Acquire both Analog and Digital waveforms from MSO3034 (Tektronix)

Hi,
How can I acquire simulataneously both the digital (16) and analog (4) channels from the Tektronix MSO3034 scope?
Thanks

Klimovitsky,
I am not familar with how the MSO3034 performs simulataneous acquistion, but the LabVIEW driver for the MSO3034 can configure multiple channels and then read the data from the scope. There are examples with the driver on how to read multiple waveforms.
Regards,
Danny F
Danny Funk -- Staff Product Support Engineer -- InsightCM R&D -- National Instruments

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Attachments:
Export Waveforms To Spreadsheet File (1D)_wo extra line.vi ‏33 KB
Multi-Device Synch-Analog Input-Finite Acq-Analog Start_Claire_wDigitalin.vi ‏105 KB

Hi ClaireJ,
Sounds like a reference clock conflict. This KnowledgeBase (KB) talks about this error when using simultaneous sampling. Also, might want to check the device routes in Measurement and Automation Explorer (MAX) as discussed here. Finally, if you are routing your PFI line over a RTSI connection, this error can occur. This KB discusses it.
As to your second question, this post should help.
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s can I have timestamps for each sample?I mean,is there a notion of time information on this board?Finally,is there a way to know ,in the double buffer's case,the number of samples in the halfbuffer which is not full if the acquisition stops by a trigger?.I am using the PCI-6110E/6111E with the NI-DAQ software version6.7.Is there a way to record at the same time analog and digital channels?If,yes can I have timestamps for each sample?I mean,is there a notion of time information on this board?Finally,is there a way to know ,in the double buffer's case,the number of samples in the halfbuffer which is not full if the acquisition
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s can I have timestamps for each sample?I mean,is there a notion of time information on this board?Finally,is there a way to know ,in the double buffer's case,the number of samples in the halfbuffer which is not full if the acquisition stops by a trigger?.PALE wrote:
>
> I am using the PCI-6110E/6111E with the NI-DAQ software version6.7.Is
> there a way to record at the same time analog and digital
> channels?If,yes can I have timestamps for each sample?I mean,is there
> a notion of time information on this board?Finally,is there a way to
> know ,in the double buffer's case,the number of samples in the
> halfbuffer which is not full if the acquisition stops by a trigger?.
Start by looking around the examples that ship with LabVIEW (if you are
using LabVIEW).
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Hi everyone,
I am working on a control system program for some practical test work. Currently I am working on the data acuisition component of the Labview program. My architecture is produced-consumer loops with a que. My system will have analog inputs, analog outputs, digital inputs and digital outputs. It's not a time critical sytem, but I would like all of the data acquisition to be synchronised. I have attached my program as it is at the moment. I am having trouble getting all of the data into the que since I have two data types. Also, I'm not sure if i've synchronised the four read/write sequences correctly. I would greatly appreciate if somebody could take a look at my program and give me some advice. Thanks in advance.
Solved!
Go to Solution.
Attachments:
control_v2_DAQ loop.vi ‏46 KB

Robert, the specific error that I get is:
Error -200462 occurred at DAQmx Start Task.vi:6
Possible reason(s):
Generation cannot be started because the output buffer is empty.
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This error occurs at the 'DAQmx write.vi' function. I just want to sent one sample per second, for each channel. I would like the producer and consumer loops to each run once every second.
I have attached part of my code with just the data acquisition and writing. Any help would be greatly appreciated.
Attachments:
control_v2_ML_simple.vi ‏83 KB

Synchronizing analog and digital i/o

We're using LabView 6.0 and a PCI-MIO-16E-4 to run our electrophysiology experiments, and have a moderately tricky set of requirements.
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What we need: we'd like to independently control at least 6 (preferably more) stimulator devices. The stimulators look for TTL triggers, so in principle we could use the DIO ports to send those trigger events. The trouble is timing: we want the digital output to be tightly synchronized (again << 1 msec) with the analog i/o and to be able to specify the timing of those events to within 100 usec or so. I've put together a very dumb VI that takes as input an array of (bit pattern,time) pairs, then uses a While loop and Wait to manage that event list and Write to Digital Port to generate the trigger events. Since Wait is only 1 msec precision, and since we don't have a good way to synchronize with the analog i/o, we've got jitter in the trigger events of about 1 msec, which is too big.
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Send out analog and digital signal simultaneously ?

Is there any way to send out an analog signal and a digital signal at
the same time? Time is critical in my application. Milisecond delay is
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Any information from you will be deeply appreciated.
Sent via Deja.com http://www.deja.com/
Share what you know. Learn what you don't.

You went a little too far. the while loop I was talking about was the one around the digital write. You've now taken the digital write completely out of the loop and closing it. You can't do anything with the digital when the analog in is running. You've also closed the analog write while the analog in is running. The attached is more like what I was talking about.
Even with the diagram cleaned up, it sounds like you still have a problem. I don't know the details of your hardware setup but I would start by looking at the analog signal you are generating and verifying that it is correct to your hardware. It would help if you had a scope to troubleshoot. If the signal is correct to the hardware, then trace it through to the connection to the DAQ's analog input. If it's correct there and you still don't see the signal, then you may have wired up the DAQ incorrectly. You haven't specified the connection type (differential, RSE, etc) and I believe it will default to differential.
Attachments:
Single Channelv 2_mod.vi ‏535 KB

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Hi ,
I use Oracle 10g and forms10g.
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you cannot RETURN and RAISE a function.
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Acquire both Analog and Digital waveforms from MSO3034 (Tektronix)

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