Two digital channel output question

Hi, everyone
I need some helps on design two digital channel output
In brief, I want to use a PCI-6731 output with BNC2110. Two digital
output channel will be used, e.g. Dev1/port0/line0:1. I hope line0 could
output a steady finite samples in frequency f1 (e.g. 10kHz), and total
number of samples like N1 (e.g. 1E6); in the mean time, I hope line1
could output finite samples in frequency f2 = f1/M (e.g. 2kHz), and
number of samples like N2 = N1/M (e.g. 2E5). In another words, I expect
line0 and line1 output same time length samples sequence with different
frequency and also different number. Please note that parameter should
be expected to be controllable, and sometime f2 and N2 are not exactly
integer (then we need take round value).
Thanks for your help in advance.
Solved!
Go to Solution.

Attached is a vi that does what you want, I think. It used two digital outputs clocked by one of the counters. The digital outputs are fed waveforms that are generated by making two frequencies with an integer ratio. You can change the part of the code that generates the waveforms as you wish, and use the rest to do the output.
Richard
Attachments:
Synched DO waveforms.vi ‏38 KB

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Labview Version 8.5
Labview Version 8.6
Labview Version 2013
Attachments:
Run 2 Counter Chg Freq 2.vi ‏28 KB

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Labview Version 8.5
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Labview Version 2013
Attachments:
Run 2 Counter Chg Freq 3.vi ‏35 KB

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This question was solved.
View Solution.

have you gone to Control Panel --> Sound then verify that Digital Output is enabled. not speaker ouput.
(If you are using Vista you should see a green check mark next to it)
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****Please click on Accept As Solution if a suggestion solves your problem. It helps others facing the same problem to find a solution easily****
2015 Microsoft MVP - Windows Experience Consumer

I want to find the digital audio output on my Pavilion vd6853ea notebook

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This question was solved.
View Solution.

HI,
macapaca666 wrote:
Thank you so much for the fast reply.
I thought that may have to be the case.
Can I please ask you a few other questions?
If I want to get a digital audio output not using a HDMI (My DAC doesn't have this input), can I get a good result with something like a Musical Fidelity V link USB to S/Pdif converter or a M2Tech Hiface digital audio interface? Sorry, I cannot make a recommendation on either of those products as I am not familiar with them.
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****Please click on Accept As Solution if a suggestion solves your problem. It helps others facing the same problem to find a solution easily****
2015 Microsoft MVP - Windows Experience Consumer

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Solved!
Go to Solution.

Hello Hannes,
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Note: Here we took 1 as high and 0 as low.
Kind Regards,
Thierry C - Applications Engineering Specialist Northern European Region - National Instruments
CLD, CTA
If someone helped you, let them know. Mark as solved and/or give a kudo.

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Hi All,
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>
sre wrote:
> Hi All,
>
> Can we use two communication channels at the outbound side.my scenario is to send a file from database system to SAP. I know that we can use JDBC adaptor at the inbound (PI receiving side) and FILE adaptor at outbound (PI sending side). at the same time when we dump the file onto SAP application server , i need to send workflow notification to relavant department agent informing about the file location.
>
> Could anyone tell me how we are going to configur this scenarion.
>
> Regards
> Sre.
so your scenario is
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