Calculating 10 - 90 % Rise Time in Diadem

Hi Everyone,
I would like to know how to calculate the 10-90% rise time in diadem of a simple pressure wave. Is there a particular function?
Thank you in advance.

You should post your question in the DIAdem forum.

Similar Messages

Measure waveform rise time with IVI step

I'm trying to simulate measurement of wafeform rise time through IVI step TS 4. How should I feed the Scope IVI step with waveform and then get the calculated rise time in simulation mode(I do not have the Scope yet.
Thank you.
Elik

Hi,
Thank you. So far it is simple, but I wonder if there is a way to feed to the IVI step through simulation waveform like square wave and different frequencies. I've tried using TDS 2000 series but I get the same data results.
I configure it as Normal Acquisition
Advance Tab Low Reference 10, Middle 50 and High 90.
Channels Tab, left the defaults except Maximum input frequency which I configure with variable
Trigger Tab Type Edge, Source Channel 1, Coupling DC, Slope Positive, Level 0.5
Extension Tab, Waveform Measurement.
I also set a step Read and set one of the channels to read Rise Time.
Although the waveform change The data from step results which I suppose give you the rise time stay the same.
Is there any way to change the waveform type and the rise time through the IVI step?
Thank you.
Elik

Sine, Square & Sawtooth sweep generation with variable duty cycle/rise time & fall time

Dear All !
I request and need some candid advices on the subject issue keeping in view the following notes:
1) I am a novice in LabView.
2) I was an average Electronics Engineering graduate who graduated about 9 years ago and since then I have not been involved in Electronics Engineering.
I have undertaken a task or generation of Sine, Square and Saw Tooth wave forms. All these waveforms are to be frequency swept form 1 Hz to 100 kHz. The amplitude of all these waveforms should be able to be adjusted. The duty cycle of Square Wave should also be adjustable (or better be able to be swept). Likewise the rise time and fall time of sawtooth wave should also be adjustable (or better be able to be swept).
I am considering other options as well but wanna try it on LabView.
I wish to ask that is it possible to execute this task in Labview 7.0? If possible then considering the para 1 & 2 above, is it possible for me to finish this task in 15-20 days if I work on this for about 3 hours a day? If not then what can be reasonable estimate?
I will be extremely grateful if you people can offer advice on whole project or part(s) of it.
Thanking you in advance and requesting urgent response(s).
Solved!
Go to Solution.

Check this thread.
I did some similar coding, it might be usefull to you.
http://forums.ni.com/ni/board/message?board.id=170&thread.id=493477&view=by_date_ascending&page=1
I am using ver 9.0 though.
If you work 3hr /day for 2 weeks you might as well finish book basics 1& 2 and than can do whan you need in a breeze, couple of hours.
Good luck

Pxie-6556 - How to control the rise time in the digital lines (hsdio)

Hi,
Is there any way to control the rise time in the PXIe-6556 digital lines?
Even in a low frequency signal 10kHz the rise time is about 2ns.
Tks,
Solved!
Go to Solution.

Hello engfpe,
The PXIe-6556 is a 50 Ohm system, meaning the output is source series terminated to be 50 Ohms and all our cables and accessories are 50 Ohms. With this setup regardless of the data rate you should have a clean rising or falling edge regardless of the data rate. The quality of the output (rising or falling edge) at your device will be related to the impedance matching of your cables.
The PXIe-6556 cannot adjust the slew rate by itself. However you can insert some simple passive components to do this for you. I've attached below to images. The first is a schematic showing one way of slowing down the edge. The second is the a simulated waveform showing the original edge rate before slowing it down, and the slowed down edge. This simulation is not of the PXIe-6556 but instead a generic digital output for concept. In the schematic R1 is set to 34 Ohms because U1.8 has the additional 16 Ohms inside it. TL1 is the 50 Ohm output simulating the cable on the PXIe-6556. R2, R3 and C1 are components you could insert after the PXIe-6556 cable before it goes to your device/cables. In this setup the cable going to your device is TL2 which is also 50 Ohms but it could be another impedance in which case you would change R3 to match.
You can see in the attached images you can significantly slow down the edge with this setup by altering C1. I hope this helps,
Jesse O. | National Instruments R&D
Attachments:
edge_compare_schematic.jpg ‏94 KB
edge_compare_waveform.jpg ‏44 KB

Delivery Date in SO not calculated with Route Transit Time

Hello Experts,
We are not able to calculate the delivery date in Sales Orders based on the Route transit time.We are using the Transportation group from Material master , Shipping condition from sold to Party , and Receiving issuing plants and zones .
One thing I notices is if we don't use the Transportation group in the material master , then the delivery date calculated based on transit time.Not sure not why its not working with using Trans group in Mat master
Please advise.
Thanks in advance

Hi,
Kindly do not post same questions twice
HI,
For delivery scheduling enter time
IMG >> SD >> Basic functions >> delivery scheduling and transportation >> maintain duration
Maintain here route, pick/pack & loading time
For in house production maintain time in material master in MRP view
Then now system will take in account what is production time + pick/pack + load time and then will schedule
Kapil

Device number makes a difference in NI SCOPE rise time

I just moved 3 scope cards (PCI 5102 ) from an old PC station to a new
PC station. Using MAX I set the device numbers to match the old
configuration.
Everything looks OK except which ever device I designate as device 1,
shows excessive rise time. If I use MAX to call the same physcial card
something other than device 1, the rise time go aways. See the attached
screen shots.
What am I missing here? I can't find any configurations settings to explain this.
~~~~~~~~~~~~~~~~~~~~
Paul Johnson
Renco Encoders, Inc
Goleta, CA
~~~~~~~~~~~~~~~~~~~~
Attachments:
As Device 1.jpg ‏75 KB
As Device other than 1.jpg ‏73 KB

The reason you are getting different results is that you are sampling at different rates. You can see the rate above the green LED. The rate is a combination of the Time/Div and the record length that you have selected.
So take a look at the configured record length for each configuration by going to Edit>>Device Configuration. Then choose the one that works best for you.
The reason the behavior follow Dev1 is because the SFP saves the configuration information for each device. However, it is by the device number not be the specific board itself. So the configuration file for Dev1 has the record length set lower, and therefore the differnce in data.

About rise time test

Hi,
Use Transition Measurements to test rise time as appendix in detail.My question:
1. Is the program structure reasonable?
2. When the RAMP TIME of amplifier is fixed, the DURATION varies to the different time of input control Am.
3. The duration ERROR is out of allowance.
Hope you give me a resolution.
Thanks!
Regards,
XU
Attachments:
Sample2.vi ‏155 KB

Hi Xu,
I understand that you are wanting to calculate the rise time of a signal coming into your NI 4472 board. I'm assuming the NI 5411 is stimulating an external amplifier? Please include more information about your application and the routing of the different signals involved so I have a better idea of how to best implement a solution.
Also, are you receiving an error with an error code when you run the program? Or is it just outputting a value you don't expect. If you are receiving an error please include the error number and the description.
The NI 4472 is capable of making rise time measurements but I would recommend using one of the NI high-speed digitizers which have built in functionality for making rise and fall time measurements. They also make much more precise timing measurements due to their higher sampling rates. If you have an NI digitizer I would give that a try. If you only have the NI 4472 then I can help with that also. I just need more information about your application.
Regards,
Erick D.
NI Applications Engineer

How to caculate the duty,fall time and rise time of signal

I am currently using Lv6.1, and have one NI GPIB-ENET/100 Controller, throught the oscillograph I want to caculate the duty of input signal, and it's fall time and rise time also, but, try it long time, I still no know how to do it, could you give me some tips? Examples is preferable.
Thanks.

Programming these oscilloscopes is very easy using gpib commands I use the tds5104 daily and have written many programs for it. the driver vi's are very easy to use. I personally would just let the scope do it.
Here is an example vi converted to 6.1
and for 7.0
Message Edited by jhoskins on 08-19-2005 08:08 PM
Joe.
"NOTHING IS EVER EASY"
Attachments:
simple_example_for_5104b.vi ‏38 KB
simple_example_for_5104b.vi ‏43 KB

Does anyone have vi's written to analyze Eye Diagrams? Extinction Ratio, Rise Time, Fall Time, Jitter

I have a 100Mb optical signal and I need to measure parameters given in the eye diagram such as Extinction Ratio, Rise Time, Fall Time, etc.
Does anyone have vi's written to measure these type of parameters?
Thanks!!

TeleTech,
The Modulation Toolkit contains tools for developing and displaying eye diagrams. I do not think that the parameters you are looking for are included, but you may be able to derive them using the available functions in the toolkit. I will be sure to post any examples if I come across them. I hope this helps!
Brian T
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6733 AO slow rise time

I am using a PXI 6733 AO board as output on a closed-loop PID control. There appears to be excessive lag on the output when compared to the error signal, and as an experiment, I gave an unbuffered 0-10V step output command to the card. I measured the rise time for 0-10V at the output (no load, directly connected to SCXI 1121 for acquisition) at approximately 200mS. This is nowhere near the rated 2.8uS...am I doing something wrong?

Sean,
I'm only acquiring at 1kHz, but I'm not really interested in the absolute value of the time, just need it faster than it is. My application is a real-time control loop operating at 500Hz, so 1k should be fast enough to show me the step response. In continuing my investigation, I have found that the 200ms time is constant regardless of the magnitude of step change (-10 to 10, 0-10 or even 0-1V). Makes me think that something somewhere is configured to generate a ramp, even though my code has set the buffer to zero. I also get the same rise time when I send a command from the test panel in MAX.
Steve

How to measure time difference between zero crossing of a sine wave and rise time of a pulse on a same graph?

I have a 50Hz sine wave and a pulse signal on a same graph. The phase difference between two is between 0-90 degrees.
Now I need to calculate the time difference between (when the sine wave crosses zero volts) and (when the pulse rises). The frequency will stay approximately same for both signals.
The application is for a three phase generator. In simple words, when the time difference between the zero-crossing of sine wave and the pulse rises increases, that means that the load on the generator has increases.
I am a beginner user of LabView (version 9, 2009), maybe it is a very simple problem but I've been pulling my hair out for the last few days and coudln't figure anything out. Any help would be greatly appreciated. I am using DAQ USB-6008 to measure these voltages and pulse from the generator and a sensor
I have attached a jpg (a graph that i just made with excel to explain). The time 't' is what I am trying to measure
Cheers
Awais
Message Edited by awais.h on 03-30-2010 11:20 PM
Message Edited by awais.h on 03-30-2010 11:21 PM
Solved!
Go to Solution.

Hi
Thanks for the code but I'm afraid it won't work. Like you said the probability of choosing a value that is on both graphs may not happen. This is something that I would like the code to do automatically.
But I did use the previous code posted and made some modifications to it and it seems to work perfectly. Now the next thing is to be able to get just that one value that tells you the first time difference.
Here is what I get using that code.
As you can see from the t Values. I only need the one that is highlighted. If there is a way to filter out the rest it would be great.
I was thinking of a while loop and as soon as the value is higher than 3E-5 it would store the number and stop the loop, but I'm not too familiar with arrays in labview.
Here is the the code modified.
As you can see, it wasn't that big of a modification and it still is your code.
I will keep trying.
Thanks for the help
Attachments:
FinalShockSpeed.vi ‏55 KB

EBSTax calculation error at the time of PO creation

At the time of any purchasing document creation, like PO or any type of requisition, system is showing error telling, an error occured during tax calculation.
Now, here we are not using EBSTax, so no setup related to tax has benn touched upon. I am currently configuring the Test instance R12. Can anybody suggest
me the solution?

Posting the exact error message is a lot more helpful.
Check Unexpected Error Occured During Tax Calculation [ID 472911.1]
Sandeep Gandhi

Essbase Calculation Script taking more time in new environment

Hi Everyone:
We have four environments in our implementation.
1. DEV Environment - 64 bit Essbase Version 11.1.1.3
2. PreProd Environment - 32 bit Essbase Version 9.3.0
3. PreProd Environment - 64 bit Essbase Version 11.1.1.3
In the above mentioned environment PreProd Environment - 64 bit Essbase Version 11.1.1.3 is a newly installed
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We have migrated our Application from PreProd Environment - 32 bit Essbase Version 9.3.0 to PreProd Environment - 64 bit Essbase Version 11.1.1.3. A calculation script that takes only 20 minutes in 32 bit PreProd is taking more than
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We have also migrated our Application from DEV Environment - 64 bit Essbase Version 11.1.1.3 to PreProd Environment - 64 bit Essbase Version 11.1.1.3. The calculation script that takes only 20 minutes in 64 bit Dev is taking more than 5 and half hours in newly installed 64 bit PreProd.
All the server settings and cache setting everything looks similar in all the three environments.
Please advice us what are all the possibilities that creates the issue.
Thanks and Regards,
Prabhakar.

Hi Cameron,
Thanks for your reply.
I have cross checked the Virtual memory in both servers,in new server it was declared high.
Please find the cfg setting which we are using in our application.
AGENTPORT 1423
SERVERPORTBEGIN 32768
SERVERPORTEND 33768
AGENTDESC hypservice_1
;CSSREFRESHLEVEL auto
;SHAREDSERVICESREFRESHINTERVAL 30
CALCCACHEHIGH 199999999
CALCCACHEDEFAULT 150000000
CALCCACHELOW 10000000
CALCLOCKBLOCKDEFAULT 3000
DATAERRORLIMIT 10000
UPDATECALC FALSE
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CALCREUSEDYNCALCBLOCKS FALSE
PORTUSAGELOGINTERVAL 15
QRYGOVEXECTIME 600
LOGMESSAGELEVEL INFO
CALCPARALLEL 6
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AGENTTHREADS 30
AGTSVRCONNECTIONS 10
SERVERTHREADS 25
EXPORTTHREADS 1
SSLOGUNKNOWN FALSE
CALCNOTICEDEFAULT 10
NETRETRYCOUNT 3000
NETDELAY 2000
__SM__BUFFERED_IO TRUE
__SM__WAITED_IO TRUE
and aslo find the caches that we define:
Index cache:250000
Data Cache:250000
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The all above settings are identical both servers.
In New server ,only one script that is taking more time but remaining scripts are working fine with less time.
We also did one test cause that splitting the script in to multiple and executed ,in this cause the script where we are using direct assigning value from member(say A1) to another member(Say A2) is taking more time.But same scripts we executed in old server it executes fine.
Still we are not able to find out exact root cause for this issue.
Could please anyone help me to resove this issue.
Regards,
Prabhakar.

Calculating the planned delivery time in calendar days or working days

Hi,
It seems that there is a way to calculate the planned delivery time in calendar days instead of working days.
When I use the "Planned delivery time calculation" (WPDTC), in Evaluation Options, I got the message :
"Note that follow-on applications are currently interpreting the planned delivery time as calendar days.
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When MRP create a PR -with MDBT, MD03 or MD01- I want my Planned delivery time to be in working days.
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Thanks
PYR

Hi,
I understand that it makes sense that vendors calendar has to be different (compared to my plant).
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It seems that planned delivery time may follow a calendar.
Thanks,
PYR

Calculation of Material staging time in Schedule line of Sales order

Hi Experts,
In a sales order for a material on GATP, there is time 23:57 coming as material staging time.
Can any body explain how is this time calculated.
For the shipping point there is no working time maintained.

Biswajit,
Material staging time is calculated based on the GR time which u mention in the material master QM view.
Please check the link, hope it will help.
[Material Staging|http://help.sap.com/saphelp_47x200/helpdata/en/c6/f840fb4afa11d182b90000e829fbfe/frameset.htm]
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Calculating 10 - 90 % Rise Time in Diadem

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