI port

  Hello

  I have a problem with the HDMI port. I am not able to connect the L650 to my TV. There will be no incoming television signal. The TV port is correct because I can connect my digital camera without any problems. The HDMI port is not displayed in the hardware Manager. I don't use the version of windows 7 that has been installed originally. I formatted the disk and have reinstalled a different version of windows.

  Do I need a special driver to activate the HDMI port? I just installed the ATI catalyst driver. If you would like more information, I'll try to give them as soon as possible.

  Thank you very much for your help

  Hi song2.

  > have reinstalled a different version of windows.
  And what version of Windows you have right now?
  You have yellow exclamation points in the Manager of devices or unknown devices?

  In general there is no driver special HDMI port. If you connect your laptop to TV/monitor external, you must press the FN + F5 key combination to switch between monitors.

  Check it!

• Satellite C660: How to get the HDMI port?

  Hello

  Could someone tell me how to get hdmi on the laptop as the laptop has a hdmi port

  Thank you

  Hello

  But what C660-xxx you? Perhaps you could use a
  It is not possible to add arbitrary ports.

  Ports are part of the motherboard and if the laptop does not provide an HDMI port, so, you will not be able to use that :(

  Of course, you could use a device that would be to convert a digital video signal, but they are expensive and in my opinion not worth trying it s better to buy a laptop that would support the HDMI port instead of buy a converter for 200-$300