Operating Signal Express with Labview 7.1

Hey,
I have just recently installed Signal Express as a portion of the Sound & Vibration Measurement Suite and teh Sound & Measurement Assistant front end works well. When I attempt to start a new VI in Labview 7.1, I am unable to insert tools from the order analysis menu.
Do I need to upgrade Labview or is there another solution
Thanks
Doug

Hello Doug.
Thank you for contacting National Instruments.
The readme of Sound and Vibration Measurement Suite 5.0 states that you must have LabVIEW 8.2 or later Full Development System or Professional Development System installed and properly licensed in order to run this application successfully. So, I hate to be the bearer of bad news, but it appears that you will not be able to use this Measurement Suite inside of LabVIEW 7.1. As further confirmation of this, do you see any S&V or Order Analysis VI's on your functions palette in LabVIEW? If you don't, this will indicate that the functionality for LabVIEW was not installed because of an incompatibility between the toolkit and the version of LabVIEW.
Let me know if I have explained this well. If there is anything else I can do for you to help you through this, please let me know. I will be more than happy to help!
Brian F
Applications Engineer
National Instruments

Similar Messages

What are the main differences between Signal Express and Labview?

National Instruments provides a matrix so one can quickly compare the
various versions of Labview but no comparison of Signal Express with
Labview. Hence how does Signal Express compare with Labview? What
are some of the things one can do with Labview one can't do with
Signal Express?
Howard

hrh1818 wrote: Which version of Labview are you referring to? I don't consider the graphical version of Labview to be a full featured programming language. LabWindows/CVI is by a long shot a lot closer to being a full featured programming language than the graphical version of Labview.
Howard,
You clearly don't know what you are talking about. There is no "graphical version" of LabVIEW, there is just LabVIEW. Click on the article "Is LabVIEW a general purpose programming language?" written by the Jeff K. for some easy reading from a few years ago. It is all still true (except that object oriented features and recursion have been added in recent versions).
One of the main points at this years NI-week was the discussion of how processor development is switching more and more to multicore designs to improve performance because a simple boost in clock frequency is becoming more difficult. Linear, text based code is not well suited to take advantage of multticore design, while the dataflow based LabVIEW programming language automatically scales well to multiple processor cores, without any need to rewrite older code. I would say that only LabVIEW is futureproof in this respect. LabVIEW programmers are not wimps that are simply too stupid to write text based code. LabVIEW is not a toy language for people that don't want to learn a "real" programming language.
LabVIEW is arguably the best programming language in terms of getting things done! I've never felt limited with LabVIEW and my programs often don't even have anything to do with data acquisition or instrument control. The difference between text based code vs. LabVIEW is like "DOS vs. Windows", "Radio vs. HD television". "Trilobyte vs. Homo sapiens" (sorry Putnam ). Text based code is monochrome, archaic and outdated and its linearity imposes unecessary constraints on the programmer that can only be (partially) overcome by wasting even more time throwing even more code at it.
Sure, a seasoned text based programmer will initially have problems adapting to LabVIEW, just because you would need to adapt to and embrace the power of dataflow and not try to make a literal translation of the text code to LabVIEW, retaining old habits. If you get stuck, come back and ask here in the forum.
You were looking for object oriented features and failed. All you need to do is a quick site search. All the information is out there. Just because you cannot find it in the first five sentences of the glossy brochure does not mean it does not exist. Maybe you want to read one of the application notes such as:
LabVIEW Object-Oriented Programming: The Decisions Behind the Design
In general, you should avoid judgement until you have all information. Your opinions seem quite biased and superficial and not really based on hard facts.
Initially you asked about the difference between signal express and LabVIEW.
hrh1818 wrote:
> What kind of measurments do you want to do and what kind of requirements do you have?
> You can also see for yourself and download evaluation version of both.
No thanks, there has to be a better way to get an answer to my
question than get involved in a two month study project.
If you would answer the first question quoted above, we could certainly help you with the decision. Isn't that the main purpose of this thread?
You can also contact your local LabVIEW Field Engineer to go over your requirements and help you make a decision. They usually know their stuff!
Message Edited by altenbach on 09-02-2007 11:51 PM
LabVIEW Champion . Do more with less code and in less time .

How interface N5181A MXG signal generator with labview by using LAN Interface????????????

hai every one ...i have a doubt how to interface N5181A MXG signal Generator with Labview by using LAN Interface???? and
how to find IP Address of N5181A MXG signal Generator????????
when i connect instrument with labview it shows that no instrument connected and what are the requirements for LAN interfacing with that instruments in labview and please help me??????

You can set the IP Address on the instrument. You may need to be in the same subnet of your controlling computer, so you may need to set your computer's IP Address to something static.
Use VISA. It makes life easier if you decide to use another bus (like GPIB, USB, serial, etc). In MAX, create a network session with the static IP address you set the instrument to and use that as the VISA Resource.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines

Not receiving any signal input with LabVIEW SE, USB DAQ board

Hello all, good afternoon.
I am having a little trouble with my DAQ device, I hope that someone will be able to help me.
I'm plugging a BNC pH sensor to a NI USB 6251 M-series board, to try and obtain the electrical response of that particular sensor, measuring the voltage output for each buffer solution (pH 4 and 7). Have 9.2.3 mx (lastest) drivers.
The pH sensor (floating) is plugged through a female BNC plug to the circuit board, signal is going through a signal conditioning circuit (composed by a voltage follower on each of the wires to lower the output impedance of the sensor, and 2 bias resistors from AI+ and AI- connected to AI GND with the board case wired to the power supply ground, as seen in http://zone.ni.com/devzone/cda/tut/p/id/4494)
I'm measuring in differential mode, as I said both wires of the sensor are going through a voltage follower each, and into the DAQ board. The Op-amps are being powered by +-15v as seen, again, in http://zone.ni.com/devzone/cda/tut/p/id/4494
I did take the time to read the manuals and tutorials I found, did quite a bit of investigation over the last few days, and wired the system carefully.
In labview signal express, I choose to take an analog voltage read, and select input range from -500mv to 500mv, because the sensor should output at most -400mv to 400 mv
Now, much to my dismay labview registers in that channel absolutely nothing, only a little noise (~1 mV). I unplug the sensor and realise that whether the sensor is connected or not, it doesn't make a difference in the presented output - it's as if it the sensor wasn't there at all. And yes, I am measuring the correct channel. I tried connecting the wires to different AI channel pairs as well, could be a faulty one, but no success either.
If I plug a voltimeter to the wires that are going into the analog inputs (after conditioning), it measures about 50 mV, which is a lot more than the 1 mV the board is measuring, but a lot less than the ~180 mV I should be measuring with a pH 4 buffer solution.
I know for a fact the problem is not the sensor, and the DAQ board seems to be fully operational.
I think it might have to do with the signal conditioning I'm doing, or some sort of configuration with the hardware of the DAQ board.
So, any idea what I might be missing?
I'm a week behind schedule because of this, hopefully I will find my answer here.
Thank you very much in advance!

Good afternoon.
Yes I have tried all of that. The board responds very well when a flat 5V DC voltage is fed into a channel.
However after much investigation I believe to have found the problem yesterday, it probably has to do with the operational amplifiers I was using. The input bias current was in the magnitude of nanoAmps, while for pH measurements an IBC of picoAmps or less is necessary due to the high impedance of the sensor. This was causing a drift of over 100 mV on my output which is about 2 pH and thus unnacceptable (even though I had the Bias resistors at the input to ground, like suggested in the NI tutorials, but apparently they were not enough to compensate for the high IBC).
In the lab all available op-amps suffer from this, even Instrumentation op-amps like AMP04 from Analog Devices. I still haven't had a chance to acquire new op-amps with the necessary IBC but hopefully it will do the trick. Makes sense since I checked the datasheets for every op-amp in the lab, and they all had IBC around 400 nanoAmps (and none of them worked), while every single op-amp for every pH meter circuit I found have IBC's of pico/femtoAmps.
The sensor I'm using is from AquaMedic, I'm not sure what the model is, but it's a cheap plastic sensor that comes bundled with their pH Computers.
Thank you very much for your input.

Using signal express with NI9227 timing settings

I have Signal Express LE and using modual NI 9227, I am trying to measure input current draw AAC. What should my timing setting be for "Acquisition Mode," "Samples to Read", and "Rate (Hz)" be if I want to read every .5 seconds and every 1 seconds? Can someone explain to me what the Time Settings mentioned above mean. I am a Lab Technician learning as I go. My EE's are very busy and want me to do as much as I can on my own, please help.
Thanks
DustDevil

DustDevil,
First, welcome to our forums!
Second, we have a great KnowledgeBase article here that talks about the various timing settings you have available and what they each will mean for the timing of your measurements. In that article, "number of samples per channel" corresponds to the "samples to read" you have available in SignalExpress.
Also, the 9227 is one of our modules that uses Delta-Sigma modulation to get a higher resolution, which has some caveats as far as sampling rate is concerned. There is a minimum data rate (about 1600 samples per second) that you cannot sample below. If you set a rate lower than 1600 you'll still be getting data back at 1600 S/s. This help file describes the "Subset and Resample" step you can use in SignalExpress so you can acquire data at the minimum rate of the device and then resample the result to end up with data at the "rate" you actually want.
Give those a look and re-post if you have any follow-up questions or need clarification.
Best,
National Instruments

"Hi,I'm having problems controlling the Agilent E4422B Signal Generator with Labview. When using the Labview driver functions such as initialize instrument I always get an Error -1074135040.

I can query the device through the measurement and automation tool. I can also Identify the instrument by issuing a *IDN? with VISA write and read. Why do I get this error while using the drivers supplied by NI for this equipment? Any Ideas?

Hi, Brooks.
Attached please find the files containing all the information concerning my attempt to control the Agilent E4438C. Hope you can make sense of it and help me.
Regards
isaac
Attachments:
nireport.txt ‏2 KB
Capture.spy ‏5 KB
CaptureSpy.doc ‏117 KB

Why the acquisition with DAQmx is different by using Labview 8.2 from Labview signal express?

Hello,
I am using a PCi-6281 to acquire a voltage. When I am using Labview signal express with only the step to acquire I read the good signal with the exact voltage. But when I am using my VI, the y axis and the values recorded are wrong. Why this difference appears?
I insert a picture with both signal: at the top is the signal from my vi (wrong measurement) and at the bottom is the signal from labview signal express (correct).
The vi I am using is the example Cont Acqu&Graph Voltage-To file (binary).vi.
Thank you for your answer!
Sophie
Sophie

I am using the binary file because it requires the minimum change in another VI. I have tried to change in scaled data but now my second VI has not enough memory to display all data.... What's wrong? Here is my second VI. Totest with data you need to insert a number in the "scaling factor" if not the dat are multiplied by zero...
thanks for your help!
Message Edité par stage84 le 07-24-2009 10:11 AM
Attachments:
Display 3.vi ‏1867 KB

NI Labview Signal Express activation dont work

Actually, signal express was working properly. We tried to run the upgradation cd on 4 Jan, 2010 that was provided by NI in august 2009. It was taking unexpectedly longer time and we turminated running the setup before completion. When we start signal express a window appeares that ask for activation (see attachment). Even after activating properly, same window appears time and again. We are unable to start signal express, please do the needfull.
Attachments:
Activation window.doc ‏130 KB

Hello,
Sounds like aborting that installation may have corrupted your software. I would try to repair Signal Express with the original disks that you had and see if that works ok before trying to install the upgrade again. You can repair NI software by going to Add/Remove programs, find National Instruments Software and click Change/Remove. This brings up a window where you can select Signal Express and click the repair button. It will probably ask you for the CDs that you installed from ( the original CDs). Let us know how this goes, if you have problems or questions we will try to help.
Thanks,
National Instruments

Where can i find labview signal express DAQ assistant at?

Hi, i need help
Q1) where can i locate Labview signal express DAQ assistant at?
Q2) Is Labview signal express functions same as Labview 8.6 ?

LabVIEW Signal Express and LabVIEW are two different products.
If you are talking about the DAQ Assistant, then you need to have the latest DAQmx driver installed and you should be able to find in the Measurement I/O palette on the LabVIEW Block Diagram.
Adnan Zafar
Certified LabVIEW Architect
Coleman Technologies

Why can I only import one TDMS signal at a time in Signal Express?

I have dozens of data files which were originally recorded as LabVIEW waveform files. I converted them all to TDMS in LabVIEW in hopes that I could import them to Signal Express (with the S&V Suite) for further processing. Each data file contains more than 20 channels.
When I try to import them to SE, I am unable to import the entire group. Instead, I am limited to one channel at a time. This would take days to import all channels, and is not what I want at all. Is there some way to import an entire group of channels at once?
JR

I was using the "Logged Signals from LabVIEW TDMS file" import; perhaps I had installed it on SE 2.5 before upgrading to 3.0. Regardless, I downloaded the ZIP file, and ran the msi with the "Repair" function. This did not change the functionality. I then used your suggestion, and redigitized one of the files with the Express VI set for TDMS. Same deal, although instead of the channel names I had been able to specify using the TDMS subVIs, now it lists them all as "Voltage_x", where x is a channel number beginning with 0.
I've attached two images as examples of what I'm experiencing. The first (temp1.JPG) shows where I've tried to select the entire group. You can see that "Convert File" is not enabled, and the sample information has not been read. The second image (temp2.JPG) shows where I've selected a channel. I am only able to select one channel, not a range. The "Convert File" button is now enabled, and sample information is correctly displayed.
Attachments:
temp1.JPG ‏57 KB
temp2.JPG ‏57 KB

Analog filtering with Labview versus electronic filtering

I have been into signal conditioning with LabView. I want to discuss with you guys software conditioning versus hardware coditionin, especially filterinf (i.e. bandpas filtering) an analog signal. Is there anybody out there who uses LabView for sotware conditinin and/or who compared software conditioning (implementing bandpass filter in Labview) to hardware conditioning (filter the signal electronically before data acquisition)? How satisfactory are LabView results?
Thank you guys. I am looking forward to reading your ideas.

If all your signals are well within the sampling rate of your digitizer, digital filtering is OK. Analog filtering is required if the raw signal contains frequcies that are higher than the Nyquist frequency, because they would show up aliased to lower frequecies and no digital filter will later be able to differentiate them from a real frequencies.
LabVIEW Champion . Do more with less code and in less time .

Signal Express not activated with Labview Full Development System Volume License

I'm using a volume license manager to generate license for disconnected machines. I just upgraded to Labview 2009. The license files work for labview but are not working for signal express. I have the Labview full development system which included signal express in the past. Both labview and signal express work fine on my computer that also has the volume licensing manager software installed. This computer is connected to the license server. I need to get signal express activated on my disconnected machines.

LabVIEW Full Development licenses still include Signal Express. Are you saying that whenever you are connected to the server you can run Signal Express just fine, but whenever you create a disconnected license Signal Express is not able to launch? Can you verify that you are, in fact, checking a license out from the server whenever you are connected to the network?
If you still have trouble I would recommend calling NI support so we could get more informatioin (such as your license file, contract ID, etc).

LEGO Mindstorms 2.0 crashes at startup when LabView Signal Express is installed first

When NI Circuit Design Suite Education Edition is installed first in a computer and the LEGO Mindstorms software second, the LEGO Mindstorms software doesn't work, it reports the following:
Error: A required file is broken
Possible Solutions: Reinstall the LEGO Mindstorms NXT Driver (tried but doesn't work)
Error code: 1003
Ordinal not found
The ordinal 18 could not be located in the dynamic link library NIVISV32.dll
Error loading "fantom.dll"
The operating system can not run %1
On other computers the LEGO software starts running, it displays part of the initial screen and then a small window opens saying that the Mindstorms software has has an error and that it will close. The previous report doesn't show.
If LabView Signal Express is uninstalled and then the LEGO software reinstalled, the LEGO software works.
I've dowloaded and installed new and old versions of the NIVISV32.dll and this doesn't correct the problem. I went as far as version 4.20 of the dll because it is dated in 2007 and the dll file installed by the LEGO software when it works is also dated 2007, but if I install the dll without uninstalling LabView Signal Express, the LEGO software continues not working.
Please advice how to correct this problem without having to uninstall LabView Signal Express first. If the LEGO software is installed first, is LabView Signal Express going to use and not to replace the old 2007 version of the dll installed by the LEGO software? Is there any LEGO software update that corrects this problem?
I repeat: I know a solution is to uninstall LabView Signal Express, install LEGO Mindstorms and then reinstall LabView Signal Express but I have 60 computers already cloned and deployed with this problem, so I don't want to go to this long process to fix the problem. The computers are using Windows 7 and problems happen on both the 32 and 64 bits versions of Windows 7.
Any ideas???
Solved!
Go to Solution.

I couldn't reproduce the error either, but in our x86 computers this problem appeared after several months; we used LEGO Mindstorms last time in Summer 2011 without any problems and just three weeks ago when we were checking the computer for our Summer 2012 classes if when we noticed the problem. I’m still going to try to reproduce the error in an x64 computer where the problem appeared immediately.
Anyway, I’m attaching a word file with images of captured screens where you can see the error reports generated by LEGO Mindstorms and a series of steps uninstalling and reinstalling these program plus LabVIEW, until LEGO Mindstorms finally works after having uninstalled all traces of LabVIEW.
Images can be expanded and zoomed in to a better view of the details and if I can reproduce the problem in an x64 computer I’ll let you know.
Please see if you can find out something based on the images I’m sending.
Thank you.
Attachments:
LEGO PROBLEM.doc ‏3129 KB

How can i generate AMI line codes in LabView signal express?

i wish to conduct a project that uses AMI line codes. but i have a hard time using signal express to generate it. can anyone help me with that?

Hello Barry,
That is really a problem, in LabVIEW, we can only convert vi to the previous version, I have version 7.1 and so I can only convert to version 7.0 and you cannot open this too.
But I think that it's very easy to do what I'm trying to explain you.
Go to the cluster group in the functions pallete. Place an unbundle by name function in the diagram and connect it to the data that's comming out of the FFT Power spectrum vi - the pink (or watever) wire.
Click in the white part of it (it should contain something like f0), choose magnitude.
This is now an array that you can connect to the peak detector function.
Take care about the threshold and width parameters of the peak detector.
Take a look at your signal and decide the amplitude and width of the peaks you want to detect. The threshold is the amplitude above what you consider as a peak, the width is a little bit more complicated - to begin, 3 or 4 should be a good number if you signal is not too noisy - bigger widths will somehow do a kind of a low pass filtering to your signal.
The position output of your peak detector is an array of locations where your peaks were found.
Keep in mind you are now working in frequency domain and that position means something in the frequency domain.
The array you placed as input of the peak detector is an array of points starting in f0 and separated by df (the other elements of the cluster).
So to calculate the real value of the peaks, you have to multiply them by df and add them f0.
Sorry by the big text and sorry if I went too much in detail,
Hope it helps,
Paulo

Event Acquisition in LabView Signal Express

I have the USB-6009 data logger and LabView Express. I am trying to record certain events as they happen in the process. The signal I am recording is a 0 or 10 V DC signal and each time that signal goes to 10V DC I want to record that as a event. I am not worried about the actual voltage just the event. I am not sure what the best way would be to set this up in LabView signal express. Any advice on how to achieve this.

Hi CoryB,
In SignalExpress you can create events by in the Recording Options tab clicking Events. Then, in the Category list select Add. From here, you can change the options for the event. Here is a link to the help on the events page.
Also, Dennis is absolutely correct. You will get better assistance with your questions if you post in the correct board.
Bill E. | Applications Engineer | National Instruments

Operating Signal Express with Labview 7.1

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