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measure risetime
UofH
Member
12-07-2005 05:08 PM
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I am using the Tektronix CSA 7404 Communication Signal Analyzer. I am
able to measure ristime on the instrument by just clicking a button,
but on the VI somehow I have trouble.
Please help.
LV 7.1,Windows XP
Please help.
LV 7.1,Windows XP
tbob
Trusted Enthusiast
12-07-2005 06:14 PM
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What kind of trouble?
12-07-2005 11:01 PM
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well I was tryin to be modest! I was looking for a direct way where the
outcome of a subvi among the drivers would give the risetime. There's
a category called measurement and under that there are query
functions and configure functions for various parameters like
maxmeanmin, std deviation,noise etc. one of them was also get
measurement value.vi
But I dont know how to implement it on my vi to get the risetime from the instrument and display it on the front panel of the vi.
But I dont know how to implement it on my vi to get the risetime from the instrument and display it on the front panel of the vi.
Dennis_Knutson
Knight of NI
12-08-2005 10:06 AM
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I can't verify it since I don't have that instrument here, but I would try using tktds7k Set Measurement Immed Source to set the channel you want to measure, then tktds7k Set Measurement Immed Type to specify the risetime measurement (value 24), then tktds7k Get Measurement Value to get the actual risetime. The output of this can be wired to a numeric indicator on the front panel.
12-09-2005 04:40 PM
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The set measurement type does not change from 5 whatever I do. It does not give out any other type than 5 for some reason!!
Mathan
Trusted Enthusiast
08-09-2009 11:29 PM
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---------------------------------
Dennis wrote: try using tktds7k Set Measurement Immed Source to set the channel you want to measure, then tktds7k Set Measurement Immed Type to specify the risetime measurement (value 24), then tktds7k Get Measurement Value to get the actual risetime.
---------------------------------
First of all very sorry for hi-jacking this thread. But with the hope that Sir Dennis will have a look at this thread and help me out, am posting here.
Am using Tektronix TDS 7404 oscilloscope with the tktds7k instrument drivers installed. I tried to measure the amplitude with the above steps, but the output is coming as a junk value(?). It is 99.00 e36. For all the values either frequency, rise time, fall time, duty cycle,..... the same value is coming. Please help me out in tracing the problem.
Also how to measure the high steady state, low steady state and high transition and low transition voltage values?
Thanks,
Mathan
Dennis wrote: try using tktds7k Set Measurement Immed Source to set the channel you want to measure, then tktds7k Set Measurement Immed Type to specify the risetime measurement (value 24), then tktds7k Get Measurement Value to get the actual risetime.
---------------------------------
First of all very sorry for hi-jacking this thread. But with the hope that Sir Dennis will have a look at this thread and help me out, am posting here.
Am using Tektronix TDS 7404 oscilloscope with the tktds7k instrument drivers installed. I tried to measure the amplitude with the above steps, but the output is coming as a junk value(?). It is 99.00 e36. For all the values either frequency, rise time, fall time, duty cycle,..... the same value is coming. Please help me out in tracing the problem.
Also how to measure the high steady state, low steady state and high transition and low transition voltage values?
Thanks,
Mathan
