PCIe-1433, extension boards and multiple trigger outputs

Hi All,
I am using two cameras and three LED lighting bars to take images of fabric from a conveyor. The cameras are interfaced with an NI PCIe-1433 card which has two extension boards attached to it. To synchronise the triggering of both the cameras and the LEDs I am using PhaseA of a quadrature encoder signal located on the conveyor. I need to produce six pulses to provide the external triggers at various points of the PhaseA waveform.
I understand that the PCIe-1433 only has 1 external output that can be used as a trigger although with the extension board this increases to 3. I am assuming that even though I have two extension boards on the same PCIe-1433 card I am unable to use the additional 3 external outputs, which would give me the total of 6 I require?
Any guidance would be appreciated
Kmor

Hi Kmor,
Can you tell me what extension boards you are using?
Fouad

Similar Messages

Help! data manipulation for high speed streaming to disk from multiple boards and multiple channels

I am using Labview 7.1 and have been trying to capture data from 12 channels simutaneously sampled at 2MS/s each and streaming to disk for up to a minute or more. The hardware I am using is 2 x PXI 6133 S series boards with a MXI4 link to a Pentium D 2.8 Ghz machine with 2Gb ram. I have 2 sata drives set up in a raid 0 configuration which should give me hard disk write speed faster or equal to the MXI-4 transfer speed.
I have first started off by using the example code "multi device sync - analog input- cont acquisition" which has enabled me to sync the two boards and sample at the required speed.
To stream the data to disk, I have first merged the data from each board together to save it to one file. I have tried using the storage vi's but I end up with a Daqmx read error (trying to read data that is no longer available). I have played around with the read data size to the point that I either get a insufficient memory error, or I get the "trying to read data that is no longer available" error. I have also tried using the file IO blocks with some success and have found that I have been able to stream to disk only if I configure the daqmx read block to output the data in "raw 1D I16" format and plugging it into the file-write block. In doing this, I have noticed that using multiple channels on one daqmx read task, I will get all the channels in one 1D array rather than a 2D array organized by channels. This makes it messy to read at the end of this, and I also don't want to write another vi to separate the channels, due to the high chance of getting the data mixed or messed up if I happen to change the number of channels on a board
Is there a cleaner way of streaming this data to disk and keeping the channel data separated from each other?, and/or is there a better way to capture and handle the data I need?
I have attached the vi which I have got to consistantly work streaming to disk using the raw 1D I16 format.
Thanks in advance to anyone who can help.
Attachments:
multidevicesync_analoginput_streamtodisk.vi ‏197 KB

Hi,
i can suggest following
Refer to an example VI called as "High speed data logger.VI" in conjunction with "High Speed data logger reader.vi" in Labview examples. Alhrough the logger might be in Tradiditional Daq format, it can be quite easily converted to Daq Mx format to store data in Binary (I32 format) . I have used this for many of my applications and i have found that the data retrieved does not have any "messups".
Why not keep a seperate file for each card? This way, you do not have to load your application with extra process. You only have to acquire and save. After saving in Binbary format, you can retrive it offline, convert it to ascii format and merge the data files of various cards to get one consolidated ascii data file.
hope this helps
Regards
Dev

CMS crash with core files and multiple report output generation

Happy new year to everyone,
Our BOXIR3.1SP6FP2 env has recently started behaving weirdly by triggering multiple output to users inbox and email notification out of scheduled reports. Also we have noticed the CMS crash with core file (almost 4GB) generation at the time of multiple report output.
Most of the times, CMC crashes and recycles itself. At few times, CMS services alone went shut down.
OS details: RHEL 5.5, 32 GB RAM, 8 core processor on each of the clustered node, Oracle 10GR2.4 CMS DB server, 11GR2.4 oracle reporting DB server and oracle 11.1.0.6 client.
2015/01/21 23:54:37.946|>=| | |28123|1534131088|{|||||||||||||||DBQueue::Read
2015/01/21 23:54:37.946|==| | |28123|1496185744|
|||||||||||||||(OracleStatement.cpp:156) Prepare: SQL: SELECT ObjectID,
Version, LastModifyTime, CRC, Properties FROM CMS_InfoObjects6 WHERE ObjectID
IN (1004050) ORDER BY ObjectID
2015/01/21 23:54:37.946|==| | |28123|1496185744| ||||||||||||||(OracleStatement.cpp:183) Prepared statement Execute
2015/01/21 23:54:37.965|==| | |28123|1496451984| |||||||||||||||SResourceSource::LoadString 50293
2015/01/21 23:54:37.966|==| | |28123|1496451984| |||||||||||||||SResourceSource::LoadString Unknown exception in database thread
2015/01/21 23:54:37.967|==| | |28123|1496451984| |||||||||||||||SResourceSource::LoadString 33007
2015/01/21 23:54:37.967|==| | |28123|1496451984| |||||||||||||||SResourceSource::LoadString CMS is unstable and will shut down immediately. Reason: %1...
2015/01/21 23:54:38.506|==| | |28123|1496185744| |||||||||||||||(OracleStatement.cpp:156) Prepare: SQL: SELECT ObjectID,
Version, LastModifyTime, CRC, Properties FROM CMS_InfoObjects6 WHERE ObjectID IN (1009213) ORDER BY ObjectID
2015/01/21 23:54:38.506|==| | |28123|1496185744| |||||||||||||||(OracleStatement.cpp:183) Prepared statement Execute
2015/01/21 23:54:38.512|==| | |28123|1455592672| |||||||||||||||(sidaemon.cpp:549) SUNIXDaemon::run: server restart flag is 1..
2015/01/21 23:54:38.513|==| | |28123|1455592672| |||||||||||||||(sidaemon.cpp:552) SUNIXDaemon::run: in abort ...
2015/01/21 23:54:38.513|==| | |28123|1455592672| |||||||||||||||(sidaemon.cpp:555) SUNIXDaemon::run: doing the WithAbort case ...
2015/01/21 23:54:38.520|==| | |28123|1496185744| |||||||||||||||(dbq.cpp:1357) DBQ: Time required to read 1 objects: 20.000000 ms
Thank you,
Karthik

Hi Denis,
I'm trying my best for the last few weeks to understand the core issue along with SAP however it is still a mystery.
>Ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 270335
max locked memory       (kbytes, -l) 32
max memory size         (kbytes, -m) unlimited
open files                      (-n) 1024
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 10240
cpu time               (seconds, -t) unlimited
max user processes              (-u) 270335
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited
Below is the observation as part of troubleshooting:
1. CMS breaks at threshold of 3.9 G.
2. CMS DB sits in a different Linux server than BOE server.
3. All core files were generated by boe_cmsd process and are almost 4GB in size (same as max threshold which it breaks).
4. Shell script which I've added in the BOE servers shows that the CMS DB is available/connecting at the time of CMS crash.
5. SAP analysed the Core files and skeptical about the below lines.
     #3 0x58687b80 in skgesigCrash ()
      from /opt/oracle/product/11.1.0/client_1/lib32/libclntsh.so
     #4 0x58687e0d in skgesig_sigactionHandler ()
I'll continue troubleshooting with a hope to fix it at the earliest.
Thanks,
Karthik

How to Make FUNCTION to return multiple column and multiple row output

Hi All,
Kindly Share ur Idea;Thanks in Advance;
i Have Table Demo.
table DEMO:
id name
1 a10
1 a11
1 a12
2 b10
2 b11
3 ccc
and the function is like:
create or replace function (p1 number) return varchar2 as
vid number;
vname varchar2(20);
begin
select id,name into vid,vname from demo where id=p1;
return v1;
end;
this function returns output for id=3;
BUT,
i need output as (for input as 1)
vid vname
1 a10
1 a11
1 a12

A function returns a single datatype.
That datatype may be an atomic datatype (varchar2, number etc.) or it may be an object/record datatype, or even a collection datatype.
Where are you going to use this function? In PL/SQL or SQL?
If you are wanting to use it in SQL, then you would need a pipelined function e.g.
SQL> CREATE OR REPLACE TYPE myemp AS OBJECT
2 ( empno    number,
3    ename    varchar2(10),
4    job      varchar2(10),
5    mgr      number,
6    hiredate date,
7    sal      number,
8    comm     number,
9    deptno   number
10 )
11 /
Type created.
SQL> CREATE OR REPLACE TYPE myrectable AS TABLE OF myemp
2 /
Type created.
SQL> CREATE OR REPLACE FUNCTION pipedata(p_min_row number, p_max_row number) RETURN myrectable PIPELINED IS
2    v_obj myemp := myemp(NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL);
3 BEGIN
4    FOR e IN (select *
5              from (
6                    select e.*
7                          ,rownum rn
8                    from (select * from emp order by empno) e
9                   )
10              where rn between p_min_row and p_max_row)
11    LOOP
12      v_obj.empno    := e.empno;
13      v_obj.ename    := e.ename;
14      v_obj.job      := e.job;
15      v_obj.mgr      := e.mgr;
16      v_obj.hiredate := e.hiredate;
17      v_obj.sal      := e.sal;
18      v_obj.comm     := e.comm;
19      v_obj.deptno   := e.deptno;
20      PIPE ROW (v_obj);
21    END LOOP;
22    RETURN;
23 END;
24 /
Function created.
SQL> select * from table(pipedata(1,5));
     EMPNO ENAME      JOB               MGR HIREDATE                    SAL       COMM     DEPTNO
      7369 SMITH      CLERK            7902 17-DEC-1980 00:00:00        800                    20
      7499 ALLEN      SALESMAN         7698 20-FEB-1981 00:00:00       1600        300         30
      7521 WARD       SALESMAN         7698 22-FEB-1981 00:00:00       1250        500         30
      7566 JONES      MANAGER          7839 02-APR-1981 00:00:00       2975                    20
      7654 MARTIN     SALESMAN         7698 28-SEP-1981 00:00:00       1250       1400         30
SQL> select * from table(pipedata(6,10));
     EMPNO ENAME      JOB               MGR HIREDATE                    SAL       COMM     DEPTNO
      7698 BLAKE      MANAGER          7839 01-MAY-1981 00:00:00       2850                    30
      7782 CLARK      MANAGER          7839 09-JUN-1981 00:00:00       2450                    10
      7788 SCOTT      ANALYST          7566 19-APR-1987 00:00:00       3000                    20
      7839 KING       PRESIDENT             17-NOV-1981 00:00:00       5000                    10
      7844 TURNER     SALESMAN         7698 08-SEP-1981 00:00:00       1500          0         30
SQL> select * from table(pipedata(11,15));
     EMPNO ENAME      JOB               MGR HIREDATE                    SAL       COMM     DEPTNO
      7876 ADAMS      CLERK            7788 23-MAY-1987 00:00:00       1100                    20
      7900 JAMES      CLERK            7698 03-DEC-1981 00:00:00        950                    30
      7902 FORD       ANALYST          7566 03-DEC-1981 00:00:00       3000                    20
      7934 MILLER     CLERK            7782 23-JAN-1982 00:00:00       1300                    10
SQL>If you are using it in PL/SQL then just populating a collection datatype and returning that will do. Though you should question why you want to pass large amounts of data around like that first.
Explain your purpose and what you are intending to do and we can recommend the best way.
{message:id=9360002}

Z87 XPower Board and multiple Single video cards?

I'm lost and can't find an answer anywhere. I use 3 video cards to connect to 6 monitors but for some reason this mobo won't recognize any of my other cards except for the one in PCI_2 since that's wired to the CPU directly... I need to get the other ones working too how can I do this? I checked the CeaseFire switch and they're all set to "On" so they should be working, but alas they are not. Hopefully someone can help me figure out what I am doing wrong.
BTW, these are standalone cards, not crossfire or sli capable.

Quote from: XFM on 29-June-13, 10:27:36
Not that it make much difference to any of us but just out of curiosity why do you need that many cards and 6 displays?
I'm a multi-tasker. I'll have Adobe Premiere running on my primary display, After effects on a neighboring screen, browser in another, e-mail client in another, dreamweaver in another, and I have the final screen designated so I can fly through the files I need to find for easy drag and drop utilization. It's just the setup I like to use more than anything.
Anyway I got it to work finally in Slots 1, 3, & 7. After my last post I rebooted with no cards, added them into slots 1, 3, 5 and then magically the drivers were installed for them. I didn't do anything different which is why I am still a bit confused, but it is working now.
Anyway, time to troubleshoot my last issue. HDD in SATA slots 1-8 work fine but when I add drives to 9 & 10 my computer won't boot, it'll only show a flashing underscore. Kind of like the old issue where a WD external drive would do that on boot... but, anyway I can start a new thread for that if need be.

How Multisim, ELVIS 2+ Board, and Labview All Connect

My school recently obtained some ELVIS 2+ boards and I have been tasked with figuring out exactly what they can do and how we can incorporate them into the curriculum as part of my work study. Now I have all the basics down for building a circuit on the ELVIS, getting measurements and controlling inputs on the computer etc. I would like to delve deeper into what the full potential of this device is by integrating it with multisim and Labview. My question is, is it possible to construct a circuit (or partial circuit) in multisim and then send the output of said circuit to the ELVIS board where it could feed into an actual circuit. For example, could I build a voltage supply virtually in multisim, and output the voltage to a specific pin on the ELVIS board where I could wire it into my built circuit? Along the same lines, could I build a circuit on the board and send the output of the circuit to a program in Labview? Is this board capable for such things or is its connections to labview and multisim just used as a comparison tool for real life readings and simulated readings? What is the full potential of this board?

Hello,
Glad to hear about you work with NI ELVIS. The integration between ELVIS and Multisim is limited to running circuit simulations and then comparing results with the real circuit, in other words, you can compare simulated vs real measurements; this is a great approach to circuits education.
Now, if you want to have more control of the inputs/outputs available on NI ELVIS, then LabVIEW is the perfect fit. In LabVIEW you can use the NI ELVISmx Express VIs to configure settings for all the instruments. Furthermore, NI ELVIS is supported by the NI-DAQmx driver, therefore you can use the NI-DAQmx functions to acquire signals from the analog inputs, generate signals in the analog outputs, access the digital I/O and program general counter/timing functionality.
Visit the NI ELVIS & NI myDAQ Instruments and Applications community to learn more about the integration between ELVIS and LabVIEW; in this page you will find some ready-to-use applications.
Hope this helps!
Fernando D.
National Instruments

How can i use an ao card (pci 6723) to output data and to trigger an ai o acquire the data coming from the ao card?card (pci 6254) t

Hello
I am trying to perform AO (pci 6723) and to trigger my AO card (pci
6254) to read the data coming from the AO card. I am using LV7,1,
win2000.
Is an RTSI cable necessary or I can connect the trigger signals externally ?
I am using the LV example " multi function - synch ai-ao.vi" but i can't for some reason configure the trigger lines.
thank you in advance for your time.
Yiannis

Hello Yiannis,
If I understand you correctly, you want to synchronize your analog input and analog output that are started by a trigger on the analog input board. If you don't want to use the RTSI lines, your best bet is to export the AI Sample Clock and then read it in to the AO board. There is an example on ni.com called DAQmx - Synchronized AIAO Shared Clock. It appears to be having techincal issues so I have attached the example below. To export ai/sampleclock, use DAQmx Export Signal.vi after Get Terminal Name with Device Prefix.vi. Export Sample Clock to PFI3 (There are only connections between the sample clock and PCI3/4/8/9). Connect PFI3 on your AI board to PFI0 on your AO board (with a wire). Then change the source for the AO Timing.vi to Devx/PFI0. If you want to do triggering, stick the DAQmx Trigger.vi between the Timing property node and the DAQmx Start.vi on the AI task. I have shown how to do this in the modified version below. Please take a look at it and let me know if you have any questions. If you still get an error please take a screenshot of it and post to the forum. Have a great day!
Sincerely,
Marni S.
Attachments:
Synchronized_AIAO_Shared_Clock[Modified].vi ‏140 KB

PCI 6602:How can I use the digital lines of the board and in the same time to generate pulse train using a counter?

Hello!
My problem appeared when I tried to update my code from Traditional NI-DAQ Legacy to DAQmx.
I am using 2 counters (counter 5 and counter 7) from PCI-6602, to generate pulse train, and also the Digital I/O lines of the port 0 (the lines form 0 to 7). What I do in my application is that I am starting to generate the pulse train on the output of the 2 counters, and after that I am playing with the state of the digital lines.
In traditional there was no problem using the counters and the digital lines in the same time, everything was going perfectly, but in DAQmx this is not possible.
What happens: I start to generate pulse train on the output of the counters, no errors encountered, but when I try to modify the state of one line of the digital port the generation of the pulse train is stopped. This is happening when I start the task associated to the digital port.
My question is: it is possible to create a channel on the digital lines without altered the channels created for the counters?
Another thing what I manage to see using the "Measurement & Automation Explorer" and Test panels for PCI-6602, basically is the same thing, I generate pulse train on the output of the counter 7 and try to start a task on the digital line, but I get one error :
"Error -200022 occurred at Test Panel
Possible Reason(s):
Measurements: Resource requested by this task has already been reserved by a different task.
Device: Dev4
Terminal: PFI8"
Instead if I use the counter 0 or counter 1 to generate pulse train I don't encounter the same problem.
Which resources are used by the counters 2 to 7 from the PCI-6602 board and the counters 0 and 1 do not use?
Thank in advance for any replies!
Ciprian
Solved!
Go to Solution.

Hello Jordan, thank you for your reply.
I am sorry but I can not see or run your example, I don't use LabView, I use Visual C++ for developing.
Here is the code for generating the pulse train:
GeneratePulseTrain(unsigned long ulCount1, unsigned long ulCount2)
    short nStatus = 0;
    nStatus = DAQmxCreateTask("",&m_taskHandle);
    nStatus = DAQmxCreateCOPulseChanTicks (m_taskHandle, "Dev4/count5", "", NULL, DAQmx_Val_Low, 0.0, ulCount1,ulCount2);
    if( bTriggerMode == true) // if hardware trigger is enabled
       nStatus = DAQmxSetTrigAttribute (m_taskHandle, DAQmx_ArmStartTrig_Type, DAQmx_Val_DigEdge);
       nStatus = DAQmxSetTrigAttribute (m_taskHandle, DAQmx_DigEdge_ArmStartTrig_Edge, DAQmx_Val_Rising);
       nStatus = DAQmxSetTrigAttribute (m_taskHandle, DAQmx_DigEdge_ArmStartTrig_Src,"Dev4/PFI17" );
   //set the internal timebase
   nStatus = DAQmxSetCOCtrTimebaseSrc(m_taskHandle,"Dev4/count5","20MHzTimeBase" );
   nStatus = DAQmxStartTask(m_taskHandle);
    return nStatus;
And the code where I try to set the digital line:
SetChannelState(short nState)
    short nStatus = 0;
    uInt8 wrtBuf0[1]={0};
    nStatus = DAQmxCreateTask("",&m_taskHandle);
    // Configure line as output
    nStatus = DAQmxCreateDOChan (m_taskHandle, "Dev4/port0/line0", "", DAQmx_Val_ChanPerLine);
nStatus = DAQmxStartTask(m_taskHandle);
    wrtBuf0[0] = nState;
    nStatus =DAQmxWriteDigitalLines (m_taskHandle, 1, 0, 0, DAQmx_Val_GroupByScanNumber , wrtBuf0, NULL, NULL);
    nStatus = DAQmxWaitUntilTaskDone(m_taskHandle,10);
    nStatus = DAQmxStopTask(m_taskHandle);
    nStatus = DAQmxClearTask(m_taskHandle);
    m_taskHandle = 0;
    return nStatus;

How to connect external trigger PCIe-1433?

I am having an issue getting the external trigger to work using a cameralink camera, a PCIe-1433 card and a signal generator. The signal generator is connected to the SMB connector on the 1433 card and is providing a 20 Hz signal with a 20ms pulse width at TTL voltages (0-4V). From memory, we are using the MAX software and under the Acquisition tab I have CC1 set to external, however the camera is not receiving this external trigger.
I've attached a rough diagram of our setup.
What could my issues be? My thoughts are:
1) Are there other settings in MAX I need to ensure? I know the SMB connector can be an input or an output. How can I make sure this is set to input?
2) My input signal is 0-4V which is TTL, but does the signal need to be 0-5V?
Any thoughts would be greatly appreciated. Thank you.
Attachments:
ExternalTrigger.jpg ‏29 KB

Hello tuckturn
Thank you very much for getting in touch with us.
1) In Measurement and Automation Explorer, the default is an input. You would need to use LabVIEW to change the SMB connector to be an output. Can you please show me a screenshot of your camera attributes in Measurement and Automation Explorer.
2) Where does this input signal come from? Do you have a 5V TTL compliant output to test this? Can you please provide me the specification for whatever device is outputting the voltage?
Thanks again.
Sincerely,
Greg S.

How to connect external trigger PCI-1433

Hi all:
I met the same problem as this old post: https://forums.ni.com/t5/Machine-Vision/How-to-connect-external-trigger-PCIe-1433/m-p/1677560/highli...
however the post did not give solution.
I am having an issue getting the external trigger( from PCI 6259) to work with a cameralink camera, a PCIe-1433 card . The PCI 6259 is connected to BNC 2111, the output trigger signal from CTR0 is connected to the SMB connector on the 1433 card and is providing pulse train at TTL voltages (0-5V). Using the MAX SOFTWARE and under the Acquisition tab I have CC1 set to external 0, however the camera is not receiving this external trigger. The camera is Basler 4096-140km.
I measured the ouiput signal from CTL0, the sigal seems good.
I tried RTSI trigger before, failded. I thought SMB should be more straight forward, seems I was wrong.
Looking forward to reply!
Attachments:
camera configuration.jpg ‏168 KB
External Camera Trigger(SMB).vi ‏57 KB

Bobjojo,
You will actually need to affect the properties of both the camera and the frame grabber to take advantage of this triggering mode. I found a document that contains a good run down of the process to acquire in this mode (linked below). As far as the programming for the acquisition is concerned, the frames will be built at the driver level for the specified frame height. This means that the IMAQ driver will composite the line scans for you, and any simple acquisition (the document shows using the Vision Acquisition Express VI) will be able to pull the image into LabVIEW.
www.ni.com/white-paper/13786/en/pdf
Karl G.
Applications Engineer
ni.com/support

I am using PCI-6033E IO card and i would like to send 5 volts (high logic ) to the trigger box. the trigger box will trigger the frame grabber card, that i am using for image acquisition.

i am using PCI-6033E IO card and i would like to send 5 volts (high logic ) to the trigger box. the trigger box will trigger the frame grabber card, that i am using for image acquisition.

Hello;
The first thing you need to figure out is the shape of the trigger pulse needed.
In case you just need a logic high TTL pulse, you can use one of the digital lines of your DAQ device.
In case you need a pulse train (multiple trigger pulses), you will need to configure one of the general purpose counters to accomplish that task.
You can find examples in both Labview and NI-DAQ showing how to program your DAQ board to accomplish both approaches.
Hope this helps.
Filipe A.
Applications Engineer
National Instruments

Synchronize multiple tasks and multiple boards with X-series USB devices

Hi all,
I am trying to figure out how to synchronize multiple tasks across multiple X-series USB boards (6353, to be precise).
I have to run a digital output task AND an analog output task on each board. All four tasks (the DO and AO on Board 1, and the DO and AO on Board 2) must be synchronized.
I know how to synchronize multiple tasks on a single board. I've been doing that for years. That works fine.
I know how to synchronize a single task across multiple boards (say, a DO task across 2 different boards). That works fine too.
For the life of me, I can't figure out how to marry the two. Everything I've seen, all of the examples, etc. assume you want to do one or the other, or that you have a RTSI cable available. Are there any examples out there that synchronize multiple tasks across multiple USB boards?
I tried exporting the AO clock signal from my master AO task to PFI12, and then using the signal on PFI12 to as the clock source for the remaining tasks (Dev1/PFI12 physically connected to Dev2/PFI12, and Dev1/PFI12 set as the clock source for Dev1's DO task).
I have also tried setting Dev1/aoSampClock as the source for Dev1's DO task.
Under both configurations, I invariably get error -89137 when I try to start the tasks -- required resources (PFI12) in use by Dev1/do/SampClock. I understand what the error is telling me. What I don't understand is why I'm receiving this error when I don't have any of my tasks configured to use the DO Sample Clock. It seems as though it is not possible to export a clock signal to a PFI line and simultaneously run a clocked digital task, even if the clock source for that task is specified as something other than the DO Sample Clock?
So, my question is, is it possible to do what I want to do? And if so, how do I do it? How do I configure a common clock source across multiple tasks running on multiple USB boards?
Hoping for insight from those wiser than I...
Diane
Solved!
Go to Solution.

Update: I decided to try using a counter as the source clock. One cannot use counter 0 to accomplish this, but it does appear to work with counter 1.
I'll take what I can get. Fortunately I have two spare counters. (Yes, I'm running counter tasks too -- 6 of them -- but they don't have to be synchronized.)
I have to add both digital and analog input tasks as well -- all synchronous with each other, but not with the output tasks since they'll be running at different sample rates. I hope I'm able to use a counter as the source clock for those as well.
My head aches.

Im using a pci-6221 daq-card.I want to know the difference(use)of a line output and a port output.

Im using a pci-6221 daq-card.I want to know the difference(use)of a line output and a port output.

Hello Hellraiser24,
This question has actually been discussed in another thread here:
http://forums.ni.com/ni/board/message?board.id=170&message.id=95895&requireLogin=False
I hope this helps,
E.Lee
Eric
DE For Life!

I am using an NI PCI 6024 E board device for an analog output application. Can I generate two independent waveforms, one on each analog output channel?

I am using an NI PCI 6024 E board device for an analog output application. Can I generate two independent waveforms, one on each analog output channel? In attach I send a example of my vi to control one chanel, but i need to control both but with diferent waveforms.
Is the vi correctly programed to this propose?

Yes you should be able to do that. look at the signal generation examples shipped with LabView
You can create a 2 D array, with each row representing a wave form per channel. The number of points of the wave form (per row of the 2 D array) represent the number of points in the output buffer
The wave forms can have different amplitudes/shapes, and therefore they are independent in this sense.
However, you need to set the update rate,which is the same for both channels. The update rate together with number of points per buffer determines the frequency of the wave forms. This means the two wave forms will have the same frequency.
To have different frequencies, you need to have say, on wave form with one cycle per buffer, and the other waveform have 2 cycles
per buffer. in a case like that the frequency of the second channels is twice that of the first channel, and so on
The two wave forms are then not truly independent, they may have different amplitudtes/shapes, but related in frequency.

IMac G5 (2004) logic board and the repair extension program

Hi,
I know that there are tons of topics about logic board/power supply troubles witht the first generation G5s, and I'm sorry to start yet another new thread, but I still have some questions about this issue.
I have a first generation iMac G5. Long story short...when I first got it the computer would shut itself off sometimes after I had put it to sleep. When I would try to restart nothing would happen, but usually letting it sit unplugged a while would solve the problem (occasionally when I'd restart a different start up noise would sound and the white light would flash quickly). It happened so randomly, that I just lived with it, blaming the problem on my dorm network, or a power failure. A few days ago I tried to start the computer up and nothing happened (just a VERY faint sound like a clicking or ticking or intermitant humming...definatly electrical sounding). I unplugged it overnight, but the next day still nothing. I decided to go through the troubleshooting steps Apple lists online. The internal power button could not start it up and the second LED does not flash, which according to Apple means the logic board needs replacing. Luckily my serial # is covered by the Repair Extension Program, and I'm bringing my computer in tomorrow morning to be fixed (just in time for back to school).
I have become concerned, while browsing the discussion topics, that this fix may not be permenant. I've read a few posts that claim that they are on their third Logic Boards, and this kind of scares me. My parents bought me the computer (our family's first ever Mac) and did not purchase the AppleCare extended warranty (they had heard how reliable Macs were...hmmm.) I didn't even know that I could purchase AppleCare after-the-fact until it was several months after my 1yr warranty expired. I do appreciate the fact that Apple recognized what seems to be a common problem with this generation of iMacs, but I wonder why they did not contact the owners of these machines to let them know that the problem and repair extension even existed.
So I guess my real question is...Does anyone know if, after this repair Apple will replace the logic board if it dies again? Is there a limit to the number of qualified repairs you can get through this Repair Extension program? Also is there any other Extended warranty type thing I can purchase after my 1yr. warranty is up.
Sorry the post is so long...I'm just scared about the fate of my beloved Mac.
iMac G5 (2004) Mac OS X (10.3.9)

Oh man, am I actually relieved reading this thread. Just took my baby (iMac G5 first generation) in for repairs today, not knowing what was wrong with it. Luckily my serial numbers are in the range, so I'm crossing my fingers that they're going to cover this.
Brief synopsis of what happened, in case it differs from anyone else's
About a month ago, my iMac started to not wake up from sleep mode. Instead of waking up, it would just shut itself off. This continued for about 2 months, with me thinking nothing of it. Then, instead of shutting itself off, the computer would restart when I attempted to put it to sleep.
Then, last night, I was surfing the net and all of a sudden the power just failed. No noise, no "grey screen", we're talking like a millisecond later the screen was black. I treid unplugging the machine and then plugging it back in while simultaneously holding the power button to reset the PSU and still nothing. At that point it was about 1:30 in the morning, so I just went to bed not wanting to deal with it until the next day. By the time I woke up, there was a distinct smell of electrical components burning (in grade 8 shop class we used to hook up resistors to the voltage generator and crank the juice up until they fried when teach wasn't around, so I distinctly remembered the acrid stench :P)
I opened the back up and did the LED check, and #2 wouldn't even blink. So I took it in and they said they'd have to get back to me and that's where I stand now.
The thing that concerns me is that if some of the components fried that there may be possible damage to the motherboard etc. Luckily I'm not too worried about the hard drive because it did still boot up and all. People that have experience with this, what usually happens with files on your HD after a logic board replacement? Are they usually fine?
The other thing that concerns me is that apple has made no effort to contact me, and it will be 2 years after the purchasing date come November 1, 2006. I'm lucky that I caught this now before it was too late.

PCIe-1433, extension boards and multiple trigger outputs

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