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BentRods
Super User
Joined: 01 Dec 2004
Posts: 20
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 Posted: Fri Nov 04, 2005 1:15 am Post subject: ADC11 Freq measurement in LabView |
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Hi
from the ADC11 Labview Examples, the default settings are working and I can see how to access other channels with Sub-VI's but I need to measure Frequency not a Voltage, how do I do this ?
I would like to measure Freq on two Channels, the rest will be Voltages
Reading the "ADC11/22 Manual V1.0" I see no reference to this, so I'm thinking this feature is handled External to the ADC1132.dll file ?
TIA
Bentrods |
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Michael
Guru
Joined: 07 Jul 2005
Posts: 93
Location: St Neots, Cambridgeshire
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| Posted: Fri Nov 04, 2005 2:44 pm Post subject: |
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Hello,
The ADC11 will not convert readings into frequency. This is performed by the software.
You may be able to do this with a Labview tool.
Best regards,
Michael |
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BentRods
Super User
Joined: 01 Dec 2004
Posts: 20
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| Posted: Sat Nov 05, 2005 1:53 am Post subject: |
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Hi
could you give me some more detail's about how this is done,
either by the PLW program or from the dll file ?
Bentrods |
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Sarah
Guest
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| Posted: Tue Nov 08, 2005 9:58 am Post subject: |
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Hi
Thank you for your post.
Unfortunately we are unable to give information as to the internal workings of our software.
Best Regards |
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BentRods
Super User
Joined: 01 Dec 2004
Posts: 20
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| Posted: Tue Nov 08, 2005 10:58 am Post subject: |
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Hi
is there any support for the ADC11 Labview vi there ?
I would also like to ask how is it so that picscope can measure Frequency so nicely and Picolog needs a 1 Sec scan time to do this ?
Bentrods |
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Michael
Guru
Joined: 07 Jul 2005
Posts: 93
Location: St Neots, Cambridgeshire
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| Posted: Wed Nov 09, 2005 9:42 am Post subject: |
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Hello,
What kind of Labview support are you looking for? If you would like to send your .VI to support@picotech.com we can have a look at it.
Also, PicoLog is a data logging programme and is not designed for fast frequency scans.
Best regards,
Michael |
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BentRods
Super User
Joined: 01 Dec 2004
Posts: 20
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| Posted: Wed Nov 09, 2005 11:54 am Post subject: |
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Hi
my comments are embedded below
>>What kind of Labview support are you looking for? If you would like to send your .VI to support@picotech.com we can have a look at it.<<
I would like to see a sample VI that will measures Freq with that existing Sample VI in the download, my VI skills are not dangerous enough yet ... so there's not much point in me sending a vi you already have there on the website.
>>Also, PicoLog is a data logging programme and is not designed for fast frequency scans.<<
Sorry but my question in the previous post remains unanswered, why is it that PicoScope can measure Freq ok and Picolog is a painfull excercise ?
Whats the max Freq that can be reliably measured in Picolog ? cant say that I have ever seen any specs on this ?
except for 12Bit @ 10 kS/s.
Thanks
BentRods |
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Michael
Guru
Joined: 07 Jul 2005
Posts: 93
Location: St Neots, Cambridgeshire
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| Posted: Fri Nov 11, 2005 9:44 am Post subject: |
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Hello,
I cannot buid a VI for you. You will need to look at our VI and expand upon it. This is what we offer our LabView examples for.
Again, PicoLog is a datalogging programme. It will measure voltages with ease but frequency counting involves more software processing. This would increase the weight of PicoLog on the processor.
Best regards,
Michael |
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