Reusing digital trigger on PCI-6733

I am working with a PCI-6733 analog output card. I would like to use the digital trigger to start a waveform, then use it to start another waveform without stopping the first (then start a third while the first two are running, and so on). I don't need to reroute the trigger signal - all the pulses can (but don�t have to) come through the same PFI terminal.
I haven't been able to do this with NI-DAQmx (I get errors, e.g. -50103, -89137, saying the "resources are in use"). Is it possible? Can it be done using register level programming? - looking through the register level programming guides, I didn�t see anything that indicated setting a new trigger would stop the currently running waveforms.
Thanks in advance,
Matt

Hello Matt,
I believe you can do it only if you use different PFI lines to trigger your waveforms. You won't be able to do it with one digital trigger, that's why you were getting those errors.
Try using three PFI lines to trigger each waveform and let me know if it works please.
LA

Similar Messages

No digital trigger signal on a PFI x-port in a PCI-6259

Hi,
I am using a PCI 6259 DAQcard (with a SHC68-68-EPM cable and version:2.9.1f0) to get an analog signal and a digital signal. The analog signal is used in NI MAX or NI Signal Express (DAQmn 9.7.5) to trigger it with the digital signal. When the digital signal is mounted on a Px/x port I can detect it. If I want to use it as a trigger signal on a PFI x- (better PFI x/Py.y-) .port I do not get any trigger quantitiy.
With a NI USB 6008 everything works quite well. Remark: The digital post is just labled as: PTI 0 and not as in the case of the PCI 6259 on the NI CB-68LPR-board: PFI x/Py.y.
Another remark is that I did not measure a voltage difference of 5 volt at the provided port.
How can I fix the problem and use a PFI x/Py.y-port for a digital trigger?
Solved!
Go to Solution.

Hey AndGar,
by trying I found one chanel on the platine with give me an trigger signal. So I can measure something but not in every chanal.
Maybe just the PFI x- ports are reserved for triggering and you need to close every other task which measures a digital signal.
*actuall I have no access to the programm*
Thanks and best regards,
Marcus

How to use digital trigger with analog I/O

How do I program analog input and/or analog output to start on a digital trigger (PFI pin) on PCI-4451/4551.
I have tried out various configuration and succeeded in starting analog input, simultanuous input and output triggered by the the anlaog input signal. I have also succeded i triggering 4551 from the dedicated EXTTRIG pin.
The problem is to trigger on a selectable PFI pin. I find the help for "AI Trigger Config" and "AO Trigger and Gat Config" misleading - some unsupported features seem to work while selecting PFI pin as source make the PC restart immediately.
I have not been able to find any LabVIEW example that shows how to use PFI pin as trigger input.
Using LabVIEW 7.1, NI-DAQ 7.3 on Windows 2000.
Kind regards / Med venlig hilsen
Torben

Hello
The PCI-4451 does not have any PFI lines. If you look at the user manual in the link beneath you will be able to confirm this by looking at the connector signal discriptions. The same is valid for the PCI-4451
http://digital.ni.com/manuals.nsf/websearch/6A32358C53BB15F086256660007392DC?OpenDocument&node=132090_US
The two ways of triggering that you have succeded are the analog triggering and digital triggering that you can peform with the PCI-4451.
Regards
Mohadjer

Digital trigger mac OSX

Hi everybody
I am running a machine mac OSX snow leopard with Labview 2011. The acquisition card is a PCIe-6259 with a connection box SCB-68. I would like to perform the acquisition of an analog signal according to a digital trigger (PFI0 or PFI1). I have created this simple VI that unfortunately does not work on my machine. The VI exits immeditely without doing anything and I do not have even an error. If I switch to analog trigger it works nicely but it is slower than I need. If I run the same VI on a windows machine it works fine. What am I doing wrong?
Thank you very much for all the tips
antonio
Attachments:
Trigger_acquisition_test2.vi ‏23 KB

I do not have any hardware so I cannot test. Try putting an error indicator (or probe) on the error wire coming from the Start Trigger VI to be sure that you are not getting an error. I keep automatic error handling turned off, so I am not sure, but I think that wiring the error out terminals changes the way it works. Put an error indicator at the end of the chain also.
Lynn

Register level programming for PCI 6733

The information provided online for RLP with PCI-6733 is very limited. Only the register map for PCI-6713 is provided @ http://www.ni.com/pdf/daq/us/release_ni67xx.pdf.
However, how the board maps its resources on the PCI bus is not clear. So could you please provide the following information
1. What the manual means by "Base Address" and "Window Address".
2. What is mapped by each of the boards BARs (Base Address Registers).
3. The difference of registers between PCI-6713 and PCI-6733.
If possible, could you please provide a detailed reference for this Analog Output board as for other boards, such as PCI-DIO-96.

Maybe you don't need the MITE manual after all. My documentation (from 2003) lists only the "DAQ-STC Technical Reference Manual - Part Number 340934B-01" and "PCI/PXI 671x/673x Register Map". I don't know where I got the information about the MITE -- one comment in my code suggests comedi.org, while another one mentions I started rewriting the code to get rid of the comedi stuff (so there must be information available from somewhere else, probably extracted from the DDK).
IIRC the MITE is only used once, for initialization.
I'm sorry I can't provice any code, but the driver I wrote is not openly available.
Warning: Some of the DAQ-STC information was wrong in the version I used, I had to use trial & error for some of the funtionality.
Check out:
http://digital.ni.com/manuals.nsf/websearch/E929838D7D0EE50986256728007FEADF?OpenDocument&node=132100_US
http://digital.ni.com/public.nsf/websearch/15f094f65a17e3af8625660d0018a20a?opendocument
Message Edited by Thorsten Jens on 08-22-2008 08:17 AM
Message Edited by Thorsten Jens on 08-22-2008 08:22 AM

Eeprom address and caldacs model/address for pci-6014 and pci-6733

I have one pci-6014 and one pci-6733.
I need to transfer the calibration constants from eeprom to caldacs.
I search the adrress of the constants in the eeprom and the model and address of che caldacs.
Tanks

Hello,
It seems to be a common mode voltage or ground loop problem.
When you are sourcing an output signal from your DAQ board, the signal is already grounded, it means that it has already a reference. If you measure this output with a measurement device, which has also a ground, the both ground potential are not necessary equal. This difference is the common mode voltage and influences your measurement (offset).
Please check the following links to have more detail about grounded signal.
http://zone.ni.com/devzone/conceptd.nsf/webmain/8D907374C5E867F186256C640059F30C?opendocument
http://digital.ni.com/worldwide/france.nsf/webtechsupp/0E6A8D5999CEE1AF8025683C0056A4B1?OpenDocument&node=163080_f
Best regards,
Alexandre D
National Instruments

Software trigger the PCI-5122

hi
I am going to program a board with PCI-6552 and in meantime in specific times capture just one sample of the anolog output of the board by PCI-5122.
1) Can I use the digital output of one channel of PCI-6552 as trigger for PCI-5122 (to activate the fetching of PCI-5122) e.g. by connecting the output of PCI-6552 to the external trigger input of PCI-5122.
2) Does it need to synchronize the two boards.
2) Is there any example for software triggering the PCI-5122, and how long it takes from triggering to sampling the data.
3) How I can capture just one sample in every triggering time and then wait for another trigger time.

1) after programming the two output of the NI-6552 (DIO0 and DIO1) with the same pattern and connecting the DIO0 to Ch0 of PCI-5122 and DIO1 to external trigger of PCI-5122 and assigning the external trigger as the edge trigger source, the the signal is different from when the Ch0 is assigned as the trigger source. why are they different, also it does not accept two triggers sequentially. (Pic 1)
2)I am using a loop for generating the data and a loop for aquisition, when I using two trigger in one cycle and select niscope repeat_time=4, the signal position for 8 aquisition should be the same but as you can see in figure 3 the first two pulse are correct but the other ones are different.
Attachments:
pic1.bmp ‏2305 KB
pic2.bmp ‏2640 KB
pic3.bmp ‏2305 KB

Multi-buffered acquisition with digital trigger

I have a PCI-MIO-16E1 and I need to do three channel (250KHz/channel - ~400 scans/trigger) multi-buffered acquisition with digital trigger (trigger => 30 Hz).
I could not find any example of multi-buffered acquisition. Could anybody help me?

Hello,
I assume that you are refering to a retriggering setup where each time you recieve a trigger you take 400 samples on each channel at a rate of 250kHz per channel (total scan rate = 3CH * 250kHz = 750kHz).
In order to keep the system hardware timed you can use the two counters on the board to produce a retriggerable pulse train that will act as your scan clock. For example each time the counter recieves a trigger it will output a clock signal of 750kHZ with 400 or so pulses in order to take ~400 scans/trigger.
This clock signal can then act as the scan clock for your 3 channel analog input operation.
Now we have to figure out how to set up the retriggerable pulse train from the counters and have the analog input use the counter output as a sca
n clock.
Good thing there is an example that is already written
http://zone.ni.com/devzone/explprog.nsf/6c163603265406328625682a006ed37d/aab61e455564a04d862568930018e725?OpenDocument.
Good Luck.

Repetative trigger from PXI-6733 to PXI-6220

I am running a PXI-6733 in continuous mode and want to send a trigger pulse from the 6733 to a PXI-6220 at the start of each cycle. I will also want to do this in finite sample mode. I have used a DAQmx Connect Terminals VI to connect the trigger channels. But I cannot find how to set the 6733 StartTrigger as an output or how to synchronize it with the analog output. Any suggestions would be welcome.
Bob

Since your AWG needs to send the 6220 the trigger, the M Series (6220) correlated DIO feature doesn't help. Luckily, the 6733 also has the feature. I've attached a vi that shows how to set up the 6733 to output a companion digital waveform to the analog waveform. The first point in the digital waveform is a 1, the rest is 0. You will have to connect a physical wire from the digital line used to an input (PFI) of the 6220.
If you can run the 6220 in a 'batch' mode (a series of finite tasks), you can use this digital line as a Start Trigger for your 6220. If your passes happen too quickly, you might need to run the 6220 continuously. Now, you might use a counter on the 6220 to generated the sample clock for the analog input task. The digital line from the 6733 would serve as the counter tasks's Start Trigger. The counter task would produce a series of pulses each time it got this trigger. This is getting a little complicated.
Attachments:
6733 Correlated AO and DO.vi ‏66 KB

How do I use a push button digital trigger with my 6034E DAQ board?

I am only a Lab View toddler.
I am currently using a push button, wired to PFIO/TRIG1 and DGND, with a anolog trigger. However noise is causing my program to be triggered. I was told that a digital trigger would help to reduce the random triggering. How do I create a push button digital trigger?
Thanks

implement a schmitt trigger.
Struggling with Labview wrote in message
<[email protected]>...
>I am only a Lab View toddler.
>I am currently using a push button, wired to PFIO/TRIG1 and DGND, with
>a anolog trigger. However noise is causing my program to be triggered.
>I was told that a digital trigger would help to reduce the random
>triggering. How do I create a push button digital trigger?
>Thanks

Generate counter output based on a digital trigger

I am trying to output a train of pulse based on a digital trigger (GO bit). When the GO bit goes high, I want to output a pulse train after an initial delay (ie: 2 seconds). When the GO bit goes low, I want to stop this pulse train. When the GO bit goes high again, I want to start the same pulse train with the same initial delay.
The output pulse train has 2 frequencies so I am using 2 counters that generate the same pulse but one of them is delayed by a certain amount. Then I combine the output from both counters into one output using simple BNC T connector. Since I am using 2 counters (max # of counters available to me), I can't create a finite pulse train.
If I use a pause trigger, the only problem is that the second time the GO bit goes high, the initial delay is not used (each channel or counter has a different delay).
So far the only way I can think of is by software timing the counter (by counting the time since the task has started) and stopping the task once certain amount of time has passed. Then I wait for a second trigger which should start the pulse train again with the initial delay.
Is there a better way to do this?

One more thing:
Is there any way to use a digital trigger that is based on two different digital signals ANDed together? I basically want to output the pulses when 2 digital inputs are binary 1 at the same time.

Platform services PCI 6733

Bonjour,
Après avoir installé un carte PCI 6733,sous Measurement and Automation, je peux faire l'auto test de la carte (résultat OK), je peux accéder au panneau de test et l'utiliser avec succès, je peux créer une tache type génération de tension sur l'une des voies disponibles, mais dès que je veux l'utiliser en cliquant sur le bouton exécuter cela me renvoi l'erreur -50400, NI platform services : le transfert n'a pas pu être achevé dans la période de timeout ou le nombre spécifié de tentatives. je précise que je n'ai modifié à ce stade aucun des paramètres fixés par défaut lors de la création de la tache. Le problème reste le même lorsque je cherche à utiliser l'un des exemples fournis avec labview. Je pense à un problème d'installation. Je suis sous seven pro 64 bits, et j'ai testé avec le NIDAQ9.0.2 fournit sur le cd de la carte, avec la version 9.1.7 et 9.2.2.
Comment trouver l'origine de mon problème qui doit être du à une mauvaise utilisation de ma part (pour info, je n'ai jamais eu de soucis avec XP SP2 et la version 4.4.1f0 de measure and automation).
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Cordialement,

Bonjour,
Il s'agit surement d'un service qui n'a pas du s'installer correctement, je vous invite à réaliser les mêmes opérations que dans ce post:
http://forums.ni.com/t5/Discussions-de-produit-de-NI/Probl%C3%A8me-de-carte-NI-PXIe-6672-timing-modu...
Cordialement,
Da Helmut

Hardware digital trigger to start stop continuous analog acquisition

Hi I have seen the following example to use digital trigger to start and stop for finite number of samples. The example names is (DigitalStartandStopTrigger.vi)
in this example Reference Digital edge is used to stop acquisition but if I change to continuous then Reference Digital edge stops and show an errir. Could you please let me know how can I use hardware digital trigger to start stop continuous analog acquisition. An example would be really great
many thanks

HI tintin_99,
The way that example works (by modifying the read position of the buffer) essentially performs the same operation that the continuous samples mode does. That is to say, it is already a continuous acquisition.
The article below explains this in more detail, and the reasoning behind specifying buffer size manually and other tricks used. You may have already visited it in order to get the example VI, in which case it may be worth another read over.
http://digital.ni.com/public.nsf/allkb/BA775B0E445BFA79482571FE0032CCEB
Kind Regards,

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1) How I configure a task to allow a digital input line to trigger a AIN reading in VB6.0 with a USB-6210?
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Hi Hjehan,
I recommend checking the following knowledge Base that can point you to the different DAQmx examples.
Regards,
Faris A
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Any examples that work with a PCI-6733?

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Thanks, I can use the AO vi's.

Reusing digital trigger on PCI-6733

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