PFI0 Trigger : howto plot PFI0 and record dateTime of Rising Edge ?

Hi,
I'm acquiring an analog signal on my PCI 6250, triggered on PFI0. For this test, I use DAQ Assistant
I use VS2010, MS2013, DAQmx 14.0 .
I acquire at 1MHz, 5,000,000 of samples (5 seconds)
I would like to plot on a Digital Graph my PFI0 signal, which shows on horizontal axis Date Time. I would like also to know if it possible to record the DateTime of each Rising edge detected (Rising edge period on PFI0 may be faster than 5s) in parallel of my Analog Acquisition or at least the DateTime of the rising edge which has triggered the Analog acquisition.
Kind Regards,

Hello Charly,
Yes you could start 2 differents tasks, one analog aquisition to plot your signal and at the same time one numeric like a counter to mesure your rising edges.
Hope this will help you,
Kind regards,
Maxime G. | Application Engineer
National Instruments France
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How can I use the pulse train from a 6602 to trigger an niFGEN and niSCOPE on each rising edge of the pulse train?

Hello,
Here is my application: I need to use a 6602 counter/timer to generate a pulse train of certain frequency and duty cycle. On each rising edge of this pulse train, I need to output an arbitrary waveform on Ch. 0 of an niFGEN (5422) AND acquire data from CH. 0 of an niSCOPE (5124). I also need to synchronize the niFGEN and the niSCOPE to the same clock used for the pulse train (6602/ctr0). This process needs to continue until the user stops the system.
I can generate the pulse train using the 6602 just fine using ctr0, but the pulse train shows up on OUT0 by default. When setting up the niFGEN and niSCOPE to trigger on rising/positive slope edge, OUT0 is not an option for either device as a source for the digital rising edge (pulse train). The main options for both are PFI0-3 and RTSI lines.
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Images of my current front panel and block diagram are attached. If you would rather have the actual VI's just let me know. Any help and/or explanation on this is greatly appreciated. Thanks in advance.
Attachments:
Front_Panel_Control.jpg ‏278 KB
Block_Diagram_Control.jpg ‏263 KB

Hello Cgifford,
Welcome to National Instruments Forums.
To output your signal to the PFI lines,
you can use external connectios between OUT0 and PFI lines. You can also use
the backplane to do so by routing into the same RTSI line.
1)
On the SCOPE and FGEN, the name of the
terminals are actually “PXI Trigger Line x/RTSIx” but on the 6602 you might
need to route the signal using the property:
You can also use the DAQmx route signal which perform the same opperation.
2)
This will depend on the frequency of
your pulse train. If this is lower than about 10 ms, then you can probably
place this on a loop and start and stop the acquisition every time. If the
frequency is higher than this, you will have to use:
- Scripting on the FGEN side (read more)
- MultiRecord Fetch (more information in the scope help file
section “Acquisition Functions Reading versus Fetching”).
3)
The short answer is yes. The longer one
might depend on how tight you need the synchronization to be (us, ns, ps). For
very tight synchronization, you should look into here.
Message Edited by Yardov on 06-18-2007 03:14 PM
Gerardo O.
RF Systems Engineering
National Instruments
Attachments:
property.JPG ‏7 KB

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Hi Rich
Thanks...
I have PCI - 6033E High resolution multifunction I/O board and NI BNC - 2090 adapter chasis.
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Two cosecutive pulses encompass one complete cycle of the combustion process inside the engine.
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Message Edited by SeaMist on 06-26-2008 02:49 AM

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I have a PCI-MIO-16E-4 DAQ Board, a BNC-2090 Connector Block and LabVIEW 6.1. How do I configure a VI like the example 'Acquire N - Multi-Analog Hardware Trig.vi' to accept an analog input trigger from the PFI0/TRIG1? What parameters do I give to the AI Config, AI Start and AI Read VIs? The parameter 'Trigger channel' only seem to accept channel numbers, so what channel number do I have to give to make it undestand that I want to catch the trigger using the PFIO/Trig Channel?
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Hi,
look into Help!
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Waldemar
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How can I acquire and record pre trigger samples

Hi I would like to acquire and record pre trigger samples. I have used many different methods including:
http://digital.ni.com/public.nsf/allkb/9DE9E3E4DAD9EE93862579C60018B6EA
the problem is I would like to acquire pre trigger samples before start trigger not reference trigger. I think reference trigger is used for stop triggering not start triggering. Could you please help me on this
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Hi tintin_99,
I hope you are well and thank you for posting your issues to the forum.
I wanted to ask you some further information in regards to your application:
- What version of LabVIEW do you have?
- What operating system (OS) are you running on your PC/laptop?
- Which application programming interface (API) are you using? NI-DAQmx, NI-Scope?
When you mention you want to acquire the pre-trigger samples before the start trigger and not the reference trigger, how are you currently doing this? Would you be able to post up your code so that everyone can have a look at it?
Here are some further links to look at:
- Continous Analog Input Acquisition with Pre-trigger Scans using 2 E-series Boards
- How Can I Acquire Pretrigger Samples with NI-SCOPE?
- Software Analog Trigger with Pre-Trigger Samples
- Synchronized Analog Input/Ouput with an Analog Trigger and Pre-Triggered Samples
I hope this is alright for now.
Kind Regards,
Dom C

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void CWinTFSView:tartDaq()
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float ScanRate;
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ScanChannels[2].Insert(0, "1");
ScanChannels[3].Insert(0, "2");
ScanChannels[4].Insert(0, "3");
ScanChannels[5].Insert(0, "4");
ScanChannels[6].Insert(0, "5");
ScanChannels[7].Insert(0, "6");
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Attachments:
code.txt ‏4 KB

Hello DrObb,
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-Alan A.

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Hi xseadog,
Sincere apologies for inordinate delay in reply.
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